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  High-performance metal-organic framework-perovskite hybrid as an important component of the air-electrode for rechargeable Zn-Air battery

Wang, X., Ge, L., Lu, Q., Dai, J., Guan, D., Ran, R., et al. (2020). High-performance metal-organic framework-perovskite hybrid as an important component of the air-electrode for rechargeable Zn-Air battery. Journal of Power Sources, 468: 228377, pp. 1-11. doi:10.1016/j.jpowsour.2020.228377.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-89C7-F Version Permalink: http://hdl.handle.net/21.11116/0000-0006-89CB-B
Genre: Journal Article

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 Creators:
Wang, Xixi1, Author
Ge, Lei1, Author
Lu, Qian1, Author
Dai, Jie1, Author
Guan, Daqin1, Author
Ran, Ran1, Author
Weng, Shih-Chang1, Author
Hu, Zhiwei2, 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: In-situ growth, Interface, Metal-organic frameworks, Multi-active sites, Perovskite, Rechargeable Zn-Air battery, Catalysts, Cobalt, Electrodes, Gas adsorption, Lanthanum compounds, Metal-Organic Frameworks, Organometallics, Oxygen, Oxygen evolution reaction, Perovskite, Strategic planning, Charge potentials, Co-ordinatively unsaturated, Cobalt extraction, Cycling stability, Electrochemical catalyst, Optimal samples, Oxygen adsorption, Oxygen evolution reaction (oer), Zinc air batteries
 Abstract: Constructing catalysts with a low overpotential for the oxygen evolution reaction (OER) is critical for the increased application of rechargeable Zn-air batteries. Herein, an in-situ cobalt extraction and simultaneous coordination growth strategy is adopted to develop an active and robust interface between nanostructural Co-metal-organic framework (Co-MOF) pillars and perovskite LaCoO3-δ (LC). Moreover, the multi-active cobalt sites, including Co3+ in the LC and coordinatively unsaturated cobalt sites in the Co-MOF, could promote the deprotonation of oxygen adsorption intermediates and act as catalytic active centres. Therefore, the optimal sample exhibits excellent OER activity with a low overpotential of 330 mV. Notably, the Zn-air battery with Co-MOF/LC-0.5 as the OER catalyst exhibits a low charge potential of 2.03 V and excellent cycling stability. This work illustrates efficient electrochemical catalysts based on perovskites with low overpotentials that are prepared by an in-situ growth strategy, and have great potential in rechargeable Zn-air batteries. © 2020 Elsevier B.V.

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Language(s): eng - English
 Dates: 2020-05-302020-05-30
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.jpowsour.2020.228377
 Degree: -

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Title: Journal of Power Sources
  Abbreviation : J. Power Sources
Source Genre: Journal
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Publ. Info: Amsterdam, The Netherlands : Elsevier
Pages: - Volume / Issue: 468 Sequence Number: 228377 Start / End Page: 1 - 11 Identifier: ISSN: 0378-7753
CoNE: https://pure.mpg.de/cone/journals/resource/954925527849