Hydrogen nanobubble at normal hydrogen electrode
Hydrogen nanobubble at normal hydrogen electrode
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DOI：
10.1088/0953-8984/25/18/184008
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
S. Nakabayashi;R. Shinozaki;Y. Senda;H. Yoshikawa
中科院分区：
文献类型：
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作者：
S. Nakabayashi;R. Shinozaki;Y. Senda;H. Yoshikawa
电化学形成的氢纳米气泡在铂旋转盘电极（RDE）检测的再氧化电荷。在开路条件下，在固定的铂和金单晶电极上，通过AFM轻敲形貌测量氢纳米气泡的溶解时间过程。在铂上的气泡溶解比在金上的快得多，因为在铂表面上进行了两种类型的扩散，体扩散和表面扩散，而在金电极上禁止了表面扩散。这些结果表明，正常氢电极的电化学反应在氢纳米气泡周围的三相界面上部分非均匀地进行。
Electrochemically formed hydrogen nanobubbles at a platinum rotating disk electrode (RDE) were detected by re-oxidation charge. The dissolution time course of the hydrogen nanobubbles was measured by AFM tapping topography under open-circuit conditions at stationary platinum and gold single-crystal electrodes. The bubble dissolution at platinum was much faster than that at gold because two types of diffusion, bulk and surface diffusion, proceeded at the platinum surface, whereas surface diffusion was prohibited at the gold electrode. These findings indicated that the electrochemical reaction of normal hydrogen electrode partly proceeded heterogeneously on the three-phase boundary around the hydrogen nanobubble.