Electrochemical cells based on multidimensional electrode architecture
By using an electrochemical cell with a multidimensional electrode architecture, metal substrates and tabs are eliminated, and the current flow path is optimized, the problems of low energy density, heat concentration and complex assembly of traditional cells are solved, achieving high energy density, fast charging and improved reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ITNO ENERGY PTE LTD
- Filing Date
- 2024-10-09
- Publication Date
- 2026-06-02
AI Technical Summary
The 2D electrode stacking structure of traditional electrochemical cells results in low energy density, low gravimetric energy density, high resistance, localized heat concentration, slow heat dissipation, complex assembly, poor reliability, and internal short circuits and safety hazards.
A multi-dimensional electrode architecture is adopted, including a lower current collector layer, an anode layer, a diaphragm layer, a cathode layer, an adhesion layer, and an upper current collector layer. This eliminates the need for a metal substrate and tabs, optimizes the current flow path, and achieves ion transport and electronic isolation through blind holes and a diaphragm layer, thus simplifying the structure.
It improves volumetric energy density and gravimetric energy density, reduces heat generation, simplifies the structure, extends cell life, improves charging speed and reliability, and reduces manufacturing costs.
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Figure CN122139248A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of energy storage devices, and in particular to electrochemical cells. More specifically, this invention relates to an electrochemical cell based on a multidimensional electrode architecture, which provides higher volumetric energy density and gravimetric energy density. Background Technology
[0002] Electrochemical cells are fundamental components of many electrochemical systems and experiments. They consist of two main elements: electrodes and an electrolyte solution. Electrodes are typically made of conductive materials, such as metals, carbon, or any other material with a conductive network, and they play a crucial role in these cells. There are two different types of electrodes in electrochemical cells: anodes and cathodes.
[0003] The anode is where the oxidation process takes place. During oxidation, electrons are released from the anode into the external circuit. This electron flow is a key aspect of many electrochemical reactions. Conversely, the cathode is where reduction occurs. Reduction involves the gain of electrons, and at the cathode, electrons from the external circuit are consumed in the process.
[0004] As a complement to the electrodes, the second fundamental component of the electrode cell is the electrolyte. An electrolyte is a solution or substance that acts as a medium for the movement of ions between the anode and cathode. These ions actively participate in the electrochemical reactions that occur at the electrodes. By facilitating charge transfer within the cell, the electrolyte enables the overall function of the electrode cell.
[0005] In traditional battery cell manufacturing, the process involves using a two-dimensional porous thin-film electrode coated on a metal foil. The process begins by preparing a liquid slurry using active electrode materials, conductive additives, and a binder. This slurry, known as the anode slurry, is then deposited onto a thin copper (Cu) or aluminum (Al) foil. Similarly, a cathode slurry is coated onto a thin aluminum (Al) foil or a similar metal surface.
[0006] After electrode coating, these sheets are cut to specific dimensions suitable for particular cell designs and required form factors. These form factors can vary and include cylindrical, pouch, and prismatic cells. Once the desired dimensions are achieved, a thin, porous polymer separator is inserted between the cathode and anode plates. This construction with 2D electrodes and separators either winds around a cylindrical mandrel to form a cylindrical cell, or stacks or winds around a flat mandrel to form a pouch or prismatic cell, thus forming the cell's core. This manufacturing process is indispensable for producing conventional cells for a wide range of applications.
[0007] Traditional 2D electrode stacking structures for battery cells are not without their drawbacks. First, using copper (Cu) foil and / or aluminum (Al) foil inside the electrodes, serving as both a substrate and a current collector, increases the cell's volume, ultimately reducing its energy density. Furthermore, these metal foils significantly increase the overall weight of the cell, negatively impacting its weight-based energy density.
[0008] Secondly, the electrical connections of the tabs in this structure are complex, and the current must travel a long path through these tabs, resulting in high resistance. This increased resistance causes the current to concentrate at the tabs, leading to localized heat generation near the tabs, which in turn accelerates cell degradation.
[0009] Furthermore, due to the inherently higher resistance of the tabs and metal foils, the battery cell tends to heat up significantly during operation. Therefore, the layered arrangement of the electrode sheets can cause excess heat to accumulate in the center of the cell, leading to increased temperature and thus accelerating cell degradation.
