Structures and electrical properties of core-shell composite electrolytes with multi-heterointerfaces

被引：14

作者：

Daiko, Yusuke ^{[1
]}

Katagiri, Kiyofumi

Shimoike, Kazunori

Sakai, Mototsugu

Matsuda, Atsunori

机构：

[1] Toyohashi Univ Technol, Dept Mat Sci, Toyohashi, Aichi 4418580, Japan

[2] Nagoya Univ, Grad Sch Engn, Dept Appl Chem, Nagoya, Aichi 4648603, Japan

来源：

SOLID STATE IONICS | 2007年 / 178卷 / 7-10期

关键词：

proton conductivity; fuel cell; layer-by-layer assembly; phenylsilsesquioxane; sol-gel;

D O I：

10.1016/j.ssi.2007.02.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thermally and chemically stable phenylsilsesquioxane (PhSiO3/2) particles were prepared by sol-gel process, and ultra-thin layers of oppositely charged poly(diallyldimethylammonium chloride) (PDDA) and dodecatungstophosphoric acid (WPA) were alternately deposited on the negative-charged PhSiO3/2 particles via layer-by-layer assembly technique. Hygroscopic property of WPA was remarkably reduced owing to the formation of PDDA/WPA complex. The amount of WPA adsorbed on PhSiO3/2 particles was estimated to be similar to 0.03 (g/g PhSiO3/2). Transparent and monolithic pellet can be obtained from the resultant core-shell particles by pressing. Proton conductivity of WPA-deposited samples increased about 4 orders of magnitude compared with unmodified samples, and reached to about 10(-4) S/cm at 80 degrees C and 80% relative humidity. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：621 / 625

页数：5

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