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Electrochemiluminescence Imaging-Based High-Throughput Screening Platform for Electrocatalysts Used in Fuel Cells
- Lin, Xiaomei, Zheng, Liyan, Gao, Gongmin, Chi, Yuwu, Chen, Guonan
- Analytical chemistry 2012 v.84 no.18 pp. 7700-7707
- catalysts, electric current, electrochemiluminescence, electrochemistry, electrodes, fuel cells, image analysis, instrumentation, oxygen, screening
- High throughput screening is very important for accelerating the discovery of fuel cell catalysts. In this paper, a novel electrochemiluminescence (ECL, a technology changing electric current into light) imaging-based screening platform for electrocatalysts used in fuel cells has been developed. The ECL imaging-based screening platform consists of bipolar electrode array-bridged electrochemical (EC)/ECL twin cells, by which electrocatalytic reduction currents of O₂ can be imaged directly by ECL. The ECL imaging-based screening platform is simple in instrumentation, can image the “current–voltage” dependence directly, reversibly, and sensitively, and may enable the activities of electrocatalysts to be evaluated in a high-throughput way. The developed ECL imaging-based screening platform is envisioned to have promising applications in high throughput combinatorial screening of electrocatalysts for fuel cells.