Hydrogen Evolution Characteristics of Sputter-Deposited Co-Mo, Co-Al and Co-Mo-Al Alloy Electrodes in NaOH Solution

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Binary Co–Mo and Co–Al, and ternary Co–Mo–Al alloy electrodes for hydrogen evolution were prepared by using sputter deposition on a nickel substrate with good adhesion. The hydrogen evolution reaction (HER) of these alloy electrodes in the deaerated 1 kmol·m<SUP>−3</SUP> NaOH at 303 K is enhanced significantly compared with pure cobalt electrode. The effective surface area of these alloy electrodes estimated from ac impedance technique is largely increased by leaching of aluminum into alkaline solution. The electrocatalytic activity sequence is Co–Mo–Al>Co–Mo>Co–Al. The maximum activity is obtained for Co–10Mo–58Al alloy with a hydrogen overpotential as low as 110 mV at 10<SUP>3</SUP> A·m<SUP>−2</SUP>. The enhancement of HER is attributed to both the synergistic effect of alloy constituents and the large effective surface area.

収録刊行物

  • Materials transactions, JIM

    Materials transactions, JIM 39(10), 1017-1023, 1998-10

    社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10003804267
  • NII書誌ID(NCID)
    AA10699969
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09161821
  • NDL 記事登録ID
    4587174
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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