The Common Intermediates of Oxygen Evolution and Dissolution Reactions during Water Electrolysis on Iridium

被引:440
作者
Kasian, Olga [1 ]
Grote, Jan-Philipp [1 ]
Geiger, Simon [1 ]
Cherevko, Serhiy [1 ,2 ]
Mayrhofer, Karl J. J. [1 ,2 ,3 ]
机构
[1] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany
[2] Forschungszentrum Julich, Helmholtz Inst Erlangen Nunberg Renewable Energy, Egerlandstr 3, D-91058 Erlangen, Germany
[3] Friedrich Alexander Univ Erlangen Nurnberg, Dept Chem & Biol Engn, Egerlandstr 3, D-91058 Erlangen, Germany
关键词
electrochemical mass spectrometry; iridium dissolution; oxygen evolution reaction; reaction mechanisms; water electrolysis; OXIDE-FILMS; ELECTRONIC-STRUCTURE; STABILITY; OXIDATION; CATALYST; ACTIVATION;
D O I
10.1002/anie.201709652
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Understanding the pathways of catalyst degradation during the oxygen evolution reaction is a cornerstone in the development of efficient and stable electrolyzers, since even for the most promising Ir based anodes the harsh reaction conditions are detrimental. The dissolution mechanism is complex and the correlation to the oxygen evolution reaction itself is still poorly understood. Here, by coupling a scanning flow cell with inductively coupled plasma and online electrochemical mass spectrometers, we monitor the oxygen evolution and degradation products of Ir and Ir oxides in situ. It is shown that at high anodic potentials several dissolution routes become possible, including formation of gaseous IrO3. On the basis of experimental data, possible pathways are proposed for the oxygen-evolution-triggered dissolution of Ir and the role of common intermediates for these reactions is discussed.
引用
收藏
页码:2488 / 2491
页数:4
相关论文
共 30 条
[21]   The electronic structure of iridium oxide electrodes active in water splitting [J].
Pfeifer, V. ;
Jones, T. E. ;
Velez, J. J. Velasco ;
Massue, C. ;
Greiner, M. T. ;
Arrigo, R. ;
Teschner, D. ;
Girgsdies, F. ;
Scherzer, M. ;
Allan, J. ;
Hashagen, M. ;
Weinberg, G. ;
Piccinin, S. ;
Haevecker, M. ;
Knop-Gericke, A. ;
Schloegl, R. .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2016, 18 (04) :2292-2296
[22]   The electronic structure of iridium and its oxides [J].
Pfeifer, Verena ;
Jones, Travis E. ;
Velez, Juan J. Velasco ;
Massue, Cyriac ;
Arrigo, Rosa ;
Teschner, Detre ;
Girgsdies, Frank ;
Scherzer, Michael ;
Greiner, Mark T. ;
Allan, Jasmin ;
Hashagen, Maike ;
Weinberg, Gisela ;
Piccinin, Simone ;
Haevecker, Michael ;
Knop-Gericke, Axel ;
Schloegl, Robert .
SURFACE AND INTERFACE ANALYSIS, 2016, 48 (05) :261-273
[23]   Electrocatalytic Oxygen Evolution Reaction in Acidic Environments - Reaction Mechanisms and Catalysts [J].
Reier, Tobias ;
Nong, Hong Nhan ;
Teschner, Detre ;
Schloegl, Robert ;
Strasser, Peter .
ADVANCED ENERGY MATERIALS, 2017, 7 (01)
[24]  
Sanchez Casalongue H. G., 2014, ANGEW CHEM, V126, P7297, DOI DOI 10.1002/ANGE.201402311
[25]   Combining theory and experiment in electrocatalysis: Insights into materials design [J].
Seh, Zhi Wei ;
Kibsgaard, Jakob ;
Dickens, Colin F. ;
Chorkendorff, I. B. ;
Norskov, Jens K. ;
Jaramillo, Thomas F. .
SCIENCE, 2017, 355 (6321)
[26]   A highly active and stable IrOx/SrIrO3 catalyst for the oxygen evolution reaction [J].
Seitz, Linsey C. ;
Dickens, Colin F. ;
Nishio, Kazunori ;
Hikita, Yasuyuki ;
Montoya, Joseph ;
Doyle, Andrew ;
Kirk, Charlotte ;
Vojvodic, Aleksandra ;
Hwang, Harold Y. ;
Norskov, Jens K. ;
Jaramillo, Thomas F. .
SCIENCE, 2016, 353 (6303) :1011-1014
[27]   The Stability Challenges of Oxygen Evolving Catalysts: Towards a Common Fundamental Understanding and Mitigation of Catalyst Degradation [J].
Spoeri, Camillo ;
Kwan, Jason Tai Hong ;
Bonakdarpour, Arman ;
Wilkinson, David P. ;
Strasser, Peter .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2017, 56 (22) :5994-6021
[28]  
Stamenkovic VR, 2017, NAT MATER, V16, P57, DOI [10.1038/NMAT4738, 10.1038/nmat4738]
[29]   DOES THE OXIDE LAYER TAKE PART IN THE OXYGEN EVOLUTION REACTION ON PLATINUM - A DEMS STUDY [J].
WILLSAU, J ;
WOLTER, O ;
HEITBAUM, J .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1985, 195 (02) :299-306
[30]   OXYGEN EVOLUTION ON RU AND RUO2 ELECTRODES STUDIED USING ISOTOPE LABELING AND ONLINE MASS-SPECTROMETRY [J].
WOHLFAHRTMEHRENS, M ;
HEITBAUM, J .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 237 (02) :251-260