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Published February 2013 | Published
Journal Article Open

Scanning droplet cell for high throughput electrochemical and photoelectrochemical measurements

Abstract

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.

Additional Information

© 2013 American Institute of Physics. Received 15 October 2012; accepted 22 January 2013; published online 12 February 2013. This material 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). The authors thank Mr. Lung-Sheng Lin for assistance in fabrication of the cell and Mr. William Fisher of Lawrence Berkeley National Laboratory for assistance in fabrication of the capillary for the reference electrode. The authors also thank Dr. Eric McFarland, Dr. Nathan Lewis, Dr. Carl Koval, and Dr. Joachim Lewerenz for helpful discussions.

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August 22, 2023
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October 23, 2023