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  Molten-salt synthesis of porous La0.6Sr0.4Co0.2Fe0.8O2.9 perovskite as an efficient electrocatalyst for oxygen evolution

Song, S., Zhou, J., Zhang, S., Zhang, L., Li, J., Wang, Y., et al. (2018). Molten-salt synthesis of porous La0.6Sr0.4Co0.2Fe0.8O2.9 perovskite as an efficient electrocatalyst for oxygen evolution. Nano Research, 11(9), 4796-4805. doi:10.1007/s12274-018-2065-1.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-5BFF-B Version Permalink: http://hdl.handle.net/21.11116/0000-0002-505B-E
Genre: Journal Article

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 Creators:
Song, Sanzhao1, Author
Zhou, Jing1, Author
Zhang, Shuo1, Author
Zhang, Linjuan1, Author
Li, Jiong1, Author
Wang, Yu1, Author
Han, Ling1, Author
Long, Youwen1, Author
Hu, Zhiwei2, Author              
Wang, Jian-Qiang1, 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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 Abstract: The development of an efficient and low-cost electrocatalyst for the oxygen evolution reaction (OER) via an eco-efficient route is a desirable, although challenging, outcome for overall water splitting. Herein, an iron-rich La0.6Sr0.4Co0.2Fe0.8O2.9 (LSCF28) perovskite with an open porous topographic structure was developed as an electrocatalyst by a straightforward molten-salt synthesis approach. It was found that porosity correlates with both the iron content and the molten-salt approach. Benefiting from the large surface area, high activity of the porous internal surface, and the optimal electronic configuration of redox sites, this inexpensive material exhibits high performance with a large mass activity of 40.8 A·g–1 at a low overpotential of 0.345 V in 0.1 M KOH, surpassing the state-of-the-art precious metal IrO2 catalyst and other well-known perovskites, such as Ba0.5Sr0.5Co0.8Fe0.2O3 and SrCoO2.7. Our work illustrates that the moltensalt method is an effective route to generate porous structures in perovskite oxides, which is important for energy conversion and storage devices.

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Language(s): eng - English
 Dates: 2018-04-202018-04-20
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1007/s12274-018-2065-1
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Title: Nano Research
Source Genre: Journal
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Publ. Info: Beijing, China : Tsinghua University Press
Pages: - Volume / Issue: 11 (9) Sequence Number: - Start / End Page: 4796 - 4805 Identifier: ISSN: 1998-0124
CoNE: /journals/resource/1998-0124