TY - GEN
T1 - Microstructure and properties of aminated carbon nanotubes/graphene oxide-MnO2 composite for supercapacitor Electrodes
AU - Zhenye, Zhu
N1 - Publisher Copyright:
© 2018 Trans Tech Publications.
PY - 2018
Y1 - 2018
N2 - MWCNTs-NH2/GO-MnO2 composites with different feeding ratio are synthesized by a simple soft chemical route in water-isopropyl alcohol. By amination treatment, carbon nanotubes become more dispersed, thinner and more uniform, and more defect structures are found in MWCNTs-NH2. MWCNTs-NH2 grows on the surface of graphene. Nano manganese oxide homogeneously coats on the surfaces of carbon nanotubes and graphene Oxide. Specific capacitances of MWCNTs-NH2/GO-MnO2 composite calculated by galvanostatic charge/discharge curve were 286.33 F/g at current density 1A·g-1 when feeding ratio is 1:1:6. With the increase of the content of manganese oxide, Nyquist semicircle of EIS parallel shifts to the right and the slash slope of EIS is gradually flat, indicating that resistance increases. When the feeding ratio is equal to 1:1:15, the resistance reaches the maximum. The phenomenon may ascribe to the agglomerate of manganese oxide, which hinders the diffusion rate of reaction ions and causes the increase of resistance.
AB - MWCNTs-NH2/GO-MnO2 composites with different feeding ratio are synthesized by a simple soft chemical route in water-isopropyl alcohol. By amination treatment, carbon nanotubes become more dispersed, thinner and more uniform, and more defect structures are found in MWCNTs-NH2. MWCNTs-NH2 grows on the surface of graphene. Nano manganese oxide homogeneously coats on the surfaces of carbon nanotubes and graphene Oxide. Specific capacitances of MWCNTs-NH2/GO-MnO2 composite calculated by galvanostatic charge/discharge curve were 286.33 F/g at current density 1A·g-1 when feeding ratio is 1:1:6. With the increase of the content of manganese oxide, Nyquist semicircle of EIS parallel shifts to the right and the slash slope of EIS is gradually flat, indicating that resistance increases. When the feeding ratio is equal to 1:1:15, the resistance reaches the maximum. The phenomenon may ascribe to the agglomerate of manganese oxide, which hinders the diffusion rate of reaction ions and causes the increase of resistance.
KW - Aminated carbon nanotubes
KW - Carbon nanotubes
KW - Graphene oxide
KW - Nano-manganese oxide
KW - Supercapacitor
UR - https://www.scopus.com/pages/publications/85054826551
U2 - 10.4028/www.scientific.net/KEM.777.196
DO - 10.4028/www.scientific.net/KEM.777.196
M3 - 会议稿件
AN - SCOPUS:85054826551
SN - 9783035713718
T3 - Key Engineering Materials
SP - 196
EP - 204
BT - Advanced Materials and Engineering Materials VII
A2 - Wei, Peng Sheng
PB - Trans Tech Publications Ltd
T2 - 7th International Conference on Advanced Materials and Engineering Materials, ICAMEM 2018
Y2 - 17 May 2018 through 18 May 2018
ER -