A dense La(Sr)Fe(Mn)O3-δ nano-film anode for intermediate-temperature solid oxide fuel cells

Young Wan Ju; Junji Hyodo; Atsushi Inoishi; Shintaro Ida; Tatsumi Ishihara

doi:10.1039/c4ta05664g

A dense La(Sr)Fe(Mn)O_3-δ nano-film anode for intermediate-temperature solid oxide fuel cells

Young Wan Ju, Junji Hyodo, Atsushi Inoishi, Shintaro Ida, Tatsumi Ishihara

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

8 Citations (Scopus)

Abstract

To achieve high power density in intermediate-temperature solid oxide fuel cells (IT-SOFCs), we introduce a dense La(Sr)Fe(Mn)O_3-δ (LSFM) nano-film anode between a Ni-Fe metallic substrate and a LaGaO₃-based oxide electrolyte. Although a three-phase boundary (TPB) is believed to be required for anode active sites, the cell with the LSFM mixed-conductor thin-film anode exhibited much improved power density compared with that of the cell with a simple porous Ni-Fe anode. The maximum power density of the cell with the LSFM film was approximately 3.0 W cm^-2 at 973 K. The improved power density was primarily attributed to the enhanced anodic activity. Furthermore, we observed that the dense LSFM thin-film anode is effective in increasing the fuel utilization of a Ni-Fe metallic anode supported cell. This suggests that a two-phase boundary (anode and gas phase) at the LaFeO₃ perovskite is highly active towards the anodic reaction.

Original language	English
Pages (from-to)	3586-3593
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	7
DOIs	https://doi.org/10.1039/c4ta05664g
Publication status	Published - Feb 21 2015

All Science Journal Classification (ASJC) codes

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

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

Access to Document

10.1039/c4ta05664g

Cite this

@article{d288ec26e84247f9928bb1da4a05dffa,

title = "A dense La(Sr)Fe(Mn)O3-δ nano-film anode for intermediate-temperature solid oxide fuel cells",

abstract = "To achieve high power density in intermediate-temperature solid oxide fuel cells (IT-SOFCs), we introduce a dense La(Sr)Fe(Mn)O3-δ (LSFM) nano-film anode between a Ni-Fe metallic substrate and a LaGaO3-based oxide electrolyte. Although a three-phase boundary (TPB) is believed to be required for anode active sites, the cell with the LSFM mixed-conductor thin-film anode exhibited much improved power density compared with that of the cell with a simple porous Ni-Fe anode. The maximum power density of the cell with the LSFM film was approximately 3.0 W cm-2 at 973 K. The improved power density was primarily attributed to the enhanced anodic activity. Furthermore, we observed that the dense LSFM thin-film anode is effective in increasing the fuel utilization of a Ni-Fe metallic anode supported cell. This suggests that a two-phase boundary (anode and gas phase) at the LaFeO3 perovskite is highly active towards the anodic reaction.",

author = "Ju, {Young Wan} and Junji Hyodo and Atsushi Inoishi and Shintaro Ida and Tatsumi Ishihara",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

month = feb,

day = "21",

doi = "10.1039/c4ta05664g",

language = "English",

volume = "3",

pages = "3586--3593",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

number = "7",

}

TY - JOUR

T1 - A dense La(Sr)Fe(Mn)O3-δ nano-film anode for intermediate-temperature solid oxide fuel cells

AU - Ju, Young Wan

AU - Hyodo, Junji

AU - Inoishi, Atsushi

AU - Ida, Shintaro

AU - Ishihara, Tatsumi

PY - 2015/2/21

Y1 - 2015/2/21

N2 - To achieve high power density in intermediate-temperature solid oxide fuel cells (IT-SOFCs), we introduce a dense La(Sr)Fe(Mn)O3-δ (LSFM) nano-film anode between a Ni-Fe metallic substrate and a LaGaO3-based oxide electrolyte. Although a three-phase boundary (TPB) is believed to be required for anode active sites, the cell with the LSFM mixed-conductor thin-film anode exhibited much improved power density compared with that of the cell with a simple porous Ni-Fe anode. The maximum power density of the cell with the LSFM film was approximately 3.0 W cm-2 at 973 K. The improved power density was primarily attributed to the enhanced anodic activity. Furthermore, we observed that the dense LSFM thin-film anode is effective in increasing the fuel utilization of a Ni-Fe metallic anode supported cell. This suggests that a two-phase boundary (anode and gas phase) at the LaFeO3 perovskite is highly active towards the anodic reaction.

AB - To achieve high power density in intermediate-temperature solid oxide fuel cells (IT-SOFCs), we introduce a dense La(Sr)Fe(Mn)O3-δ (LSFM) nano-film anode between a Ni-Fe metallic substrate and a LaGaO3-based oxide electrolyte. Although a three-phase boundary (TPB) is believed to be required for anode active sites, the cell with the LSFM mixed-conductor thin-film anode exhibited much improved power density compared with that of the cell with a simple porous Ni-Fe anode. The maximum power density of the cell with the LSFM film was approximately 3.0 W cm-2 at 973 K. The improved power density was primarily attributed to the enhanced anodic activity. Furthermore, we observed that the dense LSFM thin-film anode is effective in increasing the fuel utilization of a Ni-Fe metallic anode supported cell. This suggests that a two-phase boundary (anode and gas phase) at the LaFeO3 perovskite is highly active towards the anodic reaction.

UR - http://www.scopus.com/inward/record.url?scp=84922791397&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84922791397&partnerID=8YFLogxK

U2 - 10.1039/c4ta05664g

DO - 10.1039/c4ta05664g

M3 - Article

AN - SCOPUS:84922791397

SN - 2050-7488

VL - 3

SP - 3586

EP - 3593

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 7

ER -