Tailoring Ion Ordering in Perovskite Oxide for High-Temperature Oxygen Evolution Reaction

Qingxue Liu; Feiran Shen; Guohui Song; Tianfu Liu; Weicheng Feng; Rongtan Li; Xiaomin Zhang; Mingrun Li; Lunhua He; Xu Zheng; Shuaishuai Yin; Guangzhi Yin; Yuefeng Song; Guoxiong Wang; Xinhe Bao

doi:10.1002/anie.202307057

Tailoring Ion Ordering in Perovskite Oxide for High-Temperature Oxygen Evolution Reaction

Angew Chem Int Ed Engl. 2023 Aug 7;62(32):e202307057. doi: 10.1002/anie.202307057. Epub 2023 Jun 27.

Authors

Qingxue Liu^{1

2}, Feiran Shen^{3

4}, Guohui Song^{1

5}, Tianfu Liu¹, Weicheng Feng^{1

2}, Rongtan Li^{1

2}, Xiaomin Zhang¹, Mingrun Li¹, Lunhua He^{3

6

7}, Xu Zheng⁸, Shuaishuai Yin⁸, Guangzhi Yin⁸, Yuefeng Song¹, Guoxiong Wang¹, Xinhe Bao¹

Affiliations

¹ State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
² College of Energy, University of Chinese Academy of Sciences, Beijing, 100039, China.
³ Spallation Neutron Source Science Center, Dongguan, 523803, China.
⁴ Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
⁵ College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028, China.
⁶ Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
⁷ Songshan Lake Materials Laboratory, Dongguan, 523808, China.
⁸ Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201800, China.

PMID: 37285520
DOI: 10.1002/anie.202307057

Abstract

Perovskites exhibit excellent high-temperature oxygen evolution reaction (OER) activities as the anodes of solid oxide electrolysis cells (SOECs). However, the relationship between ion ordering and OER performances is rarely investigated. Herein, a series of PrBaCo_2-x Fe_x O_5+δ perovskites with tailored ion orderings are constructed. Physicochemical characterizations and density functional theory calculations confirm that the oxygen bulk migration and surface transport capacities as well as the OER activities are promoted by the A-site cation ordering, but weakened by the oxygen vacancy ordering. Hence, SOEC with the A-site-ordered and oxygen-vacancy-disordered PrBaCo₂ O_5+δ anode exhibits the highest performance of 3.40 A cm^-2 at 800 °C and 2.0 V. This work sheds light on the critical role of ion orderings in the high-temperature OER performance and paves a new way for screening novel anode materials of SOECs.

Keywords: Electrochemistry; Ion Ordering; Oxygen Evolution Reaction; Perovskite Phase; Solid Oxide Electrolysis Cell.

Abstract

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