Data-driven discovery of electrocatalysts for CO2 reduction using active motifs-based machine learning

Dong Hyeon Mok, Hong Li, Guiru Zhang, Chaehyeon Lee, Kun Jiang () and Seoin Back ()
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Dong Hyeon Mok: Sogang University
Hong Li: Shanghai Jiao Tong University
Guiru Zhang: Shanghai Jiao Tong University
Chaehyeon Lee: Sogang University
Kun Jiang: Shanghai Jiao Tong University
Seoin Back: Sogang University

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract The electrochemical carbon dioxide reduction reaction (CO2RR) is an attractive approach for mitigating CO2 emissions and generating value-added products. Consequently, discovery of promising CO2RR catalysts has become a crucial task, and machine learning (ML) has been utilized to accelerate catalyst discovery. However, current ML approaches are limited to exploring narrow chemical spaces and provide only fragmentary catalytic activity, even though CO2RR produces various chemicals. Here, by merging pre-developed ML model and a CO2RR selectivity map, we establish high-throughput virtual screening strategy to suggest active and selective catalysts for CO2RR without being limited to a database. Further, this strategy can provide guidance on stoichiometry and morphology of the catalyst to researchers. We predict the activity and selectivity of 465 metallic catalysts toward four expected reaction products. During this process, we discover previously unreported and promising behavior of Cu-Ga and Cu-Pd alloys. These findings are then validated through experimental methods.

Date: 2023
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DOI: 10.1038/s41467-023-43118-0

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