Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (11): 35-40.doi: 10.13475/j.fzxb.20211111206

• Fiber Materials • Previous Articles     Next Articles

Preparation and electrochemical performance of composite carbon nanotube/Ni/polyaniline fibrous supercapacitor

LOU Huiqing1,2,3(), ZHU Feichao4, LI Leilei2, DING Huilong2, PU Dandan2, WANG Xiangfei2   

  1. 1. Clothing Engineering Research Center of Zhejiang Province, Hangzhou, Zhejiang 310018, China
    2. School of Textiles Engineering, Henan University of Engineering, Zhengzhou, Henan 450007, China
    3. Shenma Industrial Co., Ltd., Pingdingshan, Henan 467021, China
    4. College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2021-11-30 Revised:2022-08-10 Online:2022-11-15 Published:2022-12-26

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Abstract:

In order to improve the capacitance performance of fibrous supercapacitors, carbon nanotube (CNT) fibers were subjected to anodizing pretreatment, metallization treatment and electrodeposition of polyaniline to obtain different electrode materials. CNT, CNT/polyaniline (CNT-PANI), CNT/anodization/polyaniline (CNT-O-PANI), CNT/anodization/metallization/polyaniline (CNT-O-Ni-PANI) was used to assemble the fibrous supercapacitor separately, and its structure and electrochemical performance were studied. The results show that after anodic oxidation and metallization, polyaniline was uniformly and tightly dispersed on the surface of the CNT fibers, and there was no agglomeration phenominon. The supercapacitor prepared by CNT-O-Ni-PANI electrode material has excellent energy storage performance, and its specific capacitance and energy density are much higher than the other three electrode materials. At a current density of 1 A/g, its specific capacitance and energy density are 357.8 F/g and 178.9 W·h/kg respectively, and at a scanning speed of 10 mV/s, its specific capacitance is as high as 1 246.3 F/g. The CNT-O-Ni-ANI supercapacitors have better stability performance, and at a current density of 5 A/g, the capacitance retention rate is still as high as 99.7% after 10 000 constant current charge and discharge cycles.

Key words: fibrous supercapacitor, carbon nanotube fiber, anodization, polyaniline, specific capacitance

CLC Number: 

  • TS102.6

Fig.1

Morphology of electrode material"

Fig.2

Galvanostatic charge-discharge curve"

Tab.1

Storage performance of supercapacitors"

电容器
类型		 比容量/
(F·g-1)		 能量密度/
(W·h·kg-1)		 功率密度/
(kW·kg-1)
CNT 22.1 11.1 1.47
CNT-PANI 73.7 36.9 1.66
CNT-O-PANI 173.0 86.5 1.75
CNT-O-Ni-PANI 357.8 178.9 1.80

Fig.3

Cyclic voltammetry curve"

Fig.4

CV curve of CNT-O-Ni-PANI at different scanning speeds"

Fig.5

Electrochemical impedance spectroscopy tests"

Fig.6

Long-term cycle performance"

Fig.7

Flexility of fiber-shaped supercapacitor"

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