Palladium-polyelectrolyte hybrid nanoparticles for hydrogen sensor in fuel cells

Satoshi Ohara; Yoshiharu Hatakeyama; Mitsuo Umetsu; Kazuyoshi Sato; Takashi Naka; Tadafumi Adschiri

doi:10.1016/j.jpowsour.2008.11.106

Palladium-polyelectrolyte hybrid nanoparticles for hydrogen sensor in fuel cells

Satoshi Ohara, Yoshiharu Hatakeyama, Mitsuo Umetsu, Kazuyoshi Sato, Takashi Naka, Tadafumi Adschiri

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We prepared palladium-polyelectrolyte hybrid nanoparticles by using a metallization of polyelectrolyte. In this study, we selected polyacrylic acid (PAA) as a polyelectrolyte and reduced the palladium ions on the PAA by using ascorbic acids in order to form a unique spherically shaped mosslike hybrid nanoparticle. Palladium (Pd) can absorb hydrogen to become PdH_x, and the storage of hydrogen increases the electrical resistance and volume of Pd materials. The use of this material is attracting growing interest as a reliable, cheap, ultracompact, and safe hydrogen sensor for use in fuel cells. We showed the utilization of the Pd-PAA hybrid nanoparticles as a highly sensitive hydrogen sensor that exhibited a switch response depending on volume expansion in a cyclic atmosphere exchange.

Original language	English
Pages (from-to)	367-370
Number of pages	4
Journal	Journal of Power Sources
Volume	193
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2008.11.106
Publication status	Published - 2009 Aug 1

Keywords

Hybrid nanoparticle
Hydrogen sensor
Palladium
Polyacrylic acid
Polyelectrolyte

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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abstract = "We prepared palladium-polyelectrolyte hybrid nanoparticles by using a metallization of polyelectrolyte. In this study, we selected polyacrylic acid (PAA) as a polyelectrolyte and reduced the palladium ions on the PAA by using ascorbic acids in order to form a unique spherically shaped mosslike hybrid nanoparticle. Palladium (Pd) can absorb hydrogen to become PdHx, and the storage of hydrogen increases the electrical resistance and volume of Pd materials. The use of this material is attracting growing interest as a reliable, cheap, ultracompact, and safe hydrogen sensor for use in fuel cells. We showed the utilization of the Pd-PAA hybrid nanoparticles as a highly sensitive hydrogen sensor that exhibited a switch response depending on volume expansion in a cyclic atmosphere exchange.",

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AU - Ohara, Satoshi

AU - Hatakeyama, Yoshiharu

AU - Umetsu, Mitsuo

AU - Sato, Kazuyoshi

AU - Naka, Takashi

AU - Adschiri, Tadafumi

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