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Enabling solar fuels technology by high throughput discovery of earth abundant oxygen evolution reaction catalysts

Haber, Joel and Guevarra, Dan and Jones, Ryan and Shinde, Aniketa and Becerra, Natalie and Xiang, Chengxiang and Mitrovic, Slobodan and Jung, Suho and Kisielowski, Christian and Yano, Junko and Jin, Jian and Gregoire, John (2015) Enabling solar fuels technology by high throughput discovery of earth abundant oxygen evolution reaction catalysts. Abstracts of Papers of the American Chemical Society, 249 . INOR-45. ISSN 0065-7727.

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The High Throughput Experimentation (HTE) project of the Joint Center for Artificial Photosynthesis performs accelerated discovery of new earth- abundant photoabsorbers and electrocatalysts. We will describe several new screening instruments for high throughput (photo- ) electrochem. measurements and summarize the discovery pipelines. This approach will be illustrated using the high throughput discovery, follow- on verification, and device implementation of a new quaternary metal oxide catalyst. Discovering improved electrocatalysts for the oxygen evolution reaction (OER) is of great importance for efficient solar fuels generation, regenerative fuel cells, and recharging metal air batteries. We report a new Ce- rich family of active catalysts composed of earth abundant elements, which was discovered using high- throughput methods to produce 5456 discrete compns. in the (Ni- Fe- Co- Ce) Ox compn. space. The activity and stability of this new OER catalyst was verified by re- synthesis and extensive electrochem. testing of samples in a std. format in 1.0 M NaOH. Characterization of selected compns. by XRD, XPS, SEM, TEM, EDS, XRF mapping, and EXAFS both as- synthesized and after electrochem. testing, reveal the importance of nanostructure to the obsd. electrochem. performance. The discovery of addnl. electrocatalysts by expansion of the compn. space investigated and of new compn. spaces tested for OER activity and stability under acidic conditions will be reported.

Item Type:Article
Related URLs:
URLURL TypeDescription Website
Haber, Joel0000-0001-7847-5506
Guevarra, Dan0000-0002-9592-3195
Jones, Ryan0000-0002-4629-3115
Shinde, Aniketa0000-0003-2386-3848
Xiang, Chengxiang0000-0002-1698-6754
Mitrovic, Slobodan0000-0001-8913-8505
Jung, Suho0000-0002-8119-3902
Kisielowski, Christian0000-0001-6425-0779
Yano, Junko0000-0001-6308-9071
Gregoire, John0000-0002-2863-5265
Additional Information:© 2015 American Chemical Society.
Record Number:CaltechAUTHORS:20150422-095105837
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56860
Deposited By: Tony Diaz
Deposited On:22 Apr 2015 19:19
Last Modified:09 Mar 2020 13:19

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