Composite solid electrolyte membrane with multilayer structure, preparation method thereof and solid-state battery

A technology of solid electrolyte membrane and solid electrolyte, applied in solid electrolyte, non-aqueous electrolyte, battery, etc., can solve the problems of poor mechanical strength, etc., and achieve the effect of improving rate performance, good performance, and convenient control

Active Publication Date: 2019-12-17
郑州宇通集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a multilayer structure composite solid electrolyte m...

Method used

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  • Composite solid electrolyte membrane with multilayer structure, preparation method thereof and solid-state battery
  • Composite solid electrolyte membrane with multilayer structure, preparation method thereof and solid-state battery
  • Composite solid electrolyte membrane with multilayer structure, preparation method thereof and solid-state battery

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Embodiment 1

[0042] The multi-layer structure composite solid electrolyte membrane of this embodiment, the structure schematic diagram is as follows figure 1 As shown, it includes a supporting framework layer 3, the positive electrode side surface of the supporting framework layer is compounded with an inorganic electrolyte layer 4, the negative electrode side surface is compounded with a polymer electrolyte layer 2, the supporting framework layer includes a porous supporting framework, and the pore structure of the porous supporting framework is filled There is an electrolyte material connecting the inorganic electrolyte layer and the polymer electrolyte layer, and the inorganic electrolyte layer 4, the supporting skeleton layer 3, and the polymer electrolyte layer 2 form a composite solid electrolyte membrane 1 with a multilayer structure.

[0043] The inorganic electrolyte layer is composed of an inorganic solid electrolyte and a polymer electrolyte, and the polymer electrolyte simultane...

Embodiment 2

[0053] The multi-layer structure composite solid electrolyte membrane of this embodiment, the structure schematic diagram is as follows figure 2 As shown, it includes a supporting framework layer 3, the positive electrode side surface of the supporting framework layer is compounded with an inorganic electrolyte layer 4, the negative electrode side surface is compounded with a polymer electrolyte layer 2, the supporting framework layer includes a porous supporting framework, and the pore structure of the porous supporting framework is filled There is an electrolyte material connecting the inorganic electrolyte layer and the polymer electrolyte layer, and the inorganic electrolyte layer 4, the supporting skeleton layer 3, and the polymer electrolyte layer 2 form a composite solid electrolyte membrane 1 with a multilayer structure.

[0054] The inorganic electrolyte layer is composed of an inorganic solid electrolyte and a polymer electrolyte, and the polymer electrolyte simultan...

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Abstract

The invention relates to a composite solid electrolyte membrane with a multilayer structure, a preparation method thereof and a solid-state battery. The composite solid electrolyte membrane comprisesan inorganic electrolyte layer and a polymer electrolyte layer, and further comprises a support framework layer, wherein the inorganic electrolyte layer is compounded on the positive electrode side surface of the support framework layer, the polymer electrolyte layer is compounded on the negative electrode side surface of the support framework layer, the support framework layer comprises a poroussupport framework, and the pore structure of the porous support framework is filled with an electrolyte material. According to the composite solid electrolyte membrane, the mechanical strength of theelectrolyte membrane is enhanced while positive and negative electrode electrolyte functional layers are provided, and the rate performance, the cycle performance and the safety of the battery are facilitated to be improved.

Description

technical field [0001] The invention belongs to the field of electrolyte membranes, and in particular relates to a composite solid electrolyte membrane with a multilayer structure, a preparation method thereof, and a solid state battery. Background technique [0002] The development of new energy vehicles is of great significance for alleviating environmental pollution and energy crisis. The power battery as an energy source plays a decisive role in the performance of new energy vehicles. Lithium-ion batteries have become the first choice for new energy vehicle batteries due to their advantages such as high energy density, high power density, long life, and no memory effect. [0003] The rapid development of new energy vehicles has put forward higher requirements for the safety and energy density of power battery systems. Currently, liquid lithium-ion batteries used in mainstream power batteries have certain safety hazards because they contain liquid organic electrolytes, an...

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0565H01M10/0525H01M2300/0082H01M2220/20Y02E60/10
Inventor 李云明周时国曹瑞中廖华平尹利超彭能岭
Owner 郑州宇通集团有限公司
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