Hierarchical TiO2-B nanowire@α-Fe2O3 nanothorn core-branch arrays as superior electrodes for lithium-ion microbatteries

作     者：Hui Xia Wen Xiong Chiew Keat Lim Qiaofeng Yao Yadong Wang Jianping Xie 

作者机构：School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China Herbert Gleiter Institute of Nanoscience Nanjing University of Science and Technology Xiaolingwei 200 Nanjing 210094 China School of Engineering Nanyang Polytechnic 180 Ang Mo Kio Ave 8 Singapore 569830 Department of Chemical & Biomolecular Engineering Faculty of Engineering National University of Singapore Singapore 117585 

基　　金：This work was supported by the National Natural Science Foundation of China (No. 51102134)  the Natural Science Foundation of Jiangsu Province (No. BK20131349)  the China Postdoctoral Science Foundation (No. 2013M530258)  and the Jiangsu Planned Projects for Postdoctoral Research Funds (No. 1202001B) 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2014年第7卷第12期

页      码：1797-1808页

摘      要：This paper reports a simple yet efficient method for the synthesis of hierarchical TiO2-B nanowire@α-Fe2O3 nanothorn core-branch arrays based on a stepwise hydrothermal approach. The as-fabricated hybrid arrays show impressive performance as a high-capacity anode for lithium-ion batteries. The key design in this study is a core-branch hybrid architecture, which not only provides large surface active sites for lithium ion insertion/extraction, but also enables fast charge transport owing to the reduced diffusion paths for both electrons and lithium ions. The peculiar combination of attributes of TiO2 （good structural stability） and Fe2O3 （large specific capacity） provides the hybrid array electrodes with several desirable electrochemical features： large reversible capacity （-800 mA.h.g^-1 for specific mass capacity and -750 μA.h-cm^-2 for specific areal＂ capacity）, good cycling stability, and high rate capability. The impressive electrochemical performance, together with the facile synthesis procedure, may provide an efficient platform to integrate the TiO2 nanowire@Fe2O3 nanothorn core-branch arrays as a three-dimensional thin film electrode for lithium-ion microbatteries.

主 题 词：TiO2-B Fe2O3 nanowire arrays hierarchicalhybrid microbatteries 

学科分类：081704[081704] 0808[工学-自动化类] 07[理学] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 070301[070301] 

核心收录：

D　O　I：10.1007/s12274-014-0539-3

馆 藏 号：203166701...