Cu-Fe-Ni nano alloy particles obtained by exsolution from Cu(Ni)Fe2O4 as active anode for SOFCs

研究成果: ジャーナルへの寄稿記事

抄録

The metal exsolution of anodes was studied using spinel oxides of CuFe2O4 for enhancing the anodic activity of electrodes for solid oxide fuel cells (SOFCs) at lower temperatures. Moreover, Ni-doped Cu1-xNixFe2O4 (x = 0.1, 0.2, 0.3, and 0.5; CNFO) spinel oxides were investigated. Although CNFO spinel oxides were decomposed by a reduction atmosphere, decomposed CNFO became a metallic phase with the exsolved nanosized alloy particles, which are composites of Cu-rich Cu-Fe-Ni and Fe-rich Fe-Ni-Cu metals on anodes, investigated using SEM-EDX, TEM-EDX and XRD. According to power generation properties, the exsolved alloy formed from CNFO 0.1 showed the highest MPD of 670 mW cm-2 at 1073 K and 120 mW cm-2 at 873 K. Compared with the Ni-Fe (9 : 1 wt%) alloy anode, CNFO 0.1 showed significantly decreased anodic polarization resistance, and hence, high power density was attributed to nano alloy particles. Therefore, the metal particles on the metallic matrix exsolved from the CNFO spinel oxide are highly effective for active anode catalysts for intermediate temperature operations.

元の言語英語
ページ(範囲)26105-26115
ページ数11
ジャーナルJournal of Materials Chemistry A
7
発行部数45
DOI
出版物ステータス出版済み - 1 1 2019

Fingerprint

Solid oxide fuel cells (SOFC)
Oxides
Anodes
Metals
Energy dispersive spectroscopy
Anodic polarization
Power generation
Transmission electron microscopy
Temperature
Scanning electron microscopy
Electrodes
Catalysts
spinell
Composite materials

All Science Journal Classification (ASJC) codes

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

これを引用

Cu-Fe-Ni nano alloy particles obtained by exsolution from Cu(Ni)Fe2O4 as active anode for SOFCs. / Kang, Byeongsu; Matsuda, Junko; Ishihara, Tatsumi.

:: Journal of Materials Chemistry A, 巻 7, 番号 45, 01.01.2019, p. 26105-26115.

研究成果: ジャーナルへの寄稿記事

@article{02b930662a4e4262b66305185077513e,
title = "Cu-Fe-Ni nano alloy particles obtained by exsolution from Cu(Ni)Fe2O4 as active anode for SOFCs",
abstract = "The metal exsolution of anodes was studied using spinel oxides of CuFe2O4 for enhancing the anodic activity of electrodes for solid oxide fuel cells (SOFCs) at lower temperatures. Moreover, Ni-doped Cu1-xNixFe2O4 (x = 0.1, 0.2, 0.3, and 0.5; CNFO) spinel oxides were investigated. Although CNFO spinel oxides were decomposed by a reduction atmosphere, decomposed CNFO became a metallic phase with the exsolved nanosized alloy particles, which are composites of Cu-rich Cu-Fe-Ni and Fe-rich Fe-Ni-Cu metals on anodes, investigated using SEM-EDX, TEM-EDX and XRD. According to power generation properties, the exsolved alloy formed from CNFO 0.1 showed the highest MPD of 670 mW cm-2 at 1073 K and 120 mW cm-2 at 873 K. Compared with the Ni-Fe (9 : 1 wt{\%}) alloy anode, CNFO 0.1 showed significantly decreased anodic polarization resistance, and hence, high power density was attributed to nano alloy particles. Therefore, the metal particles on the metallic matrix exsolved from the CNFO spinel oxide are highly effective for active anode catalysts for intermediate temperature operations.",
author = "Byeongsu Kang and Junko Matsuda and Tatsumi Ishihara",
year = "2019",
month = "1",
day = "1",
doi = "10.1039/c9ta09482b",
language = "English",
volume = "7",
pages = "26105--26115",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "45",

}

TY - JOUR

T1 - Cu-Fe-Ni nano alloy particles obtained by exsolution from Cu(Ni)Fe2O4 as active anode for SOFCs

AU - Kang, Byeongsu

AU - Matsuda, Junko

AU - Ishihara, Tatsumi

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The metal exsolution of anodes was studied using spinel oxides of CuFe2O4 for enhancing the anodic activity of electrodes for solid oxide fuel cells (SOFCs) at lower temperatures. Moreover, Ni-doped Cu1-xNixFe2O4 (x = 0.1, 0.2, 0.3, and 0.5; CNFO) spinel oxides were investigated. Although CNFO spinel oxides were decomposed by a reduction atmosphere, decomposed CNFO became a metallic phase with the exsolved nanosized alloy particles, which are composites of Cu-rich Cu-Fe-Ni and Fe-rich Fe-Ni-Cu metals on anodes, investigated using SEM-EDX, TEM-EDX and XRD. According to power generation properties, the exsolved alloy formed from CNFO 0.1 showed the highest MPD of 670 mW cm-2 at 1073 K and 120 mW cm-2 at 873 K. Compared with the Ni-Fe (9 : 1 wt%) alloy anode, CNFO 0.1 showed significantly decreased anodic polarization resistance, and hence, high power density was attributed to nano alloy particles. Therefore, the metal particles on the metallic matrix exsolved from the CNFO spinel oxide are highly effective for active anode catalysts for intermediate temperature operations.

AB - The metal exsolution of anodes was studied using spinel oxides of CuFe2O4 for enhancing the anodic activity of electrodes for solid oxide fuel cells (SOFCs) at lower temperatures. Moreover, Ni-doped Cu1-xNixFe2O4 (x = 0.1, 0.2, 0.3, and 0.5; CNFO) spinel oxides were investigated. Although CNFO spinel oxides were decomposed by a reduction atmosphere, decomposed CNFO became a metallic phase with the exsolved nanosized alloy particles, which are composites of Cu-rich Cu-Fe-Ni and Fe-rich Fe-Ni-Cu metals on anodes, investigated using SEM-EDX, TEM-EDX and XRD. According to power generation properties, the exsolved alloy formed from CNFO 0.1 showed the highest MPD of 670 mW cm-2 at 1073 K and 120 mW cm-2 at 873 K. Compared with the Ni-Fe (9 : 1 wt%) alloy anode, CNFO 0.1 showed significantly decreased anodic polarization resistance, and hence, high power density was attributed to nano alloy particles. Therefore, the metal particles on the metallic matrix exsolved from the CNFO spinel oxide are highly effective for active anode catalysts for intermediate temperature operations.

UR - http://www.scopus.com/inward/record.url?scp=85075269834&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075269834&partnerID=8YFLogxK

U2 - 10.1039/c9ta09482b

DO - 10.1039/c9ta09482b

M3 - Article

AN - SCOPUS:85075269834

VL - 7

SP - 26105

EP - 26115

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 45

ER -