Stability of nanostructured iridium oxide electrocatalysts during oxygen evolution reaction in acidic environment

被引：249

作者：

Cherevko, Serhiy ^{[1
]}

Reier, Tobias

Zeradjanin, Aleksandar R. ^{[1
]}

Pawolek, Zarina ^{[2
]}

Strasser, Peter ^{[2
]}

Mayrhofer, Karl J. J. ^{[1
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, Dept Interface Chem & Surface Engn, D-40237 Dusseldorf, Germany

[2] Tech Univ Berlin, Dept Chem, D-10623 Berlin, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2014年 / 48卷

关键词：

Oxygen evolution; Energy conversion; Iridium oxide; IrO2; Dissolution; Corrosion; ELECTROCHEMICAL PROPERTIES; NOBLE-METALS; SERVICE LIFE; ANODES; CORROSION; SURFACE; IRO2; SUBSTRATE; ELECTRODE; BEHAVIOR;

D O I：

10.1016/j.elecom.2014.08.027

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical stability of thermally prepared Ir oxide films is investigated using a scanning flow cell (SFC)-inductively coupled plasma mass-spectrometer (ICP-MS) setup under transient and stationary potential and/or current conditions. Time-resolved dissolution rates provide important insights into critical conditions for material breakdown and a fully quantitative in-situ assessment of the electrochemical stability during oxygen evolution reaction (OER) conditions. In particular, the results demonstrate that stability and OER activity of the IrOx catalysts strongly depend on the chemical and structural nature of Ir oxide species and their synthesis conditions. (C) 2014 The Authors. Published by Elsevier B.V.

引用

页码：81 / 85

页数：5

共 44 条

[31] Mesoporous IrO2 Films Templated by PEO-PB-PEO Block-Copolymers: Self-Assembly, Crystallization Behavior, and Electrocatalytic Performance [J].