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

研究成果: Article › 同行評審

332 引文斯高帕斯（Scopus）

摘要

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.

原文	English
文章編號	2101632
期刊	Advanced Functional Materials
卷	31
發行號	27
DOIs	https://doi.org/10.1002/adfm.202101632
出版狀態	Published - 2021 7月 2

All Science Journal Classification (ASJC) codes

一般化學
一般材料科學
凝聚態物理學

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10.1002/adfm.202101632

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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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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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Advanced High Entropy Perovskite Oxide Electrocatalyst for Oxygen Evolution Reaction

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