A Glass-Ceramic with Accelerated Surface Reconstruction toward the Efficient Oxygen Evolution Reaction. - 文章详情页

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The　effective　non-precious　metal　catalysts　toward　the　oxygen　evolution　reaction　(OER)　are　highly　desirable　for　electrochemical　water　splitting.　Herein,　we　prepare　a　novel　glass-ceramic　(Ni1.5　Sn@triMPO4　)　by　embedding　crystalline　Ni1.5　Sn　nanoparticles　into　amorphous　trimetallic　phosphate　(triMPO4　)　matrix.　This　unique　crystalline-amorphous　nanostructure　synergistically　accelerates　the　surface　reconstruction　to　active　Ni(Fe)OOH,　due　to　the　low　vacancy　formation　energy　of　Sn　in　glass-ceramic　and　high　adsorption　energy　of　PO43-　at　the　VO　sites.　Compared　to　the　control　samples,　this　dual-phase　glass-ceramic　exhibits　a　remarkably　lowered　overpotential　and　boosted　OER　kinetics　after　surface　reconstruction,　rivaling　most　of　state-of-the-art　electrocatalysts.　The　residual　PO43-　and　intrinsic　VO　sites　induce　redistribution　of　electron　states,　thus　optimizing　the　adsorption　of　OH*　and　OOH*　intermediates　on　metal　oxyhydroxides　and　promoting　the　OER　activity.

关键词：

glass-ceramic electrocatalysis surface reconstruction oxygen evolution reaction DFT calculations

作者机构：

[ 1 ] [Li Shanlin]The State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
[ 2 ] [Li Zichuang]The State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
[ 3 ] [Ma Ruguang]The State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
[ 4 ] [Gao Chunlang]Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Liu Linlin]Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Hu Lanping]College of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
[ 7 ] [Zhu Jinlin]College of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
[ 8 ] [Sun Tongming]College of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
[ 9 ] [Tang Yanfeng]College of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
[ 10 ] [Liu Danmin]Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
[ 11 ] [Wang Jiacheng]The State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China

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