Okra‑Like Multichannel TiO@NC Fibers Membrane with Spatial and Chemical Restriction on Shuttle‑Effect for Lithium–Sulfur Batteries
作者机构：Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of EducationBeijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing 100191People’s Republic of China Beijing Key Laboratory for Bioengineering and Sensing TechnologyDaxing Research InstituteSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083People’s Republic of China Department of ChemistryCollege of ScienceHebei Agricultural UniversityBaoding 071001People’s Republic of China Research School of ChemistryAustralian National UniversityAustralian Capital TerritoryCanberra 2601Australia School of Materials Science and EngineeringLanzhou Jiaotong UniversityLanzhou 730070China
出 版 物：《Advanced Fiber Materials》 (先进纤维材料（英文）)
年 卷 期：2023年第5卷第1期
页 面：252-265页
核心收录：
基 金：supported by the National Natural Science Foundation of China(NSFC)(Grant Nos.22175007,21975007,52172080,22105012,22005012,22105059) the National Natural Science Foundation for Outstanding Youth Foundation,the Fundamental Research Funds for the Central Universities(YWF-22-K-101) the National Program for Support of Topnotch Young Professionals,the 111 project(Grant No.B14009) the Youth Top-notch Talent Foundation of Hebei Provincial Universities(BJK2022023) the Interdisciplinary Research Project for Young Teachers of USTB(Fundamental Research Funds for the Central Universities)(FRF-IDRY-21-015)
主 题：Multichannel Electrospinning Hierarchical structure Spatial confinement Chemical binding Lithium–sulfur battery
摘 要：It is especially important to coordinately design the structure and composition of the host in lithium–sulfur batteries(LSBs)for improving its physicochemical adsorption and conversion of lithium polysulfide,which can alleviate the harmful shuttle ***,a self-supporting multichannel nitrogen-doped carbon fibers membrane embedded with TiO nanoparticles(TiO@NC)was constructed as the electrode for *** inner channels and the embedded TiO nanoparticles offer spatial confinement and chemical binding for polysulfides,***,the TiO nanoparticles have abundant oxygen vacancies that promote the conversion of *** addition,the nitrogen-doped carbon skeleton can not only serve as highly conductive transportation paths for electrons,but also integrate with the inner channels to sustain the morphology and bear volume expansion during cycling ***,the fabricated self-supporting quadruple-channel TiO@NC ultrathin fibers electrode exhibits a high initial specific capacity of 1342.8 mAh g^(-1)at 0.5 C and high-rate capability of 505.8 mAh g^(-1)at 4.0 *** addition,it maintains 696.0 mAh g^(-1)over 500 cycles with only 0.059%capacity decay per cycle at the high current density of 2.0 *** multichannel configuration combined with TiO nanoparticles provides a synergetic design strategy for fabricating high-performance electrodes in LSBs.
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