Lithium ion secondary battery and negative electrode structure thereof

Abstract

A lithium ion secondary battery includes a positive electrode including a first collector layer and a first active material, a negative electrode, a separator between the positive electrode and the negative electrode, an electric field electrode on a side of the negative electrode opposite to the positive electrode, and a first insulating layer isolating the negative electrode from the electric field electrode.

Description

Technical Field

[0001] The present invention belongs to the field of secondary batteries, and more specifically, relates to a lithium ion secondary battery having an electric field electrode for inhibiting the growth of lithium dendrites. Background Art

[0002] Lithium metal has always been considered as an ideal negative electrode material for high energy density batteries due to its ultra-high theoretical permittivity, extremely low redox potential and low density. The development of lithium metal electrodes is of great significance to the development of solid-state batteries. However, the safety issues caused by the growth of lithium dendrites during battery cycling have seriously hindered the commercial application of lithium metal batteries. The reduction of lithium ions during battery charging may form lithium dendrites. The growth of lithium dendrites will cause the interface between the electrode and the electrolyte to be unstable during the cycle of lithium-ion batteries, destroying the generated solid electrolyte interface film (SEI). Furthermore, lithium dendrites will continuously consume electrolytes during growth and cause irreversible deposition of metallic lithium, thereby reducing the coulombic efficiency of the battery. The lithium dendrites formed may even pierce the isolation membrane in severe cases, causing internal short circuits and thermal runaway of lithium-ion batteries, triggering combustion and explosion. Therefore, how to inhibit the growth of lithium dendrites and conceive a safe lithium metal battery configuration has always been one of the goals that technicians in this field have worked hard to study. Summary of the invention

[0003] In order to inhibit the growth of lithium dendrites, the present invention proposes a novel lithium ion secondary battery, which is characterized by having an additional electric field electrode near the negative electrode to provide an additional electric field to change the cation distribution in the negative electrode reduction reaction, thereby reducing the chance of dendrite formation.

[0004] One object of the present invention is to provide a lithium-ion secondary battery, comprising: a positive electrode, comprising a first collector layer and a first active material located on the first collector layer; a negative electrode, comprising a second collector layer; an isolation membrane, located between the positive electrode and the negative electrode; an electric field electrode, located on a side of the negative electrode opposite to the positive electrode; and a first insulating layer, isolating the negative electrode from the electric field electrode.

[0005] According to one embodiment of the present invention, the lithium-ion secondary battery further includes a second active material located on a side of the second current collecting layer opposite to the electric field electrode.

[0006] According to another embodiment of the present invention, the second active material is selected from the following materials: graphite, soft carbon, hard carbon, interphase carbon particles, carbon fibers, carbon nanotubes, silicon, silicon oxides, carbon silicon composites, silicon alloys, tin, tin oxides, lithium titanate, lithium, lithium carbon composites and lithium alloys.

[0007] According to another embodiment of the present invention, the first active material is selected from the following materials: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide.

[0008] According to another embodiment of the present invention, the first current collecting layer is selected from the following materials: aluminum mesh, nickel mesh, and porous carbon paper made of nanofibers, carbon nanotubes or graphene.

[0009] According to another embodiment of the present invention, the second collector layer is selected from the following materials: copper, titanium and nickel.

[0010] According to another embodiment of the present invention, the isolation film is selected from the following materials: polyethylene terephthalate (PET), polyvinylidene fluoride (PVDF), polyamide (nylon), polyurethane, polycarbonate, polyester, polyetheretherketone (PEEK), polyethersulfone (PES), polyimide (PI), polyamideimide, polyether, polyoxymethylene, polybutylene terephthalate, polycycloalkanoate, polybutene, acrylonitrile-butadiene styrene copolymer (ABS), polystyrene copolymer, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polysiloxane polymer, polybenzimidazole (PBI), polybenzoxazole (PBO), polyphenylene sulfide, polyaryletherketone, polyperfluorocyclobutane, polytetrafluoroethylene (PTFE), polyvinylidene fluoride copolymer or terpolymer, polyvinylidene chloride, polyvinyl fluoride, liquid crystal polymer, poly (p-hydroxybenzoic acid), polyaromatic amide and polyphenylene ether.

[0011] According to another embodiment of the present invention, the lithium ion secondary battery further includes an electrolyte located in the lithium ion secondary battery, and the electrolyte is not in contact with the electric field electrode.

[0012] According to another embodiment of the present invention, the material of the electrolyte comprises a carbonate solvent in which a lithium salt is dissolved.

