Polypyrrole/carbon aerogel composite materials for supercapacitor

An, Hongfang; Wang, Ying; Wang, Xianyou; Zheng, Liping; Wang, Xianyou; Yi, Lanhua; Bai, Li; Zhang, Xiaoyan

doi:10.1016/j.jpowsour.2010.04.074

Cited by 216 publications

(85 citation statements)

References 24 publications

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“…Recently, the focus has been diverted to graphene-based materials since they have shown immense theoretical and practical advantages, such as a large surface area, excellent conductivity and capacitance, as well as relatively low production costs [5][6][7][8]. On the other hand, polypyrrole (PPy), which is an ideal candidate for pseudo-capacitor electrode, is receiving considerable attention as a result of its high electrical properties [9], ease of preparation, good environment stability [10] and large specific capacitance [11]. Redox metal oxides such as RuO 2 and MnO 2 are also promising materials for pseudo-capacitors.…”

Section: Introductionmentioning

confidence: 99%

Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors

Lim

Tan

Lim

et al. 2014

Ceramics International

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractA simple method based on potentiostatic polymerization was developed for the preparation of ternary manganese oxide-based nanocomposite films. The ternary nanocomposites, which were characterized using x-ray diffraction spectroscopy and x-ray photoelectron spectroscopy, showed that the manganese oxide within the film consisted of MnO 2 and Mn 2 O 3 . Electrochemical measurements showed that the ternary nanocomposite electrode exhibited high specific capacitance (up to 320.6 F/g), which was attributed to the morphology of a polypyrrole/graphene/manganese-oxide (PPy/GR/MnO x ) ternary nanocomposite. The experimental approach maximized the pseudocapacitive contribution from redox-active manganese oxide (MnO x ) and polypyrrole (PPy), as well as the electrochemical double layer capacitive (EDLC) characteristic from graphene (GR) sheets. Long cyclic measurements indicated that the specific capacitance of the ternary nanocomposite film could retain 93% of its initial value over 1,000 charge/discharge cycles, in the potential range of -0.2 to 0.7 V vs. silver/silver chloride electrode (Ag/AgCl).

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Section: Introductionmentioning

confidence: 99%

Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors

Lim

Tan

Lim

et al. 2014

Ceramics International

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“…As a result, the energy density and power density of supercapacitors are improved. Besides CNTs, some other carbon materials such as carbon aerogel [38] and mesoporous carbon [39] have also been used to improve the electrochemical performance of polypyrrole in the literatures. Although the initial capacitance of PPy/F-MWNTs composite is lower than that of carbon aerogel modified PPy [38] which is 318 Fg −1 at the scanning rate of 10 mV s −1 , the cycling performance of the former is much better, i.e., capacity retention of 93.49% after 1,000 cycles at 1 A g −1 comparing to that of 50% for the latter.…”

Section: Resultsmentioning

confidence: 99%

“…Besides CNTs, some other carbon materials such as carbon aerogel [38] and mesoporous carbon [39] have also been used to improve the electrochemical performance of polypyrrole in the literatures. Although the initial capacitance of PPy/F-MWNTs composite is lower than that of carbon aerogel modified PPy [38] which is 318 Fg −1 at the scanning rate of 10 mV s −1 , the cycling performance of the former is much better, i.e., capacity retention of 93.49% after 1,000 cycles at 1 A g −1 comparing to that of 50% for the latter. Zou [39] et al studied the supercapacitor performance of mesoporous carbon/polypyrrole composite which gives a specific capacitance of 261 Fg −1 , 238 Fg −1 and 203 Fg −1 , respectively, at the scanning rate of 10 mV s −1 , 20 mV s −1 and 50 mV s −1 .…”

Section: Resultsmentioning

confidence: 99%

Electropolymerized composite film of polypyrrole and functionalized multi-walled carbon nanotubes: effect of functionalization time on capacitive performance

Sun

Wang

2012

J Solid State Electrochem

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The composite film of polypyrrole and functionalized multi-walled carbon nanotubes (PPy/F-MWNTs) was prepared by electropolymerization. MWNTs were functionalized by sonicating with a concentrated solution of H 2 SO 4 / HNO 3 (3/1, volume ratio) in a water bath for different times. The carbon nanotubes (CNTs) are cut into smaller portions with more functional groups introduced on their surface when the sonicating time (nominated as functionalization time hereafter) is increased. However, the specific capacitance of the composite film reaches a maximum of 240 Fg −1 at the scanning rate of 10 mV s −1 when MWNTs are functionalized for 24 h, which is about 205 Fg −1 , 225 Fg −1 and 232 Fg −1 , respectively, when MWNTs are functionalized for 6 h, 12 h and 48 h. At a current load of 1.0 A g −1 , PPy/F-MWNT composite film functionalized for 24 h (PPy/F-MWNTs (24 h)) retains 93.49% of its initial capacitance after 1,000 cycles of galvanostatic charge/discharge, and the discharge efficiency is higher than 98.15% during cycling. High specific capacitance, good rate performance, fast charge/discharge ability and long cycling life are ascribed to the synergistic effect of the two components to form a porous composite film as well as the easy accessibility of counter ions into the film. Therefore, PPy/F-MWNT (24 h) composite film is a kind of promising electrode material for supercapacitors. The mechanism of underfunctionalization and overfunctionalization of carbon nanotubes is also discussed.

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“…must be controlled to achieve the highly efficient catalysts [6]. High surface area carbon supports are commonly used to increase the Pt surface area including active carbon, carbon black, carbon nanotubes and carbon aerogel [7,8]. Carbon black such as Vulcan XC-72 has been the most widely used catalyst support due to its superior properties [6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of polypyrrole/carbon composite as a catalyst support for fuel cell applications

Memioğlu

Bayrakçeken

Öznülüer

et al. 2012

International Journal of Hydrogen Energy

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Polypyrrole/carbon aerogel composite materials for supercapacitor

Cited by 216 publications

References 24 publications

Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors

Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors

Electropolymerized composite film of polypyrrole and functionalized multi-walled carbon nanotubes: effect of functionalization time on capacitive performance

Synthesis and characterization of polypyrrole/carbon composite as a catalyst support for fuel cell applications

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