A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 43 vom: 30. Okt., Seite e1804333
1. Verfasser: Chen, Gao (VerfasserIn)
Weitere Verfasser: Hu, Zhiwei, Zhu, Yanping, Gu, Binbin, Zhong, Yijun, Lin, Hong-Ji, Chen, Chien-Te, Zhou, Wei, Shao, Zongping
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article perovskites plasma surface reconstruction water splitting
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520 |a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. 
520 |a The development of efficient bifunctional electrodes with extraordinary mass activity and robust stability is an eternal yet challenging goal for the water-splitting process. Surface reconstruction during electrocatalysis can form fresh-composition electrocatalysts with unusual amorphous phases in situ, which are more active but difficult to prepare by conventional methods. Here, a facile strategy based on fast reconstruction of amorphous nanofilm precursors is proposed for exploring precious-metal-free catalysts with good electronic conductivity, ultrahigh activity, and robust stability. As a proof of concept, an amorphous SrCo0.85 Fe0.1 P0.05 O3- δ (SCFP) nanofilm precursor with weak chemical bonds deposited onto a conductive nickel foam (NF) substrate (SCFP-NF) is synthesized by utilizing a high-energy argon plasma to break the strong chemical bonds in a crystalline SCFP target. The quickly reconstructed SCFP-NF bifunctional catalysts show ultrahigh mass activity of up to 1000 mA mg-1 at an overpotential of 550 mV and extremely long operational stability of up to 650 h at 10 mA cm-2 , significantly overperforming state-of-the-art precious-metal catalysts. Such a strategy is further demonstrated to be a universal method, which can be applied to accelerate the reconstruction of other material systems to obtain various efficient electrocatalysts 
650 4 |a Journal Article 
650 4 |a perovskites 
650 4 |a plasma 
650 4 |a surface reconstruction 
650 4 |a water splitting 
700 1 |a Hu, Zhiwei  |e verfasserin  |4 aut 
700 1 |a Zhu, Yanping  |e verfasserin  |4 aut 
700 1 |a Gu, Binbin  |e verfasserin  |4 aut 
700 1 |a Zhong, Yijun  |e verfasserin  |4 aut 
700 1 |a Lin, Hong-Ji  |e verfasserin  |4 aut 
700 1 |a Chen, Chien-Te  |e verfasserin  |4 aut 
700 1 |a Zhou, Wei  |e verfasserin  |4 aut 
700 1 |a Shao, Zongping  |e verfasserin  |4 aut 
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773 1 8 |g volume:30  |g year:2018  |g number:43  |g day:30  |g month:10  |g pages:e1804333 
856 4 0 |u http://dx.doi.org/10.1002/adma.201804333  |3 Volltext 
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