[0010] Furthermore, the layered cell electrode design using alternating polymer separators hinders heat conduction along the electrode thickness, resulting in a slower heat dissipation rate. These temperature-related issues, including cooling rate and heat concentration, limit cell lifespan and its ability to charge at higher rates. In addition, traditional 2D electrode stacking structures have several drawbacks in terms of energy density, resistance, localized heat generation, and overall cell lifespan.
[0011] KR20130021784A discloses a structure for an electrode assembly, a soft-pack housing, and an electrolyte solution. However, the assembly process itself can be quite complex due to the need to coordinate the positions of multiple electrode plates and a diaphragm. This complexity can lead to increased manufacturing costs and potential assembly errors. Furthermore, the presence of multiple components and layers within the assembly may introduce the risk of internal short circuits or other operational problems, affecting the overall reliability of the system.
[0012] US8277970B2 discloses a pouch cell with an unsealed residence portion, and more specifically, relates to a secondary battery comprising an electrode assembly mounted in a sealed state within a pouch cell housing, wherein an unsealed residence portion (the unsealed residence portion) is defined between a sealed portion of the battery housing and the electrode assembly for collecting generated gases, and the unsealed residence portion is formed outside an electrode assembly housing adjacent to a sealed portion on one side. However, while the introduction of the unsealed residence portion is intended to collect gases, it increases the complexity of both the overall battery structure and its assembly process. This complexity may lead to higher manufacturing costs and may increase the likelihood of errors or defects during production, potentially affecting the battery's reliability and safety. Furthermore, the presence of the unsealed residence portion may make the battery more difficult to package and integrate into various applications because non-traditional structures may not fit seamlessly into existing battery compartments or constructions. This limitation restricts the battery's versatility and application in different devices or systems.
[0013] Therefore, an improved electrode cell is needed to solve the problems faced in the traditional structure. Summary of the Invention
[0014] The main objective of this invention is to provide an electrochemical cell based on a multidimensional electrode architecture, which inherently provides higher volumetric energy density and gravimetric energy density.
[0015] Another objective of this invention is to provide an electrochemical cell based on a multidimensional electrode architecture that eliminates the need for a metal substrate, thereby achieving higher volumetric energy density and gravimetric energy density.
[0016] Another object of the present invention is to provide an electrochemical cell based on a multidimensional electrode architecture, wherein the cell stacking structure realigns the current flow across terminals, resulting in a much shorter path length and current distribution over a wider cross-sectional area, thereby significantly reducing heat generation.
[0017] Another object of the present invention is to provide an electrochemical cell based on a multidimensional electrode architecture that eliminates the need for tabs.
[0018] Another object of the present invention is to provide an electrochemical cell based on a multidimensional electrode architecture, wherein the heat generation itself is significantly reduced due to the absence of tabs.
[0019] This invention relates to an electrochemical cell based on a multidimensional electrode architecture, the main objective of which is to achieve higher energy density, eliminate the need for a metal substrate, and reduce heat generation. This invention achieves a shorter current path and a wider current distribution, thereby reducing heat generation. Furthermore, this invention eliminates the need for tabs, thus simplifying the structure and further reducing heat generation.
[0020] In one embodiment, the present invention provides an electrochemical cell based on a multidimensional electrode architecture, comprising multiple layers including a lower current collector layer, an anode layer, a separator layer, a cathode layer, an adhesion layer, and an upper current collector layer. The anode layer includes multiple blind vias, and the upper surface of the anode layer and the inner surfaces of the blind vias are coated with a separator material. The separator layer facilitates the flow of lithium ions between the anode and cathode layers but blocks the passage of electrons, thereby preventing electrical short circuits. The blind vias are then filled with lead-shaped cathode material. Additionally, an adhesion layer is applied to the upper surface of the cathode layer, and a conductive layer, serving as the upper current collector layer, is located on top of the adhesion layer. The adhesion layer facilitates one or more electrical connections between the cathode layer and the upper current collector layer, and further, to ensure circuit integrity, a conductive component, serving as the lower current collector, is fixed to the bottom surface of the anode layer. The arrangement of the multiple layers forms a multidimensional electrode cell.
[0021] The above-described objects and advantages of the present invention will become apparent from the following description of the drawings, detailed description, and appended claims. Attached Figure Description
[0022] The electrochemical cell based on a multidimensional electrode architecture of the present invention can be understood by referring to the following figures.
