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化学学报
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化学学报 ›› 2002, Vol. 60 ›› Issue (4): 643-646. 上一篇    下一篇

研究论文

铈降低在硫酸溶液中生长的阳极Pb(II)氧化物膜的电阻的研究

柳厚田;张新华;杨炯;杨春晓;周伟舫   

  1. 复理大学化学系.上海(200433)
  • 发布日期:2002-04-15

Study of the Effect of Cerium on Reducing the Resistance of the Anodic Pb(II) Oxides Film Formed in Sulfuric Acid Solution

Liu Houtian;Zhang Xinhua;Yang Jiong;Yang Chunxiao;Zhou Weifang   

  1. Department of Chemistry, Fudan University.Shanghai(200433)
  • Published:2002-04-15

PDF

438

被引次数

9

应用电化学阻抗频谱法、线性电位扫描法和光电流技术研究了在4.5 mol· dm~(-3) H_2SO_4溶液中Pb-1%(at.)Ce（简称Pb-1Ce）合金在0.9 V (vs. Hg/Hg_2SO_4电极)生长的阳极Pb(II)氧化物膜的电阻较纯铅的低的原因。实验结 果表明，Ce阻抑阳极Pb(II)氧化物膜的生长并增加其孔率，从而降低其电阻。

关键词: 铅合金, 铈合金, 阻抗, 扫描, 光电流

The anodic Pb(II) oxides film formed on Pb-1%(at.)Ce and Pb electrodes at 0.9 V (vs. Hg/Hg_2SO_4 electrode) in 4.5 mol·dm~(-3) H_2SO_4 solution were studied using the electrochemical impedance spectroscopy, linear sweep voltammetry and photocurrent method. The experimental results show that the addition of cerium into lead metal inhibits the growth of the anodic Pb(II) oxides film and reduces its resistance. The lowering of the resistance may be mainly due to the larger porosity of the film grown on the Pb-Ce alloy.

Key words: LEAD ALLOYS, CERIUM ALLOYS, IMPEDANCE, SCANNING, PHOTOCURRENT

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