Title of article :
Mn2O3/carbon aerogel microbead composites synthesized by in situ coating method for supercapacitors
Author/Authors :
Wang، نويسنده , , Xingyan and Liu، نويسنده , , Li and Wang، نويسنده , , Xianyou and Yi، نويسنده , , Lanhua and Hu، نويسنده , , Chuanyue and Zhang، نويسنده , , Xiaoyan، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
7
From page :
1232
To page :
1238
Abstract :
A series of Mn2O3/carbon aerogel microbead (Mn2O3/CAMB) composites for supercapacitor electrodes have been synthesized by in situ encapsulation method. The structure and morphology of Mn2O3/CAMB are characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectrum and scanning electron microscopy (SEM). Electrochemical performances of the synthesized composites are evaluated by cyclic voltammetry and galvanostatic charge/discharge measurement. All the composites with different Mn2O3 contents show higher specific capacitance than pure CAMB due to the pseudo-capacitance of the Mn2O3 particles dispersed on the surface of CAMB. The highest specific capacitance is up to 368.01 F g−1 when 10 wt% Mn2O3 is coated on the surface of CAMB. Besides, 10%-Mn2O3/CAMB supercapacitor exhibits excellent cyclic stability, the specific capacitance still retains 90% of initial capacitance over 5000 cycles.
Keywords :
Carbon aerogel microbeads , Composite , Supercapacitor , Electrochemical performance
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Serial Year :
2011
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Record number :
2148685
Link To Document :
بازگشت