Investigation of quality and performance of Cu impregnated NiO-GDC as anode for IT-SOFCs

TY - JOUR

T1 - Investigation of quality and performance of Cu impregnated NiO-GDC as anode for IT-SOFCs

AU - Patil, Sarika P.

AU - Jadhav, L.D.

AU - Chourashiya, Muralidhar

N1 - Publisher Copyright: © 2022 The Author(s)

PY - 2022/3

Y1 - 2022/3

N2 - Ni-based cermet as solid oxide fuel cell (SOFC) anodes suffers from redox instability issues when operated with hydrocarbon as fuel. This paper investigates the Cu impregnated NiO-GDC as anode electrode for intermediate temperature (IT-) SOFCs using structural and morphological characterizations along with the dc conductivity measurement in hydrogen and biogas. The bulk of Cu impregnated NiO-GDC composite and its reduced (heat-treated in H2 at 850 °C for 3 h) counterpart samples were analyzed after exposing different layers within the bulk of samples to different characterization tools. Cu particles are observed at all three layers investigated, suggesting the distribution of Cu in the bulk of composite anode samples. Also, the porous morphology of fabricated samples was decreased with increased depth into the sample. The BSE and EDS characterization show that Cu and Ni particles are distributed within the bulk of the reduced composite anode sample while the Cu particles are largely located in the middle layer. Relatively higher (lower) dc conductivity (activation energy) was observed for the reduced composite anode sample in biogas than that of hydrogen and were 9.9 × 10−3 (0.81 eV) and 4.5 × 10−3 S/cm (0.88 eV), respectively.

AB - Ni-based cermet as solid oxide fuel cell (SOFC) anodes suffers from redox instability issues when operated with hydrocarbon as fuel. This paper investigates the Cu impregnated NiO-GDC as anode electrode for intermediate temperature (IT-) SOFCs using structural and morphological characterizations along with the dc conductivity measurement in hydrogen and biogas. The bulk of Cu impregnated NiO-GDC composite and its reduced (heat-treated in H2 at 850 °C for 3 h) counterpart samples were analyzed after exposing different layers within the bulk of samples to different characterization tools. Cu particles are observed at all three layers investigated, suggesting the distribution of Cu in the bulk of composite anode samples. Also, the porous morphology of fabricated samples was decreased with increased depth into the sample. The BSE and EDS characterization show that Cu and Ni particles are distributed within the bulk of the reduced composite anode sample while the Cu particles are largely located in the middle layer. Relatively higher (lower) dc conductivity (activation energy) was observed for the reduced composite anode sample in biogas than that of hydrogen and were 9.9 × 10−3 (0.81 eV) and 4.5 × 10−3 S/cm (0.88 eV), respectively.

KW - Cu impregnated NiO-GDC

KW - Solid oxide fuel cells

KW - Composite anode

KW - Impregnation method

KW - The dc conductivity in biogas

UR - http://www.scopus.com/inward/record.url?scp=85124211661&partnerID=8YFLogxK

U2 - 10.1016/j.oceram.2022.100230

DO - 10.1016/j.oceram.2022.100230

M3 - 文章

SN - 2666-5395

VL - 9

JO - Open Ceramics

JF - Open Ceramics

M1 - 100230

ER -