Electronic Conductivity of Films of Electroflocculated 2 nm Iridium Oxide Nanoparticles

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• 作者：Kwok-Fan Chow ; Tessa M. Carducci ; Royce W. Murray
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：March 5, 2014
• 年：2014
• 卷：136
• 期：9
• 页码：3385-3387
• 全文大小：218K
• 年卷期：v.136,no.9(March 5, 2014)
• ISSN：1520-5126

文摘

The electronic conductivity of films of iridium oxide (IrO_x) composed of ca. 2 nm nanoparticles (NPs) is strongly dependent on the film oxidation state. The Ir^IVO_x NPs can be electrochemically converted to several oxidation states, ranging from Ir^III to Ir^V oxides. The NP films exhibit a very high apparent conductivity, e.g., 10^鈥? S cm^鈥?, when the NPs are in the oxidized +4/+5 state. When the film is fully reduced to its Ir^III state, the apparent conductivity falls to 10^鈥? S cm^鈥?.