期刊
POWDER TECHNOLOGY
卷 253, 期 -, 页码 580-583出版社
ELSEVIER
DOI: 10.1016/j.powtec.2013.12.008
关键词
Hydrothermal; Graphene; Lithium ion capacitors; Porous
资金
- National Natural Science Foundation of China [51372278]
The porous reduced graphene is prepared via an ethylene glycol assisted-hydrothermal method which is green, simple and nontoxic. The ethylene glycol assisted-hydrothermal reduced graphene (EG-RGO) delivers superior power density compared to those prepared without the assistant of ethylene glycol when used as cathode materials for the lithium ion capacitors. The EG-RGO electrode shows a high capacity of 172 mAh g(-1) at 0.1 A g(-1) and without capacity loss after 3000 cycles. Furthermore, the power density of the electrodes reaches 53.5 kW kg(-1) at the current density of 20 A g(-1) with an energy density of 240 Wh kg(-1). The high electrochemical performance of EG-RGO is attributed to the high electronic conductivity of the graphene. (C) 2013 Elsevier B.V. All rights reserved.
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