[0013] According to another embodiment of the present invention, the lithium-ion secondary battery further includes tabs extending from the positive electrode, the negative electrode, and the electric field electrode.

[0014] According to another embodiment of the present invention, the lithium-ion secondary battery further includes a second insulating layer located on a side of the electric field electrode opposite to the first insulating layer.

[0015] Another object of the present invention is to provide a negative electrode structure for a lithium-ion secondary battery, comprising: a negative electrode including a collector layer; an electric field electrode located on one side of the negative electrode; and a first insulating layer isolating the negative electrode from the electric field electrode.

[0016] According to one embodiment of the present invention, the negative electrode structure for a lithium-ion secondary battery further includes an active material located on a side of the collector layer opposite to the electric field electrode.

[0017] According to another embodiment of the present invention, the active material is selected from the following materials: graphite, soft carbon, hard carbon, interphase carbon particles, carbon fibers, carbon nanotubes, silicon, silicon oxides, carbon silicon composites, silicon alloys, tin, tin oxides, lithium titanate, lithium, lithium carbon composites and lithium alloys.

[0018] According to another embodiment of the present invention, the collector layer is selected from the following materials: copper, titanium and nickel.

[0019] According to another embodiment of the present invention, the negative electrode structure for a lithium-ion secondary battery further includes tabs extending from the negative electrode and the electric field electrode.

[0020] According to another embodiment of the present invention, the negative electrode structure for a lithium-ion secondary battery further includes a second insulating layer located on a side of the electric field electrode opposite to the first insulating layer.

[0021] These and other objects of the present invention will become more apparent to the reader after reading the following detailed description of the preferred embodiment described in conjunction with the various figures and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] This specification contains drawings and constitutes a part of this specification, so that readers can further understand the embodiments of the present invention. These drawings depict some embodiments of the present invention and illustrate their principles together with the description herein. In these drawings:

[0023] Figure 1 is a schematic cross-sectional view of a lithium-ion secondary battery according to an embodiment of the present invention;

[0024] Figure 2 is a schematic cross-sectional view of a lithium-ion secondary battery according to another embodiment of the present invention; and

[0025] Figure 3 FIG. 4 is a line perspective view of a lithium ion secondary battery according to another embodiment of the present invention.

[0026] Figure 4 The figure is a comparison diagram of the ratio of the number of cycles to the remaining capacity of the lithium ion secondary battery of the present invention and the existing lithium ion secondary battery.

[0027] It should be noted that all the drawings in this specification are of a legend nature. For the sake of clarity and convenience of illustration, the components in the drawings may be exaggerated or reduced in size and proportion. Generally speaking, the same reference symbols in the drawings will be used to indicate corresponding or similar component features after modification or in different embodiments.

[0028]

Explanation of symbols

[0029] 10 Secondary batteries

[0030] 20 Secondary batteries

[0031] 100 First collector layer

[0032] 100a Tab

[0033] 102 Second collector layer

[0034] 102a Tab

[0035] 104a Tab

[0036] 106 Isolation film

[0037] 107 Electrolytes

[0038] 108 First Active Material

[0039] 110 First insulation layer

[0040] 112 Second insulation layer

[0041] 114 Second active material

[0042] FE Electrode (Electric Field Electrode)

[0043] NE electrode (negative electrode)

[0044] PE electrode (positive electrode) DETAILED DESCRIPTION

[0045] The present invention will be described in detail below with reference to the accompanying drawings, which form a part of the present invention and are shown in drawings and in the form of specific embodiments according to which the present invention can be implemented. These embodiments will describe sufficient details to enable a person of ordinary skill in the art to implement the present invention. For the sake of simplicity and convenience, the scale and proportion of certain parts in the drawings may be deliberately reduced or expressed in an exaggerated manner. Other embodiments or structural, logical and electrical changes may be adopted in the invention without departing from the scope of the present invention. Therefore, the detailed description below should not be viewed in a limiting manner, and the scope of the present invention will be defined by the scope of the attached patent application.

[0046] The reader should be able to easily understand that the meanings of "on", "above", and "over" in this case should be interpreted in a broad sense, such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but can also include the meaning of being "above" or "over" something with no intervening features or layers therebetween (i.e., directly on something). In addition, spatial related terms such as "under", "below", "lower", "over", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or more elements or features, as shown in the drawings.