[0023] Figure 1 This is an exploded view of an electrochemical cell based on a multidimensional electrode architecture according to an embodiment of the present invention.
[0024] Figure 2 This is a cross-sectional view of an electrochemical cell based on a multidimensional electrode architecture according to an embodiment of the present invention.
[0025] Figures 3(a), 3(b) and 3(c) are cross-sectional views of an electrochemical cell based on a multidimensional electrode architecture according to an embodiment of the present invention.
[0026] Figure 4(a) is an exploded view of an electrochemical cell based on a multidimensional electrode architecture according to an embodiment of the present invention.
[0027] Figure 4(b) is a cross-sectional view of an electrochemical cell based on a multidimensional electrode architecture according to an embodiment of the present invention. Detailed Implementation
[0028] The invention will now be described below with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments described herein. Rather, embodiments are provided so that this disclosure will be thorough and will fully convey the scope of the invention to those skilled in the art.
[0029] Many aspects of the invention can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale. Rather, the emphasis is on clearly illustrating the components of the invention. Furthermore, the same reference numerals denote corresponding parts throughout several views in the drawings. Before explaining at least one embodiment of the invention, it should be understood that embodiments of the invention are not limited in their application to the structural details and component arrangements set forth in the following description or shown in the drawings. Embodiments of the invention can be practiced and implemented in various ways. Additionally, the wording and terminology used herein are for descriptive purposes and should not be considered limiting.
[0030] This invention relates to an electrochemical cell based on a multidimensional electrode architecture, which eliminates the need for tabs and reduces heat generation.
[0031] In one embodiment, the present invention provides an electrochemical cell based on a multidimensional electrode architecture, comprising multiple layers including a lower current collector layer, an anode layer, a separator layer, a cathode layer, an adhesion layer, and an upper current collector layer. The anode layer includes multiple blind vias, and the upper surface of the anode layer and the inner surfaces of the blind vias are coated with a separator material. The separator layer facilitates the flow of lithium ions between the anode and cathode layers but blocks the passage of electrons, thereby preventing electrical short circuits. The blind vias are then filled with pin-shaped cathode material. Additionally, an adhesion layer is applied to the upper surface of the cathode layer, and a conductive layer, serving as the upper current collector layer, is located on top of the adhesion layer. The adhesion layer facilitates one or more electrical connections between the cathode layer and the upper current collector layer, and further, to ensure circuit integrity, a conductive component, serving as the lower current collector, is fixed to the bottom surface of the anode layer. The arrangement of the multiple layers forms a multidimensional electrode cell.
[0032] Figure 1 This is an exploded view of an electrochemical cell based on a multidimensional electrode architecture according to an embodiment of the present invention. The electrochemical cell (100) based on the multidimensional electrode architecture includes multiple layers, including but not limited to an anode layer (1), a separator layer (2), a cathode layer (3), an adhesion layer (4), an upper current collector layer (5), and a lower current collector layer (6).
[0033] In the electrochemical cell (100) based on a multidimensional electrode architecture, the anode layer (1) is an electrode that undergoes oxidation during the electrochemical reaction. The anode layer (1) serves as a negative electrode, where it loses multiple electrons to the circuit. In one embodiment, the anode layer (1) not only serves as an electrode but also interacts with surrounding materials such as an electrolyte. Furthermore, in another embodiment, the size and structure of the anode layer (1) are not limited and can be varied as required. The anode layer (1) facilitates ion inflow into the electrochemical cell (100) based on the multidimensional electrode architecture, and the anode layer (1) includes multiple blind holes that increase ion flow. Similarly, in one embodiment, the anode layer (1) has a pin-like structure, and the cathode layer (3) has multiple blind holes.
[0034] The membrane layer (2) physically isolates the anode layer (1) and the cathode layer (3) to prevent the two layers from coming into direct contact and thus avoid short circuits, while allowing multiple ions to pass through. In one embodiment, the membrane layer (2) is made of a porous material, which is preferably electrically insulating but allows ion transfer to prevent electrical short circuits.
[0035] The cathode layer (3) serves as the electrode for reduction during the electrochemical reaction. In one embodiment, the cathode layer (3) is made of cathode active materials known to those skilled in the art, along with standard conductive additives and binders. The cathode layer (3) allows the electrochemical cell based on a multidimensional electrode architecture to store and release energy. The cathode layer (3) provides ions for embedding into the anode layer (1). Similarly, in one embodiment, the cathode layer (3) has a pin-like structure.
