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

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルECS Transactions - Solid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting
ページ401-406
ページ数6
51
DOI
出版ステータスPublished - 2008 12 1
イベントSolid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting - Honolulu, HI, United States
継続期間: 2008 10 122008 10 17

出版物シリーズ

名前ECS Transactions
番号51
16
ISSN(印刷版)1938-5862
ISSN(電子版)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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