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Facile carbon cloth activation strategy to boost oxygen reduction reaction performance for flexible zinc-air battery application

引用

Carbon Energy 2022年第5期4卷 762-775页

作者： Revanasiddappa Manjunatha Jingchao Yuan Li Hongwei Shu-Qi Deng Ejikeme R.Ezeigwe Yinze Zuo Li Dong Aijun Li Wei Yan Fangzhou Zhang Jiujun Zhang Institute for Sustainable Energy College of SciencesShanghai UniversityShanghaiChina Research Center for Composite Materials Shanghai UniversityShanghaiChina Zhaoqing Leoch Battery Technology Co.Ltd. Guangdong ProvinceChina College of Materials Science and Engineering Fuzhou UniversityFuzhouChina

Flexible and all-solid-state zinc-air batteries(ZABs)are highly useful and also in demand due to their theoretical high energy densities and special *** limitation in their performance arises due to their catalyst-coated cathode electrodes in terms of catalytic activity and stability as well as *** this paper,a novel and environmentally friendly activation strategy is developed to activate the carbon cloth(CC)for the *** activated CC serves as a catalyst-free air cathode with high conductivity,excellent mechanical strength,and flexibility,in addition to low *** strategy is performed by simply electro-oxidizing and electroreducing CC under ultrahigh direct current(DC)voltage in a diluted NH4Cl aqueous *** is found that the electro-oxidation not only results in the formation of a graphene-like exfoliated carbon layer on the surface of CC but also induces the incorporation of oxygen-containing groups and doping of nitrogen and chloride *** the electroreduction,theπ-conjugated carbon network of CC is partially restored,leading to the recovery of *** an electroactivated CC shows excellent oxygen reduction reaction *** aqueous flexibility and all-solid-state ZABs are assembled using such an electroactivated CC cathode without any catalyst *** ZABs can achieve good durability and deliver high peak power density and an energy density as high as 690 Wh kg^(−1),demonstrating the excellent potential of this electroactivated CC in practical devices.

关键词： carbon cloth,catalyst-free electroactivation nitrogen and chlorine co-doping oxygencontaining groups ultrahigh and ultralow direct current voltage

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