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  High-Index Faceted RuCo Nanoscrews for Water Electrosplitting

Zhu, T., Huang, J., Huang, B., Zhang, N., Liu, S., Yao, Q., et al. (2020). High-Index Faceted RuCo Nanoscrews for Water Electrosplitting. Advanced Energy Materials, 2002860, pp. 1-10. doi:10.1002/aenm.202002860.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-7C9A-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-7C9D-E
Genre: Journal Article

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 Creators:
Zhu, Ting1, Author
Huang, Ju1, Author
Huang, Bolong1, Author
Zhang, Nan1, Author
Liu, Shangheng1, Author
Yao, Qing1, Author
Haw, Shu-Chih1, Author
Chang, Yu-Chung1, Author
Pao, Chih-Wen1, Author
Chen, Jin-Ming1, Author
Shao, Qi1, Author
Hu, Zhiwei2, Author              
Ma, Yanhang1, Author
Huang, Xiaoqing1, 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: Shape control has realized huge success for developing efficient Pd/Pt-based nanocatalysts, but the control of Ru-based nanocrystals remains a formidable challenge due to the inherent anisotropy in hexagonal closed-packed nanocrystals. Herein, a class of unique RuCo nanoscrews (NSs) for water electrosplitting is successfully synthesized with rough surfaces and the exposure of steps and edges. Those high-index faceted RuCo NSs show superior performance for overall water electrosplitting, where a low cell voltage of 1.524 V (@ 10 mA cm(-2)) and excellent stability for more than 20 h (@ 10 mA cm(-2)) for overall water electrosplitting in 1 m KOH is achieved. The enhanced performance of RuCo NSs is due to the optimization of the binding energy with the intermediate species and the reduced energy barrier of water dissociation. Density functional theory calculations reveal that the RuCo NS structure intrinsically endows various ridges and edges, which create low coordinated Ru- and Co-sites. These active Ru- and Co-sites present high efficiencies in electronic exchange and transfer between adsorbing O species and nearby lattice sites, guaranteeing the high H2O-splitting activities. This present work opens up a new strategy for creating high-performance electrocatalysts for water splitting.

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Language(s): eng - English
 Dates: 2020-11-032020-11-03
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/aenm.202002860
 Degree: -

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Title: Advanced Energy Materials
  Abbreviation : Adv. Energy Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: - Sequence Number: 2002860 Start / End Page: 1 - 10 Identifier: ISSN: 1614-6832
CoNE: https://pure.mpg.de/cone/journals/resource/1614-6832