High-performance porous carbon for supercapacitors prepared by one-step pyrolysis of PF/gelatin blends |
| |
Authors: | Bin Yi Xiao-hua Chen Yun-quan Liu Kai-min Guo Chuan-sheng Chen Bin Zeng and Hui Long |
| |
Affiliation: | [1]College of Materials Science and Engineering, Hunan University, Changsha 410082, China [2]College of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114, China |
| |
Abstract: | A high-performance porous carbon material for supercapacitor electrodes was prepared by using a polymer blend method. Phenol-formaldehyde
resin and gelatin were used as carbon precursor polymer and pore former polymer, respectively. The blends were carbonized
at 800 °C in nitrogen. SEM, BET measurement and BJH method reveal that the obtained carbon possesses a mesoporous characteristic,
with the average pore size between 3.0 nm and 5.0 nm. The electrochemical properties of supercapacitor using these carbons
as electrode material were investigated by cyclic voltammetry and constant current charge-discharge. The results indicate
that the composition of blended polymers has a strong effect on the specific capacitance. When the mass ratio of PF to gelatin
is kept at 1:1, the largest surface area of 222 m2/g is obtained, and the specific capacitance reaches 161 F/g. |
| |
Keywords: | mesoporous carbon polymer blend supercapacitor pseudocapacitance electrochemical properties |
本文献已被 维普 SpringerLink 等数据库收录! |
|