High-Performance Perovskite Composite Electrocatalysts Enabled by Controllable Interface Engineering.

Autor: Xu X; WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, WA, 6102, Australia., Pan Y; Centre for Future Materials, University of Southern Queensland, Springfield Central, QLD, 4300, Australia., Ge L; Centre for Future Materials, University of Southern Queensland, Springfield Central, QLD, 4300, Australia., Chen Y; School of Material Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore., Mao X; School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, 4000, Australia., Guan D; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China., Li M; School of Chemical Engineering, The University of Queensland, St. Lucia, QLD, 4072, Australia., Zhong Y; WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, WA, 6102, Australia., Hu Z; Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187, Dresden, Germany., Peterson VK; Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW, 2234, Australia., Saunders M; Centre for Microscopy, Characterisation and Analysis (CMCA), The University of Western Australia, Perth, WA, 6009, Australia., Chen CT; National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan., Zhang H; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China., Ran R; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China., Du A; School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, 4000, Australia., Wang H; Centre for Future Materials, University of Southern Queensland, Springfield Central, QLD, 4300, Australia., Jiang SP; WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, WA, 6102, Australia., Zhou W; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China., Shao Z; WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, WA, 6102, Australia.; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211800, P. R. China.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2021 Jul; Vol. 17 (29), pp. e2101573. Date of Electronic Publication: 2021 Jun 17.
DOI: 10.1002/smll.202101573
Abstrakt: Single-phase perovskite oxides that contain nonprecious metals have long been pursued as candidates for catalyzing the oxygen evolution reaction, but their catalytic activity cannot meet the requirements for practical electrochemical energy conversion technologies. Here a cation deficiency-promoted phase separation strategy to design perovskite-based composites with significantly enhanced water oxidation kinetics compared to single-phase counterparts is reported. These composites, self-assembled from perovskite precursors, comprise strongly interacting perovskite and related phases, whose structure, composition, and concentration can be accurately controlled by tailoring the stoichiometry of the precursors. The composite catalyst with optimized phase composition and concentration outperforms known perovskite oxide systems and state-of-the-art catalysts by 1-3 orders of magnitude. It is further demonstrated that the strong interfacial interaction of the composite catalysts plays a key role in promoting oxygen ionic transport to boost the lattice-oxygen participated water oxidation. These results suggest a simple and viable approach to developing high-performance, perovskite-based composite catalysts for electrochemical energy conversion.
(© 2021 Wiley-VCH GmbH.)
Databáze: MEDLINE
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