Preparation and Electrochemical Behavior of PbO/GN/AC

Authors

Yun-fang GAO, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;Follow
Yan-ping WANG, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;
Qiu-shi YAO, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;
Fu-hua WANG, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;
Dong-lei REN, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;
Xin XU, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;

Corresponding Author

Yun-fang GAO(gaoyf@zjut.edu.cn)

Abstract

The lead oxide/graphene/activated carbon (PbO/GN/AC) composite materials were prepared by impregnating commercial activated carbon and graphene in saturated lead nitrate solution followed by calcination. The structures and morphologies of the composite were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results show that PbO crystals (about 200 nm) were dispersed uniformly on the surface of activated carbon and graphene. Electrochemical data indicate that the composite exhibited good electrochemical performances. The PbO/GN/AC composite possessed the higher over-potential of hydrogen evolution and the high specific capacitance of 312.6 F·g^-1, while the internal resistance was 1.56 Ω. The composite electrode also displayed excellent cycling stability, retaining over 92.6% of its initial charge after 6000 cycles. The ultra-battery with 5% (by mass) PbO/GN/AC being added to the negative paste had a cycle life approximately 3.5 times longer than conventional lead-acid batteries.

Graphical Abstract

Keywords

activated carbon, PbO, graphene, hydrogen evolution, supercapacitor

DOI Link

https://doi.org/10.13208/j.electrochem.131227

Publication Date

2014-10-28

Online Available Date

2014-04-27

Revised Date

2014-04-22

Received Date

2013-12-27

Recommended Citation

Yun-fang GAO, Yan-ping WANG, Qiu-shi YAO, Fu-hua WANG, Dong-lei REN, Xin XU. Preparation and Electrochemical Behavior of PbO/GN/AC[J]. Journal of Electrochemistry, 2014 , 20(5): 486-492.
DOI: 10.13208/j.electrochem.131227
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss5/13