Chemical Research in Chinese Universities ›› 2021, Vol. 37 ›› Issue (3): 772-777.doi: 10.1007/s40242-020-0333-6

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Hydrothermal Synthesis of NiCo-layered Double Hydroxide Nanosheets Decorated on Biomass Carbon Skeleton for High Performance Supercapacitor

YANG Fan1, CHU Jia1,2, CHENG Yaping1, GONG Jiafang1, WANG Xiaoqin1, XIONG Shanxin1,2   

  1. 1. College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, P. R. China;
    2. Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Nature Resources, Xi'an 710054, P. R. China
  • Received:2020-10-20 Revised:2020-11-19 Online:2021-06-01 Published:2021-05-31
  • Contact: CHU Jia, XIONG Shanxin E-mail:chujia@xust.edu.cn;xiongxs@xust.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No.51503169) and the Project of Excellent Youth Scientific Research Foundation of Xi'an University of Science and Technology, China(No.2019YQ2-10).

Abstract: Afacile hydrothermal strategy is adopted to synthesize the composite of NiCo-layered double hydroxide(NiCo-LDH) with biomass carbon as substrate for supercapacitor electrodes. The prepared NiCo@BC was characterized by means of X-ray diffraction(XRD), scanning electronic microscopy(SEM), Fourier transform infrared spectroscopy(FTIR) and Raman spectroscopy, and electrochemical tests. The SEM images demonstrated that numerous NiCo-LDH nanosheets directly grew on the surface of biomass carbon uniformly. Electrochemical tests indicated that the NiCo@BC electrode exhibited good capacitive behavior with a specific capacitance of 606.4 F/g at the current density of 0.5 A/g. In addition, the composite electrode showed excellent cyclic stability of 87.1% even after 1000 cycles. These results manifest that NiCo@BC nanocomposite is a promising candidate for the electrode material for future supercapacitor practical applications.

Key words: NiCo-layered double hydroxide, Biomass carbon, Hydrothermal, Supercapacitor