Hydrothermal synthesis of Ni(OH)<sub>2</sub>/RGO nanocomposites with superior electrochemical performance

LI Qian; LU Chun-xiang; CHEN Cheng-meng; XIE Li-jing; YUAN Shu-xia

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Article Navigation > New Carbon Mater. > 2017 > 32(6): 527-534

LI Qian, LU Chun-xiang, CHEN Cheng-meng, XIE Li-jing, YUAN Shu-xia. Hydrothermal synthesis of Ni(OH)2/RGO nanocomposites with superior electrochemical performance. New Carbon Mater., 2017, 32(6): 527-534.

Citation:

LI Qian, LU Chun-xiang, CHEN Cheng-meng, XIE Li-jing, YUAN Shu-xia. Hydrothermal synthesis of Ni(OH)₂/RGO nanocomposites with superior electrochemical performance. New Carbon Mater., 2017, 32(6): 527-534.

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Hydrothermal synthesis of Ni(OH)₂/RGO nanocomposites with superior electrochemical performance

1.
Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
National Engineering Laboratory for Carbon Fiber Technology, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Funds: National Natural Science Foundation of China (51174144);Scientific Key Project of Shanxi Province (201103210392).

Received Date: 2017-10-19
Accepted Date: 2017-12-28
Rev Recd Date: 2017-12-05
Publish Date: 2017-12-28

Abstract

Abstract

Ni(OH)₂/reduced graphene oxide (RGO) nanocomposites for use as electrodes in electrochemical capacitors were prepared from GO and nickel nitrate by a one-step hydrothermal method. The content of RGO in the composites was controlled by changing the GO/nickel nitrate mass ratio. Results indicate that Ni(OH)₂ nanobelts are dispersed uniformly in the three-dimensional conducting network constructed by the RGO, which is favorable for their capacitive performance. The RGO content to achieve the best performance is 26.7 wt%. The best sample has a high specific capacity of 1 804 F/g at 1 A/g, a remarkable capacitance retention rate of 46% even at 25 A/g, and an excellent cycle life with 90.3% capacitance retention after 2 000 cycles at 2 A/g.
- Hydrothermal method,
- Ni(OH)₂,
- Graphene,
- Electrochemical performance

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References(19)

References

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