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

Sung Pil Yoon; Jonghee Han; Suk Woo Nam; Tae Hoon Lim; Seong Ahn Hong

doi:10.1016/j.jpowsour.2004.05.002

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

Sung Pil Yoon, Jonghee Han, Suk Woo Nam, Tae Hoon Lim, Seong Ahn Hong

Research output: Contribution to journal › Article › peer-review

85 Citations (Scopus)

Abstract

A Ni/ yttria-stabilized zirconia (YSZ) cermet anode was modified by coating with samaria-doped ceria (SDC, Sm_0.2Ce_0.8O₂) 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; 8mol% YSZ and thickness of 30μm, and cathode; La _0.85Sr_0.15MnO₃) with the modified anode was about 0.3W/cm² at 700°C in the mixture of methane (25%) and air (75%) as the fuel and air as the oxidant. The cell was operated for 500h without significant degradation of cell performance.

Original language	English
Pages (from-to)	30-36
Number of pages	7
Journal	Journal of Power Sources
Volume	136
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2004.05.002
Publication status	Published - 2004 Sept 10

Keywords

Carbon deposition
Hydrocarbon fuel
Partial oxidation of methane
Solid oxide fuel cell
Surface modification

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2004.05.002

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title = "Improvement of anode performance by surface modification for solid oxide fuel cell running on hydrocarbon fuel",

abstract = "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; 8mol% YSZ and thickness of 30μm, and cathode; La 0.85Sr0.15MnO3) with the modified anode was about 0.3W/cm2 at 700°C in the mixture of methane (25%) and air (75%) as the fuel and air as the oxidant. The cell was operated for 500h without significant degradation of cell performance.",

keywords = "Carbon deposition, Hydrocarbon fuel, Partial oxidation of methane, Solid oxide fuel cell, Surface modification",

author = "Yoon, {Sung Pil} and Jonghee Han and Nam, {Suk Woo} and Lim, {Tae Hoon} and Hong, {Seong Ahn}",

year = "2004",

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doi = "10.1016/j.jpowsour.2004.05.002",

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AU - Yoon, Sung Pil

AU - Han, Jonghee

AU - Nam, Suk Woo

AU - Lim, Tae Hoon

AU - Hong, Seong Ahn

PY - 2004/9/10

Y1 - 2004/9/10

N2 - 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; 8mol% YSZ and thickness of 30μm, and cathode; La 0.85Sr0.15MnO3) with the modified anode was about 0.3W/cm2 at 700°C in the mixture of methane (25%) and air (75%) as the fuel and air as the oxidant. The cell was operated for 500h without significant degradation of cell performance.

AB - 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; 8mol% YSZ and thickness of 30μm, and cathode; La 0.85Sr0.15MnO3) with the modified anode was about 0.3W/cm2 at 700°C in the mixture of methane (25%) and air (75%) as the fuel and air as the oxidant. The cell was operated for 500h without significant degradation of cell performance.

KW - Carbon deposition

KW - Hydrocarbon fuel

KW - Partial oxidation of methane

KW - Solid oxide fuel cell

KW - Surface modification

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

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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