Electrochemical lithium insertion into a poly(3,4-ethylenedioxythiophene) PEDOT/V2 O5 nanocomposite

Vadivel Murugan, A. ; Kwon, Chai-Won ; Campet, Gay ; Kale, B. B. ; Maddanimath, Trupti ; Vijayamohananc, K. (2002) Electrochemical lithium insertion into a poly(3,4-ethylenedioxythiophene) PEDOT/V2 O5 nanocomposite Journal of Power Sources, 105 (1). pp. 1-5. ISSN 0378-7753

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0378-7753(01)00992-2

Abstract

A nanocomposite comprised of conductive poly(3,4-ethylene dioxythiophene)PEDOT chains interleaved between the layers of crystalline V2O5 powder has been synthesized by direct in situ oxidation. The interlayer spacing of V2O5 expands from 4.32 to 13.84 Å and this interlayer separation is consistent with the existence of a monolayer of PEDOT in the V2O5 framework. The nanocomposite is coupled with a large-area Li foil counter electrode and a Li wire reference electrode in 1 M LiClO4 in a mixture of ethylene and dimethylcorbonate (50/50 by volume), the discharge capacity is ≥ 300 m Ah g-1 which is larger than that of pristine V2O5. The significant difference in capacity is explained on the basis of lithium ions insertion/de-insertion between the layers of V2O5.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Lithium Insertion; PEDOT/V2O5 Nanocomposite; Cathode Material
ID Code:68895
Deposited On:08 Nov 2011 04:36
Last Modified:08 Nov 2011 04:36

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