Polarization resistance of ceria-containing fuel electrodes in solid oxide cells studied by impedance and DRT analysis

Naoki Endo; Takuro Fukumoto; Yuya Tachikawa; Stephen Matthew Lyth; Junko Matsuda; Kazunari Sasaki

doi:10.1149/10911.0003ecst

Polarization resistance of ceria-containing fuel electrodes in solid oxide cells studied by impedance and DRT analysis

Naoki Endo, Takuro Fukumoto, Yuya Tachikawa, Stephen Matthew Lyth, Junko Matsuda, Kazunari Sasaki

Chemical And Process Engineering

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

Abstract

Solid oxide electrolysis cells (SOECs) can be used to perform steam electrolysis in a process which is the reverse of power generation using a solid oxide fuel cell (SOFCs). They are capable of highly efficient hydrogen production. In this study, various model fuel electrode materials were compared and evaluated over a wide range of current densities in both SOFC and SOEC modes. Here, we prepared three types of cells: (i) with a conventional Ni-scandia-stabilized-zirconia (Ni-ScSZ) cermet fuel electrode, (ii) with a Ni-gadolinia-doped ceria (Gd0.1Ce0.9O2, Ni-GDC) cermet fuel electrode, and (iii) with a Ni-GDC co-impregnated fuel electrode fabricated by the co-impregnation method. The electrode reactions are characterized through measurements of electrochemical impedance spectra (EIS) and subsequent analysis of distribution of relaxation times (DRT). The results suggest that the use of mixed ionic and electronic conductor GDC as a fuel electrode material is advantageous especially in SOEC operation mode.

Original language	English
Pages (from-to)	3-13
Number of pages	11
Journal	ECS Transactions
Volume	109
Issue number	11
DOIs	https://doi.org/10.1149/10911.0003ecst
Publication status	Published - 31 Oct 2022
Event	242nd ECS Meeting - Hilton Atlanta, Atlanta, United States Duration: 9 Oct 2022 → 13 Oct 2022 https://www.electrochem.org/242/

Keywords

solid oxide electrolysis cells
steam electrolysis
solid oxide fuel cell (SOFC)
hydrogen production

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10.1149/10911.0003ecst

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title = "Polarization resistance of ceria-containing fuel electrodes in solid oxide cells studied by impedance and DRT analysis",

abstract = "Solid oxide electrolysis cells (SOECs) can be used to perform steam electrolysis in a process which is the reverse of power generation using a solid oxide fuel cell (SOFCs). They are capable of highly efficient hydrogen production. In this study, various model fuel electrode materials were compared and evaluated over a wide range of current densities in both SOFC and SOEC modes. Here, we prepared three types of cells: (i) with a conventional Ni-scandia-stabilized-zirconia (Ni-ScSZ) cermet fuel electrode, (ii) with a Ni-gadolinia-doped ceria (Gd0.1Ce0.9O2, Ni-GDC) cermet fuel electrode, and (iii) with a Ni-GDC co-impregnated fuel electrode fabricated by the co-impregnation method. The electrode reactions are characterized through measurements of electrochemical impedance spectra (EIS) and subsequent analysis of distribution of relaxation times (DRT). The results suggest that the use of mixed ionic and electronic conductor GDC as a fuel electrode material is advantageous especially in SOEC operation mode.",

keywords = "solid oxide electrolysis cells, steam electrolysis, solid oxide fuel cell (SOFC), hydrogen production",

author = "Naoki Endo and Takuro Fukumoto and Yuya Tachikawa and Lyth, {Stephen Matthew} and Junko Matsuda and Kazunari Sasaki",

year = "2022",

month = oct,

day = "31",

doi = "10.1149/10911.0003ecst",

language = "English",

volume = "109",

pages = "3--13",

journal = "ECS Transactions",

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note = "242nd ECS Meeting ; Conference date: 09-10-2022 Through 13-10-2022",

url = "https://www.electrochem.org/242/",

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TY - JOUR

T1 - Polarization resistance of ceria-containing fuel electrodes in solid oxide cells studied by impedance and DRT analysis

AU - Endo, Naoki

AU - Fukumoto, Takuro

AU - Tachikawa, Yuya

AU - Lyth, Stephen Matthew

AU - Matsuda, Junko

AU - Sasaki, Kazunari

PY - 2022/10/31

Y1 - 2022/10/31

N2 - Solid oxide electrolysis cells (SOECs) can be used to perform steam electrolysis in a process which is the reverse of power generation using a solid oxide fuel cell (SOFCs). They are capable of highly efficient hydrogen production. In this study, various model fuel electrode materials were compared and evaluated over a wide range of current densities in both SOFC and SOEC modes. Here, we prepared three types of cells: (i) with a conventional Ni-scandia-stabilized-zirconia (Ni-ScSZ) cermet fuel electrode, (ii) with a Ni-gadolinia-doped ceria (Gd0.1Ce0.9O2, Ni-GDC) cermet fuel electrode, and (iii) with a Ni-GDC co-impregnated fuel electrode fabricated by the co-impregnation method. The electrode reactions are characterized through measurements of electrochemical impedance spectra (EIS) and subsequent analysis of distribution of relaxation times (DRT). The results suggest that the use of mixed ionic and electronic conductor GDC as a fuel electrode material is advantageous especially in SOEC operation mode.

AB - Solid oxide electrolysis cells (SOECs) can be used to perform steam electrolysis in a process which is the reverse of power generation using a solid oxide fuel cell (SOFCs). They are capable of highly efficient hydrogen production. In this study, various model fuel electrode materials were compared and evaluated over a wide range of current densities in both SOFC and SOEC modes. Here, we prepared three types of cells: (i) with a conventional Ni-scandia-stabilized-zirconia (Ni-ScSZ) cermet fuel electrode, (ii) with a Ni-gadolinia-doped ceria (Gd0.1Ce0.9O2, Ni-GDC) cermet fuel electrode, and (iii) with a Ni-GDC co-impregnated fuel electrode fabricated by the co-impregnation method. The electrode reactions are characterized through measurements of electrochemical impedance spectra (EIS) and subsequent analysis of distribution of relaxation times (DRT). The results suggest that the use of mixed ionic and electronic conductor GDC as a fuel electrode material is advantageous especially in SOEC operation mode.

KW - solid oxide electrolysis cells

KW - steam electrolysis

KW - solid oxide fuel cell (SOFC)

KW - hydrogen production

U2 - 10.1149/10911.0003ecst

DO - 10.1149/10911.0003ecst

M3 - Conference Contribution

AN - SCOPUS:85140783801

SN - 1938-5862

VL - 109

SP - 3

EP - 13

JO - ECS Transactions

JF - ECS Transactions

IS - 11

T2 - 242nd ECS Meeting

Y2 - 9 October 2022 through 13 October 2022

ER -

Polarization resistance of ceria-containing fuel electrodes in solid oxide cells studied by impedance and DRT analysis

Abstract

Keywords

UN SDGs

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