[0047] As used herein, the term "layer" refers to a portion of material including a region having a thickness. The layer may extend over the entirety of a structure below or above, or may have a scope less than the scope of the structure below or above. In addition, the layer may be a region of a homogeneous or heterogeneous continuous structure having a thickness less than the thickness of the continuous structure. For example, the layer may be located between the top and bottom surfaces of a continuous structure or between any horizontal planes at the top and bottom surfaces. The layer may extend horizontally, vertically, and / or along an inclined surface. A substrate may be a layer, which may include one or more layers, and / or may have one or more layers on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductors and contact layers (wherein contacts, interconnect lines, and / or vias are formed) and one or more dielectric layers.

[0048] The reader can generally understand the terms at least in part from their usage in context. For example, at least in part depending on the context, the term "one or more" as used herein may be used to describe any feature, structure, or property in a singular sense, or may be used to describe a combination of features, structures, or properties in a plural sense. Similarly, at least in part depending on the context, terms such as "a", "an", "the", or "said" may likewise be understood to convey a singular usage or to convey a plural usage. Additionally, the term "based on" can be understood to not necessarily aim to convey an exclusive set of factors, but may allow for the existence of additional factors that are not necessarily explicitly described, which also at least in part depends on the context.

[0049] The reader can better understand that when words such as "comprising" and / or "containing" are used in this specification, they specify the existence of the stated features, regions, wholes, steps, operations, elements, and / or components, but do not preclude the existence or addition of one or more other features, regions, wholes, steps, operations, elements, components, and / or combinations thereof.

[0050] Please refer to Figure 1, which is a schematic diagram of a secondary battery according to an embodiment of the present invention. The secondary battery 10 of the present invention generally contains three electrodes, namely a positive electrode PE, a negative electrode NE and an electric field electrode FE, which are important parts of the battery. Depending on the type of battery, such as the lithium-ion battery of the present invention, it is composed of a variety of different materials (chemical substances).

[0051] Among them, the positive electrode PE is composed of a first collector layer 100 and a first active material 108. The positive electrode PE has a higher potential than the corresponding negative electrode (such as the negative electrode NE). During discharge, the positive electrode PE acts as a cathode, which means that electrons flow from the external circuit into the battery through the positive electrode PE. When the electrons reach the connected positive electrode PE from the circuit, a reduction half-reaction occurs. Correspondingly, cations (such as lithium ions) are precipitated from the negative electrode NE during the process and embedded in the first active material (such as lithium cobalt oxide LiCoO2) 108 of the positive electrode PE through the isolation membrane 106 and the electrolyte 107. The main function of the first collector layer 100 is to gather the current generated by the first active material 108 in the process into a larger current for output to the outside. To achieve this purpose, the first collector layer 100 is covered with a layer of the first active material 108, which is in full contact with the first collector layer 100, and the smaller the internal resistance, the better. The first active material 108 is the key to the storage and transportation of electrical energy. It can promote the reversible movement of cations between the electrode and the electrolyte and maintain structural stability during the charge and discharge cycle of the battery. In a lithium-ion battery system, the material of the first collector layer 100 can be selected from aluminum mesh or aluminum foil, nickel mesh or nickel foil, and porous carbon paper made of nanofibers, nanocarbon tubes or graphene. For example, an embodiment of the present invention uses aluminum foil as the first collector layer 100. The first active material can be selected from lithium cobalt oxide (LiCoO2), lithium nickel oxide (LiNiO2), lithium manganese oxide (LiMnO2), lithium nickel manganese oxide (LiNi x Mn y O2), lithium nickel cobalt manganese oxide (LiNi x Mn y Co z O2 and lithium nickel cobalt aluminum oxide (LiNi x Al y Co z O2).

[0052] On the other hand, the negative electrode NE in this embodiment is simply composed of a second collector layer 102. The negative electrode NE has a lower potential than the corresponding positive electrode PE. During discharge, the negative electrode NE acts as an anode, which means that current flows from the external circuit into the battery through the negative electrode NE. During the process, the oxidation half reaction at the negative electrode NE produces positively charged cations (such as lithium ions) and negatively charged electrons (e-). The cations move to the positive electrode PE via the electrolyte 107, where they recombine in the aforementioned reduction half reaction. In other words, the main function of the negative electrode NE is to provide cations to be embedded in the first active material 108 of the positive electrode PE. It should be noted that since there is no active material on the second collector layer 102 in this embodiment, the second collector layer 102 must also serve as the active material of the negative electrode NE during the above-mentioned oxidation-reduction process. To achieve this purpose, the second collector layer 102 needs to have vacancies to accommodate the corresponding cations. In a lithium-ion battery system, the material of the second collector layer 102 can be selected from graphite, soft carbon, hard carbon, mesocarbon microbeads (MCMB), carbon fibers, carbon nanotubes, silicon, silicon oxides, carbon silicon composites, silicon alloys, tin, tin oxides, lithium titanate, lithium, lithium carbon composites, and lithium alloys.

