High-Performance Perovskite Composite Electrocatalysts Enabled by Controllable Interface Engineering

Xiaomin Xu; Yangli Pan; Lei Ge; Yubo Chen; Xin Mao; Daqin Guan; Mengran Li; Yijun Zhong; Zhiwei Hu; Vanessa K. Peterson; Martin Saunders; Chien Te Chen; Haijuan Zhang; Ran Ran; Aijun Du; Hao Wang; San Ping Jiang; Wei Zhou; Zongping Shao

doi:10.1002/smll.202101573

High-Performance Perovskite Composite Electrocatalysts Enabled by Controllable Interface Engineering

Xiaomin Xu, Yangli Pan, Lei Ge, Yubo Chen, Xin Mao, Daqin Guan, Mengran Li, Yijun Zhong, Zhiwei Hu, Vanessa K. Peterson, Martin Saunders, Chien Te Chen, Haijuan Zhang, Ran Ran, Aijun Du, Hao Wang, San Ping Jiang, Wei Zhou, Zongping Shao

College of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

218 Scopus citations

Abstract

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.

Original language	English
Article number	2101573
Journal	Small
Volume	17
Issue number	29
DOIs	https://doi.org/10.1002/smll.202101573
State	Published - 22 Jul 2021

Keywords

cation deficiency
controllable interface engineering
oxygen evolution reaction
perovskite composites
phase separation
water splitting

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/smll.202101573

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Xu, X., Pan, Y., Ge, L., Chen, Y., Mao, X., Guan, D., Li, M., Zhong, Y., Hu, Z., Peterson, V. K., Saunders, M., Chen, C. T., Zhang, H., Ran, R., Du, A., Wang, H., Jiang, S. P., Zhou, W., & Shao, Z. (2021). High-Performance Perovskite Composite Electrocatalysts Enabled by Controllable Interface Engineering. Small, 17(29), Article 2101573. https://doi.org/10.1002/smll.202101573

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title = "High-Performance Perovskite Composite Electrocatalysts Enabled by Controllable Interface Engineering",

abstract = "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.",

keywords = "cation deficiency, controllable interface engineering, oxygen evolution reaction, perovskite composites, phase separation, water splitting",

author = "Xiaomin Xu and Yangli Pan and Lei Ge and Yubo Chen and Xin Mao and Daqin Guan and Mengran Li and Yijun Zhong and Zhiwei Hu and Peterson, {Vanessa K.} and Martin Saunders and Chen, {Chien Te} and Haijuan Zhang and Ran Ran and Aijun Du and Hao Wang and Jiang, {San Ping} and Wei Zhou and Zongping Shao",

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year = "2021",

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doi = "10.1002/smll.202101573",

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TY - JOUR

T1 - High-Performance Perovskite Composite Electrocatalysts Enabled by Controllable Interface Engineering

AU - Xu, Xiaomin

AU - Pan, Yangli

AU - Ge, Lei

AU - Chen, Yubo

AU - Mao, Xin

AU - Guan, Daqin

AU - Li, Mengran

AU - Zhong, Yijun

AU - Hu, Zhiwei

AU - Peterson, Vanessa K.

AU - Saunders, Martin

AU - Chen, Chien Te

AU - Zhang, Haijuan

AU - Ran, Ran

AU - Du, Aijun

AU - Wang, Hao

AU - Jiang, San Ping

AU - Zhou, Wei

AU - Shao, Zongping

PY - 2021/7/22

Y1 - 2021/7/22

N2 - 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.

AB - 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.

KW - cation deficiency

KW - controllable interface engineering

KW - oxygen evolution reaction

KW - perovskite composites

KW - phase separation

KW - water splitting

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U2 - 10.1002/smll.202101573

DO - 10.1002/smll.202101573

M3 - 文章

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AN - SCOPUS:85108060650

SN - 1613-6810

VL - 17

JO - Small

JF - Small

IS - 29

M1 - 2101573

ER -

High-Performance Perovskite Composite Electrocatalysts Enabled by Controllable Interface Engineering

Abstract

Keywords

UN SDGs

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