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Jin J, Yin J, Hu Y, Zheng Y, Liu H, Wang X, Xi P, Yan CH. Stabilizing Sulfur Sites in Tetraoxygen Tetrahedral Coordination Structure for Efficient Electrochemical Water Oxidation. Angew Chem Int Ed Engl 2024; 63:e202313185. [PMID: 38059914 DOI: 10.1002/anie.202313185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/22/2023] [Accepted: 12/04/2023] [Indexed: 12/08/2023]
Abstract
Ion regulation strategy is regarded as a promising pathway for designing transition metal oxide-based electrocatalysts for oxygen evolution reaction (OER) with improved activity and stability. Precise anion conditioning can accurately change the anionic environment so that the acid radical ions (SO4 2- , PO3 2- , SeO4 2- , etc.), regardless of their state (inside the catalyst, on the catalyst surface, or in the electrolyte), can optimize the electronic structure of the cationic active site and further increase the catalytic activity. Herein, we report a new approach to encapsulate S atoms at the tetrahedral sites of the NaCl-type oxide NiO to form a tetraoxo-tetrahedral coordination structure (S-O4 ) inside the NiO (S-NiO -I). Density functional theory (DFT) calculations and operando vibrational spectroscopy proves that this kind of unique structure could achieve the S-O4 and Ni-S stable structure in S-NiO-I. Combining mass spectroscopy characterization, it could be confirmed that the S-O4 structure is the key factor for triggering the lattice oxygen exchange to participate in the OER process. This work demonstrates that the formation of tetraoxygen tetrahedral structure is a generalized key for boosting the OER performances of transition metal oxides.
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Affiliation(s)
- Jing Jin
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Frontiers Science Centre for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China
| | - Jie Yin
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Frontiers Science Centre for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China
| | - Yang Hu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Frontiers Science Centre for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China
| | - Yao Zheng
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Hongbo Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Frontiers Science Centre for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China
| | - Xinyao Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Frontiers Science Centre for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China
| | - Pinxian Xi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Frontiers Science Centre for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China
| | - Chun-Hua Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Frontiers Science Centre for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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