Advanced High Entropy Perovskite Oxide Electrocatalyst for Oxygen Evolution Reaction

Thi Xuyen Nguyen; Yi Cheng Liao; Chia Chun Lin; Yen Hsun Su; Jyh Ming Ting

doi:10.1002/adfm.202101632

Advanced High Entropy Perovskite Oxide Electrocatalyst for Oxygen Evolution Reaction

Thi Xuyen Nguyen, Yi Cheng Liao, Chia Chun Lin, Yen Hsun Su, Jyh Ming Ting

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

302 Citations (Scopus)

Abstract

A new type of lanthanum-based high entropy perovskite oxide (HEPO) electrocatalyst for the oxygen evolution reaction is reported. The B-site lattices in the HEPO consist of five consecutive first-row transition metals, including Cr, Mn, Fe, Co, and Ni. Equimolar and five non-equimolar HEPO electrocatalysts are studied for their OER electrocatalytic performance. In the five non-equimolar HEPOs, the concentration of one of the five transition metals is doubled in individual samples. The performances of all the HEPOs outperform the single perovskite oxides. The optimized La(CrMnFeCo₂Ni)O₃ HEPO exhibits an outstanding OER overpotential of 325 mV at a current density of 10 mA cm⁻² and excellent electrochemical stability after 50 h of testing.

Original language	English
Article number	2101632
Journal	Advanced Functional Materials
Volume	31
Issue number	27
DOIs	https://doi.org/10.1002/adfm.202101632
Publication status	Published - 2021 Jul 2

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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title = "Advanced High Entropy Perovskite Oxide Electrocatalyst for Oxygen Evolution Reaction",

abstract = "A new type of lanthanum-based high entropy perovskite oxide (HEPO) electrocatalyst for the oxygen evolution reaction is reported. The B-site lattices in the HEPO consist of five consecutive first-row transition metals, including Cr, Mn, Fe, Co, and Ni. Equimolar and five non-equimolar HEPO electrocatalysts are studied for their OER electrocatalytic performance. In the five non-equimolar HEPOs, the concentration of one of the five transition metals is doubled in individual samples. The performances of all the HEPOs outperform the single perovskite oxides. The optimized La(CrMnFeCo2Ni)O3 HEPO exhibits an outstanding OER overpotential of 325 mV at a current density of 10 mA cm−2 and excellent electrochemical stability after 50 h of testing.",

author = "Nguyen, {Thi Xuyen} and Liao, {Yi Cheng} and Lin, {Chia Chun} and Su, {Yen Hsun} and Ting, {Jyh Ming}",

note = "Funding Information: This work has been supported by the Ministry of Science and Technology in Taiwan under Grant No. MOST 108‐2218‐E‐006‐023 and MOST 109‐2224‐E‐006‐007. Publisher Copyright: {\textcopyright} 2021 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH",

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doi = "10.1002/adfm.202101632",

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T1 - Advanced High Entropy Perovskite Oxide Electrocatalyst for Oxygen Evolution Reaction

AU - Nguyen, Thi Xuyen

AU - Liao, Yi Cheng

AU - Lin, Chia Chun

AU - Su, Yen Hsun

AU - Ting, Jyh Ming

N1 - Funding Information: This work has been supported by the Ministry of Science and Technology in Taiwan under Grant No. MOST 108‐2218‐E‐006‐023 and MOST 109‐2224‐E‐006‐007. Publisher Copyright: © 2021 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH

PY - 2021/7/2

Y1 - 2021/7/2

N2 - A new type of lanthanum-based high entropy perovskite oxide (HEPO) electrocatalyst for the oxygen evolution reaction is reported. The B-site lattices in the HEPO consist of five consecutive first-row transition metals, including Cr, Mn, Fe, Co, and Ni. Equimolar and five non-equimolar HEPO electrocatalysts are studied for their OER electrocatalytic performance. In the five non-equimolar HEPOs, the concentration of one of the five transition metals is doubled in individual samples. The performances of all the HEPOs outperform the single perovskite oxides. The optimized La(CrMnFeCo2Ni)O3 HEPO exhibits an outstanding OER overpotential of 325 mV at a current density of 10 mA cm−2 and excellent electrochemical stability after 50 h of testing.

AB - A new type of lanthanum-based high entropy perovskite oxide (HEPO) electrocatalyst for the oxygen evolution reaction is reported. The B-site lattices in the HEPO consist of five consecutive first-row transition metals, including Cr, Mn, Fe, Co, and Ni. Equimolar and five non-equimolar HEPO electrocatalysts are studied for their OER electrocatalytic performance. In the five non-equimolar HEPOs, the concentration of one of the five transition metals is doubled in individual samples. The performances of all the HEPOs outperform the single perovskite oxides. The optimized La(CrMnFeCo2Ni)O3 HEPO exhibits an outstanding OER overpotential of 325 mV at a current density of 10 mA cm−2 and excellent electrochemical stability after 50 h of testing.

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ER -

Advanced High Entropy Perovskite Oxide Electrocatalyst for Oxygen Evolution Reaction

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