TY - JOUR
T1 - Micro-tubular flame-assisted fuel cell stacks
AU - Milcarek, Ryan J.
AU - Garrett, Michael J.
AU - Ahn, Jeongmin
N1 - Funding Information:
This material is supported under prime award number DE-EE0006031 from the US Department of Energy and matching funding under award number 53367 from the New York State Energy Research and Development Authority (NYSERDA) and under NYSERDA contract 61736 . This material is also based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. 1247399 .
Publisher Copyright:
© 2016 Hydrogen Energy Publications LLC
PY - 2016/12/14
Y1 - 2016/12/14
N2 - Similar to the original direct flame fuel cell the flame-assisted fuel cell, which has a solid oxide fuel cell (SOFC) operating in combustion exhaust, can potentially simplify the fuel cell system and has applications in micro-Combined Heat and Power. Development and testing of a 9 micro-tubular flame-assisted fuel cell stack is demonstrated in this work. Two different systems are investigated having 1) fixed fuel flow rate and varying air flow rate and 2) fixed total flow rate of air and fuel for the micro-Combined Heat and Power burners. The micro-tubular flame-assisted fuel cell stack achieves a significant performance of 237 mW cm−2 in model methane combustion exhaust at 0.5 V and 790 °C with a lanthanum strontium manganite based cathode. Electrochemical impedance spectroscopy reveals that the fuel cell ohmic losses are unaltered by variations in the exhaust species concentrations while the polarization losses increase with decreasing first-stage combustion fuel-air equivalence ratio. Variations in the combustion exhaust temperature effects both the ohmic and polarization losses.
AB - Similar to the original direct flame fuel cell the flame-assisted fuel cell, which has a solid oxide fuel cell (SOFC) operating in combustion exhaust, can potentially simplify the fuel cell system and has applications in micro-Combined Heat and Power. Development and testing of a 9 micro-tubular flame-assisted fuel cell stack is demonstrated in this work. Two different systems are investigated having 1) fixed fuel flow rate and varying air flow rate and 2) fixed total flow rate of air and fuel for the micro-Combined Heat and Power burners. The micro-tubular flame-assisted fuel cell stack achieves a significant performance of 237 mW cm−2 in model methane combustion exhaust at 0.5 V and 790 °C with a lanthanum strontium manganite based cathode. Electrochemical impedance spectroscopy reveals that the fuel cell ohmic losses are unaltered by variations in the exhaust species concentrations while the polarization losses increase with decreasing first-stage combustion fuel-air equivalence ratio. Variations in the combustion exhaust temperature effects both the ohmic and polarization losses.
KW - Flame-assisted fuel cell
KW - Fuel cell stack
KW - Fuel-rich combustion
KW - Micro-Combined Heat and Power
KW - Micro-tubular solid oxide fuel cell
KW - Solid-oxide fuel cell (SOFC)
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U2 - 10.1016/j.ijhydene.2016.09.005
DO - 10.1016/j.ijhydene.2016.09.005
M3 - Article
AN - SCOPUS:85003480121
SN - 0360-3199
VL - 41
SP - 21489
EP - 21496
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 46
ER -