We have developed a novel and highly effective electrode-supported solid oxide fuel cell (SOFC) with honeycomb structure for intermediate temperature operation. Honeycomb-supported SOFC is known as one of the most compact SOFCs due to the large electrode area per unit volume, which is attractive with regard to space saving and cost reduction. In this study, we summarized the design of the channel shape, size, and sequence using numerical simulation and technologies to realize the designed honeycomb SOFC fabrication. The calculation results showed that the wall thickness and the channel size of the honeycomb had to be less than 0.22 mm and more than 0.3 mm, respectively, for the sufficient net channel surface and the acceptable pressure drop. Also, a cathode-honeycomb-supported SOFC can be the more efficient form with lower current collection resistance, as compared with the anode-supported type. The actual fabricated honeycomb SOFC exhibited a high volumetric power density above $1 W/cm3$ at $650°C$ under wet $H2$ fuel flow.

1.
Kilbride
,
I. P.
, 1996, “
Preparation and Properties of Small Diameter Tubular Solid Oxide Fuel Cells for Rapid Start-Up
,”
J. Power Sources
0378-7753,
61
, pp.
167
171
.
2.
Kendall
,
K.
, and
Palin
,
M.
, 1998, “
A Small Solid Oxide Fuel Cell Demonstrator for Microelectronic Applications
,”
J. Power Sources
0378-7753,
71
, pp.
268
270
.
3.
Sammes
,
N. M.
,
Du
,
Y.
, and
Bove
,
R.
, 2005, “
Design and Fabrication of a 100W Anode Supported Micro-Tubular SOFC Stack
,”
J. Power Sources
0378-7753,
145
, pp.
428
434
.
4.
Avila
,
P.
,
Montes
,
M.
, and
Miró
,
E. E.
, 2005, “
Monolithic Reactors for Environmental Applications: A Review on Preparation Technologies
,”
Chem. Eng. J.
0300-9467,
109
, pp.
11
36
.
5.
Wetzko
,
M.
,
Belzner
,
A.
,
Rohr
,
F. J.
, and
Harbach
,
F.
, 1999, “
Solid Oxide Fuel Cell Stacks Using Extruded Honeycomb Type Elements
,”
J. Power Sources
0378-7753,
83
, pp.
148
155
.
6.
Zha
,
S.
,
Zhang
,
Y.
, and
Liu
,
M.
, 2005, “
Functionally Graded Cathodes Fabricated By Sol-Gel/Slurry Coating for Honeycomb SOFCs
,”
Solid State Ionics
0167-2738,
176
, pp.
25
31
.
7.
Todd
,
B.
, and
Young
,
J. B.
, 2002, “
Thermodynamic and Transport Properties of Gases for Use in Solid Oxide Fuel Cell Modeling
,”
J. Power Sources
0378-7753,
110
, pp.
186
200
.
8.
Zhu
,
W. H.
,
Payne
,
R. U.
,
Nelms
,
R. M.
, and
Tatarchuk
,
B. T.
, 2008, “
Equivalent Circuit Elements for PSPICE Simulation of PEM Stacks at Pulse Load
,”
J. Power Sources
0378-7753,
178
, pp.
197
206
.