B-Site Cation Ordered Double Perovskites as Efficient and Stable Electrocatalysts for Oxygen Evolution Reaction

Hainan Sun; Gao Chen; Yinlong Zhu; Bo Liu; Wei Zhou; Zongping Shao

doi:10.1002/chem.201700507

B-Site Cation Ordered Double Perovskites as Efficient and Stable Electrocatalysts for Oxygen Evolution Reaction

Hainan Sun, Gao Chen, Yinlong Zhu, Bo Liu, Wei Zhou, Zongping Shao

化工学院

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70 引用（Scopus）

摘要

Simple disordered perovskite oxides have been intensively exploited as promising electrocatalysts for the oxygen evolution reaction (OER) towards their application in water splitting, reversible fuel cells, and rechargeable metal-air batteries. Here, the B-site cation-ordered double perovskites Ba₂Bi_xSc_0.2Co_1.8−xO_6−δ, with two types of cobalt local environments, are demonstrated to be superior electrocatalysts for OER in alkaline solution, demonstrating ultrahigh catalytic activity. In addition, no obvious performance degradation is observed for the Ba₂Bi_0.1Sc_0.2Co_1.7O_6−δ sample after a continuous chronopotentiometry test. The critical role of the ordered [Co²⁺] and [Sc³⁺, Bi⁵⁺, Co³⁺] dual environments in improving OER activity is exhibited. These results indicate that B-site cation-ordered double perovskite oxides may represent a new class of promising electrocatalysts for the OER in sustainable energy storage and conversion systems.

源语言	英语
页（从-至）	5722-5728
页数	7
期刊	Chemistry - A European Journal
卷	23
期	24
DOI	https://doi.org/10.1002/chem.201700507
出版状态	已出版 - 27 4月 2017

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title = "B-Site Cation Ordered Double Perovskites as Efficient and Stable Electrocatalysts for Oxygen Evolution Reaction",

abstract = "Simple disordered perovskite oxides have been intensively exploited as promising electrocatalysts for the oxygen evolution reaction (OER) towards their application in water splitting, reversible fuel cells, and rechargeable metal-air batteries. Here, the B-site cation-ordered double perovskites Ba2BixSc0.2Co1.8−xO6−δ, with two types of cobalt local environments, are demonstrated to be superior electrocatalysts for OER in alkaline solution, demonstrating ultrahigh catalytic activity. In addition, no obvious performance degradation is observed for the Ba2Bi0.1Sc0.2Co1.7O6−δ sample after a continuous chronopotentiometry test. The critical role of the ordered [Co2+] and [Sc3+, Bi5+, Co3+] dual environments in improving OER activity is exhibited. These results indicate that B-site cation-ordered double perovskite oxides may represent a new class of promising electrocatalysts for the OER in sustainable energy storage and conversion systems.",

keywords = "alkaline media, cation order, double perovskite, electrochemistry, oxygen evolution reaction, water splitting",

author = "Hainan Sun and Gao Chen and Yinlong Zhu and Bo Liu and Wei Zhou and Zongping Shao",

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T1 - B-Site Cation Ordered Double Perovskites as Efficient and Stable Electrocatalysts for Oxygen Evolution Reaction

AU - Sun, Hainan

AU - Chen, Gao

AU - Zhu, Yinlong

AU - Liu, Bo

AU - Zhou, Wei

AU - Shao, Zongping

PY - 2017/4/27

Y1 - 2017/4/27

N2 - Simple disordered perovskite oxides have been intensively exploited as promising electrocatalysts for the oxygen evolution reaction (OER) towards their application in water splitting, reversible fuel cells, and rechargeable metal-air batteries. Here, the B-site cation-ordered double perovskites Ba2BixSc0.2Co1.8−xO6−δ, with two types of cobalt local environments, are demonstrated to be superior electrocatalysts for OER in alkaline solution, demonstrating ultrahigh catalytic activity. In addition, no obvious performance degradation is observed for the Ba2Bi0.1Sc0.2Co1.7O6−δ sample after a continuous chronopotentiometry test. The critical role of the ordered [Co2+] and [Sc3+, Bi5+, Co3+] dual environments in improving OER activity is exhibited. These results indicate that B-site cation-ordered double perovskite oxides may represent a new class of promising electrocatalysts for the OER in sustainable energy storage and conversion systems.

AB - Simple disordered perovskite oxides have been intensively exploited as promising electrocatalysts for the oxygen evolution reaction (OER) towards their application in water splitting, reversible fuel cells, and rechargeable metal-air batteries. Here, the B-site cation-ordered double perovskites Ba2BixSc0.2Co1.8−xO6−δ, with two types of cobalt local environments, are demonstrated to be superior electrocatalysts for OER in alkaline solution, demonstrating ultrahigh catalytic activity. In addition, no obvious performance degradation is observed for the Ba2Bi0.1Sc0.2Co1.7O6−δ sample after a continuous chronopotentiometry test. The critical role of the ordered [Co2+] and [Sc3+, Bi5+, Co3+] dual environments in improving OER activity is exhibited. These results indicate that B-site cation-ordered double perovskite oxides may represent a new class of promising electrocatalysts for the OER in sustainable energy storage and conversion systems.

KW - alkaline media

KW - cation order

KW - double perovskite

KW - electrochemistry

KW - oxygen evolution reaction

KW - water splitting

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B-Site Cation Ordered Double Perovskites as Efficient and Stable Electrocatalysts for Oxygen Evolution Reaction

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