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Effect of Cerium on Gas Evolution Behavior of Pb-Ca-Sn Alloy by Guanfa Lin; Genshu Zhou; Dangguo Li; Maosheng Zheng is a Materials Science article available to read on EtoBox.

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The effect of Ce on the behavior of gas evolution on Pb-Ca-Sn alloy in 4.5 mol \* L ' H2S04 was investigated using cyclic voltammetry ( CV ) , cathodic polarization curves and AC impedance ( EIS ) . Cyclic voltammetry pxperiments show that the current of oxygen evolution on Pb-Ca-Sn-Ce electrode is lower than that of Pb-Ca-Sn electrode in the same anodic voltage. Moreover, the oxygen evolution potential on the former electrode is greater than that on the latter, and this means that Ce can increase the potential of oxygen evolution on Pb-Ca-Sn alloy. The AC impedance experiments show that Ce can also enhance the resistance of hydrogen evolution on Pb-Ca-Sn electrode, i . e . , Ce can inhibit the hydrogen evolution on Pb-Ca-Sn electrode. The reason why Ce decreases the volume of hydrogen evolution on Pb-Ca-Sn alloy is that Ce increases the resistance of absorbing step of hydrogen evolution reaction. All the experimental results indicate that Pb-Ca-Sn-Ce alloy can rapidly decrease the oxygen and hydrogen evolution on Pb-Ca-Sn-Ce alloy. It is concluded that Pb-Ca-Sn-Ce alloy can promote the maintenance-free property of lead acid battery, and can serve as the candidate of the grid mater

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Author

Guanfa Lin; Genshu Zhou; Dangguo Li; Maosheng Zheng

Publisher

Elsevier Science; Elsevier ; The Metallurgical Industry Press; Elsevier BV (ISSN 1002-0721)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)