TY - GEN
T1 - Structural and electrochemical studies on thin-film yttria-doped zirconia electrolytes for microscale solid oxide fuel cells
AU - Johnson, Alex C.
AU - Ramanathan, Shriram
PY - 2009
Y1 - 2009
N2 - We report in-plane and through-plane conductivity measurements of dense YSZ films varying in thickness from 20 to 200 nm. In-plane measurements were performed on YSZ films grown on silicon wafers coated with SiO2 or Si3N4. Micro-fabricated strips with Pt electrodes in various geometries were used to obtain conductivity as a function of temperature from 200 - 600 °C in a custom-designed micro-probe station. These films have activation energies, which vary from 0.77 to 1.09 eV. Their absolute conductivity is lower compared with other reports. Through-plane and fuel cell measurements were performed by depositing YSZ on a nitrided silicon wafer, then etching through the wafer and depositing porous platinum electrodes on both sides [6,7]. We discuss the electrochemical conduction studies in detail along with fuel cell performance and correlation with electrode microstructure.
AB - We report in-plane and through-plane conductivity measurements of dense YSZ films varying in thickness from 20 to 200 nm. In-plane measurements were performed on YSZ films grown on silicon wafers coated with SiO2 or Si3N4. Micro-fabricated strips with Pt electrodes in various geometries were used to obtain conductivity as a function of temperature from 200 - 600 °C in a custom-designed micro-probe station. These films have activation energies, which vary from 0.77 to 1.09 eV. Their absolute conductivity is lower compared with other reports. Through-plane and fuel cell measurements were performed by depositing YSZ on a nitrided silicon wafer, then etching through the wafer and depositing porous platinum electrodes on both sides [6,7]. We discuss the electrochemical conduction studies in detail along with fuel cell performance and correlation with electrode microstructure.
UR - http://www.scopus.com/inward/record.url?scp=70349917822&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349917822&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9780791843239
T3 - 2008 Proceedings of 3rd Energy Nanotechnology International Conference, ENIC 2008
SP - 23
EP - 24
BT - 2008 Proceedings of 3rd Energy Nanotechnology International Conference, ENIC 2008
T2 - 2008 3rd Energy Nanotechnology International Conference, ENIC 2008
Y2 - 10 August 2008 through 14 August 2008
ER -