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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


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.

Original languageEnglish
Title of host publicationECS Transactions
Number of pages6
Publication statusPublished - 2012
Event12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting - Honolulu, HI
Duration: 2012 Oct 72012 Oct 12


Other12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting
CityHonolulu, HI


ASJC Scopus subject areas

  • Engineering(all)

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