Rational synthesis of carbon shell coated polyaniline/ MoS2 monolayer composites for high-performance supercapacitors

作     者：Chao Yang Zhongxin Chen Imran Shakir Yuxi Xu Hongbin Lu 

作者机构：State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Collaborative Innovation Center of Polymers and Polymer Composite Materials Fudan University Shanghai 200433 China Sustainable Energy Technologies (SET) center College of Engineering King Saud University PO-BOX 800 Riyadh 11421 Kingdom of Saudi Arabia 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2016年第9卷第4期

页      面：951-962页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：We are grateful for finandal support from Fudan University  National Basic Research Program of China (No. 2011CB605702)  National Natutral Science Foundation of China (No. 51173027)  The Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning (No. TP2015002) and Shanghai Basic Research Program (No. 14JC1400600). We also thank Miss Q. Yah  Dr. L. Dei  Dr. G. Qi  Dr. Y. Cui and Dr. Y. Ren at Fudan University and Miss Q. Hu at Shanghai Jiao Tong University for the help with the experiments. Dr. S. Ye and Dr. Y. Zhang at Fudan University provide some suggestions  too. I. S. would like to extend his sincere appreciation to the Deanship of Scientific Research at the King Saud University for its funding of this research through the Research Prolific Research Group  Project No PRG-1436-25 

主　　题：supercapadtor polyaniline molybdenum disulfide carbon shell cycle stability 

摘      要：Conducting polymers generally show high specific capacitance but suffer from poor rate capability and rapid capacitance decary which greatly limits their practical applications in supercapacitor electrodes. To this end, many studies have focused on improving the overall capacitive performance by synthesizing nanostructured conducting polymers or by depositing a range of coatings to increase the active surface area exposed to the electrolyte and enhance the charge transport efficiency and structural stability. Despite this, simultaneously achieving high specific capacitance, good rate performance, and long cycle life remains a considerable challenge. Among the various two-dimensional （2D） layered materials, octahedral （1T） phase molybdenum disulfide （MoS2） nano- sheets have high electrical conductivity, large specific surface areas, and unique surface chemical characteristics, making them an interesting substrate for the controlled growth of nanostructured conducting polymers. This paper reports the rational synthesis of carbon shell-coated polyaniline （PANI） grown on 1T MoS2 monolayers （MoS2/PANI@C）. The composite electrode comprised of MoS2/ PANI@C with a -3 nm carbon shell exhibited a remarkable specific capacitance of up to 678 F-g-1 （1 mV.s-1）, superior capacity retention of 80% after 10,000 cycles and good rate performance （81% at 10 mV.s-1） due to the multiple synergic effects between the PANI nanostructure and 1T MoS2 substrates as well as protection by the uniform thin carbon shell. These properties are comparable to the best overall capacitive performance achieved for conducting polymers-based supercapacitor electrodes reported thus far.