View Full Document

TTERNED NICKEL ANODE STABILITY IN SOFC ENVIRONMENTS



View the full content.
View Full Document
View Full Document

4 views

Unformatted text preview:

ABSTRACT Title of thesis PATTERNED NICKEL ANODE STABILITY IN SOFC ENVIRONMENTS WITH H2 CO AND CH4 FUEL FEEDS Benjamin Paul Becker Master of Science 2005 Directed By Professor Gregory S Jackson Department of Mechanical Engineering Single cell solid oxide fuel cells supported on single crystal YSZ electrolyteswith patterned Nianode s fabricated through sputter deposition and photolithographic techniques and with porous LSM YSZ cermet cathodes were tested electrochemically to assess the stability of the Ni anodes in SOFC environments Anode stability and electrochemical performance for H2 CO and CH4 electrochemical oxidation were characterized at cell temperatures between 750 C and 800 C under humidified PH20 Pfuel 0 05 conditions Changes in performance of anodes polarized by typical working fuel cell overpotentials 100 200 mV were compared to anodes kept at open circuit conditions An increase in surface roughness was much greater for the polarized anodes than those kept under open circuit conditions Electrochemical impedance spectroscopy and sweep voltammetry over 10 continuous hours of testing consistently showed constant performance for the polarized anodes and a drop in performance for the open circuit anodes PATTERNED NICKEL ANODE STABILITY IN SOFC ENVIRONMENTS WITH H2 CO AND CH4 FUEL FEEDS By Benjamin Paul Becker Thesis submitted to the Faculty of the Graduate School of the University of Maryland College Park in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering 2005 Advisory Committee Assistant Professor Bao Yang Chair Associate Professor Gregory S Jackson Professor Michael R Zachariah Copyright by Benjamin Paul Becker 2005 Acknowledgements I would like to thank my advisor Prof Gregory S Jackson for his support and guidance throughout the production of this thesis and my time as a graduate student He dedicated time and effort much more than expected to listen to my difficulties and help me learn and succeed His



Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view TTERNED NICKEL ANODE STABILITY IN SOFC ENVIRONMENTS and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view TTERNED NICKEL ANODE STABILITY IN SOFC ENVIRONMENTS and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?