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author:

Wang, Pan (Wang, Pan.) [1] | Zheng, Yuying (Zheng, Yuying.) [2] | Li, Baoming (Li, Baoming.) [3]

Indexed by:

EI

Abstract:

Polypyrrole/graphite oxide (PPy/GO) composites are successfully prepared via in situ chemical polymerization with various feed ratios of pyrrole (Py) to graphite oxide (Py:GO = 0.5:1, 1:1, 3:1, 5:1). The electrochemical performance of the composites is determined in a three-electrode cell using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) techniques. The relationship between properties of PPy/GO composites and effect of the feed ratio of pyrrole to GO is investigated, and the results indicate that the thermal stability, electrical and electrochemical properties of the composites are strongly influenced by the feed ratios. The electrical conductivities of the PPy/GO composites are 1.27 S cm-1 (Py:GO = 3:1) and 6.25 S cm-1 (Py:GO = 5:1), which are significantly larger than that of pristine PPy and GO. The PPy/GO composites exhibit very high specific capacitance and low charge transfer resistance. Especially, the specific capacitance of the PPy/GO composites (Py:GO = 3:1) reaches 249 F g-1 at discharge current density of 2 mA cm -2, while the charge transfer resistance is only 0.12 Ω. The fabricated PPy/GO composites can be used for the development of new applications for supercapacitor. © 2013 Elsevier B.V.

Keyword:

Aromatic compounds Capacitance Charge transfer Composite materials Cyclic voltammetry Electric discharges Electrochemical impedance spectroscopy Electrochemical properties Graphene oxide Graphite Polypyrroles Supercapacitor

Community:

  • [ 1 ] [Wang, Pan]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China
  • [ 2 ] [Zheng, Yuying]College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
  • [ 3 ] [Li, Baoming]College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China

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Source :

Synthetic Metals

ISSN: 0379-6779

Year: 2013

Issue: 1

Volume: 166

Page: 33-39

2 . 2 2 2

JCR@2013

4 . 0 0 0

JCR@2023

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 46

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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