Elucidating the alkaline oxygen evolution reaction mechanism on platinum

Favaro, M.; Valero-Vidal, C.; Eichhorn, J.; Toma, F. M.; Ross, P. N.; Yano, J.; Liu, Z.; Crumlin, E. J.

doi:10.1039/c7ta00409e

Title: Elucidating the alkaline oxygen evolution reaction mechanism on platinum

Journal Article · Tue Mar 07 00:00:00 EST 2017 · Journal of Materials Chemistry. A

DOI:https://doi.org/10.1039/c7ta00409e· OSTI ID:1436336

Favaro, M. ^[1]; Valero-Vidal, C. ^[2]; Eichhorn, J. ^[3];

^[3]; Ross, P. N. ^[4]; Yano, J. ^[5]; Liu, Z. ^[6];

^[2]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source. Joint Center for Artificial Photosynthesis. Chemical Sciences Division
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source. Joint Center for Energy Storage Research
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Artificial Photosynthesis. Molecular Biophysics and Integrated Bioimaging Division
Chinese Academy of Sciences (CAS), Shanghai (China). State Key Lab. of Functional Materials for Informatics. Shanghai Inst. of Microsystem and Information Technology; ShanghaiTech Univ. (China). Division of Condensed Matter Physics and Photon Science. School of Physical Science and Technology

Understanding the interplay between surface chemistry, electronic structure, and reaction mechanism of the catalyst at the electrified solid/liquid interface will enable the design of more efficient materials systems for sustainable energy production. The substantial progress in operando characterization, particularly using synchrotron based X-ray spectroscopies, provides the unprecedented opportunity to uncover surface chemical and structural transformations under various (electro)chemical reaction environments. In this work, we study a polycrystalline platinum surface under oxygen evolution conditions in an alkaline electrolyte by means of ambient pressure X-ray photoelectron spectroscopy performed at the electrified solid/liquid interface. We elucidate previously inaccessible aspects of the surface chemistry and structure as a function of the applied potential, allowing us to propose a reaction mechanism for oxygen evolution on a platinum electrode in alkaline solutions.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); LBNL Laboratory Directed Research and Development (LDRD) Program; National Natural Science Foundation of China (NSFC)

Grant/Contract Number:: AC02-05CH11231; SC0004993; 11227902

OSTI ID:: 1436336

Journal Information:: Journal of Materials Chemistry. A, Vol. 5, Issue 23; ISSN 2050-7488

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 73 works

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