期刊
ADVANCED MATERIALS
卷 27, 期 12, 页码 2042-2048出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201405370
关键词
3D graphene; anodes; nitrogen-doping; sodium ion batteries
类别
资金
- AFOSR [FA9550-12-1-0037, FA-9550-12-1-0069]
- NSF [NSF-CMMI-1000768, NSF-CMMI-1400274, NSF-DMR-1106160]
- Auto CRC
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1106160] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1400274] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1363123] Funding Source: National Science Foundation
A 3D N-doped graphene foam with a 6.8 at% nitrogen content is prepared by annealing a freeze-dried graphene oxide foam in ammonia. It is used as an anode in sodium ion batteries to deliver a high initial reversible capacity of 852.6 mA h g -1 at 1 C between 0.02 and 3 V with a long-term retention of 69.7% after 150 cycles.
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