Bifunctional air electrodes for flexible rechargeable Zn-air batteries |
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Authors: | Xiaoling Lang Zhibiao Hu Caiyun Wang |
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Institution: | 1. Fujian Provincial Key Laboratory of Clean Energy Materials, Longyan University, Longyan 364000, China;2. ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, North Wollongong, NSW 2500, Australia |
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Abstract: | Flexible rechargeable Zn-air batteries are considered as one of the most promising battery systems to drive flexible and wearable electronic devices owing to their high safety,high gravimetric energy density,low self-discharge and low cost.One of the key challenges is to develop air electrodes with high performance and high mechanical flexibility.This minireview discusses the recent progress in the design and fabrication of flexible air electrodes.It focuses on the latest innovations in bifunctional oxygen reduction reaction and oxygen evolution reaction electrocatalysts,mainly including carbon-based materials(e.g.,heteroatom-doped carbon,metal-nitrogen moieties doped carbon),metal oxides(e.g.,spinel oxides,perovskite oxides) and their composites.It aims to provide an insight into the structureproperty relationship of bifunctional catalysts.We also discuss the challenges and future perspectives. |
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Keywords: | Zn-air batteries Flexible air electrodes Bifunctional catalysts Carbon materials Metal oxides |
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