elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Enhancement of Proton Transport in an Oriented Polypeptide Thin Film

Nagao, Yuki and Matsui, Jun and Abe, Takashi and Hiramatsu, Hirotsugu and Yamamoto, Hitoshi and Miyashita, Tokuji and Sata, Noriko and Yugami, Hiroo (2013) Enhancement of Proton Transport in an Oriented Polypeptide Thin Film. Langmuir, 29, pp. 6798-6804. American Chemical society (ACS). DOI: 10.1021/la400412f ISSN 0743-7463

[img]
Preview
PDF
2MB

Abstract

Proton transport properties of a partially protonated poly(aspartic acid)/sodium polyaspartate (P-Asp) were investigated. A remarkable enhancement of proton conductivity has been achieved in the thin film. Proton conductivity of 60-nm-thick thin film prepared on MgO(100) substrate was 3.4 × 10−3 S cm−1 at 298 K. The electrical conductivity of the oriented thin film was 1 order of magnitude higher than the bulk specimen, and the activation energies for the proton conductivity were 0.34 eV for the oriented thin film and 0.65 eV for the pelletized sample, respectively. This enhancement of the proton transport is attributable to the highly oriented structure on MgO(100) substrate. This result proposes great potential for a new strategy to produce a highly proton-conductive material using the concept of an oriented thin film structure without strong acid groups.

Item URL in elib:https://elib.dlr.de/84923/
Document Type:Article
Title:Enhancement of Proton Transport in an Oriented Polypeptide Thin Film
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nagao, YukiSchool of Materials Science, Japan Advanced Institute of Science and TechnologyUNSPECIFIED
Matsui, JunInstitute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku UniversityUNSPECIFIED
Abe, TakashiGraduate School of Science and Technology, Niigata UniversityUNSPECIFIED
Hiramatsu, HirotsuguGraduate School of Pharmaceutical Sciences, Tohoku UniversityUNSPECIFIED
Yamamoto, HitoshiDepartment of Safety and Hygiene, Osaka UniversityUNSPECIFIED
Miyashita, TokujiInstitute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku UniversityUNSPECIFIED
Sata, NorikoInstitute of Technical Thermodynamics, German Aerospace Center (DLR)UNSPECIFIED
Yugami, HirooGraduate School of Engineering, Tohoku UniversityUNSPECIFIED
Date:30 May 2013
Journal or Publication Title:Langmuir
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:29
DOI :10.1021/la400412f
Page Range:pp. 6798-6804
Publisher:American Chemical society (ACS)
ISSN:0743-7463
Status:Published
Keywords:proton transport, polypeptide thin film, PEFC, infrared reflection absorption spectroscopy
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Metzger-Sata, Dr. Noriko
Deposited On:30 Oct 2013 12:17
Last Modified:31 Jul 2019 19:42

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.