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

Wang, Xixi and Ge, Lei ORCID: https://orcid.org/0000-0003-2989-0329 and Lu, Qian and Dai, Jie and Guan, Daqin and Ran, Ran and Weng, Shih-Chang and Hu, Zhiwei and Zhou, Wei and Shao, Zongping (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. ISSN 0378-7753


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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 05 Jan 2021 01:47
Last Modified: 19 Jan 2021 04:07
Uncontrolled Keywords: In-situ growth; Interface; Multi-active sites; Perovskite; Metal-organic frameworks; Rechargeable Zn-Air battery
Fields of Research (2008): 03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030604 Electrochemistry
09 Engineering > 0904 Chemical Engineering > 090402 Catalytic Process Engineering
Fields of Research (2020): 34 CHEMICAL SCIENCES > 3406 Physical chemistry > 340604 Electrochemistry
Socio-Economic Objectives (2008): B Economic Development > 85 Energy > 8506 Energy Storage, Distribution and Supply > 850602 Energy Storage (excl. Hydrogen)
Socio-Economic Objectives (2020): 17 ENERGY > 1703 Energy storage, distribution and supply > 170304 Energy storage (excl. hydrogen and batteries)
Identification Number or DOI: https://doi.org/10.1016/j.jpowsour.2020.228377
URI: http://eprints.usq.edu.au/id/eprint/38719

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