Porous graphene as cathode material for lithium ion capacitor with high electrochemical performance
Porous graphene as cathode material for lithium ion capacitor with high electrochemical performance
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多孔石墨烯作为锂离子电容器正极材料具有高电化学性能
DOI：
10.1016/j.powtec.2013.12.008
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发表时间：
2014-02-01
影响因子：
5.2
通讯作者：
Pan, Chunyue
中科院分区：
文献类型：
--
作者：
Tu, Feiyue;Liu, Suqin;Pan, Chunyue
采用乙二醇辅助水热法制备多孔还原石墨烯，绿色、简单、无毒。当用作锂离子电容器的阴极材料时，乙二醇辅助水热还原石墨烯（EG-RGO）比没有乙二醇辅助制备的石墨烯具有更高的功率密度。 EG-RGO电极在0.1 A g(-1)电流下表现出172 mAh g(-1)的高容量，并且在3000次循环后没有容量损失。此外，在电流密度为20 A g(-1)、能量密度为240 Wh kg(-1)时，电极的功率密度达到53.5 kW kg(-1)。 EG-RGO的高电化学性能归因于石墨烯的高电子电导率。 (C) 2013 Elsevier B.V. 保留所有权利。
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.