Relative humidity-dependences of proton conductiVities of metal nanoparticles protected by rubeanic acid polymer

Musashi Fujishima, Ryuichi Ikeda, Takashi Kubo, Kazuhiro Nakasuji, Yuki Nagao, Miho Yamauchi, Yoshio Bando, Kumao Uchida, Hiroshi Kitagawa

Research output: Contribution to conferencePaper

Abstract

The polymer-protected metal nanoparticle, characterized by a uniform particle size, a monodispersity and a large specific surface area with a chemical stability, has attracted much attention because of its potential application in the hydrogen technology. In this study, by use of a rubeanic acid polymer (RAP) with a dibasic acidic character, polymer-protected noble metal nanoparticles (RAP-Pt, RAP-Pd) with 4~15 nm diameters were successfully synthesized. Their proton conductivities at room temperature show relative humidity (RH)-dependences and reach at remarkably high value (>1×10-2Scm-1) at RH = 100 %. The mechanism of this phenomenon will be also described.

Original languageEnglish
Number of pages1
Publication statusPublished - 2005 Dec 1
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: 2005 May 252005 May 27

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period05/5/2505/5/27

Keywords

  • Dibasic acid polymer
  • Polymer-protected metal nanoparticle
  • Proton conductivity

ASJC Scopus subject areas

  • Engineering(all)

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