Display Full Text | Download Full Text
1.90 MB PDF file

Degree

Master of Science (MS), Wright State University, Chemistry, 2011.

Abstract

Solid oxide fuel cell (SOFC) technology has attracted great attention due to advantages such as low emissions and high efficiency. In this work, solid oxide fuel cells were fabricated by incorporating functional layers deposited by a novel aerosol jet® printing method. The buffer and cathode layers were printed from gadolinium doped ceria (Ce0.9Gd0.1)O1.95 (CGO) and La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) inks, respectively. The CGO layer was deposited on the sintered electrolyte and then LSCF was subsequently deposited onto the CGO layer. The polarization curves showed a 19% improvement in current density using LSCF as the cathode instead of LSM. Cathode grain size was shown to change by 85% over the sintering temperatures examined. Lastly, the effect that ethyl cellulose additive had on the resulting cathode was determined. It was discovered that the porosity of the microstructure was not correlated to the additive's molecular weight. The actual causes of the cathode porosity may be the order of polymer branching or the ethoxy content of the ethyl cellulose.

Subject Headings

Chemistry

Keywords

solid oxide fuel cell; SOFC; LSCF; cathode; LSM; fuel cell; aerosol jet; aerosol jet deposition; aerosol jet deposition technique; Optomec; AJDT

Committee / Advisors

Eric Fossum, PhD (Advisor)
David Grossie, PhD (Committee Chair)
Rachel Aga, PhD (Committee Chair)

Pages

69p.

Document number: wright1316166020
Permalink: http://rave.ohiolink.edu/etdc/view?acc_num=wright1316166020

This ETD has been downloaded 170 times (through March 2013)