Preparation of Ni-GDC powders by the solution reduction method using hydrazine and its electrical properties

Sun Jung Kim, Kang Min Kim, Pyeong Seok Cho, Yoon Ho Cho, Choong Yong Lee, Seung Young Park, Yun Chan Kang, Jong Heun Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Ni-GDC (gadolinia-doped ceria) composite powders, the anode material for the application of solid oxide fuel cells, were prepared by a solution reduction method using hydrazine. The distribution of Ni particles in the composite powders was homogeneous. The Ni-GDC powders were sintered at 1400 °C for 2 h and then reduced at 800 °C for 24 h in 3 % H2. The percolation limit of Ni of the sintered composite was 20 vol%, which was significantly lower than these values in the literature (30-35 vol%). The marked decrease of percolation limit is attributed to the small size of the Ni particles and the high degree of dispersion. The hydrazine method suggests a facile chemical route to prepare well-dispersed Ni-GDC composite powders.

Original languageEnglish
Pages (from-to)660-663
Number of pages4
JournalKorean Journal of Materials Research
Volume18
Issue number12
DOIs
Publication statusPublished - 2008 Dec 1

Fingerprint

hydrazine
Hydrazine
Powders
Electric properties
Composite materials
Gadolinium
Cerium compounds
Solid oxide fuel cells (SOFC)
Anodes

Keywords

  • Anode
  • Hydrazine reduction
  • Ni-GDC
  • SOFC

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Preparation of Ni-GDC powders by the solution reduction method using hydrazine and its electrical properties. / Kim, Sun Jung; Kim, Kang Min; Cho, Pyeong Seok; Cho, Yoon Ho; Lee, Choong Yong; Park, Seung Young; Kang, Yun Chan; Lee, Jong Heun.

In: Korean Journal of Materials Research, Vol. 18, No. 12, 01.12.2008, p. 660-663.

Research output: Contribution to journalArticle

Kim, Sun Jung ; Kim, Kang Min ; Cho, Pyeong Seok ; Cho, Yoon Ho ; Lee, Choong Yong ; Park, Seung Young ; Kang, Yun Chan ; Lee, Jong Heun. / Preparation of Ni-GDC powders by the solution reduction method using hydrazine and its electrical properties. In: Korean Journal of Materials Research. 2008 ; Vol. 18, No. 12. pp. 660-663.
@article{7e45ff0b4c9e4857891f4293adfd043d,
title = "Preparation of Ni-GDC powders by the solution reduction method using hydrazine and its electrical properties",
abstract = "Ni-GDC (gadolinia-doped ceria) composite powders, the anode material for the application of solid oxide fuel cells, were prepared by a solution reduction method using hydrazine. The distribution of Ni particles in the composite powders was homogeneous. The Ni-GDC powders were sintered at 1400 °C for 2 h and then reduced at 800 °C for 24 h in 3 {\%} H2. The percolation limit of Ni of the sintered composite was 20 vol{\%}, which was significantly lower than these values in the literature (30-35 vol{\%}). The marked decrease of percolation limit is attributed to the small size of the Ni particles and the high degree of dispersion. The hydrazine method suggests a facile chemical route to prepare well-dispersed Ni-GDC composite powders.",
keywords = "Anode, Hydrazine reduction, Ni-GDC, SOFC",
author = "Kim, {Sun Jung} and Kim, {Kang Min} and Cho, {Pyeong Seok} and Cho, {Yoon Ho} and Lee, {Choong Yong} and Park, {Seung Young} and Kang, {Yun Chan} and Lee, {Jong Heun}",
year = "2008",
month = "12",
day = "1",
doi = "10.3740/MRSK.2008.18.12.660",
language = "English",
volume = "18",
pages = "660--663",
journal = "Korean Journal of Materials Research",
issn = "1225-0562",
publisher = "The Korea Federation of Science and Technology",
number = "12",

}

TY - JOUR

T1 - Preparation of Ni-GDC powders by the solution reduction method using hydrazine and its electrical properties

AU - Kim, Sun Jung

AU - Kim, Kang Min

AU - Cho, Pyeong Seok

AU - Cho, Yoon Ho

AU - Lee, Choong Yong

AU - Park, Seung Young

AU - Kang, Yun Chan

AU - Lee, Jong Heun

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Ni-GDC (gadolinia-doped ceria) composite powders, the anode material for the application of solid oxide fuel cells, were prepared by a solution reduction method using hydrazine. The distribution of Ni particles in the composite powders was homogeneous. The Ni-GDC powders were sintered at 1400 °C for 2 h and then reduced at 800 °C for 24 h in 3 % H2. The percolation limit of Ni of the sintered composite was 20 vol%, which was significantly lower than these values in the literature (30-35 vol%). The marked decrease of percolation limit is attributed to the small size of the Ni particles and the high degree of dispersion. The hydrazine method suggests a facile chemical route to prepare well-dispersed Ni-GDC composite powders.

AB - Ni-GDC (gadolinia-doped ceria) composite powders, the anode material for the application of solid oxide fuel cells, were prepared by a solution reduction method using hydrazine. The distribution of Ni particles in the composite powders was homogeneous. The Ni-GDC powders were sintered at 1400 °C for 2 h and then reduced at 800 °C for 24 h in 3 % H2. The percolation limit of Ni of the sintered composite was 20 vol%, which was significantly lower than these values in the literature (30-35 vol%). The marked decrease of percolation limit is attributed to the small size of the Ni particles and the high degree of dispersion. The hydrazine method suggests a facile chemical route to prepare well-dispersed Ni-GDC composite powders.

KW - Anode

KW - Hydrazine reduction

KW - Ni-GDC

KW - SOFC

UR - http://www.scopus.com/inward/record.url?scp=69949123907&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69949123907&partnerID=8YFLogxK

U2 - 10.3740/MRSK.2008.18.12.660

DO - 10.3740/MRSK.2008.18.12.660

M3 - Article

AN - SCOPUS:69949123907

VL - 18

SP - 660

EP - 663

JO - Korean Journal of Materials Research

JF - Korean Journal of Materials Research

SN - 1225-0562

IS - 12

ER -