High-performance metal-organic framework-perovskite hybrid as an important component of the air-electrode for rechargeable Zn-Air battery
Article
Article Title | High-performance metal-organic framework-perovskite hybrid as an important component of the air-electrode for rechargeable Zn-Air battery |
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ERA Journal ID | 1470 |
Article Category | Article |
Authors | Wang, Xixi (Author), Ge, Lei (Author), Lu, Qian (Author), Dai, Jie (Author), Guan, Daqin (Author), Ran, Ran (Author), Weng, Shih-Chang (Author), Hu, Zhiwei (Author), Zhou, Wei (Author) and Shao, Zongping (Author) |
Journal Title | Journal of Power Sources |
Journal Citation | 468, pp. 1-11 |
Article Number | 228377 |
Number of Pages | 11 |
Year | 2020 |
Publisher | Elsevier |
Place of Publication | Switzerland |
ISSN | 0378-7753 |
1873-2755 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jpowsour.2020.228377 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0378775320306819 |
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. |
Keywords | In-situ growth; Interface; Multi-active sites; Perovskite; Metal-organic frameworks; Rechargeable Zn-Air battery |
ANZSRC Field of Research 2020 | 340604. Electrochemistry |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Nanjing Tech University, China |
Centre for Future Materials | |
Nanjing University of Technology, China | |
National Synchrotron Radiation Research Center, Taiwan | |
Max Planck Society, Germany | |
Curtin University |
https://research.usq.edu.au/item/q5v8x/high-performance-metal-organic-framework-perovskite-hybrid-as-an-important-component-of-the-air-electrode-for-rechargeable-zn-air-battery
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