Hard carbon composite for alkali metal-ion batteries
A method is provided for fabricating a graphene-doped, carbohydrate-derived hard carbon (G-HC) composite material for alkali metal-ion batteries. The method provides graphene oxide (GO) dispersed in an aqueous solution. A carbohydrate is dissolved into the aqueous solution and subsequently the water is removed to create a precipitate. In one aspect, the carbohydrate is sucrose. The precipitate is dehydrated and exposed to a thermal treatment of less than 1200 degrees C. to carbonize the carbohydrate. The result is the formation of a graphene-doped, carbohydrate-derived hard carbon (G-HC) composite. Typically, the G-HC composite is made up of graphene in the range of 0.1 and 20% by weight (wt %), and HC in the range of 80 to 99.9 wt %. The G-HC composite has a specific surface area of less than 10 square meters per gram (m2/g). A G-HC composite suitable for use in alkali metal-ion batteries electrodes is also provided.
- Research Organization:
- Oregon State Univ., Corvallis, OR (United States); Sharp Laboratories of America, Inc., Camas, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AR0000297
- Assignee:
- Oregon State University (Corvallis, OR); Sharp Laboratories of America, Inc. (Camas, WA)
- Patent Number(s):
- 9,735,444
- Application Number:
- 14/731,667
- OSTI ID:
- 1532009
- Country of Publication:
- United States
- Language:
- English
Similar Records
Prussian blue analogue electrodes without zeolitic water content
Anode for sodium-ion and potassium-ion batteries