[0036] The adhesion layer (4) serves as an intermediate layer, which improves the bonding or adhesion in the electrochemical cell based on the multidimensional electrode architecture to maintain the integrity and performance of the electrochemical cell based on the multidimensional electrode architecture. The adhesion layer (4) promotes the electrical connection between the cathode layer (3) and the upper current collector layer (5).
[0037] The upper current collector layer (5) and the lower current collector layer (6) complete the circuitry of the electrochemical cell (100) based on the multidimensional electrode architecture. During charge and discharge cycles, the upper current collector layer (5) and the lower current collector layer (6) collect and transport multiple electrons, causing them to travel back and forth between the anode layer (1) and the cathode layer (3). In one embodiment, the upper current collector layer (5) and the lower current collector layer (6) do not participate in the electrochemical reaction but promote current flow in the electrochemical cell based on the multidimensional electrode architecture. In another embodiment, the upper current collector layer (5) and the lower current collector layer (6) are made of highly conductive materials, such as copper, aluminum, or other conductive substrates, which provide high conductivity and chemical stability.
[0038] The arrangement of layers in an electrochemical cell based on a multidimensional electrode architecture is not limited to any particular construction or order. Various alternative arrangements and layer combinations are within the scope of this invention. Figure 1 This is illustrative and does not limit the arrangement of the layers. Furthermore, these layers can be modified or changed without departing from the intended scope of the invention.
[0039] The anode layer (1) includes multiple blind holes, the height of which is varied to suit the required dimensions, and the depth of these blind holes is 0.1 mm to 2 mm less than the height of the anode layer (1). Furthermore, the upper surface of the anode layer (1) and the inner surface of the blind holes are coated with a diaphragm material.
[0040] The blind via is designed to ensure that one or more cathode pins do not penetrate the anode layer (1). Furthermore, the bottom of the blind via also allows a diaphragm layer (2) to form at the bottom, thereby preventing the cathode pins from contacting the current collector layer (5) at the bottom of the stack and causing a short circuit. The stack is obtained after all layers of multidimensional electrodes have been placed.
[0041] In one embodiment, a blind hole is a cylindrical or conical cavity drilled or formed in the anode layer (1). The blind hole prevents the cathode pins from reaching or piercing the anode layer (1), thereby preventing any potential short circuits or misalignments with the electrochemical cell based on the multidimensional electrode architecture.
[0042] The dimensions of the blind holes described herein are not limited to any specific measurement. The scope of this invention can include blind holes of various sizes and proportions. The size and location of the blind holes can be adjusted or changed without departing from the intended scope of this invention.
[0043] The separator layer (2) facilitates the flow of lithium ions between the anode layer (1) and the cathode layer (3), but prevents electrons from passing through, thereby preventing electrical short circuits. The separator layer (2) has a thickness ranging from 5 to 150 micrometers and is coated with blind holes in the anode layer (1). The blind holes are then filled with pin-shaped cathode material.
[0044] Lead-shaped cathode materials consist of cathode active material powder connected to a network of conductive additives (metal / carbon) held together by a standard battery-grade polymer binder. "Lead-shaped" refers to the cylindrical lead shape, which provides a geometric advantage in ion transport. Thus, lead-shaped cathode materials allow ion transport across thicker electrodes (diameter) without altering the kinetic rate.
[0045] The separator layer (2) is composed of one or more ceramic powders, polymers, and fibers (i.e., a mixture of alumina, titanium dioxide, boron nitride, and other components), which form a porous layer and are held together by an adhesive (e.g., a standard battery electrode adhesive). The separator layer (2) provides thermomechanical and electrochemical stability and also facilitates ion transport.
[0046] Additionally, an adhesion layer (4) is applied to the upper surface of the cathode layer (3), and a conductive layer is used as an upper current collector layer (5) located on top of the adhesion layer (4). The adhesion layer (4) facilitates one or more electrical connections between the cathode layer and the upper current collector layer (5). Furthermore, to complete the circuit, a conductive component used as a lower current collector layer (6) is fixed to the bottom surface of the anode layer (1).
[0047] Figure 2 Figure 3(b) and Figure 3(c) are cross-sectional views of an electrochemical cell based on a multidimensional electrode architecture according to an embodiment of the present invention.
