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  Combined Corner-Sharing and Edge-Sharing Networks in Hybrid Nanocomposite with Unusual Lattice-Oxygen Activation for Efficient Water Oxidation

Zhang, H., Gao, Y., Xu, H., Guan, D., Hu, Z., Jing, C., et al. (2022). Combined Corner-Sharing and Edge-Sharing Networks in Hybrid Nanocomposite with Unusual Lattice-Oxygen Activation for Efficient Water Oxidation. Advanced Functional Materials, 2207618, pp. 1-13. doi:10.1002/adfm.202207618.

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 Creators:
Zhang, Haijuan1, Author
Gao, Yongxin1, Author
Xu, Hengyue1, Author
Guan, Daqin1, Author
Hu, Zhiwei2, Author           
Jing, Chao1, Author
Sha, Yuchen1, Author
Gu, Yuxing1, Author
Huang, Yu-Cheng1, Author
Chang, Yu-Chung1, Author
Pao, Chi-Wen1, Author
Xu, Xiaomin1, Author
Lee, Jyh-Fu1, Author
Chin, Yi-Ying1, Author
Lin, Hong-Ji1, Author
Chen, Chien-Te1, Author
Chen, Yuhui1, Author
Guo, Youmin1, Author
Ni, Meng1, Author
Zhou, Wei1, Author
Shao, Zongping1, Author more..
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: Corner-sharing and edge-sharing networks are the two most important material genomes. Inspired by the efficient electron transport capacity of corner-sharing structures and the low steric hindrance of edge-sharing units, an attempt is made to exert both merits by combining these two networks. Here, a unique self-assembled hybrid SrCo0.55Fe0.5O3-delta nanorod composed of a corner-sharing SrCo0.5Fe0.5O3-delta phase and edge-sharing Co3O4 structure is synthesized through a Co-site enrichment method, which exhibits the low overpotentials of 310 and 290 mV at 10 mA cm(-2) for oxygen-evolving reaction in 0.1 m and 1.0 m KOH, respectively. This efficiency is attributed to the high Co valence with strong Co-O covalence and the short distance between Co-Co/Fe metal active sites in hybrid nanorods, realizing a synergistic benefit. Combined multiple operando/ex situ characterizations and computational studies show that the edge-sharing units in hybrid nanorods can help facilitate the deprotonation step of lattice oxygen mechanism (LOM) while the corner-sharing motifs can accelerate the electron transport during LOM processes, triggering an unusual lattice-oxygen activation. This methodology of combining important material structural genomes can offer meaningful insights and guidance for various catalytic applications.

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Language(s): eng - English
 Dates: 2022-08-252022-08-25
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000844261100001
DOI: 10.1002/adfm.202207618
 Degree: -

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Title: Advanced Functional Materials
  Abbreviation : Adv. Funct. Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH Verlag GmbH
Pages: - Volume / Issue: - Sequence Number: 2207618 Start / End Page: 1 - 13 Identifier: ISSN: 1616-301X
CoNE: https://pure.mpg.de/cone/journals/resource/954925596563