Manufacturing method for recycled carbon material
AssigneePrime Planet Energy & Solutions, Inc.
InventorKento HOSOE
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Abstract
A method of easily obtaining a recycled carbon material by removing more Li from a carbon-based negative electrode active material containing Li is provided. A manufacturing method for a recycled carbon material according to the present disclosure includes: a first thermal process step of thermally processing a carbon-based negative electrode active material containing Li together with ethylene carbonate at a temperature less than a boiling point of ethylene carbonate to obtain a thermally processed object containing lithium ethylene dicarbonate; and a second thermal process step of thermally processing the thermally processed object at a temperature more than or equal to the boiling point of ethylene carbonate to convert lithium ethylene dicarbonate into lithium carbonate.
Claims10
A manufacturing method for a recycled carbon material, comprising:
- a first thermal process step of thermally processing a carbon-based negative electrode active material containing Li together with ethylene carbonate at a temperature less than a boiling point of ethylene carbonate to obtain a thermally processed object containing lithium ethylene dicarbonate;
- and
- a second thermal process step of thermally processing the thermally processed object at a temperature more than or equal to the boiling point of ethylene carbonate to convert lithium ethylene dicarbonate into lithium carbonate.
Dependencies are inferred from the claim text.