In situ formation of Ni(OH)2 nanoparticle on nitrogen-doped reduced graphene oxide nanosheet for high-performance supercapacitor electrode material
In situ formation of Ni(OH)2 nanoparticle on nitrogen-doped reduced graphene oxide nanosheet for high-performance supercapacitor electrode material
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DOI：
10.1016/j.apsusc.2014.08.127
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发表时间：
2014-10-30
影响因子：
6.7
通讯作者：
Tan, Shaozao
中科院分区：
文献类型：
--
作者：
Liu, Huidi;Zhang, Jinglin;Tan, Shaozao
采用简单的一步水热法制备了一种由氢氧化镍和氮掺杂的还原氧化石墨烯（N-rGO/Ni（OH）（2））组成的新型超级电容器电极材料，其中氧化石墨烯（GO）的还原、氮掺杂和Ni（OH）（2）的原位形成同时实现。结果表明，NrGO/Ni（OH）（2）的电化学活性在氮掺杂后得到了提高。此外，由于N-rGO与Ni（OH）（2）之间的正协同效应，合成的N-rGO/Ni（OH）（2）复合材料显示出上级电化学性能，包括高电容、优异的倍率性能和良好的循环寿命。因此，在这项工作中的简易制备方法将被认为是一种新的方法，以获得金属氧化物或氢氧化物/N-rGO材料，可用作先进的电极材料，在高性能的超级电容器。(C)2014爱思唯尔有限公司版权所有。
A new hybrid material consisting of nickel hydroxide and nitrogen-doped reduced graphene oxide (N-rGO/Ni(OH)(2)) for supercapacitor electrode material is prepared via an easy one-step hydrothermal method, where the reduction and nitrogen doping of graphene oxide (GO) and the in situ formation of Ni(OH)(2) are achieved simultaneously. The results show the improved electrochemical activity of NrGO/Ni(OH)(2) upon nitrogen doping. Moreover, thanks to the positive synergetic effect between N-rGO and Ni(OH)(2), the synthesized N-rGO/Ni(OH)(2) composite shows superior electrochemical performance, including high capacitance, excellent rate capability and good cycle life. Hence, the facile preparation approach in this work will be considered as a new way to obtain metal oxide or hydroxide/N-rGO material which can be used as advanced electrode material in high-performance supercapacitors. (C) 2014 Elsevier B.V. All rights reserved.