[0048] This invention eliminates the need for a metal substrate, thus providing higher volumetric and gravimetric energy densities. Furthermore, the redesigned current flow path across the cell (100) terminals shortens the path length while facilitating its distribution over a significantly expanded cross-sectional area. This feature results in reduced heat generation during cell (100) operation.
[0049] In addition, the structure of the electrochemical cell (100) based on the multidimensional electrode architecture eliminates the tabs or connectors, thereby eliminating the current concentration problem and the associated overheating problem.
[0050] Furthermore, the electrochemical cell (100) based on a multidimensional electrode architecture eliminates the need for complex cooling mechanisms, which are typically required to mitigate heat-related problems in conventional cells. In addition, the ability of this invention to maintain a lower operating temperature allows for faster cell charging.
[0051] The electrochemical cell (100) based on a multidimensional electrode architecture includes an insulating cap (7) (as shown in Figures 4(a) and 4(b)) for providing insulation between the anode layer (1) and the cathode layer (3).
[0052] The insulating cap (7) is an optional component in the electrochemical cell (100) based on a multidimensional electrode architecture.
[0053] In one embodiment, the above-described structure of the electrochemical cell (100) based on a multidimensional electrode architecture is reversible for both the anode layer (1) and the cathode layer (3). The two configurations can be conveniently used interchangeably, i.e., the cathode layer (3) has a blind hole structure and the anode layer (1) has a pin-like structure.
[0054] Example 1 Exemplary operation of an electrochemical cell based on a multidimensional electrode architecture This invention provides an electrochemical cell based on a multidimensional electrode architecture, which has extended lifespan and fast charging capability, achieved by eliminating the metal substrate, optimizing the current flow path, and eliminating the need for tabs.
[0055] During charging, lithium ions are released from the lattice structure of the cathode active material (i.e., the cathode layer (3)) along with an equal number of electrons. The lithium ions enter the electrolyte phase that fills the pores of the cathode layer (3), the separator layer (2), and the anode layer (1), thus providing a continuous medium for ion transport across the stack. On the other hand, electrons cannot flow through the electrolyte but instead flow through a network of conductive additives to multiple terminals from which ions enter the external circuitry.
[0056] Lithium ions pass through the membrane layer (2), flow through the electrolyte, and reach the surface of the anode layer (1).
[0057] Electrons flow through the external circuit to another terminal, from which they flow through the conductive additive network distributed throughout the anode layer (1) to reach the surface of the anode layer (1). Thereafter, lithium ions and electrons recombine on the surface of the anode layer (1) and enter the anode lattice structure of the anode layer (1).
[0058] Furthermore, during discharge, the reverse process occurs. Further, the three-dimensional structure of this invention changes the geometry of the cell stack from a flat layer to interlocked cathode pins in a honeycomb anode matrix, with ceramic separator layers between the cathode pins. Furthermore, the three-dimensional structure alters the geometry of the electron and ion pathways. The transport mechanism remains unchanged.
[0059] Example 2 Exemplary Implementation of Electrochemical Cells Based on Multidimensional Electrode Architecture This invention provides an electrochemical cell based on a multidimensional electrode architecture. Furthermore, all layers of this invention are fixed to each other by purely mechanical contact (i.e., pressure) or by deposition.
[0060] The anode layer (1) is fixed to the lower current collector layer (6) by applying appropriate pressure. The diaphragm layer (2) is fixed to the anode layer (1) by deposition (e.g., by slurry casting / slip casting / spraying / coating, etc.). The cathode layer (3) is fixed only by insertion and is held in place by interlocking geometry (friction prevents relative movement between the diaphragm layer (2) and the cathode layer (3).
[0061] Subsequently, the upper current collector layer (5) is connected to the cathode pin by using a carbon paste layer and applying appropriate pressure. The electrochemical cell (100) based on the multidimensional electrode architecture includes an insulating cap (7) for providing insulation between the anode layer (1) and the cathode layer (3).
[0062] Example 3 Experimental Analysis This invention provides an electrochemical cell based on a multidimensional electrode architecture, which has extended lifespan and fast charging capability, achieved by eliminating the metal substrate, optimizing the current flow path, and eliminating the need for tabs.
[0063] Furthermore, conventional cell designs use copper and aluminum foil as substrates for coating the electrode layers, and these substrates account for approximately 20%-25% of the cell mass. In this invention, these metal foils are not required as substrates, therefore, the energy density may be increased by 25%-33%.
