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Dai J, Zhu Y, Yin Y, Tahini HA, Guan D, Dong F, Lu Q, Smith SC, Zhang X, Wang H, Zhou W, Shao Z. Super-Exchange Interaction Induced Overall Optimization in Ferromagnetic Perovskite Oxides Enables Ultrafast Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903120. [PMID: 31402592 DOI: 10.1002/smll.201903120] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/24/2019] [Indexed: 06/10/2023]
Abstract
Oxygen evolution reaction (OER) is crucial in many renewable electrochemical technologies including regenerative fuel cells, rechargeable metal-air batteries, and water splitting. It is found that abundant active sites with favorable electronic structure and high electrical conductivity play a dominant role in achieving high electrocatalytic efficiency of perovskites, thus efficient strategies need to be designed to generate multiple beneficial factors for OER. Here, highlighted is an unusual super-exchange effect in ferromagnetic perovskite oxide to optimize active sites and enhance electrical conductivity. A systematic exploration about the composition-dependent OER activity in SrCo1 x Rux O3- δ (denoted as SCRx) (x = 0.0-1.0) perovskite is displayed with special attention on the role of super-exchange interaction between high spin (HS) Co3+ and Ru5+ ions. Induced by the unique Co3+ -O-Ru5+ super-exchange interactions, the SCR0.1 is endowed with abundant OER active species including Co3+ /Co4+ , Ru5+ , and O2 2- /O- , high electrical conductivity, and metal-oxygen covalency. Benefiting from these advantageous factors for OER electrocatalysis, the optimized SCR0.1 catalyst exhibits a remarkable activity with a low overpotential of 360 mV at 10 mA cm-2 , which exceeds the benchmark RuO2 and most well-known perovskite oxides reported so far, while maintaining excellent durability. This work provides a new pathway in developing perovskite catalysts for efficient catalysis.
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Affiliation(s)
- Jie Dai
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
| | - Yinlong Zhu
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Yichun Yin
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Hassan A Tahini
- Department of Applied Mathematics, Research School of Physics and Engineering, Australian National University, Canberra, 2601, Australia
| | - Daqin Guan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
| | - Feifei Dong
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, 510006, P. R. China
| | - Qian Lu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
| | - Sean C Smith
- Department of Applied Mathematics, Research School of Physics and Engineering, Australian National University, Canberra, 2601, Australia
| | - Xiwang Zhang
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Huanting Wang
- Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia
| | - Wei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
| | - Zongping Shao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
- Department of Chemical Engineering, Curtin University, Perth, Western Australia, 6845, Australia
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Zhu Y, Zhou W, Chen ZG, Chen Y, Su C, Tadé MO, Shao Z. SrNb0.1Co0.7Fe0.2O3−δPerovskite as a Next-Generation Electrocatalyst for Oxygen Evolution in Alkaline Solution. Angew Chem Int Ed Engl 2015; 54:3897-901. [DOI: 10.1002/anie.201408998] [Citation(s) in RCA: 359] [Impact Index Per Article: 39.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 12/20/2014] [Indexed: 11/09/2022]
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Zhu Y, Zhou W, Chen ZG, Chen Y, Su C, Tadé MO, Shao Z. SrNb0.1Co0.7Fe0.2O3−δPerovskite as a Next-Generation Electrocatalyst for Oxygen Evolution in Alkaline Solution. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201408998] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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