Effect of Gd infiltration on NiO-CeO2 anode substrates for intermediate-temperature solid oxide fuel cells

Inyoung Jang; Chanho Kim; Sungmin Kim; Heesung Yoon

doi:10.1016/j.ceramint.2017.04.070

Effect of Gd infiltration on NiO-CeO₂ anode substrates for intermediate-temperature solid oxide fuel cells

Inyoung Jang
, Chanho Kim
, Sungmin Kim
, Heesung Yoon

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

8 Scopus citations

Abstract

In this study, solid oxide fuel cells (SOFCs) were fabricated using cerium oxide in the anode support layer (ASL) instead of gadolinium-doped ceria (GDC). To compensate for the deficiency in ionic conductivity and catalytic activity of CeO₂, a gadolinium nitrate solution was infiltrated in the ASL before sintering at 1450 °C. The ohmic and polarization resistance of the cell were reduced upon Gd-nitrate infiltration, which also increased the sinterability of the ASL. However, excessive infiltration was found to degrade the electrochemical properties of the cell. Therefore, the conditions for infiltration were optimized in this study. The peak power density of the cell after Gd-nitrate infiltration was 0.662 W, 68% higher than that of the reference cell without Gd-nitrate infiltration.

Original language	English
Pages (from-to)	9552-9558
Number of pages	7
Journal	Ceramics International
Volume	43
Issue number	12
DOIs	https://doi.org/10.1016/j.ceramint.2017.04.070
State	Published - Aug 15 2017
Externally published	Yes

Funding

This work was supported by the New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and was granted financial resources by the Ministry of Trade, Industry & Energy, Republic of Korea (20153030031480).

Keywords

Ceramic materials
Cost-effective
GDC
Infiltration
Intermediate-temperature SOFC
Solid oxide fuel cell

Access to Document

10.1016/j.ceramint.2017.04.070

Cite this

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title = "Effect of Gd infiltration on NiO-CeO2 anode substrates for intermediate-temperature solid oxide fuel cells",

abstract = "In this study, solid oxide fuel cells (SOFCs) were fabricated using cerium oxide in the anode support layer (ASL) instead of gadolinium-doped ceria (GDC). To compensate for the deficiency in ionic conductivity and catalytic activity of CeO2, a gadolinium nitrate solution was infiltrated in the ASL before sintering at 1450 °C. The ohmic and polarization resistance of the cell were reduced upon Gd-nitrate infiltration, which also increased the sinterability of the ASL. However, excessive infiltration was found to degrade the electrochemical properties of the cell. Therefore, the conditions for infiltration were optimized in this study. The peak power density of the cell after Gd-nitrate infiltration was 0.662 W, 68\% higher than that of the reference cell without Gd-nitrate infiltration.",

keywords = "Ceramic materials, Cost-effective, GDC, Infiltration, Intermediate-temperature SOFC, Solid oxide fuel cell",

author = "Inyoung Jang and Chanho Kim and Sungmin Kim and Heesung Yoon",

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AU - Jang, Inyoung

AU - Kim, Chanho

AU - Kim, Sungmin

AU - Yoon, Heesung

PY - 2017/8/15

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AB - In this study, solid oxide fuel cells (SOFCs) were fabricated using cerium oxide in the anode support layer (ASL) instead of gadolinium-doped ceria (GDC). To compensate for the deficiency in ionic conductivity and catalytic activity of CeO2, a gadolinium nitrate solution was infiltrated in the ASL before sintering at 1450 °C. The ohmic and polarization resistance of the cell were reduced upon Gd-nitrate infiltration, which also increased the sinterability of the ASL. However, excessive infiltration was found to degrade the electrochemical properties of the cell. Therefore, the conditions for infiltration were optimized in this study. The peak power density of the cell after Gd-nitrate infiltration was 0.662 W, 68% higher than that of the reference cell without Gd-nitrate infiltration.

KW - Ceramic materials

KW - Cost-effective

KW - GDC

KW - Infiltration

KW - Intermediate-temperature SOFC

KW - Solid oxide fuel cell

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