Optical humidity sensing, proton-conducting sol-gel glass monolith

被引：13
|
作者：
Li, Haibin [1 ]
Jin, Dongliang [1 ]
Yu, Qingchun [1 ]
Tu, Hengyong [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Fuel Cell, Shanghai 200240, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Glass monolith; Sol-gel; Proton conduction; Humidity sensor; Fuel cell; FUEL-CELL ELECTROLYTE; SILICA THIN-FILMS; POROUS SILICA; SENSORS;
D O I：
10.1016/j.jpowsour.2011.01.004
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：
An integrated, crack-free glass monolith is prepared via a modified sol-gel approach. It has an accessible network of channels consisting of anisotropic pores of widths ca. 20-50 nm and lengths ca. 100-250 nm. The glass monolith exhibits a transparency change based on humidity, which is utilized as a basis for optical humidity measurements. On the other hand, the glass monolith shows high proton conduction in humid atmosphere, and its proton conductivity reaches a value of 0.12 S cm(-1) at 30 degrees C and 80% relative humidity. (c) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：3836 / 3840
页数：5
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