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Fabrication and Fuel Cell Properties of Gd-Doped CeO2 Micro-Tube Ceramics Reactors Prepared by Gel Precursor

Journal Key Engineering Materials (Volumes 317 - 318)
Volume The Science of Engineering Ceramics III
Edited by T. Ohji, T. Sekino and K. Niihara
Pages 909-912
DOI 10.4028/www.scientific.net/KEM.317-318.909
Citation Yoshinobu Fujishiro et al., 2006, Key Engineering Materials, 317-318, 909
Online since August, 2006
Authors Yoshinobu Fujishiro, Kouich Hamamoto, Ramalinga V. Mangalaraja, Masanobu Awano
Keywords CGO, Low Temperature SOFC, Sol-Gel Process, Tube-Type Reactor
Abstract

Micro-tube type Gd-doped CeO2(CGO) reactor were prepared by hydrolysis of metal acetate gel at room temperature. The size of anode tube was ca. 0.8mm in diameter, and length was 20mm after sintering at 1400°C. DC conductivity of the prepared dense CGO cell consisting of 500nm grains was about 10 Ohm-cm at 600°C. Electrical power density of the micro-tube fuel cell, which was coated both CGO electrolyte and CGO/La0.6Sr0.4Co0.2Fe0.8O3 cathode on the surface of 40vol%NiO-CGO anode tube, was about 900mW/cm2 at 600°C under 30ml/min H2 gas flowing.

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