Interface-induced polymerization strategy for constructing titanium dioxide embedded carbon porous framework with enhanced chemical immobilization towards lithium polysulfides  

作　　者：Yue Ouyang Xiaoxiao Li Jiexin Zhu Wei Zong Yuhang Dai Xuan Gao Wei Zhang Shengyuan Yang Roohollah Bagherzadeh Feili Lai Yue-E Miao Tianxi Liu 

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,2999 North Renmin Road,Shanghai 201620,China [2]The Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China [3]Advanced Fibrous Materials LAB,Institute for Advanced Textile Materials and Technologies(ATMT),School of Advanced Materials and Processes,Amirkabir University of Technology,Tehran 15914,Iran [4]Christopher Ingold Laboratory,Department of Chemistry,University College London,20 Gordon Street,London WC1H 0AJ,UK [5]Department of Chemistry,KU Leuven,Celestijnenlaan 200F,Leuven 3001,Belgium

出　　处：《Nano Research》2024年第3期1473-1481,共9页纳米研究（英文版）

基　　金：support from the National Natural Science Foundation of China(No.22075042);Shanghai Rising-Star Program(No.22QA1400300);the Natural Science Foundation of Shanghai(No.20ZR1401400);the Shanghai Scientific and Technological Innovation Project(No.22520710100);the Innovation Program of Shanghai Municipal Education Commission(No.2021-01-07-00-03-E00108);the Fundamental Research Funds for the Central Universities,and the Donghua University(DHU)Distinguished Young Professor Program(No.LZB2021002).

摘　　要：The shuttle effect induced by soluble lithium polysulfides(LiPSs)is known as one of the crucial issues that limit the practical applications of lithium-sulfur(Li-S)batteries.Herein,a titanium dioxide nanoparticle embedded in nitrogen-doped porous carbon nanofiber(TiO_(2)@NCNF)composite is constructed via an interface-induced polymerization strategy to serve as an ideal sulfur host.Under the protection of the nanofiber walls,the uniformly dispersed TiO_(2) nanocrystalline can act as capturing centers to constantly immobilize LiPSs towards durable sulfur chemistry.Besides,the mesoporous microstructure in the fibrous framework endows the TiO_(2)@NCNF host with strong physical reservation for sulfur and LiPSs,sufficient pathways for electron/ion transfer,and excellent endurance for volume change.As expected,the sulfur-loaded TiO_(2)@NCNF composite electrode presents a fabulous rate performance and long cycle lifespan(capacity fading rate of 0.062%per cycle over 500 cycles)at 2.0 C.Furthermore,the assembled Li-S batteries harvest superb areal capacity and cycling stability even under high sulfur loading and lean electrolyte conditions.

关 键 词：interface-induced polymerization electrospun porous nanofibers lithium-sulfur(Li-S)batteries high sulfur loading lithium polysulfides(LiPSs)immobilization 

分 类 号：TB383[一般工业技术—材料科学与工程]