[0064] This invention significantly improves the cycle life of battery cells because cell degradation in lithium-ion batteries is primarily driven by electrolyte degradation or parasitic reactions involving electrolyte molecules. Like all reactions, these parasitic reactions require energy, which is provided as heat during charging. Because the resistance is reduced by 10 times, the heat generated is also reduced to 1 / 10, potentially reducing the extent of parasitic reactions and thus cell degradation. Therefore, the electrochemical cell based on the multidimensional electrode architecture of this invention may extend the cycle life by up to 10 times.
[0065] Therefore, the present invention provides an electrochemical cell based on a multidimensional electrode architecture, which has extended lifespan and fast charging capability, achieved by eliminating the metal substrate, optimizing the current flow path, and eliminating the need for tabs.
[0066] Many modifications and other embodiments of the invention described herein will readily occur to those skilled in the art upon benefit from the teachings presented in the foregoing description and the accompanying drawings. Therefore, it should be understood that the invention is not limited to the specific embodiments disclosed, and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terminology is used herein, it is used only in a general and descriptive sense and not for limitation.
[0067] The foregoing description of embodiments of the present invention is presented for illustrative and descriptive purposes. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed, and modifications and variations are possible or may be obtained from practice of the invention in light of the foregoing teachings. The embodiments were chosen and described to explain the principles of the invention and its practical application, enabling those skilled in the art to apply the invention in various embodiments with various modifications contemplated for a particular purpose.
Claims
1. An electrochemical cell (100) based on a multidimensional electrode architecture, comprising: Anode layer (1); Diaphragm layer (2); as well as Cathode layer (3); in, The electrochemical cell (100) based on the multidimensional electrode architecture includes an upper current collector layer (5), an adhesion layer (4), and a lower current collector layer (6). The anode layer (1) facilitates ion inflow into the electrochemical cell (100) based on the multidimensional electrode architecture, and the anode layer (1) includes a plurality of blind holes that increase the flow of ions; The cathode layer (3) provides ions, which are then embedded in the anode layer (1), and the cathode layer (3) has a pin-like structure; The membrane layer (2) promotes the flow of ions between the anode layer (1) and the cathode layer (3) to prevent electrical short circuit problems; The adhesion layer (4) facilitates the electrical connection between the cathode layer (3) and the upper current collector layer (5); and The upper current collector layer (5) and the lower current collector layer (6) complete the circuitry of the electrochemical cell (100) based on the multidimensional electrode architecture.
2. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The anode layer (1), the diaphragm layer (2), the cathode layer (3), the upper current collector layer (5), the adhesion layer (4), and the lower current collector layer (6) are fixed to each other by at least one of mechanical contact process and deposition process.
3. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The depth of the plurality of blind holes is 0.1 mm to 2 mm less than the anode height.
4. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The inner surfaces of the plurality of blind holes are coated with diaphragm material.
5. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The multiple blind holes are filled with pin-shaped cathode material.
6. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The multiple blind holes ensure that the pin-shaped cathode material moves through the anode layer (1).
7. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The pin-shaped cathode material is composed of a predefined number of cathode active material powders, which allow the transport of multiple ions without altering the kinetic rate.
8. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The anode layer (1) has a pin-like structure, and the cathode layer (3) has a plurality of blind holes.
9. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The diaphragm layer (2) is sandwiched between the cathode layer (3) and the anode layer (1).
10. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The thickness of the membrane layer (2) ranges from 5 to 150 micrometers.
11. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The membrane layer (2) is composed of one or more ceramic powders, polymers and fibers.
12. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The adhesion layer (4) is sandwiched between the cathode layer (3) and the upper current collector layer (5).
13. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The upper current collector layer (5) is fixed on the upper surface of the adhesive layer (4).
14. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The lower current collector layer (6) is fixed to the bottom surface of the anode layer (1).
15. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The electrochemical cell (100) based on the multidimensional electrode architecture achieves an energy density increase of 25% to 33%.
16. The electrochemical cell (100) based on a multidimensional electrode architecture according to claim 1, wherein, The electrochemical cell (100) based on a multidimensional electrode architecture includes an insulating cap (7) for providing insulation between the anode layer (1) and the cathode layer (3).
Citation Information
Patent Citations
Battery Module
KR1020130021784A
Pouch-type secondary battery having an non-sealing residue portion
US8277970B2