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 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-composi...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Wiley - V C H Verlag GmbH & Co. KGaA
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/71649 |
| _version_ | 1848762535912669184 |
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| author | Chen, G. Hu, Z. Zhu, Y. Gu, B. Zhong, Y. Lin, H. Chen, C. Zhou, W. Shao, Zongping |
| author_facet | Chen, G. Hu, Z. Zhu, Y. Gu, B. Zhong, Y. Lin, H. Chen, C. Zhou, W. Shao, Zongping |
| author_sort | Chen, G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 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-d (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. |
| first_indexed | 2025-11-14T10:49:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-71649 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:49:07Z |
| publishDate | 2018 |
| publisher | Wiley - V C H Verlag GmbH & Co. KGaA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-716492018-12-13T09:32:28Z 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. Chen, C. Zhou, W. Shao, Zongping © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 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-d (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. 2018 Journal Article http://hdl.handle.net/20.500.11937/71649 10.1002/adma.201804333 Wiley - V C H Verlag GmbH & Co. KGaA restricted |
| spellingShingle | Chen, G. Hu, Z. Zhu, Y. Gu, B. Zhong, Y. Lin, H. Chen, C. Zhou, W. Shao, Zongping A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors |
| title | A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors |
| title_full | A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors |
| title_fullStr | A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors |
| title_full_unstemmed | A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors |
| title_short | A Universal Strategy to Design Superior Water-Splitting Electrocatalysts Based on Fast In Situ Reconstruction of Amorphous Nanofilm Precursors |
| title_sort | universal strategy to design superior water-splitting electrocatalysts based on fast in situ reconstruction of amorphous nanofilm precursors |
| url | http://hdl.handle.net/20.500.11937/71649 |