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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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