1463 results about "Solid-state battery" patented technology

Solid-state, ion-conducting batteries with an ion-conducting, solid-state electrolyte. The solid-state electrolyte has at least one porous region (e.g., porous layer) and a dense region (e.g., dense layer). The batteries are, for example, lithium-ion, sodium-ion, or magnesium-ion conducting solid-state batteries. The ion-conducting, solid-state electrolyte is, for example, a lithium-garnet material.

Set forth herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also set forth herein are lithium-stuffed garnet thin films having fine grains therein. Disclosed herein are novel and inventive methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are novel electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also set forth herein are methods for preparing novel structures, including dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also, the methods set forth herein disclose novel sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof.

Set forth herein are garnet material compositions, e.g., lithium-stuffed garnets and lithium-stuffed garnets doped with alumina, which are suitable for use as electrolytes and catholytes in solid state battery applications. Also set forth herein are lithium-stuffed garnet thin films having fine grains therein. Disclosed herein are novel and inventive methods of making and using lithium-stuffed garnets as catholytes, electrolytes and/or anolytes for all solid state lithium rechargeable batteries. Also disclosed herein are novel electrochemical devices which incorporate these garnet catholytes, electrolytes and/or anolytes. Also set forth herein are methods for preparing novel structures, including dense thin (<50 um) free standing membranes of an ionically conducting material for use as a catholyte, electrolyte, and, or, anolyte, in an electrochemical device, a battery component (positive or negative electrode materials), or a complete solid state electrochemical energy storage device. Also, the methods set forth herein disclose novel sintering techniques, e.g., for heating and/or field assisted (FAST) sintering, for solid state energy storage devices and the components thereof.

An impregnated solid state composite cathode is provided. The cathode contains a sintered porous active material, in which pores of the porous material are impregnated with an inorganic ionically conductive amorphous solid electrolyte. A method for producing the impregnated solid state composite cathode involves forming a pellet containing an active intercalation cathode material; sintering the pellet to form a sintered porous cathode pellet; impregnating pores of the sintered porous cathode pellet with a liquid precursor of an inorganic amorphous ionically conductive solid electrolyte; and curing the impregnated pellet to yield the composite cathode.

A first fine particle-containing solution is deposited on an appropriate substrate, and dried to form a first fine particle aggregate layer. Polymer particles are deposited on the first fine particle aggregate layer, and are supplied with a second fine particle-containing solution such that the polymer particles are immersed in the second fine particle-containing solution. The second fine particle-containing solution is dried to form a second fine particle aggregate layer containing a large number of the polymer particles embedded. A first structure precursor is completed at this stage. Then, the first structure precursor is separated from the substrate, and thermally treated. Thus, the production of a first solid electrolyte structure, which has a porous solid electrolyte portion and a dense solid electrolyte portion integrated, is completed.

A practical solid-state battery composed primarily of ceramic or glass materials and containing no liquid, gel or polymeric electrolytes. The invention utilizes solid-state electrolyte materials with solid-state anode and cathode materials along with construction concepts utilized in the multi layered ceramic capacitor (MLCC) industry to result in a compact primary or secondary battery.

The invention discloses a preparation method of an all-solid polymer electrolyte through in-situ ring opening polymerization of an epoxy compound, and an application of the all-solid polymer electrolyte in an all-solid battery. The preparation method is characterized in that a liquid-state epoxy compound, a lithium salt, a battery additive and the like are employed as precursors and are injected into between a positive pole sheet and a negative pole sheet of the battery, and under a heating condition, in-situ polymerization solidification is carried out to form the all-solid polymer electrolyte, and furthermore, the all-solid battery is produced. The ionic conductivity at room temperature of the all-solid polymer electrolyte can reach from 1*10<-5> S/cm to 9*10<-3> S/cm and electric potential window is 3.5-5 V. The all-solid polymer electrolyte is prepared through the in-situ copolymerization method, so that the all-solid polymer electrolyte has excellent contact with electrodes, thereby greatly improving interface compatibility of the solid-state battery, reducing interface wetting and modification steps of the solid-state battery, reducing production cost of the solid-state battery and improving performances of the solid-state battery. The invention also discloses an all-solid polymer lithium battery assembled from the all-solid polymer electrolyte.