[0053] Still refer to Figure 1 . A separator 106 and an electrolyte 107 are provided between the positive electrode PE and the negative electrode NE. In the embodiment, the main function of the separator 106 is to electrically isolate the positive electrode PE and the negative electrode NE from each other, to prevent the two electrodes from directly electrically contacting each other and short-circuiting, which may cause the battery to fail or be unsafe. In addition, the separator 106 may be a porous material that allows ion conduction, so that ions can flow between the positive electrode PE and the negative electrode NE during the charge and discharge cycle, which is very important for the operation of the battery. The separator 106 may also provide mechanical support, which helps to maintain the integrity of the battery structure, separate the two electrodes and ensure that the battery can maintain structural stability during operation or when subjected to external forces. In the present invention, the isolation film 106 can be selected from the following materials: polyethylene terephthalate (PET), polyvinylidene fluoride (PVDF), polyamide (nylon), polyurethane, polycarbonate, polyester, polyetheretherketone (PEEK), polyethersulfone (PES), polyimide (PI), polyamideimide, polyether, polyoxymethylene, polybutylene terephthalate, polycycloalkanoate, polybutene, acrylonitrile-butadiene styrene copolymer (ABS), polystyrene copolymer, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polysiloxane polymer, polybenzimidazole (PBI), polybenzoxazole (PBO), polyphenylene sulfide, polyaryletherketone, polyperfluorocyclobutane, polytetrafluoroethylene (PTFE), polyvinylidene fluoride copolymer or terpolymer, polyvinylidene chloride, polyvinyl fluoride, liquid crystal polymer, poly(p-hydroxybenzoic acid), polyaromatic amide and polyphenylene ether.

[0054] As for the electrolyte 107, the electrolyte 107 acts as a chemical medium that allows cations to migrate therein, and is responsible for promoting the reversible movement of cations between the positive electrode PE and the negative electrode NE. The electrolyte 107 participates in the electrochemical reaction at the two electrodes, and it needs to be chemically stable and compatible with the electrode materials to ensure the normal operation and sustainability of the battery. The material composition and properties of the electrolyte 107 will affect the overall performance, efficiency and safety of the battery, among which factors such as ion conductivity, stability, and allowable temperature are very important for optimizing the operation of the battery. In a lithium-ion battery system, the electrolyte 107 can be a carbonate solvent containing a lithium salt, such as lithium hexafluorophosphate (LiPF6), lithium sulfate (Li2SO4), lithium bis(trifluoromethylsulfonyl)amide (LiFSI), lithium tetrafluoroborate (LiBF4) or lithium perchlorate (LiClO4).

[0055] Still refer to Figure 1 . The feature of the present invention is that the negative electrode NE has an additional electric field electrode FE on one side relative to the positive electrode PE. The two sides of the electric field electrode FE are respectively provided with a first insulating layer 110 and a second insulating layer 112. The first insulating layer 110 is located between the electric field electrode FE and the negative electrode NE to electrically isolate the two. In the invention, the electric field electrode FE can generate an external electric field to inhibit the growth of lithium dendrites during charging. When the electric field is applied, it can enhance the movement of cations through the electrolyte 107 to the surface of the negative electrode NE, causing the cations to be more evenly distributed on the negative electrode NE, thereby reducing the possibility of dendrite formation caused by local high current density. Furthermore, the application of an electric field can change the energy morphology of the electrode surface. This change can increase the energy barrier required for dendrite nucleation, making it more difficult for dendrites to start growing in local areas. In addition, the electric field can affect the kinetic energy of the electrochemical reaction occurring at the negative electrode NE. By optimizing the reduction reaction state at the negative electrode NE, the application of this electric field helps to achieve a smoother and more controllable deposition process. The electric field electrode FE in the present invention can be, but is not limited to, any conductive material, such as aluminum (Al), copper (Cu), nickel (Ni), titanium (Ti). The first insulating layer 110 and the second insulating layer 112 can be, but are not limited to, any material with good electrical insulation properties, such as polyimide (PI), polyethylene (PE), polypropylene (PP) or epoxy resin. In some embodiments, the negative electrode NE and the electric field electrode FE can be collectively regarded as the negative electrode structure of the secondary battery.

