Login / Signup

Vertically Aligned Co9 S8 Nanotube Arrays onto Graphene Papers as High-Performance Flexible Electrodes for Supercapacitors.

Dongbin XiongXi-Fei LiZhimin BaiJianwei LiYan HanDejun Li
Published in: Chemistry (Weinheim an der Bergstrasse, Germany) (2017)
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 Co9 S8 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 Co9 S8 /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 Co9 S8 /GPs can be potentially applied in high performance flexible supercapacitors.
Keyphrases
  • solid state
  • reduced graphene oxide
  • carbon nanotubes
  • gold nanoparticles
  • room temperature
  • mass spectrometry
  • high resolution
  • sewage sludge