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Composite inorganic solid electrolyte membrane and lithium metal battery thereof

A solid electrolyte membrane, solid electrolyte technology, applied in the direction of electrolyte, secondary battery, secondary battery repair/maintenance, etc., can solve problems such as hindering the development and practical application of lithium metal battery system, improve cycle stability, inhibit battery Short-circuit and penetration-inhibiting effects

Active Publication Date: 2020-12-22
CONTEMPORARY AMPEREX TECH CO
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The short-circuit problem seriously hinders the development and practical application of lithium metal battery systems with high energy density

Method used

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  • Composite inorganic solid electrolyte membrane and lithium metal battery thereof
  • Composite inorganic solid electrolyte membrane and lithium metal battery thereof
  • Composite inorganic solid electrolyte membrane and lithium metal battery thereof

Examples

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preparation example Construction

[0033] In the preparation process of the positive pole piece, the positive organic solvent is selected from ether organic solvents, hydrocarbon organic solvents, ester organic solvents, nitrile organic solvents, amide organic solvents, alcohol organic solvents, and halogenated organic solvents. at least one.

[0034] Specifically, the ether organic solvent is selected from at least one of ether, tetrahydrofuran, and ethylene glycol dimethyl ether, and the hydrocarbon organic solvent is selected from n-pentane, n-hexane, cyclohexane, toluene, xylene, and trimethylbenzene. At least one of ester organic solvents selected from at least one of ethyl acetate, methyl formate, dimethyl phthalate, nitrile organic solvents selected from acetonitrile, amides organic solvents selected from N-methyl Pyrrolidone (NMP) and / or N,N-dimethylformamide (DMF), the alcoholic organic solvent is selected from ethanol; the halogenated organic solvent is selected from methylene chloride and / or 1,2-dich...

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Abstract

The invention belongs to the field of solid-state lithium metal batteries, and particularly relates to a composite inorganic solid electrolyte membrane and a lithium metal battery thereof, which are characterized in that a proper composite inorganic solid-state electrolyte membrane is designed and developed by adopting inorganic solid-state electrolyte and added salt, by adopting the characteristics of melting at high temperature and low-temperature solidification of the added salt, low-melting-point added salt is melted to allow the molten low-melting-point added salt to flow into pores of the composite inorganic solid electrolyte membrane under a certain pressure, after cooling, the added salt in the pores is solidified to fill the pores in order to reduce the porosity of the composite inorganic solid electrolyte membrane. Therefore, permeation of negative lithium metal into the electrolyte membrane in the assembling and circulating processes of the solid-state lithium metal batteryis inhibited, the purpose of inhibiting short circuit of the battery is achieved, and the circulating stability of the solid-state lithium metal battery is improved.

Description

technical field [0001] The invention belongs to the technical field of lithium metal batteries, and more specifically relates to a composite inorganic solid electrolyte membrane and a lithium metal battery thereof. Background technique [0002] With the continuous improvement of people's requirements for the energy density of power energy, traditional lithium-ion batteries have been difficult to meet the increasing demand for specific capacity. Therefore, solid-state lithium metal batteries with high specific capacity advantages have become a research hotspot. The specific capacity of metal lithium is 3860mAh / g, the electrochemical potential is -3.04V (vs standard hydrogen electrode), and the weight energy density of lithium metal batteries such as lithium-sulfur batteries and lithium-air batteries using lithium metal as the negative electrode can reach 400Wh / kg or more. [0003] However, in order to use lithium metal as the negative electrode, it is necessary to overcome ...

Claims

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Application Information

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IPC IPC(8): H01M10/0562H01M10/0525H01M10/42
CPCH01M10/0562H01M10/0525H01M10/4235H01M2300/0091Y02E60/10
Inventor 刘成勇胡波兵付佳玮郭永胜程萌李谦梁成都
Owner CONTEMPORARY AMPEREX TECH CO
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