Robust S-doped TiO_(2)@N,S-codoped carbon nanotube arrays as free-binder anodes for efficient sodium storage

作     者：Guangzeng Liu Man Huang Zhengchunyu Zhang Baojuan Xi Haibo Li Shenglin Xiong Guangzeng Liu;Man Huang;Zhengchunyu Zhang;Baojuan Xi;Haibo Li;Shenglin Xiong

作者机构：School of Chemistry and Chemistry EngineeringQilu Normal UniversityJinan 250200ShandongChina Key Laboratory of Colloid and Interface ChemistryMinistry of EducationSchool of Chemistry and Chemical Engineeringand State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100ShandongChina School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059ShandongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第2期

页      面：175-184,I0007页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070205[理学-凝聚态物理] 0807[工学-动力工程及工程热物理] 080501[工学-材料物理与化学] 0827[工学-核科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financial supports provided by the National Natural Science Foundation of China (21871164) the Taishan Scholar Project Foundation of Shandong Province (ts20190908, ts201511004) the Natural Science Foundation of Shandong Province (ZR2019MB024) 

主　　题：Hollow structures Nanotube arrays S-doped TiO_(2) N S-codoped carbon Sodium-ion batteries 

摘      要：Titanium dioxide(TiO_2) has been investigated broadly as a stable,safe,and cheap anode material for sodium-ion batteries in recent ***,the poor electronic conductivity and inherent sluggish sodium ion diffusion hinder its practical ***,a self-template and in situ vulcanization strategy is developed to synthesize self-supported hybrid nanotube arrays composed of nitrogen/sulfur-codoped carbon coated sulfur-doped TiO_2 nanotubes(S-TiO_2@NS-C) starting from H_2 Ti_2 O_5-H_2 O *** S-TiO_2@NS-C composite with one-dimensional nano-sized subunits integrates several ***,sulfur doping strongly improves the Na~+ storage ability of TiO_2@C-N nanotubes by narrowing the bandgap of original TiO_*** from the nanoarrays structures built from hollow nanotubes,carbon layer and sulfur doping,the sluggish Na~+ insertion/extraction kinetics is effectively improved and the volume variation of the electrode material is significantly *** a result,the S-TiO_2@NS-C nanoarrays present efficient sodium storage *** greatly improved sodium storage performances of S-TiO_2@NS-C nanoarrays confirm the importance of rational engineering and synthesis of hollow array architectures with higher complexity.