Effects of pH on dissolution and surface area loss of platinum due to potential cycling

Amar Prasad Yadav, Takayashi Okayasu, Yu Sugawara, Atsushi Nishikata, Tooru Tsuru

研究成果: Article査読

24 被引用数 (Scopus)

抄録

By using electrodeposited Pt nanoparticle electrodes, we clarify the relationship between the amount of dissolved Pt and the change in the electrochemical active surface area (ECA) of Pt due to potential cycling. Cyclic voltammetry of Pt was carried out in the pH range 0.4-4.0 in three different potential windows of 0.0-0.6, 0.0-1.0, and 0.0-1.4 V vs. RHE. The amount of dissolved Pt was almost negligible in the pH 3.0 solution; however, the ECA loss in this solution was almost similar to that observed in the pH 0.4 solution, in which the amount of dissolved Pt was the largest. The ECA loss was high up to the anodic potential limit of 1.0 V and almost remained constant when the potential was increased to the anodic potential limit of 1.4 V.

本文言語English
ページ(範囲)C190-C194
ジャーナルJournal of the Electrochemical Society
159
4
DOI
出版ステータスPublished - 2012 2 29
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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