Improvement of anode performance by surface modification for solid oxide fuel cell running on hydrocarbon fuel

被引：88

作者：

Yoon, SP ^{[1
]}

Han, J ^{[1
]}

Nam, SW ^{[1
]}

Lim, TH ^{[1
]}

Hong, SA ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Fuel Cell Res Ctr, Seoul 136791, South Korea

来源：

JOURNAL OF POWER SOURCES | 2004年 / 136卷 / 01期

关键词：

solid oxide fuel cell; surface modification; hydrocarbon fuel; carbon deposition; partial oxidation of methane;

D O I：

10.1016/j.jpowsour.2004.05.002

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：

A Ni/ yttria-stabilized zirconia (YSZ) cermet anode was modified by coating with samaria-doped ceria. (SDC, SM0.2Ce0.8O2) sol within the pores of the anode for a solid oxide fuel cell (SOFC) running on hydrocarbon fuel. The surface modification of Ni/YSZ anode resulted in an increase of structural stability and enlargement of the triple phase boundary (TPB), which can serve as a catalytic reaction site for oxidation of carbon or carbon monoxide. Consequently, the SDC coating on the pores of anode made it possible to have good stability for long-term operation due to low carbon deposition and nickel sintering. The maximum power density of an anode-supported cell (electrolyte; 8 mol% YSZ and thickness of 30 mum, and cathode; La0.85Sr0.15MnO3) with the modified anode was about 0.3 W/cm(2) at 700degreesC in the mixture of methane (25%) and air (75%) as the fuel and air as the oxidant. The cell was operated for 500 h without significant degradation of cell performance. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：30 / 36

页数：7

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