Premium
Vertically Aligned Co 9 S 8 Nanotube Arrays onto Graphene Papers as High‐Performance Flexible Electrodes for Supercapacitors
Author(s) -
Xiong Dongbin,
Li Xifei,
Bai Zhimin,
Li Jianwei,
Han Yan,
Li Dejun
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201704239
Subject(s) - supercapacitor , graphene , materials science , electrode , capacitance , nanotechnology , nanotube , electrochemistry , hydrothermal circulation , conductivity , optoelectronics , carbon nanotube , chemical engineering , chemistry , engineering
Paper‐like electrodes are emerging as a new category of advanced electrodes for flexible supercapacitors (SCs). Graphene, a promising two‐dimensional material with high conductivity, can be easily processed into papers. Here, we report a rational design of flexible architecture with Co 9 S 8 nanotube arrays (NAs) grown onto graphene paper (GP) via a facile two‐step hydrothermal method. When employed as flexible free‐standing electrode for SCs, the proposed architectured Co 9 S 8 /GPs exhibits superior electrochemical performance with ultrahigh capacitance and outstanding rate capability (469 F g −1 at 10 A g −1 ). These results demonstrate that the new nanostructured Co 9 S 8 /GPs can be potentially applied in high performance flexible supercapacitors.