鉛蓄電池用負極集電体に用いるPb合金の充電状態における腐食挙動

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タイトル別名
  • Corrosion Behavior of Pb Alloys as Negative Current Collector for Lead Acid Batteries in Charged State
  • ナマリ チクデンチヨウ フキョク シュウデンタイ ニ モチイル Pb ゴウキン ノ ジュウデン ジョウタイ ニ オケル フショク キョドウ

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<p>The corrosion behavior of the exposed part of the Pb alloy negative electrode from the electrolyte was analyzed upon charging, i.e., under the reduced state. Dissolved oxygen in the electrolyte affected the generation rate and the grain size of the PbSO4. From the potential measurements at the exposed part, it was found that the part not under reducing conditions and the generation reaction of PbSO4 progressed by the Jocal cell reaction. Furthermore, when the dissolved oxygen concentration in the electrolyte film on the exposed part increased, the potential at the exposed part became noble and the PbSO4 generation rate increased. On the other hand, the most anti-corrosive Pb alloy was the Pb-1.8% Sn-0.03% Se alloy. The reason was attributed to the dense corrosion layer formed on the surface, because the PbSO4 grain size became small by the synergistic effect of Sn and Se.</p>

収録刊行物

  • Electrochemistry

    Electrochemistry 73 (2), 135-140, 2005-02-05

    公益社団法人　電気化学会

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