The present invention discloses a preparation method of a complex lithium negative pole of a solid state battery, and belongs to the technical field of electrochemistry and new energy resources. The preparation method mainly comprises the steps: depositing lithium metal on three-dimensional carbon material or foam porous material gaps by using a heat infusing melting method or an electrodeposition method to obtain the complex lithium negative pole, wherein the application of a three-dimensional framework plays two roles, namely, providing adequate space for pre-storing lithium in the preparation process; providing a carrier for receiving metal lithium in a battery circulation process. The complex lithium negative pole can be widely applied in lithium metal batteries such as lithium ion batteries, lithium-air batteries, lithium-sulfur batteries, and solid state batteries. In the assembled symmetric solid state battery, under large electric current density of 5mA cm-2, a stable voltage decay (200mV) can still be kept after circulation for 100 times, in the battery circulation, the growth of lithium dendrites can be inhibited and the pole volume change can be stabilized, and the advantages of being good in circulation stability, and long service life can be realized; in the present invention, a carrier material is rich, and low in price; the process is controlled, the cost is low, and the batch production can be realized.

The present invention is directed to a higher power, thin film lithium-ion electrolyte on a metallic substrate, enabling mass-produced solid-state lithium batteries. High-temperature thermodynamic equilibrium processing enables co-firing of oxides and base metals, providing a means to integrate the crystalline, lithium-stable, fast lithium-ion conductor lanthanum lithium tantalate (La_1/3-xLi_3xTaO₃) directly with a thin metal foil current collector appropriate for a lithium-free solid-state battery.

In an example, the present invention provides a solid state battery device, e.g., battery cell or device. The device has a current collector region and a lithium containing anode member overlying the current collector region. The device has a thickness of electrolyte material comprising a first garnet material overlying the lithium containing anode member. The thickness of electrolyte material has a density ranging from about 80 percent to 100 percent and a porous cathode material comprising a second garnet material overlying the thickness of electrolyte material. The porous cathode material has a porosity of greater than about 30 percent and less than about 95 percent and a carbon bearing material overlying a surface region of the porous cathode material. In an example, the carbon bearing material comprises substantially carbon material, although there can be variations.

One embodiment provides a solid-state battery that has a positive-electrode layer; a negative-electrode layer; and a lithium-ion-conducting solid electrolyte layer disposed between the positive-electrode layer and the negative-electrode layer. The positive-electrode layer contains a positive-electrode active material and a solid electrolyte comprising a hydride of a complex. Said positive-electrode active material is sulfur-based, and the solid electrolyte layer contains a solid electrolyte comprising a hydride of a complex.

A method for producing a solid state battery including the steps of: (a) obtaining an active material slurry; (b) obtaining a solid electrolyte slurry; (c) obtaining a current collector slurry; (d) forming an active material green sheet and a solid electrolyte green sheet; (e) laminating the solid electrolyte green sheet on one surface of the active material green sheet to form a first green sheet group, and forming a current collector green sheet layer on the other surface of the active material green sheet to form a second green sheet group; (f) heating the second green sheet group at not less than 200° C. and not greater than 400° C. in an oxidizing atmosphere; and (g) baking the second green sheet group having heated in the step (f) in a low oxygen atmosphere at a baking temperature higher than the heating temperature in the step (f) to obtain a laminate.

An electrode active material layer includes an electrode active material and a sulfide solid state electrolyte material which is fused to a surface of the electrode active material and is substantially free of bridging sulfur.

