Enhanced electrochemical performance of hierarchical porous carbon/polyaniline composite for supercapacitor applications

被引:3
|
作者
Rawal, Sangeeta [1 ]
Mandal, U. K. [2 ]
Kumar, Ashwani [3 ]
Kumar, Yogesh [4 ]
Joshi, Bhawana [1 ]
机构
[1] Gautam Buddha Univ, Dept Appl Phys, Greater Noida 201312, Uttar Pradesh, India
[2] Guru Gobind Singh Indraprastha Univ, Univ Sch Chem Technol, New Delhi 110078, India
[3] Indian Inst Technol, Inst Instrumentat Ctr, Nanosci Lab, Roorkee 247667, Uttar Pradesh, India
[4] Univ Delhi, ARSD Coll, Dept Phys, New Delhi 110021, India
来源
NANO EXPRESS | 2021年 / 2卷 / 01期
关键词
activated carbon; composite; Na2SO4; polyaniline; electrochemical properties; ACTIVATED CARBON; GRAPHENE OXIDE; POLYANILINE; ELECTRODES; MNO2; NANOSTRUCTURES; NANOCOMPOSITES; CAPACITORS; MORPHOLOGY; NANORODS;
D O I
10.1088/2632-959X/abdd88
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this work, activated carbon/polyaniline (AC/PANi) composites were synthesized by low temperature in situ polymerization and their electrochemical performance was investigated. Microstructure and morphology examination of the samples confirmed a uniform coating of polyaniline on AC surfaces without any change in the structure. The electrochemical studies of the samples confirmed the improvement in the electrochemical performance of AC/PANi composites. Despite a decrease in the specific surface area a substantial increase in electrochemical performance is recorded for the AC/PANi composites due to the synergistic effect between the pseudocapacitance and double layer capacitance. The highest specific capacitance of 1021 F g(-1) was calculated for the APA-29.4 composite in neutral aqueous electrolyte (1 M Na2SO4) which is many times greater than the specific capacitance values for AC (253 F g(-1)) and PANi (389 F g(-1)). The enhancement in the electrochemical performance of AC after polymerization with PANi in composites favours its use as a favourable electrode material for the energy storage devices.
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页数:14
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