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Fabrication and Performance of Impregnated Ni Anodes of Solid Oxide Fuel Cells
Author(s) -
Jiang San Ping,
Zhang Sam,
Zhen Yong Da,
Wang Wei
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00362.x
Subject(s) - cermet , materials science , anode , yttria stabilized zirconia , oxide , sintering , solid oxide fuel cell , chemical engineering , fabrication , fuel cells , polarization (electrochemistry) , electrode , ceramic , metallurgy , cubic zirconia , chemistry , medicine , alternative medicine , pathology , engineering
Y 2 O 3 ‐stabilized ZrO 2 (YSZ) and Gd‐doped CeO 2 (GDC) oxide impregnated Ni was investigated and developed as anodes of solid oxide fuel cells. Performance of the Ni anodes for the H 2 oxidation reaction was substantially enhanced after the impregnation of submicrometer (100–300 nm) YSZ and GDC oxide particles. After impregnation of 1.7 mg/cm 2 GDC (∼8.5 vol% GDC), the electrode polarization resistance dropped to 0.71 Ω·cm 2 at 800°C, close to 0.24 Ω·cm 2 reported on good Ni (50 vol%)/YSZ (50 vol%) cermet anodes at the same temperature. The results demonstrated that ion or wet impregnation is an effective process to introduce ionic conducting and catalytic active nano‐sized YSZ and GDC phases into stable and porous Ni electronic network structure without the high temperature sintering process.