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Design of a High Throughput 25‐Well Parallel Electrolyzer for the Accelerated Discovery of CO 2 Reduction Catalysts via a Combinatorial Approach
Author(s) -
Dang Tram,
Ramsaran Richard,
Roy Sayak,
Froehlich Jesse,
Wang Joseph,
Kubiak Clifford P.
Publication year - 2011
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201100346
Subject(s) - electrocatalyst , electrolysis , catalysis , reduction (mathematics) , throughput , electrochemistry , nickel , chemistry , combinatorial chemistry , computer science , materials science , inorganic chemistry , chemical engineering , electrode , mathematics , organic chemistry , engineering , telecommunications , geometry , electrolyte , wireless
A combinatorial approach is described for screening homogeneous CO 2 reduction electrocatalysts by means of a high‐throughput 25‐well parallel electrolyzer. Active catalysts were then screened by three methods: (1) the presence of CO gas in the electrolyzer head space; (2) a pH change for the individual solutions before and after bulk electrolysis due to proton consumption during CO 2 reduction; and (3) other physical attributes. Based on these screening methods, two solutions out of the 25 were selected for further study. One out of two selected solutions, nickel cyclam, a well‐known CO 2 reduction electrocatalyst, was correctly identified to be the most active.