High-throughput discovery of non-noble materials for HER catalysis Wanyi Zheng, Hansaem Jang, Marco Zanella, Christopher Hampson, Ahmad Malik, Alex Cowan, Troy Manning, Ruiyong Chen, Matthew Rosseinsky Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom The discovery of cost-effective, non-noble metal catalysts for the alkaline hydrogen evolution reaction (HER) is critical for enabling large-scale green hydrogen production. In this work, we present a high-throughput screening workflow integrating a modified scanning electrochemical microscopy (SECM) setup with automated thin-film sample library fabrication and characterisation. This approach accelerates the evaluation of catalytic activity across multi-elemental compositions. Using this workflow, a ternary transition metal alloy was identified as an active HER catalyst under alkaline conditions. The successful identification of this material highlights the effectiveness of the workflow in facilitating rapid catalyst discovery and optimisation. References 1. C. J. Hampson, M. P. Smith, L. L. Arciero, C. M. Collins, L. M. Daniels, T. D. Manning, M. W. Gaultois, J. B. Claridge and M. J. Rosseinsky, Chemical Science, 2024, 15, 2640-2647.1. 2. C. J. Hampson, M. P. Smith, L. L. Arciero, C. M. Collins, L. M. Daniels, T. D. Manning, M. W. Gaultois, J. B. Claridge and M. J. Rosseinsky, Chemical Science, 2024, 15, 2640-2647.
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