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US 11,600,810 B2Granted
Ultrathin lithium composite and preparation method and use thereof
AssigneeInstitute of Chemistry, Chinese Academy of Sciences
InventorsYuguo Guo, Shuhua Wang, Wei Dong, Yaxia Yin, Chunru Wang
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Abstract
A method for preparing an ultrathin Li complex includes the steps of preparing an organic transition layer on a substrate in advance, and contacting the substrate having transition layer with molten Li in argon atmosphere with H2O≤0.1 ppm and O2≤0.1 ppm. The molten Li spreads rapidly on the surface of the substrate to form a lithium thin layer. The ultrathin Li layer stores lithium on the current collector beforehand. It can be used as a safe lithium anode to inhibit dendrites.
Claims2
A method for forming a lithium layer, comprising:
- coating a mixture solution of polyvinylidene fluoride and polyethyleneimine on a piece of planar copper substrate to form an organic transition layer on the substrate;
- and
- contacting the piece of planar copper substrate having the organic transition layer with a molten lithium in an argon atmosphere having H2O≤0.1 ppm and O2≤0.1 ppm for 10-120 s at a temperature of the molten lithium of 180-300° C., thereby spreading molten lithium on the substrate to form the lithium layer having a thickness of 5-50 μm, and
- peeling the lithium layer off the piece of planar copper substrate.
1 more element
Dependencies are inferred from the claim text.