Open- and closed-circuit study of an intermediate temperature SOFC directly fueled with simulated biogas mixtures

被引：71

作者：

Yentekakis, Ioannis V. ^{[1
]}

机构：

[1] Tech Univ Crete, Lab Phys Chem & Chem Proc, Dept Sci, Khania 73100, Crete, Greece

来源：

JOURNAL OF POWER SOURCES | 2006年 / 160卷 / 01期

关键词：

SOFC; biogas; gadolinia doped ceria; internal dry reforming; carbon dioxide; methane; hydrogen production; Ni cennet; perovskite;

D O I：

10.1016/j.jpowsour.2005.12.069

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 intermediate temperature solid oxide fuel cell (SOFC) based on a gadolinia doped ceria (GDC) solid electrolyte, a Ni(Au)-GDC cermet anode and a La0.54Sr0.46MnO3 perovskite cathode was tested at 600 and 640 degrees C on direct feed of simulated biogas mixtures. The catalytic (open-circuit) rate of the methane dry (CO2)-reforming reaction over Ni(Au)-GDC anode was found to be maximized at about equimolar CH4/CO2 feed ratio. Cell power density up to 60 mW cm(-2), at a cell voltage of 445 mV and a current density of 135 mA cm(-2) at 640 degrees C, has been obtained under closed-circuit cell operation at this optimal feed ratio. Carbon deposition was found not to downgrade cell output characteristics under closed-circuit conditions at constant external loads for similar to 120 h, preceded by open- or closed-circuit operation for similar to 100 additional hours. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：422 / 425

页数：4

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