Carbon-deposited alkali metal oxyanion electrode material and process for preparing same
AssigneeClariant (Canada) Inc.
InventorsGuoxian LIANG, Jasmin DUFOUR, Michael HOLZAPFEL, Christophe MICHOT
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Abstract
The present invention relates to a process for the synthesis of a carbon-deposited alkali metal oxyanion cathode material comprising particles, wherein said particles carry, on at least a portion of the particle surface, carbon deposited by pyrolysis, said process comprising a dry high-energy milling step performed on precursors of said carbon-deposited alkali metal oxyanion prior to a solid-state thermal reaction.
Claims21
1-45. (canceled)
A process for the synthesis of phosphosilicate cathode material particles having a deposit of carbon on at least a portion of the surface thereof, said phosphosilicate material comprising lithium and Fe, said Fe being doped with a 4+ valence state metal M′, said process comprising:
- a first dry high-energy milling step performed on precursors of said cathode material;
- a first solid-state thermal reaction;
- a second dry high-energy milling step;
- and
- a second solid-state thermal reaction.
Dependencies are inferred from the claim text.