[0056] Now please refer to Figure 2 , which is a cross-sectional schematic diagram of a lithium-ion secondary battery 20 according to another embodiment of the present invention. Figure 2 The embodiment and the aforementioned Figure 1The embodiment of is very similar, the difference is that the second active material 114 is provided on the second collector layer 102 of the negative electrode NE. The second collector layer 102 in this embodiment simply serves as a collector sheet to collect the current generated by the second active material 114. The second active material 114 needs to be distributed on the first collector layer 100 and in full contact with it, and the smaller its internal resistance, the better. In a lithium-ion battery system, the material of the second collector layer 102 can be selected from copper (Cu), titanium (Ti), and nickel (Ni). For the second active material 114, the second active material 114 in this embodiment needs to provide vacancies to accommodate the corresponding cations. In a lithium-ion battery system, the material of the second active material 114 can be selected from graphite, soft carbon, hard carbon, interphase carbon particles, carbon fibers, carbon nanotubes, silicon, silicon oxides, carbon silicon composites, silicon alloys, tin, tin oxides, lithium titanate, lithium, lithium carbon composites, and lithium alloys.

[0057] Now please refer to Figure 3 , which is a line perspective view of a lithium-ion secondary battery 20 according to the above embodiment of the present invention. As for the three electrodes PE, NE, and FE of the present invention, each of the three electrodes PE, NE, and FE has a pole ear 100a, 102a, and 104a. More specifically, the pole ear 100a extends upward from the first collector layer 100 of the positive electrode PE, the pole ear 102a extends upward from the second collector layer 102 of the negative electrode NE, and the pole ear 104a extends upward from the electric field electrode FE. The pole ears 100a, 102a, and 104a play an important role in connecting the electrodes PE, NE, and FE of the battery to an external circuit (such as a battery external terminal). They ensure that the current generated by the battery can flow into or from the circuit of the device or system. By fixing the pole ears 100a, 102a, and 104a to the battery external terminal, they can also maintain the structural stability of the internal components of the battery, which helps to maintain the integrity of the battery structure during operation and processing.

[0058] Still refer to Figure 3 It should be understood that the overlapping area of ​​the isolation film 106 must be larger than the area of ​​the first active material 108 and the second active material 114 on both sides to completely electrically isolate the two. Similarly, the overlapping area of ​​the electric field electrode FE (including the first insulating layer 110 and the second insulating layer 112 on both sides) must be larger than the area of ​​the adjacent second collector layer 102 to electrically isolate the two and provide a complete electric field distribution to suppress the growth of lithium dendrites during charging.

[0059] It is obvious to those skilled in the art that the structures and components of the aforementioned secondary batteries can be manufactured, assembled and / or housed in various forms and arrangements, each of which has a specific suitable application, demand or design occasion, for example, the appearance can be a cylindrical battery, a square can battery, a soft pack battery, a button battery, a square battery, a flexible battery or other customized shape batteries, and use containers such as metal cans, plastic containers, customized shells, etc. The choice of battery type and container depends on its specific application requirements, including space limitations, energy density, weight, and thermal management requirements. Since these components are well known to those skilled in the art and are not important features of the present invention, their detailed description will be omitted here to avoid blurring the subject matter and technical features of the present invention.

[0060] Now please refer to Figure 4 , which is a comparison chart of the ratio of the number of cycles to the remaining capacity of the lithium ion secondary battery of the present invention and the existing lithium ion secondary battery. Figure 2 Taking the negative electrode structure in the lithium-ion secondary battery shown as an example, the second active material 114 of the negative electrode NE is a lithium metal with a thickness of 25 μm, the second collector layer 102 is a copper metal with a thickness of 8 μm, the first insulating layer 110 is a polyimide with a thickness of 60 μm, the electric field electrode FE is a copper metal with a thickness of 8 μm, the first active material 108 of the positive electrode PE is lithium cobalt manganese oxide, and the electrolyte is a carbonate electrolyte. The charging method is constant voltage (5V) charging to the battery voltage (4.2V), wherein the electric field electrode FE provides a potential difference of 5V between the positive electrode and the positive electrode, and the average charging rate is 0.4C (representing 0.4 times the total charge in 1 hour), and each charging and discharging operation is a cycle. As can be seen from the figure, compared with the prior art without an electric field electrode, the present invention controls the lithium ion concentration and charge distribution on the surface of the lithium metal through the electric field electrode FE, increases the probability of lithium ion reduction reaction, and reduces the chance of lithium metal reacting with the electrolyte and forming dendrites, thereby reducing the lithium ion loss ratio. Taking the battery capacity decay to 60% as the standard, the number of cycles of the present invention can reach 19 times, while the prior art can only have 12 times, which significantly and effectively reduces the loss of lithium ions during the charge and discharge cycle.

