文献类型：期刊文献

英文题名：Rational Design of Hierarchical TiO2/Epitaxially Aligned MoS2-Carbon Coupled Interface Nanosheets Core/Shell Architecture for Ultrastable Sodium-Ion and Lithium-Sulfur Batteries

作者：Yang, Yong[1];Wang, Shitong[2];Lin, Sen[3];Li, Yutong[2];Zhang, Weiyu[1];Chao, Yuguang[1];Luo, Mingchuan[1];Xing, Yi[1];Wang, Kai[1];Yang, Chao[1];Zhou, Peng[1];Zhang, Yelong[1];Tang, Zilong[2];Guo, Shaojun[1,4]

机构：[1]Peking Univ, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China;[2]Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[4]Peking Univ, BIC ESAT, Coll Engn, Beijing 100871, Peoples R China

年份：2018

卷号：2

期号：10

外文期刊名：SMALL METHODS

收录：;EI(收录号：20210609890178);WOS:【SCI-EXPANDED(收录号:WOS:000446671200012)】；

基金：Y.Y. and S.W. contributed equally to this work. This study was financially supported by the National Natural Science Foundation of China (No. 51671003), the National Basic Research Program of China (No. 2017YFA0206701), the start-up supports from Peking University and Young Thousand Talented Program and the China Postdoctoral Science Foundation (No. 2017M610018).

语种：英文

外文关键词：lithium-sulfur batteries; separators; sodium-ion storage; strong coupling interactions; ultralong life

摘要：The development of electrode materials with superior cycling stability is currently receiving intensive research for next-generation portable electronic equipment. Herein, a novel 3D hierarchical architecture composed of TiO2/epitaxially aligned MoS2-carbon coupled interface nanosheets is reported for boosting sodium-ion storage and lithium-sulfur batteries, in which the MoS2 nanosheets are epitaxially aligned grown on the surface of carbon nanosheets through a simple calculation conversion process. The resulting hybrid demonstrates ultralong-life performance for sodium-ion storage and lithium-sulfur batteries, owing to synergistic effects among the stable TiO2 nanowires, the high-conductivity carbon nanosheets, and the vertical MoS2 nanostructure. Even at a high current density of 8 A g(-1), the capacity can be maintained at 169 mA h g(-1) after 15 000 cycles, one of the highest values for TiO2-based electrodes. Moreover, such peculiar sheet-on-sheet structure also brings benefits for lithium-sulfur batteries, providing an effective physical shield against polysulfide shuttling and chemical adsorption of polysulfides, with a low fading rate (0.039% per cycle over 1500 cycles). The present work highlights that this rationally designed hybrid nanoarchitecture is an effective strategy to boost the stability of electrochemical energy storage.