Surface modified redox compounds and composite electrode...

Details Surface modified redox compounds and composite electrode... Surface modified redox compounds and composite electrode...

H - Electricity

01

M

H01M 4/60 (2006.01) H01M 4/04 (2006.01)

Patent

CA 2506104

The invention relates to surface modified carbon-coated redox LiFePO4, reversible to lithium ion, and to battery cathode coating obtained from. In view to improve properties of carbon-coated lithium iron phosphate, inventors, after intensive R&D activities, discovered that its usage value could be efficiently improved, by taking advantage of carbon functionalities (such as but not limited to -COOH, -OH, -COR) present on the carbon surface from the C-LiFePO4 synthesis or post- treatment to induce carbon surface modification by grafting of various chemical functionalities on carbon surface (designed as "SMC-LiFePO4"), such as a better cathode powder wettability and a better adhesion between cathode particles and the binder.

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