[0061] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A lithium ion secondary battery comprising: A positive electrode, comprising a first current collecting layer and a first active material disposed on the first current collecting layer; a negative electrode comprising a second current collecting layer; A separator, disposed between the positive electrode and the negative electrode; an electric field electrode located on a side of the cathode opposite to the anode; and A first insulating layer isolates the cathode from the electric field electrode. 2 . The lithium-ion secondary battery as claimed in claim 1 , further comprising a second active material located on a side of the second current collecting layer opposite to the electric field electrode.

3. The lithium ion secondary battery of claim 2, wherein the second active material is selected from the following materials: graphite, soft carbon, hard carbon, interphase carbon particles, carbon fibers, carbon nanotubes, silicon, silicon oxides, carbon silicon composites, silicon alloys, tin, tin oxides, lithium titanate, lithium, lithium carbon composites, and lithium alloys.

4. The lithium ion secondary battery as claimed in claim 1, wherein the first active material is selected from the following materials: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide. 5 . The lithium ion secondary battery as claimed in claim 1 , wherein the first current collecting layer is selected from the following materials: aluminum mesh, nickel mesh, and porous carbon paper made of nanofibers, carbon nanotubes or graphene. 6 . The lithium-ion secondary battery as claimed in claim 1 , wherein the second current collecting layer is selected from the following materials: copper, titanium and nickel.

7. The lithium ion secondary battery of claim 1 , wherein the separator is selected from the following materials: polyethylene terephthalate, polyvinylidene fluoride, polyamide, polyurethane, polycarbonate, polyester, polyetheretherketone, polyethersulfone, polyimide, polyamideimide, polyether, polyoxymethylene, polybutylene terephthalate, polycycloalkanoate, polybutene, acrylonitrile-butadiene styrene copolymer, polystyrene copolymer, polymethyl methacrylate, polyvinyl chloride, polysiloxane polymer, polybenzimidazole, polybenzoxazole, polyphenylene sulfide, polyarylene ether ketone, polyperfluorocyclobutane, polytetrafluoroethylene, polyvinylidene fluoride copolymer or terpolymer, polyvinylidene chloride, polyvinyl fluoride, liquid crystal polymer, poly(p-hydroxybenzoic acid), polyaromatic amide and polyphenylene ether. 8 . The lithium ion secondary battery as claimed in claim 1 , further comprising an electrolyte located in the lithium ion secondary battery, and the electrolyte is not in contact with the electric field electrode. 9 . The lithium ion secondary battery as claimed in claim 8 , wherein the electrolyte material comprises a carbonate solvent in which a lithium salt is dissolved. 10 . The lithium-ion secondary battery as claimed in claim 1 , further comprising tabs extending from the positive electrode, the negative electrode and the electric field electrode. 11 . The lithium-ion secondary battery as claimed in claim 1 , further comprising a second insulating layer located on a side of the electric field electrode opposite to the first insulating layer.

12. A negative electrode structure for a lithium ion secondary battery, comprising: a negative electrode including a current collecting layer; an electric field electrode located on one side of the cathode; and A first insulating layer isolates the cathode from the electric field electrode. 13 . The negative electrode structure for a lithium ion secondary battery as claimed in claim 12 , further comprising an active material located on a side of the collector layer opposite to the electric field electrode.

14. The negative electrode structure for a lithium ion secondary battery as claimed in claim 12, wherein the active material is selected from the following materials: graphite, soft carbon, hard carbon, interphase carbon particles, carbon fibers, carbon nanotubes, silicon, silicon oxides, carbon silicon composites, silicon alloys, tin, tin oxides, lithium titanate, lithium, lithium carbon composites and lithium alloys. 15 . The negative electrode structure for a lithium-ion secondary battery as claimed in claim 12 , wherein the current collecting layer is selected from the following materials: copper, titanium and nickel. 16 . The negative electrode structure for a lithium-ion secondary battery as claimed in claim 12 , further comprising tabs extending from the negative electrode and the electric field electrode. 17 . The negative electrode structure for a lithium-ion secondary battery as claimed in claim 12 , further comprising a second insulating layer located on a side of the electric field electrode opposite to the first insulating layer.

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