VN和SeS嵌入的多孔碳纳米纤维薄膜作为用于改进锂-硒硫电池的独立电极。
VN and SeS embedded porous carbon-nanofiber film as a free-standing electrode for improved Li-SeS batteries.
作者信息
Shao Yu, Chen Fei, Ren Naiqing, Wang Shuo, Wang Junru, Wen Zhaoyin, Chen Chunhua
机构信息
CAS Key Laboratory of Materials for Energy Conversions, Department of Materials Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Anhui Hefei, 230026, China.
Key Laboratory of Energy Conversion Laboratory, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
出版信息
Chem Commun (Camb). 2022 Jul 5;58(54):7570-7573. doi: 10.1039/d2cc02218d.
We design a vanadium nitride (VN) modified porous carbon nanofiber film as the host to load SeS as the cathode (SeS@VN/CNFs) for improving Li storage capacity. The conductive porous carbon nanofibers can accommodate active SeS and release the volume change. The introduced VN nanoparticles can chemically anchor the intermediate species and improve the utilization of SeS. As a result, the SeS@VN/CNFs cathode displays a superior electrochemical performance including a high reversible capacity of 806 mAh g at 0.2 C and good long-term cycling stability in Li-SeS batteries.
我们设计了一种氮化钒（VN）修饰的多孔碳纳米纤维薄膜作为主体，负载硒化硫（SeS）作为锂硫电池的正极（SeS@VN/CNFs），以提高锂存储容量。导电多孔碳纳米纤维可以容纳活性SeS并缓解体积变化。引入的VN纳米颗粒可以化学锚定中间物种并提高SeS的利用率。因此，SeS@VN/CNFs正极在锂硒硫电池中表现出优异的电化学性能，包括在0.2 C时具有806 mAh g的高可逆容量和良好的长期循环稳定性。
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