Untitled

SO FC

SOFC single cells
In order to bring you the best solution in SOFC single cell market, we have set high standards, which our products must meet.
As a proof of our work, we have received ISO certificates according to quality control (IS0 9001:2008) and environmental
management standard (ISO 14001:2004).
Properties of cell generations
In the following table main properties of our three cell generations are brought. Please note that ASC-12A line will be available
starting from autumn 2013.
ASC-10B
Property ASC-10B ASC-10C ASC-12A
Anode support composition NiO/YSZ NiO/YSZ NiO/YSZ
Anode support thickness 500 μm 200 μm 200 μm
Anode functional composition NiO/YSZ NiO/YSZ NiO/YSZ
Anode functional thickness 12 μm 12 μm 7-10 μm
Electrolyte composition YSZ YSZ YSZ
Electrolyte thickness 3 μm 3 μm 1-3 μm
Barrrier composition GDC GDC GDC
Barrier thickness 2 μm 2 μm 0.2 μm
Cathode composition LSC LSC LSC
Cathode thickness 20-30 μm 20-30 μm 20-30 μm
Total thickness 550 μm 250 μm 250 μm
Thickness tolerance +/- 25 μm +/- 15 μm +/- 15 μm
Suggested operating temp. 600-700°C 600-700°C 600-700°C
Standard size (cell) 10x10cm 10x10cm 10x10cm
Standard size (cathode on cell) 9x9cm 9x9cm 9x9cm
Different sizes available + + +
Different shapes available + + +
Half-cells available * + + +
ASC-10C
* For universities and R&D companies we have a range of half-cell available
for you to evaluate your own active layers on a trusted and well-tested halfproduct.
Single cell standard
electrochemical performance
As a part of our quality control system, we execute regular cell tests at VTT
testing facilities in Finland who is well-known, objective and trusted service
provider. In the following typical plots for performance and durability are given.
Synthetic reformate in single cell tests had the composition of 15% CH4, 26%
CO2, 29% H2 and 30% H2O.
ASC-12A
1,2
Elcogen ASC-10B SOFC cell
100x100mm cell, active area 79cm 2
Measured at 650°C
1000
Elcogen ASC-10B SOFC cell
Active area 79cm 2 , I = 23.4A; i = 300 mA/cm 2
Anode feed [mlpm]: H 2
819
Cathode feed [mlpm]: air 1942
-0,08
Elcogen ASC-10B SOFC cell
100x100mm cell, active area 79cm 2
i = 400 mA/cm 2
0,8
950
900
-0,06
Voltage (V)
0,4
Voltage (mV)
850
800
750
700
Z imag (Ohm cm²)
-0,04
-0,02
-0,00
0,0
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0
Dry hydrogen
Current density (A/cm ²)
Synthetic methane reformat
650
0 200 400 600 800 1000 1200 1400 1600
Voltage (mV)
Time (h)
Temperature (°C)
0 0,05
600 C
650 C
700 C
0,10 0,15 0,20 0,25 0,30 0,35 0,40
Z real (Ohm cm²)
Reformate

SOFC stack
Elcogen is manufacturing solid oxide fuel cell stacks and has started first deliveries to customers. Current version of the
stack available for deliveries is rated for 500 W. It is based on 30 Elcogen ASC-10B cells, metallic interconnects and glass
based sealants. Stack has excellent electrical performance between 600 – 700 °C with ASR measured to be 0.5 Ohm/cm 2
(at 650°C, Uf = 46 %). Reduced operating temperature enables the use of low cost materials with good long term stability.
Reduced operating temperature also enables major cost reduction in BoP components such as for air recuperator and heat
insulation. Elcogen is introducing stack for 1 kW systems during 2013. Stack will be based on similar material system as
the current 500 W stack.
Elcogen stack power curve.
* Test conditions: U f
= 46%,
V N
anode = 0.28 Nl/min/cell, Uo = 22%,
T ²
cathode,in
= 600°C, T anode,in
= 660°C.
500
400
Stack power(W)
300
200
100
0 5 10 15 20
Stack current [A]
Longterm stability test of Elcogen stack.
* Test conditions: i = 0.3A/cm 2 , [H 2
in N 2
] = 50%,
U f
= 60%, U o
= 26%, T = 700°C
Elcogen 500W stack iV-characteristics
* Test conditions: U f
= 46%,
V N²
anode = 0.28 Nl/min/cell, U o
= 22%,
1,50
1
Average voltage(V)
1,00
0,50
0 100
Full thermocycle
200 300 400 500 600 700 800
Averagestackvoltage[V]
0.8
0.6
0.4
0.2
0.0
0 0.1 0.2 0.3 0.4
Time / h
Current density (A/cm²)

Production facilities
Our small-series production facility has been set up in Tallinn, Estonia. We have paste manufacturing laboratory, all necessary
tape-cast, screen-print, firing and quality control machinery. Our SOFC single cell technology is designed in a way that
it is easily scalable to larger output quantities. Our cells are produced entirely in-house starting from powders.
Company
Elcogen is a manufacturer and developer of high-performance anode-supported Intermediate Temperature Solid Oxide Fuel
Cells based on proprietary materials and technological solutions. Elcogen was established in 2001 and is located in Tallinn,
Estonia and Espoo, Finland. The company works closely with leading Estonian and Finnish research institutions.
Elcogen OY
Visiting address: Biologinkuja 5,
Espoo, Finland
Post address: P.O. Box 1000,
FI-02044 VTT, Finland
Elcogen AS
Saeveski 10a Tallinn
11214 Estonia
Phone: +372 671 2990
Fax: +372 671 2999
E-mail: info@elcogen.com
www.elcogen.com