Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (1): 99-104.doi: 10.3866/PKU.WHXB201411053

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Fabrication of Nickel-Based Composite Film Electrode for Supercapacitors by a New Method of Anodization/GCD

YI Chao, XIONG Xin-Bo, ZOU Zhi-Biao, LI Jun-Jie, HUANG Tuo, LI Bin, MA Jun, ZENG Xie-Rong   

  1. Shenzhen Key Laboratory of Special Functional Materials, Department of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China
  • Received:2014-09-29 Revised:2014-11-04 Published:2014-12-25
  • Contact: XIONG Xin-Bo E-mail:xxbszdx@szu.edu.cn
  • Supported by:

    The project was supported by the Students' Innovation Training Program, China (0000232321), Teaching ReformProjectof Shenzhen University (JG2012084), and National Natural Science Foundation of China (51172147, 50702034).

Abstract:

Anickel-based composite filmwas fabricated on Ni foil, by two-electrode anodization and galvanostatic charge-discharge (GCD) treatment. The surface morphology, states of chemical species, and crystal structure of the filmwere characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). The electrochemical performance was tested using an electrochemical workstation and battery program-control test system. The test results indicated that the filmpossessed a nanoflower-like morphology, and consisted of NiO, α-Ni(OH)2 and β-Ni(OH)2. The NiO-α-Ni(OH)2-β-Ni(OH)2 compounds exhibiting a high specific capacitance, superior rate capability, and good cyclability (1509 F·g-1 at 6.7A·g-1, 1120 F·g-1 at 66.7 A·g-1, after 2000 cycles, the capacitance of the filmremained unchanged).

Key words: Supercapacitor, Anodization, Galvanostatic charge-discharge, Nickel, Film

MSC2000: 

  • O646