{"title":"多壁碳纳米管作为微型电缆提高锂氧电池的放电性能","authors":"Haoshen Huang, Huafeng Zhou, Nuowen Wu, Haiyang Yu, Weibo Gao, Jianghuan Shi, Jiahao Song, Yayun Zheng, Zhengfei Chen, Zixuan Liu","doi":"10.1002/celc.202400626","DOIUrl":null,"url":null,"abstract":"<p>A simple carbon black (Ketjenblack, KB)-multiwall carbon nanotubes (MWCNTs) composite was fabricated and used as the air cathode in a Li-O<sub>2</sub> battery where MWCNTs primarily serve as microscopic cables to enhance long-range electronic conductivity. With optimal KB:MWCNTs mass ratios, the composite exhibited significantly improved specific capacity (up to 10611 mAh/g<sub>carbon</sub> under 100 mAh/g<sub>carbon</sub>), rate capability (up to 9598 mAh/g<sub>carbon</sub> under 500 mAh/g<sub>carbon</sub>) and cyclability than pristine KB, owing to the synergy of KB's abundant surface area for accommodation of discharge products and MWCNTs’ long-range electronic conductivity to guide even and compact deposition of discharge products, and mitigate passivation/clogging of the air cathode surface during discharge. This strategy of using MWCNTs as microscopic cables could also be applied for other commercial materials to construct high-performance and low-cost air cathodes.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 8","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400626","citationCount":"0","resultStr":"{\"title\":\"Multiwall Carbon Nanotubes as Microscopic-Cables to Boost Discharge Performance of Li-O2 Batteries\",\"authors\":\"Haoshen Huang, Huafeng Zhou, Nuowen Wu, Haiyang Yu, Weibo Gao, Jianghuan Shi, Jiahao Song, Yayun Zheng, Zhengfei Chen, Zixuan Liu\",\"doi\":\"10.1002/celc.202400626\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A simple carbon black (Ketjenblack, KB)-multiwall carbon nanotubes (MWCNTs) composite was fabricated and used as the air cathode in a Li-O<sub>2</sub> battery where MWCNTs primarily serve as microscopic cables to enhance long-range electronic conductivity. With optimal KB:MWCNTs mass ratios, the composite exhibited significantly improved specific capacity (up to 10611 mAh/g<sub>carbon</sub> under 100 mAh/g<sub>carbon</sub>), rate capability (up to 9598 mAh/g<sub>carbon</sub> under 500 mAh/g<sub>carbon</sub>) and cyclability than pristine KB, owing to the synergy of KB's abundant surface area for accommodation of discharge products and MWCNTs’ long-range electronic conductivity to guide even and compact deposition of discharge products, and mitigate passivation/clogging of the air cathode surface during discharge. This strategy of using MWCNTs as microscopic cables could also be applied for other commercial materials to construct high-performance and low-cost air cathodes.</p>\",\"PeriodicalId\":142,\"journal\":{\"name\":\"ChemElectroChem\",\"volume\":\"12 8\",\"pages\":\"\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2025-02-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400626\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ChemElectroChem\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/celc.202400626\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemElectroChem","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/celc.202400626","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
Multiwall Carbon Nanotubes as Microscopic-Cables to Boost Discharge Performance of Li-O2 Batteries
A simple carbon black (Ketjenblack, KB)-multiwall carbon nanotubes (MWCNTs) composite was fabricated and used as the air cathode in a Li-O2 battery where MWCNTs primarily serve as microscopic cables to enhance long-range electronic conductivity. With optimal KB:MWCNTs mass ratios, the composite exhibited significantly improved specific capacity (up to 10611 mAh/gcarbon under 100 mAh/gcarbon), rate capability (up to 9598 mAh/gcarbon under 500 mAh/gcarbon) and cyclability than pristine KB, owing to the synergy of KB's abundant surface area for accommodation of discharge products and MWCNTs’ long-range electronic conductivity to guide even and compact deposition of discharge products, and mitigate passivation/clogging of the air cathode surface during discharge. This strategy of using MWCNTs as microscopic cables could also be applied for other commercial materials to construct high-performance and low-cost air cathodes.
期刊介绍：
ChemElectroChem is aimed to become a top-ranking electrochemistry journal for primary research papers and critical secondary information from authors across the world. The journal covers the entire scope of pure and applied electrochemistry, the latter encompassing (among others) energy applications, electrochemistry at interfaces (including surfaces), photoelectrochemistry and bioelectrochemistry.
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