In Situ Time-Resolved Dynamic Surface Events on the Pt/C Cathode in a Fuel Cell under Operando Conditions (pages 4310–4315)
Mizuki Tada, Shigeaki Murata, Takahiko Asakoka, Kazutaka Hiroshima, Kazu Okumura, Hajime Tanida, Tomoya Uruga, Haruyuki Nakanishi, Shin-ichi Matsumoto, Yasuhiro Inada, Masaharu Nomura and Yasuhiro Iwasawa
Article first published online: 4 MAY 2007 | DOI: 10.1002/anie.200604732
On the Pt/C cathode in a fuel cell, dynamic surface events were investigated by novel X-ray absorption techniques (see Fourier transform for the oxidation process, 0.41.0 V). Evidence for Pt dissolution at the cathode was found, and the reaction kinetics of the electron-transfer processes, as well as redox structural changes and a significant time lag between the events, were observed for the first time under operando conditions.