标题：Chemical synthesis of PbO2particles with multiple morphologies and phases and their electrochemical performance as the positive active material
作者：Fan, Na ;Sun, Changhui ;Kong, Delong ;Qian, Yitai
作者机构：[Fan, Na ;Sun, Changhui ;Qian, Yitai ] Hefei National Laboratory for Physical Science at Microscale, Department of Chemistry, University of Science an 更多
来源：Journal of Power Sources
摘要：In order to explore how to improve the electrochemical performance of the lead-acid battery positive active material, PbO2particles with multiple morphologies and phases including urchin-like and ball-like β-PbO2particles with size of 0.5-1 μm, flower-like α-PbO2particles with size of 1-2 μm are chemically synthesized. These samples are composed of different smaller nanoparticles. The electrode made with urchin-like β-PbO2and flower-like α-PbO2in the ratio of 1:1 can deliver a discharge capacity of 183 mA h g-1at 0.1 C after 100 cycles, and subsequent rate performance test shows that a discharge capacity of 97.2 mA h g-1can be obtained even at 1 C. Moreover, this kind of electrode pretreated in 1 M H2SO4solution displays improved stability of cycle, a capacity of 146.7 mA h g-1can be obtained after 100 cycles, and its corresponding active material utilization ratio can reach 65%. © 2013 Elsevier B.V. All rights reserved.