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Parallel Electrochemical Treatment System and Application for Identifying Acid-Stable Oxygen Evolution Electrocatalysts

Jones, Ryan J. R. and Shinde, Aniketa and Guevarra, Dan and Xiang, Chengxiang and Haber, Joel A. and Jin, Jian and Gregoire, John M. (2015) Parallel Electrochemical Treatment System and Application for Identifying Acid-Stable Oxygen Evolution Electrocatalysts. ACS Combinatorial Science, 17 (2). pp. 71-75. ISSN 2156-8952. https://resolver.caltech.edu/CaltechAUTHORS:20150126-085330620

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Abstract

Many energy technologies require electrochemical stability or preactivation of functional materials. Due to the long experiment duration required for either electrochemical preactivation or evaluation of operational stability, parallel screening is required to enable high throughput experimentation. Imposing operational electrochemical conditions to a library of materials in parallel creates several opportunities for experimental artifacts. We discuss the electrochemical engineering principles and operational parameters that mitigate artifacts in the parallel electrochemical treatment system. We also demonstrate the effects of resistive losses within the planar working electrode through a combination of finite element modeling and illustrative experiments. Operation of the parallel-plate, membrane-separated electrochemical treatment system is demonstrated by exposing a composition library of mixed-metal oxides to oxygen evolution conditions in 1 M sulfuric acid for 2 h. This application is particularly important because the electrolysis and photoelectrolysis of water are promising future energy technologies inhibited by the lack of highly active, acid-stable catalysts containing only earth abundant elements.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/co500148pDOIArticle
http://pubs.acs.org/doi/abs/10.1021/co500148pPublisherArticle
ORCID:
AuthorORCID
Jones, Ryan J. R.0000-0002-4629-3115
Shinde, Aniketa0000-0003-2386-3848
Guevarra, Dan0000-0002-9592-3195
Xiang, Chengxiang0000-0002-1698-6754
Haber, Joel A.0000-0001-7847-5506
Gregoire, John M.0000-0002-2863-5265
Additional Information:© 2015 American Chemical Society. Received: September 26, 2014; Revised: December 1, 2014; Publication Date (Web): January 5, 2015. This manuscript is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy (Award No. DE-SC0004993).
Group:JCAP
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0004993
Subject Keywords:solar fuels, high throughput, oxygen evolution, electrochemical stability, combinatorial electrochemistry
Issue or Number:2
Record Number:CaltechAUTHORS:20150126-085330620
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150126-085330620
Official Citation:Parallel Electrochemical Treatment System and Application for Identifying Acid-Stable Oxygen Evolution Electrocatalysts Ryan J. R. Jones, Aniketa Shinde, Dan Guevarra, Chengxiang Xiang, Joel A. Haber, Jian Jin, and John M. Gregoire ACS Combinatorial Science 2015 17 (2), 71-75 DOI: 10.1021/co500148p
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54057
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 Jan 2015 17:13
Last Modified:09 Mar 2020 13:19

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