Advances in anodic alumina membranes thin film fuel cell: CsH2PO4 pore-filler as proton conductor at room temperature

被引：37

作者：

Bocchetta, Patrizia ^{[1
]}

Ferraro, Rossella ^{[1
]}

Di Quarto, Francesco ^{[1
]}

机构：

[1] Univ Palermo, Dipartimento Ingn Chim Proc & Mat, I-90128 Palermo, Italy

来源：

JOURNAL OF POWER SOURCES | 2009年 / 187卷 / 01期

关键词：

Cesium hydrogen phosphate; Anodic alumina membranes; Pore filling; Composite proton conductors; Thin film fuel cell; SOLID-ACID; PHASE-TRANSITIONS; COMPOSITE; TRANSPORT;

D O I：

10.1016/j.jpowsour.2008.10.088

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Anodic alumina membranes (AAM) filled with cesium hydrogen phosphate proton conductor have been tested as inorganic composite electrolyte for hydrogen-oxygen thin film (<= 50 mu m)fuel cell (TFFC)working at low temperatures (25 degrees C), low humidity (T-gas = 25 degrees C) and low Pt loading (1 mg cm(-2)). Single module TFFC delivering a peak power of around 15-27 mW cm(-2). with open circuit voltage (OCV) of about 0.9 V and short circuit current density in the range 80-160 mA cm(-2) have been fabricated. At variance with pure solid acid electrolytes showing reproducibility problems due to the scarce mechanical resistance,the presence of porous alumina support allowed to replicate similar fuel cell performances over numerous AAM/CsH2PO4 assemblies. A scale-tip process of the electrodic area has been optimized in order to increase the delivered peak power of AAM thin film fuel cell. Morphological, chemical and electrochemical studies on the alumina composite electrolyte have been carried out by means of scanning electron microscopy, Xray diffractometry, Micro-Raman spectroscopy, DTA/DTG analysis, ac impedance spectroscopy and single fuel cell tests. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：49 / 56

页数：8

共 32 条

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