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High-Throughput Mapping of the Electrochemical Properties of (Ni-Fe-Co-Ce)O_x Oxygen-Evolution Catalysts

Haber, Joel A. and Xiang, Chengxiang and Guevarra, Dan and Jung, Suho and Jin, Jian and Gregoire, John M. (2014) High-Throughput Mapping of the Electrochemical Properties of (Ni-Fe-Co-Ce)O_x Oxygen-Evolution Catalysts. ChemElectroChem, 1 (3). pp. 524-528. ISSN 2196-0216. http://resolver.caltech.edu/CaltechAUTHORS:20140731-100438286

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Abstract

Discovering improved electrocatalysts is critical for many technologically important processes and for the development of new clean-energy technologies. High-throughput methods for measuring fundamental electrochemical properties are demonstrated through the investigation of oxygen-evolution catalysis by using 665 oxide compositions containing nickel, iron, cobalt, and cerium. The behavior of each composition is characterized in 1.0 M NaOH(aq) by using a scanning drop three-electrode cell to perform chronopotentiometry (CP) and cyclic voltammetry experiments. CP measurements at different current densities identify different composition–performance trends, owing to underlying variations in fundamental electrochemical behavior. We report systematic, coincident, composition-dependent trends in the Tafel slopes and the reversible redox potentials of the catalysts. Applying high-throughput electrochemical methods provides insight into composition–property–performance relationships and motivates new directions for the study of catalyst mechanisms by using informatics and theory.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://onlinelibrary.wiley.com/doi/10.1002/celc.201300229/abstractPublisherArticle
http://dx.doi.org/10.1002/celc.201300229DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/celc.201300229/suppinfoRelated ItemSupporting Information
ORCID:
AuthorORCID
Jung, Suho0000-0002-8119-3902
Gregoire, John M.0000-0002-2863-5265
Alternate Title:High-Throughput Mapping of the Electrochemical Properties of (Ni-Fe-Co-Ce)Ox Oxygen-Evolution Catalysts
Additional Information:© 2014 Wiley-VCH Verlag GmbH & Co. Article first published online: 13 Dec 2013. Manuscript Received: 18 Nov 2013. This manuscript is based upon work performed by the Joint Center for Artificial Photosynthesis, an Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy (Award No. DE-SC0004993). The authors thank Dr. Charles McCrory for assistance with RDE experiments, and Drs. Manuel Soriaga, Alexis T. Bell, Mary Louie, and Yun Cai for helpful discussions.
Group:JCAP
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0004993
Subject Keywords:combinatorial chemistry; electrochemistry; heterogeneous catalysis; oxygen evolution reaction; solar fuels
Record Number:CaltechAUTHORS:20140731-100438286
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140731-100438286
Official Citation:Haber, J. A., Xiang, C., Guevarra, D., Jung, S., Jin, J. and Gregoire, J. M. (2014), High-Throughput Mapping of the Electrochemical Properties of (Ni-Fe-Co-Ce)Ox Oxygen-Evolution Catalysts. CHEMELECTROCHEM, 1: 524–528. doi: 10.1002/celc.201300229
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47702
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:31 Jul 2014 17:25
Last Modified:17 Mar 2017 19:09

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