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Citation: WU Fan-Hua, LONG Xue-Mei, LI Wei-Shan, WU Ying-Min, CHENG Hong-Yu. Effect of Bisthum on The Formation of Lead Oxide on Pb-Bi Alloys[J]. Chinese Journal of Applied Chemistry, ;2006, 23(7): 739-742. shu

Effect of Bisthum on The Formation of Lead Oxide on Pb-Bi Alloys

1.
Department of Chemistry, South China Normal University, Ghuangzhou 510631

Corresponding author: LI Wei-Shan,
Received Date: 23 August 2005
Available Online: 30 March 2006
Fund Project: 国家自然科学基金(20373016) (20373016)广东省自然科学基金(031533)资助项目 (031533)

The formation of lead oxide,mono-oxide and dioxide,on Pb-Bi alloys in sulfuric solution was studied by means of linear sweeping voltammetry(LSV),scan electron spectroscopy(SEM),AC voltammetry and inductively coupled plasma atomic emission spectrum(ICP).The results obtained by LSV after applying a potential at 0.9 V for 20 min show that bismuth content lower than 0.103% in the alloys does not affect the formation of mono-oxide,but it will accelerate the formation of the mono-oxide when its content in the alloys is higher.Z' versus E curves indicate that the conductance increases with bismuth content increasing;similar behavior for the effect of bismuth on the formation of dioxide as that of mono-oxide can be found from the results obtained by LSV after applying a potential at 1.6 V for 20 min.It is shown by SEM that the oxides have more pores on the alloys with high bismuth content.It is found from ICP analysis that the stripping amount of bismuth in the alloys increases with bismuth content increasing.
- bismuth,
- lead mono-oxide,
- lead dioxide,
- battery,
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