Solid electrolyte and lithium battery cell with same, and lithium battery

A solid electrolyte, lithium battery technology, applied in non-aqueous electrolyte battery, electrolyte battery manufacturing, lithium battery and other directions, can solve the problem of poor performance of solid electrolyte, achieve excellent wettability and interface adhesion, excellent viscosity and flexibility , the effect of easy migration
CN109935897AActive Publication Date: 2019-06-25成都大超科技有限公司
10 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
成都大超科技有限公司
Publication Date
2019-06-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the field of lithium batteries, in particular to a solid electrolyte and a lithium battery cell with the solid electrolyte, and a lithium battery. The solid electrolyte comprises Li3Sn2(PO4)3 and / or Li3Ge2(PO4)3. The solid electrolyte has a stable structure, has an electrochemical window of above 5V, has better adhesion and flexibility, and has better interface wettabilityand interface adhesion when contacting an electrode layer. The Se and Ge atoms in the structure of the solid electrolyte are weakly bound to Li+, so that the Li ions are easier to migrate, and betterconductivity can be obtained. Furthermore, based on the structural characteristics, the solid electrolyte has the advantages of high shear modulus, high Young's modulus and capability of inhibiting the growth of lithium dendrites.
Need to check novelty before this filing date? Find Prior Art

Description

【Technical field】

[0001] The invention relates to the field of lithium batteries, in particular to a solid electrolyte, a lithium battery cell, and a lithium battery. 【Background technique】

[0002] Compared with traditional liquid electrolytes, all-solid electrolytes have the advantages of high mechanical strength and good safety. However, except for sulfide, the existing solid-state electrolyte systems have low lithium ion conductivity, and generally the ion conductivity at room temperature is less than 10. -3 S / cm, and the sulfide solid electrolyte is very sensitive to water and air, and all the reported solid electrolyte materials have a large interface resistance after contacting the positive and negative electrode materials, resulting in a short cycle life.

[0003] However, the inorganic powder or film material used in general solid electrolyte materials is polycrystalline material, which has low lithium ion conductivity, low working voltage, and poor interface wetta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More