デジタルマイクロ天秤による鉛蓄電池充放電反応のその場測定 In-Situ Measurement on Charge-Discharge Reaction of Lead Acid Battery Using Digital Microbalance

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Many electrode reactions have the mass change in addition to the charge transfer. In this study, a peculiar system was built and tested using a digital microbalance with the sensitivity of 10<SUP>-5</SUP> g in order to measure in-situ the mass change of the active materials in a lead-acid battery during charge-discharge reaction. On close inspection by the Cu electrodeposition, the mass change in-site measured by the system, which was corrected on account of the buoyancy of the electrolyte to the electrode, was good agreement with the value obtained by the ex-situ measurement before and after the test. On the other hand, the higher the current density during electrolytic oxidation of Pb, the smaller the production rate of PbSO<SUB>4</SUB> and the larger that of PbO<SUB>2</SUB>. High concentration of H<SUB>2</SUB>SO<SUB>4</SUB> also brought larger amount of PbO<SUB>2</SUB> for all the same quantity of electricity. Moreover, a part of the discharge product PbSO<SUB>4</SUB> could not returned to the PbO<SUB>2</SUB> during charge-discharge cycling, as the cycling proceeded. The difference of the electrode mass was eventually observed between the start of the cycling and the finish of the 3<SUP>rd</SUP> charging. The in-situ measurement also revealed that the reaction of PbSO<SUB>4</SUB> to Pb and that of Pb to PbSO<SUB>4</SUB> could start in the latter half of discharging and at the beginning of charging respectively.

収録刊行物

  • Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan

    Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan 124(3), 184-189, 2008-03-25

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10021121394
  • NII書誌ID(NCID)
    AA12188381
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    18816118
  • NDL 記事登録ID
    9440834
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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