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

Chen, G., Hu, Z., Zhu, Y., Gu, B., Zhong, Y., Lin, H.-J., et al. (2018). A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors. Advanced Materials, 1804333, pp. 1-8. doi:10.1002/adma.201804333.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-4F05-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-5945-D
Genre: Journal Article

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 Creators:
Chen, Gao1, Author
Hu, Zhiwei2, Author              
Zhu, Yanping1, Author
Gu, Binbin1, Author
Zhong, Yijun1, Author
Lin, Hong-Ji1, Author
Chen, Chien-Te1, Author
Zhou, Wei1, Author
Shao, Zongping1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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Free keywords: perovskites, plasma, surface reconstruction, water splitting
 Abstract: Abstract 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 SrCo0.85Fe0.1P0.05O3?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.

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Language(s): eng - English
 Dates: 2018-09-012018-09-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1002/adma.201804333
 Degree: -

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Title: Advanced Materials
  Alternative Title : Adv. Mater.
Source Genre: Journal
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Publ. Info: Wiley-Blackwell
Pages: - Volume / Issue: - Sequence Number: 1804333 Start / End Page: 1 - 8 Identifier: ISBN: 0935-9648