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Fast Proton Conductors from Inorganic-Organic Composites: I. Amorphous Phosphate-Nafion and Silicophosphate-PMA/PWA Hybrids

Published online by Cambridge University Press:  10 February 2011

Yong-Il Park ,
Jae-Dong Kim  and
Masayuki Nagai
Yong-Il Park
Affiliation:
Advanced Research Center for Energy and Environment, Musashi Institute of Technology, 1–28–1 Tamazutsumi, Setagaya-ku, Tokyo 158–8557, Japan
Jae-Dong Kim
Affiliation:
Advanced Research Center for Energy and Environment, Musashi Institute of Technology, 1–28–1 Tamazutsumi, Setagaya-ku, Tokyo 158–8557, Japan
Masayuki Nagai
Affiliation:
Advanced Research Center for Energy and Environment, Musashi Institute of Technology, 1–28–1 Tamazutsumi, Setagaya-ku, Tokyo 158–8557, Japan
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Abstract

A drastic increase of electrical conductivity was observed in the composite of amorphous phosphate and ion-exchange resins (Nafion) as phosphorus concentration increased. Incorporation of amorphous phosphate into Nafion caused a large increase of conductivity to about 4×10−1S/cm at 23°C. However, the fabricated composite showed very low chemical stability.

A high proton conductivity was also observed in a new inorganic-organic hybrids through incorporating PMA(molibdo-phosphoric acid)/PWA(tungsto-phosphoric acid) as a proton source in amorphous silicophosphate gel structure. Obtained gels were homogeneous and chemically stable. Resulting proton conductivity is very high (up to 5.5×10−3S/cm) compared to those of silicophosphate gels.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 600: Symposium FF – Electroactive Polymers , 1999 , 299
Copyright
Copyright © Materials Research Society 2000

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