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Application of potentially biodegradable polyamide and polyester containing disulfide bonds to positive active materials for lithium secondary batteries

Published online by Cambridge University Press:  10 February 2011

H. Tsutsumi ,
S. Okada ,
K. Toda ,
K. Onimura  and
T. Oishi
H. Tsutsumi
Affiliation:
Department of Applied Chemistry & Chemical Engineering, Faculty of Engineering, Yamaguchi University, 2557 Tokiwadai, Ube 755, Japan
S. Okada
Affiliation:
Department of Applied Chemistry & Chemical Engineering, Faculty of Engineering, Yamaguchi University, 2557 Tokiwadai, Ube 755, Japan
K. Toda
Affiliation:
Department of Applied Chemistry & Chemical Engineering, Faculty of Engineering, Yamaguchi University, 2557 Tokiwadai, Ube 755, Japan
K. Onimura
Affiliation:
Department of Applied Chemistry & Chemical Engineering, Faculty of Engineering, Yamaguchi University, 2557 Tokiwadai, Ube 755, Japan
T. Oishi
Affiliation:
Department of Applied Chemistry & Chemical Engineering, Faculty of Engineering, Yamaguchi University, 2557 Tokiwadai, Ube 755, Japan
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Abstract

Potentially biodegradable polyamide (poly(imino-3, 3'-dithiodipropionylimmo-2, 2'-dithiodiethyl), -(NHCOCH2CH2-S-S-CH2CH2CO-NHCH2CH2-S-S-CH2CH2)n-, PIDI) and polyester (crosslinked poly(oxy-3, 3'-dithiodipropionyloxymethylene-l,4-phenylenemethylene,-(ICOCH2CH2-S-S-CH2CH2COO-CH2-C6H5-CH2)n- c-PODOM)) were prepared by interfacial polymerization between 3,3'-dithiodipropionic acid and cystamine, or 1, 4-benzenedimethanol. PIDI and c-PODOM showed the electrochemical responses based on reduction of the disulfide bonds in the polymer chains and re-oxidation of the produced thiolate anions. Degradation of PIDI and PODOM was investigated in various pH buffer solution. The apparent rate constant of c-PODOM at 25 °C was 1.3 × 103 % day−1 at pH 7 and that of PIDI at 37 °C was 3.5 × 103 % day−1 at pH 7. Estimated period for 90 % degradation of the polymers at pH 7 is about 1800 days (c-PODOM, 25 °C) and 630 days (PIDI, 37 °C).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 496: Symposium Y – Materials For Electrochemical Energy Storage & Conversion II… , 1997 , 323
Copyright
Copyright © Materials Research Society 1998

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References

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