Fabrication of anode-supported thin BCZY electrolyte protonic fuel cells using NiO sintering aid

Kan Rong Lee; Chung Jen Tseng; Shian Ching Jang; Jing Chie Lin; Kuan Wen Wang; Jeng-Kuei Chang; Ting Chia Chen; Sheng Wei Lee

doi:10.1016/j.ijhydene.2019.07.097

Fabrication of anode-supported thin BCZY electrolyte protonic fuel cells using NiO sintering aid

Kan Rong Lee, Chung Jen Tseng, Shian Ching Jang, Jing Chie Lin, Kuan Wen Wang, Jeng-Kuei Chang, Ting Chia Chen, Sheng Wei Lee^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

46 Scopus citations

Abstract

A thin and fully dense BaCe_0.6Zr_0.2Y_0.2O_3-δ (BCZY) electrolyte for the use of anode-supported protonic fuel cells has been successfully prepared by spin coating using NiO sintering aid. The effects of NiO addition on the electrolyte microstructures and fuel cell performances are also investigated. An appropriate NiO addition has a significant positive contribution to the densification and grain growth of thin BCZY electrolytes. However, too much NiO addition gives rise to NiO aggregation in BCZY electrolyte and deteriorates the cell performance. The enhanced sintering mechanism can be mainly attributed to the oxygen vacancies generated from the NiO decomposition and bulk diffusion of Ni into BCZY perovskites. The fuel cell with a BCZY-3%NiO electrolyte exhibits the highest maximum power density of ~106.6 mW/cm² at 800 °C among all fuel cells in this study. The electrochemical impedance characteristics of thin BCZY electrolyte fuel cells are further discussed under open circuit conditions.

Original language	English
Pages (from-to)	23784-23792
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	44
Issue number	42
DOIs	https://doi.org/10.1016/j.ijhydene.2019.07.097
State	Published - 3 Sep 2019

Keywords

Electrochemical impedance spectroscopy
Proton-conducting electrolyte
Sintering aid
Solid oxide fuel cells
Spin coating

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10.1016/j.ijhydene.2019.07.097

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@article{98b9c7a09f364610904df5bb7da63c44,

title = "Fabrication of anode-supported thin BCZY electrolyte protonic fuel cells using NiO sintering aid",

abstract = "A thin and fully dense BaCe0.6Zr0.2Y0.2O3-δ (BCZY) electrolyte for the use of anode-supported protonic fuel cells has been successfully prepared by spin coating using NiO sintering aid. The effects of NiO addition on the electrolyte microstructures and fuel cell performances are also investigated. An appropriate NiO addition has a significant positive contribution to the densification and grain growth of thin BCZY electrolytes. However, too much NiO addition gives rise to NiO aggregation in BCZY electrolyte and deteriorates the cell performance. The enhanced sintering mechanism can be mainly attributed to the oxygen vacancies generated from the NiO decomposition and bulk diffusion of Ni into BCZY perovskites. The fuel cell with a BCZY-3%NiO electrolyte exhibits the highest maximum power density of ~106.6 mW/cm2 at 800 °C among all fuel cells in this study. The electrochemical impedance characteristics of thin BCZY electrolyte fuel cells are further discussed under open circuit conditions.",

keywords = "Electrochemical impedance spectroscopy, Proton-conducting electrolyte, Sintering aid, Solid oxide fuel cells, Spin coating",

author = "Lee, {Kan Rong} and Tseng, {Chung Jen} and Jang, {Shian Ching} and Lin, {Jing Chie} and Wang, {Kuan Wen} and Jeng-Kuei Chang and Chen, {Ting Chia} and Lee, {Sheng Wei}",

year = "2019",

month = sep,

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doi = "10.1016/j.ijhydene.2019.07.097",

language = "English",

volume = "44",

pages = "23784--23792",

journal = "International Journal of Hydrogen Energy",

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T1 - Fabrication of anode-supported thin BCZY electrolyte protonic fuel cells using NiO sintering aid

AU - Lee, Kan Rong

AU - Tseng, Chung Jen

AU - Jang, Shian Ching

AU - Lin, Jing Chie

AU - Wang, Kuan Wen

AU - Chang, Jeng-Kuei

AU - Chen, Ting Chia

AU - Lee, Sheng Wei

PY - 2019/9/3

Y1 - 2019/9/3

N2 - A thin and fully dense BaCe0.6Zr0.2Y0.2O3-δ (BCZY) electrolyte for the use of anode-supported protonic fuel cells has been successfully prepared by spin coating using NiO sintering aid. The effects of NiO addition on the electrolyte microstructures and fuel cell performances are also investigated. An appropriate NiO addition has a significant positive contribution to the densification and grain growth of thin BCZY electrolytes. However, too much NiO addition gives rise to NiO aggregation in BCZY electrolyte and deteriorates the cell performance. The enhanced sintering mechanism can be mainly attributed to the oxygen vacancies generated from the NiO decomposition and bulk diffusion of Ni into BCZY perovskites. The fuel cell with a BCZY-3%NiO electrolyte exhibits the highest maximum power density of ~106.6 mW/cm2 at 800 °C among all fuel cells in this study. The electrochemical impedance characteristics of thin BCZY electrolyte fuel cells are further discussed under open circuit conditions.

AB - A thin and fully dense BaCe0.6Zr0.2Y0.2O3-δ (BCZY) electrolyte for the use of anode-supported protonic fuel cells has been successfully prepared by spin coating using NiO sintering aid. The effects of NiO addition on the electrolyte microstructures and fuel cell performances are also investigated. An appropriate NiO addition has a significant positive contribution to the densification and grain growth of thin BCZY electrolytes. However, too much NiO addition gives rise to NiO aggregation in BCZY electrolyte and deteriorates the cell performance. The enhanced sintering mechanism can be mainly attributed to the oxygen vacancies generated from the NiO decomposition and bulk diffusion of Ni into BCZY perovskites. The fuel cell with a BCZY-3%NiO electrolyte exhibits the highest maximum power density of ~106.6 mW/cm2 at 800 °C among all fuel cells in this study. The electrochemical impedance characteristics of thin BCZY electrolyte fuel cells are further discussed under open circuit conditions.

KW - Electrochemical impedance spectroscopy

KW - Proton-conducting electrolyte

KW - Sintering aid

KW - Solid oxide fuel cells

KW - Spin coating

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DO - 10.1016/j.ijhydene.2019.07.097

M3 - Article

AN - SCOPUS:85071054720

SN - 0360-3199

VL - 44

SP - 23784

EP - 23792

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 42

ER -

Fabrication of anode-supported thin BCZY electrolyte protonic fuel cells using NiO sintering aid

Abstract

Keywords

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