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Inorganic/organic composite thin film solid-state electrolyte for lithium metal battery and preparation method of inorganic/organic composite thin film solid-state electrolyte

A lithium metal battery and solid-state electrolyte technology, applied in the direction of lithium batteries, non-aqueous electrolyte batteries, secondary batteries, etc., can solve problems such as limitations, achieve rapid transportation and transfer, improve cycle stability and safety, and inhibit The effect of adverse side effects

Active Publication Date: 2017-11-24
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional single-component organic or inorganic solid-state electrolytes are still extremely limited in fundamentally solving the problem of improving the energy density and safety of lithium metal batteries.

Method used

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  • Inorganic/organic composite thin film solid-state electrolyte for lithium metal battery and preparation method of inorganic/organic composite thin film solid-state electrolyte
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Embodiment 1

[0031] This embodiment provides an inorganic / organic composite thin-film solid electrolyte for lithium metal batteries, including a ceramic nanowire network framework, an inorganic electrolyte, and a polymer electrolyte. The inorganic electrolyte is compounded on the ceramic nanowire network framework by magnetron sputtering. , The polymer electrolyte is compounded in situ on the inorganic electrolyte and ceramic nanowire network framework.

[0032] Among them, the material of the ceramic nanowire network skeleton is Al 2 O 3 And in the solid electrolyte, the mass fraction of the ceramic nanowire network skeleton is 12%. The polymer electrolyte is polyoxyethylene, and in the solid electrolyte, the mass fraction of the polymer electrolyte is 76%, and the polymer electrolyte is uniformly compounded on the inorganic electrolyte and the ceramic nanowire network skeleton. The inorganic electrolyte is lithium lanthanum zirconium oxide (LLZO), and the inorganic electrolyte is uniformly ...

Embodiment 2

[0038] This embodiment provides an inorganic / organic composite thin-film solid electrolyte for lithium metal batteries, including a ceramic nanowire network framework, an inorganic electrolyte, and a polymer electrolyte. The inorganic electrolyte is compounded on the ceramic nanowire network framework by magnetron sputtering. , The polymer electrolyte is compounded in situ on the inorganic electrolyte and ceramic nanowire network framework.

[0039] The material of the ceramic nanowire network skeleton is MgO, and in the solid electrolyte, the mass fraction of the ceramic nanowire network skeleton is 11%. The polymer electrolyte is polyoxyethylene, and in the solid electrolyte, the mass fraction of the polymer electrolyte is 75%, and the polymer electrolyte is uniformly compounded on the inorganic electrolyte and the ceramic nanowire network skeleton. The inorganic electrolyte is lithium lanthanum zirconium oxide (LLZO), and the inorganic electrolyte is evenly distributed on the ...

Embodiment 3

[0045] This embodiment provides an inorganic / organic composite thin-film solid electrolyte for lithium metal batteries, including a ceramic nanowire network framework, an inorganic electrolyte, and a polymer electrolyte. The inorganic electrolyte is compounded on the ceramic nanowire network framework by magnetron sputtering. , The polymer electrolyte is compounded in situ on the inorganic electrolyte and ceramic nanowire network framework.

[0046] Among them, the material of the ceramic nanowire network skeleton is LiAlO 2 And in the solid electrolyte, the mass fraction of the ceramic nanowire network skeleton is 13%. The polymer electrolyte is polyoxyethylene, and in the solid electrolyte, the mass fraction of the polymer electrolyte is 74%, and the polymer electrolyte is uniformly compounded on the inorganic electrolyte and the ceramic nanowire network skeleton. The inorganic electrolyte is lithium lanthanum titanium oxide (LLTO), and the inorganic electrolyte is evenly distr...

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Abstract

The invention belongs to the technical field of a lithium metal battery, and particularly relates to an inorganic / organic composite thin film solid-state electrolyte for the lithium metal battery. The inorganic / organic composite thin film solid-state electrolyte comprises a ceramic nanowire network framework, an inorganic electrolyte and a polymer electrolyte, wherein the inorganic electrolyte is combined with the ceramic nanowire network framework by a magnetron sputtering method, and the polymer electrolyte is combined with the inorganic electrolyte and the ceramic nanowire network framework in an in-situ way. Compared with the prior art, the ceramic nanowire network framework with a unique structure is used, and the multi-layer network-structure inorganic / organic composite thin film solid-state electrolyte is prepared on the basis; and moreover, by optimizing and improving the interface compatibility and stability of the inorganic / organic composite thin film solid-state electrolyte and a metal lithium electrode, rapid ion transmission is achieved, the growth of lithium dendrites is suppressed, the penetrating of the lithium dendrites is prevented, and the cycle stability and the safety of the lithium metal battery are improved.

Description

Technical field [0001] The invention belongs to the technical field of lithium metal batteries, and particularly relates to an inorganic / organic composite thin film solid electrolyte for lithium metal batteries and a preparation method thereof. Background technique [0002] At present, environmental problems such as air pollution, global warming, and oil depletion are becoming increasingly severe. The development of new energy vehicles has become an urgent need to solve environmental problems. The research and development of power batteries is the key to the industrialization of electric vehicles, and is of great significance to the development of new energy and energy-saving electric vehicles. Lithium-ion batteries have become the battery system with the best overall performance due to its advantages such as high voltage, small size, light weight, high specific energy, no memory effect, no pollution, small self-discharge, and long service life. However, the specific energy of c...

Claims

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Application Information

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IPC IPC(8): H01M10/056H01M10/052
CPCH01M10/052H01M10/056Y02E60/10
Inventor 贺艳兵雷丹妮赵恒倪彬吕伟李宝华杨全红魏善奎康飞宇
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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