The invention relates to a modified lithium-based composite negative material for a solid state battery and preparation and application of the material. The modified lithium-based composite negative material comprises 50-95 parts of lithium and 5-50 parts of a modified additive by weight; and the modified additive comprises one or multiple nitride or fluoride. The preparation method comprises thatthe lithium and modified additive are mixed, heated to 180-400 DEG C, stirred uniformly, and cooled to the room temperature; and the modified composite negative material is used to the solid state battery, and combined with a solid electrolyte. Compared with the prior art, the lithium metal is mixed with the modified additive by mixing in a heating fusing way, the surface energy of the lithium metal can be reduced effectively, elements including nitrogen and fluorine are introduced in a controllable way, the interfacial resistance between the solid electrolyte and lithium cathode is reduced effectively, the limit current that can be born by the solid electrolyte is increased, the recyclable charge and discharge capacity is improved, and the solid electrolyte and cathode interface is stable for a longer time in the long circulation process.

One or more interfacial layers in contact with a solid-state electrolyte and hybrid electrolyte materials. Interfacial layers comprise inorganic (e.g., metal oxides and soft inorganic materials) or organic materials (e.g., polymer materials, gel materials and ion-conducting liquids). The interfacial layers can improve the electrical properties (e.g., reduce the impedance) of an interface between an a cathode and/or anode and a solid-state electrolyte. The interfacial layers can be used in, for example, solid-state batteries (e.g., solid-state, ion-conducting batteries).

A method for manufacturing a solid-state battery device. The method can include providing a substrate within a process region of an apparatus. A cathode source and an anode source can be subjected to one or more energy sources to transfer thermal energy into a portion of the source materials to evaporate into a vapor phase. An ionic species from an ion source can be introduced and a thickness of solid-state battery materials can be formed overlying the surface region by interacting the gaseous species derived from the plurality of electrons and the ionic species. During formation of the thickness of the solid-state battery materials, the surface region can be maintained in a vacuum environment from about 10-6 to 10-4 Torr. Active materials comprising cathode, electrolyte, and anode with non-reactive species can be deposited for the formation of modified modulus layers, such a void or voided porous like materials.

The invention relates to one solid electrolyte materials and its process method for fix lithium battery, which is characterized by the following: Li2S and other sulfur compound B/S and A/I according to certain mole proportion for compounds to form non-crystal system to provide space for lithium ion transmission to get higher ion conductive rate, wherein, the materials have wider heat stable range to provide one ideal electrolyte prepare materials for solid lithium ion battery.

Solid-state batteries, battery components, and related processes for their production are provided. The battery electrodes or separators contain sintered electrochemically active material, inorganic solid particulate electrolyte having large particle size, and low melting point solid inorganic electrolyte which acts as a binder and/or a sintering aid in the electrode.

Embodiments of the invention generally relate to solid state battery structures, such as Li-ion batteries, methods of fabrication and tools for fabricating the batteries. One or more electrodes and the separator may each be cast using a green tape approach wherein a mixture of active material, conductive additive, polymer binder and/or solid electrolyte are molded or extruded in a roll to roll or segmented sheet/disk process to make green tape, green disks or green sheets. A method of fabricating a solid state battery may include: preparing and/or providing a green sheet of positive electrode material; preparing and/or providing a green sheet of separator material; laminating together the green sheet of positive electrode material and the green sheet of separator material to form a laminated green stack; and sintering the laminated green stack to form a sintered stack comprising a positive electrode and a separator.

A method of designing and manufacturing a solid-state electrochemical battery cell for a battery device. The method includes building a database of a plurality of first characteristics of a solid-state cells for a battery device and determining at least a third characteristic of the solid-state cell for a given application. The method also includes selecting at least one material of the solid-state electrochemical battery cell, the selected material being from the plurality of first characteristics and forming a plurality of factorial combinations of each component using the selected plurality of first characteristics to derive a respective plurality of solid-state electrochemical battery cells. The method performs a design optimization process for the third characteristic. A step of identifying an optimal design of the second characteristics with the selected first characteristics for each solid-state electrochemical battery cell from the plurality of solid-state cells is included.

The invention provides a thin film solid state (TFSS) battery that can conform to the surface of an apparatus having a complex, three-dimensional surface. The invention also provides methods for constructing the thin film solid state battery by forming components directly onto a substrate of a complex three-dimensional shape. The resulting thin film solid state battery can be used to power electronics associated with a variety of devices such as medical devices.