In situ densification of gadolinium-doped ceria interlayer by infiltration process in SOFC

Guiyun Wang; Chuan Jia; Zaihong Sun; Ming Chen; Minfang Han

doi:10.1149/09101.1149ecst

In situ densification of gadolinium-doped ceria interlayer by infiltration process in SOFC

Guiyun Wang, Chuan Jia, Zaihong Sun, Ming Chen, Minfang Han^*

^*Corresponding author for this work

Department of Energy Conversion and Storage

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Gadolinium-doped ceria (GDC) interlayer is commonly inserted between electrolyte yttria-stabilized zirconia (YSZ) and cathode La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ (LSCF) to prevent the Sr migration from cathode to electrolyte and improve the stability of the solid oxide fuel cell (SOFC). However, it is difficult to make a dense GDC interlayer during the traditional process. Co, Gd and Ce nitrates solution is used as the infiltration solution to modify and in situ densify the GDC interlayer in this study. The GDC interlayer shows high density when it is pre-sintered at 1175°C and final sintered at 1300°C, and the cell shows high performance and stability, the voltage has little degradation after running for 100 hours at 800°C and 0.5Acm^-2, Sr is not observed at the YSZ/GDC interface.

Original language	English
Journal	ECS Transactions
Volume	91
Issue number	1
Pages (from-to)	1149-1156
Number of pages	8
ISSN	1938-5862
DOIs	https://doi.org/10.1149/09101.1149ecst
Publication status	Published - 2019

Access to Document

10.1149/09101.1149ecst

OpenUrl availability

Full text

Cite this

@article{dbc8dfc31805439a9e89a4514034c2ec,

title = "In situ densification of gadolinium-doped ceria interlayer by infiltration process in SOFC",

abstract = "Gadolinium-doped ceria (GDC) interlayer is commonly inserted between electrolyte yttria-stabilized zirconia (YSZ) and cathode La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) to prevent the Sr migration from cathode to electrolyte and improve the stability of the solid oxide fuel cell (SOFC). However, it is difficult to make a dense GDC interlayer during the traditional process. Co, Gd and Ce nitrates solution is used as the infiltration solution to modify and in situ densify the GDC interlayer in this study. The GDC interlayer shows high density when it is pre-sintered at 1175°C and final sintered at 1300°C, and the cell shows high performance and stability, the voltage has little degradation after running for 100 hours at 800°C and 0.5Acm-2, Sr is not observed at the YSZ/GDC interface.",

author = "Guiyun Wang and Chuan Jia and Zaihong Sun and Ming Chen and Minfang Han",

year = "2019",

doi = "10.1149/09101.1149ecst",

language = "English",

volume = "91",

pages = "1149--1156",

journal = "ECS Transactions",

issn = "1938-5862",

publisher = "The Electrochemical Society",

number = "1",

}

TY - JOUR

T1 - In situ densification of gadolinium-doped ceria interlayer by infiltration process in SOFC

AU - Wang, Guiyun

AU - Jia, Chuan

AU - Sun, Zaihong

AU - Chen, Ming

AU - Han, Minfang

PY - 2019

Y1 - 2019

N2 - Gadolinium-doped ceria (GDC) interlayer is commonly inserted between electrolyte yttria-stabilized zirconia (YSZ) and cathode La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) to prevent the Sr migration from cathode to electrolyte and improve the stability of the solid oxide fuel cell (SOFC). However, it is difficult to make a dense GDC interlayer during the traditional process. Co, Gd and Ce nitrates solution is used as the infiltration solution to modify and in situ densify the GDC interlayer in this study. The GDC interlayer shows high density when it is pre-sintered at 1175°C and final sintered at 1300°C, and the cell shows high performance and stability, the voltage has little degradation after running for 100 hours at 800°C and 0.5Acm-2, Sr is not observed at the YSZ/GDC interface.

AB - Gadolinium-doped ceria (GDC) interlayer is commonly inserted between electrolyte yttria-stabilized zirconia (YSZ) and cathode La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) to prevent the Sr migration from cathode to electrolyte and improve the stability of the solid oxide fuel cell (SOFC). However, it is difficult to make a dense GDC interlayer during the traditional process. Co, Gd and Ce nitrates solution is used as the infiltration solution to modify and in situ densify the GDC interlayer in this study. The GDC interlayer shows high density when it is pre-sintered at 1175°C and final sintered at 1300°C, and the cell shows high performance and stability, the voltage has little degradation after running for 100 hours at 800°C and 0.5Acm-2, Sr is not observed at the YSZ/GDC interface.

U2 - 10.1149/09101.1149ecst

DO - 10.1149/09101.1149ecst

M3 - Journal article

SN - 1938-5862

VL - 91

SP - 1149

EP - 1156

JO - ECS Transactions

JF - ECS Transactions

IS - 1

ER -

In situ densification of gadolinium-doped ceria interlayer by infiltration process in SOFC

Abstract

Access to Document

OpenUrl availability

Fingerprint

Cite this