Platinum dissolution in nitrogen oxides-containing HClO4 solution studied by electrochemical quartz crystal microbalance

H. Kuroe, T. Morita, Y. Uchiyama, T. Abe, S. Imabayashi

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Platinum (Pt) dissolution has been elucidated by measuring a mass loss of Pt black-deposited Au quartz resonators in 0.1 mol dm-3 HClO 4 containing NaNO2. A continuous weight loss of ca. 50 ng cm-2 cycle-1 was detected at [NaNO2] = 0.01 mol dm-3 under the potential cycling between 0.6 and 1.4 V vs. RHE. The magnitude of Pt dissolution depends on the concentration of NaNO2 and the range of potential cycling. The average mass loss decreases to 5∼10 ng cm-2 cycle-1 at [NaNO2] = 1 mmol dm -3. The Pt dissolution occurs when the higher potential limit is more than 1.0 V vs. RHE and the lower potential limit is less than 0.9 V vs. RHE, suggesting that the reduction of Pt oxide in the presence of NaNO2 in the bulk solution contributes to the dissolution.

本文言語English
ホスト出版物のタイトルPolymer Electrolyte Fuel Cells 12, PEFC 2012
出版社Electrochemical Society Inc.
ページ1607-1612
ページ数6
2
ISBN(印刷版)9781607683506
DOI
出版ステータスPublished - 2013
イベント12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting - Honolulu, HI, United States
継続期間: 2012 10 72012 10 12

出版物シリーズ

名前ECS Transactions
番号2
50
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Conference

Conference12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting
国/地域United States
CityHonolulu, HI
Period12/10/712/10/12

ASJC Scopus subject areas

  • 工学(全般)

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