Electrochemical properties of blockcopolymer templated mesoporous silicates with heteropolyacids clusters

Hui Suk Yun, Makato Kuwabara, Hao Shen Zhou, Itaru Honma

Research output: Contribution to journalConference article

Abstract

In this paper, we have studied a method of loading 12-tungstophosphoric acid (H3PW12O40; PWA) into blockcopolymer templated (designed 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.

Original languageEnglish
Pages (from-to)301-305
Number of pages5
JournalMaterials Research Society Symposium - Proceedings
Volume756
Publication statusPublished - 2003
Externally publishedYes
EventSolid State Ionics 2002 - Boston MA, United States
Duration: 2002 Dec 22002 Dec 5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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