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Electrochemical Investigation of 2, 2′-Dlaminobenzyloxydisulfide

Published online by Cambridge University Press:  10 February 2011

Y. Z. Su  and
K. C. Gong
Y. Z. Su
Affiliation:
Polymer Structure & Modification Res. Lab., South China University of Technology, Guangzhou, China 510641, [email protected]
K. C. Gong
Affiliation:
Polymer Structure & Modification Res. Lab., South China University of Technology, Guangzhou, China 510641, [email protected]
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Abstract

A new conducting polymer, poly(2, 2′-diaminobenzyloxydisulfide), has been proposed as a positive material suitable for secondary lithium batteries. With the aim of better understanding the process of polymerization and depolymerization of 2,2′-diaminobenzyloxydisulfide(DABO). The redox behavior, kinetic reversibility and adsorption of DABO have been investigated at platinum electrode in acetonitrile/tetrahydrofuran solution by using linear sweep voltammetry, the cyclic sweep voltammetry and the rotating disk electrode technique. These experiments clearly showed the reaction is chemically reversible but kinetically slow at ambient temperature and charge transfer is the rate-determining step, but chemical dimerizaton is at equilibrium. The results are common to many organic disulfides. Furthermore, the striking observation from cyclic voltammograms is the smaller separation of the anodic and cathodic peak owing to the specific structure of DABO, compared with other organic disulfides. This results indicates the redox reaction of DABO is higher kinetically reversible and poly (DABO) positive material is expected to deliver higher power output or energy efficiency.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 600: Symposium FF – Electroactive Polymers , 1999 , 215
Copyright
Copyright © Materials Research Society 2000

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