Synthesis and proton transport property of poly(aspartic acid) thin film on MgO(100) substrate

Y. Nagao, M. Ando, H. Maekawa, C. H. Chang, F. Iguchi, N. Sata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

An enhancement in proton conductivity for poly(aspartic acid)/sodium polyaspartate (P-Asp) by synthesizing thin film on MgO substrate was investigated. The average degrees of polymerization and molecular weight were ̃70 and ̃9400, respectively. The degree of protonation in the carboxylic acid groups was 10 %. The proton conductivities of the pelletized P-Asp and thin film were 6.4 x 10-4 and 3.4 x 10-3 S cm-1, respectively, under a relative humidity of 70 % and 298 K. The proton conductivity of the thin film was found to be five times higher than that of the pelletized P-Asp. The activation energy for the proton conduction of the pelletized P-Asp was 0.89 eV. The activation energy of P-Asp thin film was smaller than that of the pelletized sample. Application of this phenomenon may lead to a new method for producing highly proton-conductive material.

Original languageEnglish
Title of host publicationECS Transactions - Solid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting
Pages401-406
Number of pages6
Edition51
DOIs
Publication statusPublished - 2008 Dec 1
EventSolid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting - Honolulu, HI, United States
Duration: 2008 Oct 122008 Oct 17

Publication series

NameECS Transactions
Number51
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSolid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period08/10/1208/10/17

ASJC Scopus subject areas

  • Engineering(all)

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