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, 0.4→1.0 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.
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Tada et al. (2007) studied this question.
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