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Research Papers

Flexible Cellulose-Based Films of Polyaniline–Graphene–Silver Nanowire for High-Performance Supercapacitors

[+] Author and Article Information
Ali Khosrozadeh

Mem. ASME
Department of Mechanical Engineering,
University of Manitoba,
Winnipeg, MB R3T 5V6, Canada
e-mail: ali.khosrozadeh@umanitoba.ca

Mohammad Ali Darabi

Department of Mechanical Engineering,
University of Manitoba,
Winnipeg, MB R3T 5V6, Canada
e-mail: Darabima@myumanitoba.ca

Malcolm Xing

Department of Mechanical Engineering;Department of Biochemistry
and Medical Genetics;
Manitoba Institute of Child Health,
University of Manitoba,
Winnipeg, MB R3T 5V6, Canada
e-mail: malcolm.xing@umanitoba.ca

Quan Wang

Department of Mechanical Engineering,
Khalifa University,
P.O. Box 127788,
Abu Dhabi, United Arab Emirates;
Department of Mechanical Engineering,
University of Manitoba,
Winnipeg, MB R3T 5V6, Canada
e-mail: quan.wang@kustar.ac.ae

1Corresponding author.

Manuscript received May 23, 2015; final manuscript received August 4, 2015; published online September 10, 2015. Assoc. Editor: Roger Narayan.

J. Nanotechnol. Eng. Med 6(1), 011005 (Sep 10, 2015) (5 pages) Paper No: NANO-15-1042; doi: 10.1115/1.4031385 History: Received May 23, 2015; Revised August 04, 2015

We report a facile fabrication of a high-performance supercapacitor (SC) using a flexible cellulose-based composite film of polyaniline (PANI), reduced graphene oxide (RGO), and silver nanowires (AgNWs). The flexibility, high capacitive behavior, cyclic stability, and enhanced rate capability of the entire device make it a good candidate for flexible and wearable SCs. Our results demonstrate that a capacitance as high as 73.4 F/g (1.6 F/cm2) at a discharge rate of 1.1 A/g is achieved. In addition, the SC shows a power density up to 468.8 W/kg and an energy density up to 5.1 Wh/kg. The flexibility of the composite film is owing to the binding effect of cellulose fibers as well as AgNWs. The superb electrochemical performance of the device is found to be mainly attributed to the synergistic effect between PANI/RGO/AgNWs ternary in a cushiony cellulose scaffold and porous structure of the composite.

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References

Figures

Grahic Jump Location
Fig. 1

(a) Freestanding film of PANI/graphene/cellulose/AgNWs, (b) SEM images of the film, and (c) the corresponding EDS spectrum of the film

Grahic Jump Location
Fig. 2

SEM images of the film with different magnifications

Grahic Jump Location
Fig. 3

(a) GCD curves for different current densities, (b) mass-specific capacitance versus current density, (c) ESR versus current density, and (d) Ragone plot

Grahic Jump Location
Fig. 4

(a) Nyquist plots before and after 1500 cycles of GCD and (b) cyclic performance of the device for 2400 cycles of GCD at 1.6 A/g (percentages of power density, energy density, and capacitance versus cycle)

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