1. Delivering the future…...
August 23, 2007
NCEMC Technology Conference
“Propelled by Microcell”

2. How does a fuel cell work?
If pure hydrogen is used as a fuel, fuel cells emit only heat and water, eliminating concerns about air pollutants or greenhouse gases.
PROPRIETARY AND CONFIDENTIAL

3. How does a fuel cell work?
PEM Fuel Cell One of the more common types of fuel cell is the Polymer Electrolyte Membrane (PEM) fuel cell. The PEM fuel cell consists of an electrolyte membrane sandwiched between an anode (negative electrode) and a cathode (positive electrode).
PROPRIETARY AND CONFIDENTIAL

4. How does a fuel cell work?
H2 and anode: Hydrogen fuel (H2) is channeled to the anode, where the catalyst separates the hydrogen's negatively charged electrons from the positively charged protons.
PROPRIETARY AND CONFIDENTIAL

5. How does a fuel cell work?
PEM: The membrane allows the positively charged protons to pass through to the cathode, but not the negatively charged electrons.
The negatively charged electrons must flow around the membrane through an external circuit. This flow of electrons forms an electrical current.
PROPRIETARY AND CONFIDENTIAL

6. How does a fuel cell work?
Cathode: At the cathode, the negatively charged electrons and positively charged hydrogen ions (protons) combine with oxygen to form water (H20) and heat.
PROPRIETARY AND CONFIDENTIAL

7. How does a fuel cell work?
Cathode: At the cathode, the negatively charged electrons and positively charged hydrogen ions (protons) combine with oxygen to form water (H20) and heat.
PROPRIETARY AND CONFIDENTIAL

8. How does a fuel cell work?
Fuel cell stack: To increase the amount of electricity generated, individual fuel cells are combined in series, into a fuel cell "stack." A typical fuel cell stack may consist of hundreds of fuel cells.
PROPRIETARY AND CONFIDENTIAL

9. PROPRIETARY AND CONFIDENTIAL
Current “Plate & Frame” Technology Fuel Cell Stack
PROPRIETARY AND CONFIDENTIAL

10. How is Microcell’s fuel cell different?
PROPRIETARY AND CONFIDENTIAL

11. PROPRIETARY AND CONFIDENTIAL
Technology - Individual Microcell
Membrane Electrolyte
Current Collectors
Catalyst
Layers
Lumen
Outside Diameter
~ 1000 Microns
PROPRIETARY AND CONFIDENTIAL

12. PROPRIETARY AND CONFIDENTIAL
Technology – Unicell
PROPRIETARY AND CONFIDENTIAL

13. PROPRIETARY AND CONFIDENTIAL
Technology – Microcell Assembly
Microcell
Unicell
Module
Building block for larger systems (25 or 50kW)
Currently 1-2kW module is 4’’ in diameter and contains 120 Unicells
Separate chambers to feed fuel, air and coolant
End caps contain “quick connect” electrical connections
Replaceable Unicell (10-15W)
Fuel, air and thermal management incorporated
Inserted into module and sealed
About the size of a pencil
1-1.5 Watts per cell
Mass produced on high speed extrusion line
PROPRIETARY AND CONFIDENTIAL

14. Ease of Repair, Serviceability High Thermal Efficiency
Significant Competitive Advantages
Lower
Production
Cost
Continuous automated extrusion process
Derived from raw materials compared to purchasing components
Elimination of expensive bipolar flow field plates
Reduced auxiliary and control equipment requirements; no humidification equipment
Simplified design and fabrication processes = lower labor costs
High Power
Density
Simplified design and no humidification system = compact and lightweight
Cylindrical shape provides the ideal fibrous geometry, resulting in the highest possible surface area / volume ratio
Power density results exceed 1kW/L
Ease of Repair, Serviceability
Individual Microcell cores are inserted into a fuel cell module
Individual cores can be replaced without replacing the entire module
High Thermal Efficiency
Heat removal occurs from every inch of every single cell
Design allows for optimal heat removal to reduce cell degradation
Quick Start
Operation
Metallic current collectors heat up much faster than graphite plates
Reach operating temperature quickly; essential for operating effectively in cold weather conditions
PROPRIETARY AND CONFIDENTIAL

15. PROPRIETARY AND CONFIDENTIAL
Key Strategic Relationships
Existing Partners
Major International Automaker
Multi-phase joint-development project
Automotive and DG applications
Major Energy Holding Companies
PEPCO Holdings
Progress Energy
Duke Energy
North Carolina Electric Cooperatives (NCEMC)
Dominion Energy
Advanced Energy
PROPRIETARY AND CONFIDENTIAL

16. PROPRIETARY AND CONFIDENTIAL
Potential Markets
PROPRIETARY AND CONFIDENTIAL

17. PROPRIETARY AND CONFIDENTIAL
Current Product Focus
1-5 kW Back up Power units operating on Hydrogen
1-5 kW units with on site Hydrogen generation aimed at DSM market
PROPRIETARY AND CONFIDENTIAL

18. PROPRIETARY AND CONFIDENTIAL
Product Commercialization Status
DG / APU
PROPRIETARY AND CONFIDENTIAL