TY - JOUR
T1 - Electrical properties of atmospheric plasma-sprayed La 10(SiO 4) 6O 3 electrolyte coatings
AU - Gao, Wei
AU - Li, Wen Ya
AU - Liao, Han Lin
AU - Coddet, Christian
PY - 2011/6
Y1 - 2011/6
N2 - In this present work, La 10(SiO 4) 6O 3 as a promising electrolyte candidate for intermediate temperature solid oxide fuel cells (IT-SOFCs) has been synthesized and its electrical property was investigated as a function of temperature. In order to improve the density and oxide ion conductivity of La 10(SiO 4) 6O 3, the feedstock powder was prepared by sintering the oxide mixture powders at proper sintering temperatures and times. The hexagonal apatite-type ceramic coatings with a typical composition of La 10(SiO 4) 6O 3 were deposited by atmospheric plasma spraying (APS) with different hydrogen flow rates. With increasing hydrogen flow rate oxide ion conductivity successively decreases. The highest ionic conductivity of the dense composite electrolyte coatings reaches a value of 2.4 mS/cm at 900 °C in air, which is comparable to other apatite-type lanthanum silicate (ATLS) conductors.
AB - In this present work, La 10(SiO 4) 6O 3 as a promising electrolyte candidate for intermediate temperature solid oxide fuel cells (IT-SOFCs) has been synthesized and its electrical property was investigated as a function of temperature. In order to improve the density and oxide ion conductivity of La 10(SiO 4) 6O 3, the feedstock powder was prepared by sintering the oxide mixture powders at proper sintering temperatures and times. The hexagonal apatite-type ceramic coatings with a typical composition of La 10(SiO 4) 6O 3 were deposited by atmospheric plasma spraying (APS) with different hydrogen flow rates. With increasing hydrogen flow rate oxide ion conductivity successively decreases. The highest ionic conductivity of the dense composite electrolyte coatings reaches a value of 2.4 mS/cm at 900 °C in air, which is comparable to other apatite-type lanthanum silicate (ATLS) conductors.
KW - apatite-type lanthanum silicate coating
KW - atmospheric plasma spraying
KW - intermediate temperature solid oxide fuel cells
KW - oxide ion conductivity
UR - http://www.scopus.com/inward/record.url?scp=79959543155&partnerID=8YFLogxK
U2 - 10.1007/s11666-011-9625-1
DO - 10.1007/s11666-011-9625-1
M3 - 文献综述
AN - SCOPUS:79959543155
SN - 1059-9630
VL - 20
SP - 888
EP - 891
JO - Journal of Thermal Spray Technology
JF - Journal of Thermal Spray Technology
IS - 4
ER -