@article{bibcite_36753, author = {Tingting Zhai and Hao Wang and Sarah R Beaudoin and Ran Zhang and Minkyoung Kwak and Shujin Hou and Zhengxiao Guo and Shannon W Boettcher}, title = {Perovskite Catalysts for Pure-Water-Fed Anion-Exchange-Membrane Electrolyzer Anodes: Co-design of Electrically Conductive Nanoparticle Cores and Active Surfaces}, abstract = {
Anion-exchange-membrane water electrolyzers (AEMWEs) are a possible low-capital-expense, efficient, and scalable hydrogen-production technology with inexpensive hardware, earth-abundant catalysts, and pure water. However, pure-water-fed AEMWEs remain at an early stage of development and suffer from inferior performance compared with proton-exchange-membrane water electrolyzers (PEMWEs). One challenge is to develop effective non-platinum-group-metal (non-PGM) anode catalysts and electrodes in pure-water-fed AEMWEs. We show how LaNiO3-based perovskite oxides can be tuned by cosubstitution on both A- and B-sites to simultaneously maintain high metallic electrical conductivity along with a degree of surface reconstruction to expose a stable Co-based active catalyst. The optimized perovskite, Sr0.1La0.9Co0.5Ni0.5O3, yielded pure-water AEMWEs operating at 1.97 V at 2.0 A cm{\textendash}2 at 70 {\textdegree}C with a pure-water feed, thus illustrating the utility of the catalyst design principles.
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}, year = {2025}, booktitle = {Journal of the American Chemical Society}, journal = {Journal of the American Chemical Society}, series = {Journal of the American Chemical Society}, volume = {147}, pages = {15448-15458}, month = {07/05/2025}, institution = {American Chemical Society (ACS)}, publisher = {American Chemical Society (ACS)}, issn = {0002-7863, 1520-5126}, url = {https://doi.org/10.1021/jacs.5c01621}, doi = {10.1021/jacs.5c01621}, }