Journal of Inorganic Materials ›› 2013, Vol. 28 ›› Issue (12): 1301-1306.DOI: 10.3724/SP.J.1077.2013.13165

• Research Paper • Previous Articles     Next Articles

Preparation and Electrochemical Behavior in H2SO4 Electrolyte of Nano-Pb(PbO)/Activated Carbon

GAO Yun-Fang, SONG Yun-Long, REN Dong-Lei, WANG Yan-Ping   

  1. (College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China)
  • Received:2013-03-25 Revised:2013-05-19 Published:2013-12-20 Online:2013-11-15

Abstract: Nano-Pb(PbO)/activated carbon (nano-Pb(PbO)/AC) was prepared by the processes of adsorption of Pb2+, deposition of PbO and further reductive decomposition in the pores of activated carbon. The composite was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The results showed that Pb and PbO nano-crystals were dispersed uniformly on the surface of activated carbon particles. The electrochemical measurements in H2SO4 aqueous solution showed that nano-Pb(PbO)/AC possessed high over-potential of hydrogen evolution, high electrical conductivity, and could provid a certain degree of oxidation-reduction current. Moreover, there was less non-faradic capacitance loss. Ultra-battery was prepared by adding 5wt% of Nano-Pb(PbO)/AC to the negative paste. Initially, the battery was discharged to 60%SOC and then subjected to the test of cycling performance at high rate. The cycle life of the ultra-battery was 4 to 5 times higher than that of traditional lead-acid battery.

Key words: activated carbon, nano-Pb, composite material, hydrogen evolution, ultra-batteries

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