TY - JOUR
T1 - Oxygen vacancy diffusion across cathode/electrolyte interface in solid oxide fuel cells
T2 - An electrochemical phase-field model
AU - Hong, Liang
AU - Hu, Jia Mian
AU - Gerdes, Kirk
AU - Chen, Long Qing
N1 - Funding Information:
L. Hong would like to thank David Mebane and Harry Abernathy for useful discussions. As part of the National Energy Technology Laboratory's research portfolio, this work was conducted under the RES contract DE-FE0004000. The computer simulations were carried out on the LION and cyberstar clusters at the Pennsylvania State University, in part supported by instrumentation (cyberstar Linux cluster) funded by the NSF through Grant OCI-0821527 .
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - An electrochemical phase-field model is developed to study electronic and ionic transport across the cathode/electrolyte interface in solid oxide fuel cells. The influences of local current density and interfacial electrochemical reactions on the transport behaviors are incorporated. This model reproduces two electrochemical features. Nernst equation is satisfied through the thermodynamic equilibriums of the electron and oxygen vacancy. The distributions of charged species around the interface induce charge double layer. Moreover, we verify the nonlinear current/overpotential relationship. This model facilitates the exploration of problems in solid oxide fuel cells, which are associated with transport of species and electrochemical reactions at high operating temperature.
AB - An electrochemical phase-field model is developed to study electronic and ionic transport across the cathode/electrolyte interface in solid oxide fuel cells. The influences of local current density and interfacial electrochemical reactions on the transport behaviors are incorporated. This model reproduces two electrochemical features. Nernst equation is satisfied through the thermodynamic equilibriums of the electron and oxygen vacancy. The distributions of charged species around the interface induce charge double layer. Moreover, we verify the nonlinear current/overpotential relationship. This model facilitates the exploration of problems in solid oxide fuel cells, which are associated with transport of species and electrochemical reactions at high operating temperature.
UR - http://www.scopus.com/inward/record.url?scp=84927925298&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84927925298&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2015.04.090
DO - 10.1016/j.jpowsour.2015.04.090
M3 - Article
AN - SCOPUS:84927925298
SN - 0378-7753
VL - 287
SP - 396
EP - 400
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -
