Solid-state electrolyte, lithium battery cell and lithium battery

A technology of solid electrolyte and lithium battery, which is applied in the direction of non-aqueous electrolyte storage battery, electrolyte storage battery manufacturing, lithium storage battery, etc. It can solve the problems of poor performance of solid electrolyte and achieve the effects of compact packaging, battery protection and simplified packaging structure

Inactive Publication Date: 2019-06-25
成都大超科技有限公司
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Problems solved by technology

[0003] In order to overcome the problem of poor performance of the existing solid electroly

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  • Solid-state electrolyte, lithium battery cell and lithium battery
  • Solid-state electrolyte, lithium battery cell and lithium battery
  • Solid-state electrolyte, lithium battery cell and lithium battery

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[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0029] The first embodiment of the present invention provides a solid electrolyte. The solid electrolyte includes an anti-perovskite solid electrolyte composed of super-strong base clusters and super-strong halogen clusters. The super-base clusters mainly refer to lithium metal clusters with ionization potentials less than that of metal Li, which mainly include Li 3 Se + , Li 3 S + Or Li 3 O + One or more of them; the super-strong halogen clusters mainly include ion clusters with high electron affinity of halogen elements, which mainly include BH 4 - , AlH 4 - , BF 4 - , FeH 4 - , ...

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Abstract

The invention relates to the field of lithium batteries, in particular to a solid-state electrolyte, a lithium battery cell and a lithium battery. The solid-state electrolyte is an anti-perovskite solid-state electrolyte, and includes one or more super base clusters selected from Li3Se+, Li3S+ and Li3O+ and one or more super halogen clusters selected from BH4-, AlH4-, BF4-, FeH4-, CoH4- and NiH4-.The solid-state electrolyte exhibits a nanowire morphology. Therefore, the solid-state electrolyte has an electrochemical window above 5V and excellent interfacial adhesion, wettability and lithium ion conductivity, and the molecular skeleton of the solid-state electrolyte has good tolerance. Based on the structural characteristics of the solid-state electrolyte, the solid-state electrolyte has the advantages of high shear modulus, high Young's modulus and capability of inhibiting the growth of lithium dendrites.

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, therefore, sulfide solid electrolyte materials have always been a research hotspot. However, the sulfide solid electrolyte is very sensitive to water and air, and the solid electrolyte material in the prior art has a large interface resistance after contacting the positive and negative electrode materials, resulting in a short cycle life. 【Content of invention】 [0003] In order to overcome the problem of poor performance of the existing solid electrolyte, ...

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Application Information

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IPC IPC(8): H01M10/0562H01M10/058H01M10/052B82Y30/00
CPCY02E60/10Y02P70/50
Inventor 张晓琨朱焱麟
Owner 成都大超科技有限公司
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