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Citation: WANG Hua-Qing, ZHOU Shang-Qi, CHEN Chang-Guo, YU Dan-Mei. Electrochemical Performance of ZnO Nanoparticles Modified Zinc Electrode[J]. Chinese Journal of Applied Chemistry, ;2005, 22(1): 99-102. shu

Electrochemical Performance of ZnO Nanoparticles Modified Zinc Electrode

1.
a College of Materials Science and Engineering, Chongqing University, Chongqing 400044;
2.
b College of Chemical Engineering, Chongqing University, Chongqing 400044

Corresponding author: WANG Hua-Qing,
Received Date: 18 February 2004
Available Online: 28 July 2004

The electrochemical performances of zinc electrodes were investigated as the functions of ZnO size and mass fraction of Zn to ZnO in 6.0 mol/L KOH solutions. The peak shapes and peak current in the CV curves were found differed for zinc electrodes with different compositions at a scan rate of 1 mV/s. The zinc electrode containing 50%(mass fraction) ZnO nanoparticles exhibited better electrochemical behavior due to better distribution of the electroactive species on the surface of the electrode, and improvement of the electrode structure in favor of the transfer of reaction particles and ionic charges compared with the zinc electrode containing common ZnO. The discharge capacities of the zinc electrode containing 50% ZnO nanoparticles were 220 mA·h/g and 198 mA·h/g at 25th and 30th charge-discharge cycles, respectively.
- ZnO nanoparticle,
- zinc electrode,
- cyclic reversibility,
- discharge capacity
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