Lei-Chao Meng, Hao Zhang, Le Kang, Yi Zhang, Neng-Fei Yu, Fan Zhang, Hui-Ling Du
{"title":"Robust and flexible 3D integrated FeNi@NHCFs air electrode for high-performance rechargeable zinc-air battery","authors":"Lei-Chao Meng, Hao Zhang, Le Kang, Yi Zhang, Neng-Fei Yu, Fan Zhang, Hui-Ling Du","doi":"10.1007/s12598-024-02815-5","DOIUrl":null,"url":null,"abstract":"<p>Designing bifunctional oxygen reduction/evolution (ORR/OER) catalysts with high activity, robust stability and low cost is the key to accelerating the commercialization of rechargeable zinc-air battery (RZAB). Here, we propose a template-assisted electrospinning strategy to in situ fabricate 3D fibers consisting of FeNi nanoparticles embedded into N-doped hollow porous carbon nanospheres (FeNi@NHCFs) as the stable binder-free integrated air cathode in RZAB. 3D interconnected conductive fiber networks provide fast electron transfer pathways and strengthen the mechanical flexibility. Meanwhile, N-doped hollow porous carbon nanospheres not only evenly confine FeNi nanoparticles to provide sufficient catalytic active sites, but also endow optimum mass transfer environment to reduce diffusion barrier. The RZABs assembled by FeNi@NHCFs as integrated air cathodes exhibit outstanding battery performance with high open-circuit voltage, large discharge specific capacity and power density, durable cyclic stability and great flexibility. Thus, this work brings a useful strategy to fabricate the integrated electrodes without using any polymeric binders for metal air batteries and other related fields.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":null,"pages":null},"PeriodicalIF":9.6000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12598-024-02815-5","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Designing bifunctional oxygen reduction/evolution (ORR/OER) catalysts with high activity, robust stability and low cost is the key to accelerating the commercialization of rechargeable zinc-air battery (RZAB). Here, we propose a template-assisted electrospinning strategy to in situ fabricate 3D fibers consisting of FeNi nanoparticles embedded into N-doped hollow porous carbon nanospheres (FeNi@NHCFs) as the stable binder-free integrated air cathode in RZAB. 3D interconnected conductive fiber networks provide fast electron transfer pathways and strengthen the mechanical flexibility. Meanwhile, N-doped hollow porous carbon nanospheres not only evenly confine FeNi nanoparticles to provide sufficient catalytic active sites, but also endow optimum mass transfer environment to reduce diffusion barrier. The RZABs assembled by FeNi@NHCFs as integrated air cathodes exhibit outstanding battery performance with high open-circuit voltage, large discharge specific capacity and power density, durable cyclic stability and great flexibility. Thus, this work brings a useful strategy to fabricate the integrated electrodes without using any polymeric binders for metal air batteries and other related fields.
期刊介绍:
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.