High throughput electrochemical techniques are widely applied in material discovery and optimization. For many applications, the most desirable electrochemical characterization requires a three-electrode cell under potentiostat control. In high throughput screening, a material library is explored by either employing an array of such cells, or rastering a single cell over the library. To attain this latter capability with unprecedented throughput, we have developed a highly integrated, compact scanning droplet cell that is optimized for rapid electrochemical and photoeletrochemical measurements. Using this cell, we screened a quaternary oxide library as (photo)electrocatalysts for the oxygen evolution (water splitting) reaction. High quality electrochemical measurements were carried out and key electrocatalytic properties were identified for each of 5456 samples with a throughput of 4 s per sample.
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February 2013
Research Article|
February 12 2013
Scanning droplet cell for high throughput electrochemical and photoelectrochemical measurements
John M. Gregoire;
John M. Gregoire
a)
1Joint Center for Artificial Photosynthesis,
California Institute of Technology
, Pasadena, California 91125, USA
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Chengxiang Xiang;
Chengxiang Xiang
1Joint Center for Artificial Photosynthesis,
California Institute of Technology
, Pasadena, California 91125, USA
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Xiaonao Liu;
Xiaonao Liu
1Joint Center for Artificial Photosynthesis,
California Institute of Technology
, Pasadena, California 91125, USA
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Martin Marcin;
Martin Marcin
1Joint Center for Artificial Photosynthesis,
California Institute of Technology
, Pasadena, California 91125, USA
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Jian Jin
Jian Jin
1Joint Center for Artificial Photosynthesis,
California Institute of Technology
, Pasadena, California 91125, USA
2Engineering Division, Lawrence Berkeley
National Laboratory
, Berkeley, California 94720, USA
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Rev. Sci. Instrum. 84, 024102 (2013)
Article history
Received:
October 15 2012
Accepted:
January 22 2013
Citation
John M. Gregoire, Chengxiang Xiang, Xiaonao Liu, Martin Marcin, Jian Jin; Scanning droplet cell for high throughput electrochemical and photoelectrochemical measurements. Rev. Sci. Instrum. 1 February 2013; 84 (2): 024102. https://doi.org/10.1063/1.4790419
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