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Electrochemical Properties of Blockcopolymer Templated Mesoporous Silicates with Heteropolyacids clusters

Published online by Cambridge University Press:  11 February 2011

Hui Suk Yun ,
Makoto Kuwabara ,
Hao Shen Zhou  and
Itaru Honma
Hui Suk Yun
Affiliation:
Dept. of Materials Science, University of Tokyo, Bunkyo-ku, Tokyo 113–8656, Japan
Makoto Kuwabara
Affiliation:
Dept. of Materials Science, University of Tokyo, Bunkyo-ku, Tokyo 113–8656, Japan
Hao Shen Zhou
Affiliation:
National Institute of Advanced Industrial Science and technology (AIST), 1–1–1 Umezono, Tsukuba, Ibaraki, 305–8568, Japan, E-mail: i.homma@aist.go.jp
Itaru Honma
Affiliation:
National Institute of Advanced Industrial Science and technology (AIST), 1–1–1 Umezono, Tsukuba, Ibaraki, 305–8568, Japan, E-mail: i.homma@aist.go.jp
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Abstract

In this paper, we have studied a method of loading 12-tungstophosphoric acid (H3PW12O40; PWA) into blockcopolymer templated (designated EO20PO70EO20; Pluronic P-123) mesoporous SiO2 framework without a disordering of mesostructure and without remarkable decrease of specific surface area through one-step condensation process. A precursor solution is initially prepared by TEOS (tetraethoxysilane) hydrolyzed with templating polymer (eg. triblock copolymer), and then mixed directly with PWA to condense mesoporous silicate products that incorporate PWA clusters in the framework. Heteropolyanions are possibly incorporated in the framework silicates. Electrochemical properties of these PWA impregnated mesoporous silicates were studied as electrode materials of Li ion battery as well as solid proton conductors.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 756: Symposia EE/FF – Solid-State Ionics – Materials for Fuel Cells and Fuel Processors , 2002 , EE1.10
Copyright
Copyright © Materials Research Society 2003

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References

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