Barison S, De Battisti A, Fabrizio M, Daolio S, Piccirillo C
IPELP CNR, Corso Stati Uniti 4, 35127 Padova, Italy.
Rapid Commun Mass Spectrom. 2000;14(23):2165-9. doi: 10.1002/1097-0231(20001215)14:23<2165::AID-RCM148>3.0.CO;2-H.
The IrO(2)/RuO(2)/TiO(2) ternary system is well known for its electrocatalytic activity towards oxygen- and chlorine-evolution reactions. Electrochemical processing induces noticeable chemical and morphological modifications on these electrodes, depending on the noble metal oxide content. In this work, cathodic/anodic polarization and the oxygen-evolution reaction were studied in order to evaluate the electrocatalytic activity at various noble metal oxide percentages. The best performing electrode (30 mol% noble metal oxides) was analyzed before and after electrochemical tests by means of secondary ion mass spectrometry (SIMS) in order to determine the chemical composition modification which occurred on the surface and in deeper regions of the mixed-oxide film.
IrO(2)/RuO(2)/TiO(2)三元体系因其对析氧反应和析氯反应的电催化活性而闻名。电化学处理会使这些电极产生显著的化学和形态变化，这取决于贵金属氧化物的含量。在这项工作中，研究了阴极/阳极极化和析氧反应，以评估不同贵金属氧化物百分比下的电催化活性。通过二次离子质谱（SIMS）对性能最佳的电极（30摩尔%贵金属氧化物）在电化学测试前后进行分析，以确定混合氧化物膜表面和更深区域发生的化学成分变化。
