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US 12,215,030 B2Granted
Carbonaceous material, method for producing same, electrode active material for electrochemical device, electrode for electrochemical device, and electrochemical device
AssigneeKuraray Co., Ltd.
InventorsHiroyuki Nishinami, Yumika Nishita, Shushi Nishimura
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Abstract
The present invention relates to a carbonaceous material having a BET specific surface area of 1550 to 2500 m2/g and a value of an oxygen content/hydrogen content per specific surface area of 1.00 to 2.04 mg/m2.
Claims20
A carbonaceous material having a BET specific surface area of 1550 to 2500 m2/g and a value of an oxygen content/hydrogen content per specific surface area of 1.00 to 2.04 mg/m2.
A method for producing a carbonaceous material, the method comprising:
- heating a raw carbonaceous material to a first temperature of 330° C. or higher under a first oxidizing gas atmosphere;
- washing the raw carbonaceous material with a washing liquid comprising an acid;
- executing a deacidification process by heating the raw carbonaceous material to a second temperature of 330° C. or higher under a second oxidizing gas atmosphere;
- and
- lowering a temperature of the raw carbonaceous material under a non-oxidizing gas atmosphere after the executing the deacidification process,
- wherein the carbonaceous material has a value of an oxygen content/hydrogen content per specific surface area of 1.00 to 2.04 mg/m2.
3 more elements
Dependencies are inferred from the claim text.