Fabrication, Performance, and Model for Proton Conductive Solid Oxide Fuel Cell
Author(s) -
ChihLong Tsai,
V. Hugo Schmidt
Publication year - 2011
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1.3596361
Subject(s) - cathode , solid oxide fuel cell , anode , electrolyte , oxide , materials science , partial pressure , electrical conductor , electrochemistry , chemical engineering , proton exchange membrane fuel cell , electrolysis , triple phase boundary , current density , analytical chemistry (journal) , fuel cells , electrode , chemistry , composite material , oxygen , metallurgy , organic chemistry , physics , engineering , quantum mechanics
Ba Ce0:8Y0:2 ð ÞO3 d anode-supported proton conductive solid oxide fuel cells (H-SOFC) were fabricated and tested under different H2 and O2 partial pressures and temperatures. An electrochemical model developed from Boltzmann statistics was derived to study the VðiÞ of the H-SOFC and proton conductive solid oxide electrolyzer (H-SOEC). Our model has successfully fit the VðiÞ curves to our variety of H2/O2 partial pressure expermental data with only one adjustable parameter. By using the model, the parametric analyses suggest the major possible and easiest way to improve the already good performance of the H-SOFC is reducing its electrolyte thickness. Other than that, the performance of H-SOFC is mostly restricted by the attempt current density c, which means the cathode of the H-SOFC limits the performance of the whole cell. The H-SOFC performance can be enhanced by carefully engineering its cathode to increase its triple phase boundaries or finding a cathode material that enables more O2 molecules to be adsorbed and dissociate into available O atoms on the cathode surface. VC 2011 The Electrochemical Society. [DOI: 10.1149/1.3596361] All rights reserved.
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