General Formation of MxCo3-xS4 (M=Ni, Mn, Zn) Hollow Tubular Structures for Hybrid Supercapacitors

被引：263
|
作者：
Chen, Yu Ming [1 ]
Li, Zhen [1 ]
Lou, Xiong Wen [1 ]
机构：
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2015年 / 54卷 / 36期
关键词：
mixed metal sulfides; nanotubes; polymeric template; supercapacitors; HIGH-PERFORMANCE SUPERCAPACITORS; ENHANCED PSEUDOCAPACITIVE PROPERTIES; LITHIUM STORAGE; ION BATTERIES; NANOSTRUCTURES; NANOSHEETS; GRAPHENE; CARBON; NANOCRYSTALS; ELECTRODE;
D O I：
10.1002/anie.201504349
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A simple and versatile method for general synthesis of uniform one-dimensional (1D) MxCo3-xS4 (M=Ni, Mn, Zn) hollow tubular structures (HTSs), using soft polymeric nanofibers as a template, is described. Fibrous core-shell polymer@M-Co acetate hydroxide precursors with a controllable molar ratio of M/Co are first prepared, followed by a sulfidation process to obtain core-shell polymer@MxCo3-xS4 composite nanofibers. The as-made MxCo3-xS4 HTSs have a high surface area and exhibit exceptional electrochemical performance as electrode materials for hybrid supercapacitors. For example, the MnCo2S4 HTS electrode can deliver specific capacitance of 1094Fg(-1) at 10Ag(-1), and the cycling stability is remarkable, with only about 6% loss over 20000 cycles.
引用
收藏
页码：10521 / 10524
页数：4
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