Method for improving solid-state battery interface stability by polymer electrolyte

A polymer, solid electrolyte technology, applied in the field of lithium germanium phosphate, lithium ion batteries, can solve the problems of low load of electrode active material, volume change of electrode material, poor cycle stability, etc., to avoid lithium loss, high air stability, The effect of improving compatibility
CN110233285AInactive Publication Date: 2019-09-13BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2019-09-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for improving solid-state battery interface stability by a polymer electrolyte belongs to the technical field of solid batteries. A prepared hierarchical porous polymer electrolyte film is used as a buffer layer material and is placed between an electrode material and a solid-state electrolyte to form favorable contact with a positive electrode material, an electrolyte material and metallithium, the interface impedance is effectively reduced, direct contact reaction between the solid-state electrolyte and the metal lithium can be reduced, and the all-solid-state battery has relatively good cycle stability.
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Description

technical field

[0001] The invention relates to a lithium germanium phosphate doped with metal aluminum and a lithium ion battery technology in which the material is combined with a gel polymer electrolyte PVDF-HFP. The invention uses aluminum-doped lithium germanium phosphate as a solid electrolyte and the polymer electrolyte prepared above as a buffer layer to construct a lithium all-solid or quasi-solid ion battery, which belongs to the technical field of solid batteries. Background technique

[0002] Entering the 21st century, human society is developing at an unprecedented speed. While enjoying many benefits of advanced civilization, human beings have to face energy and environmental crises such as the depletion of fossil fuel resources and the increasingly obvious global greenhouse effect. Man must completely change the pattern of energy consumption and vigorously develop renewable and clean energy. At the same time, high-efficiency energy storage devices—lithium-ion ...

Claims

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