1. 1 FUEL CELLS IN ORT BRAUDE July 05 – July 06 Lea MorEugenia Bubis Nissim SabagZeev Rubin Rona SarfatyEhud Kroll Pinchas Schechner Vladimir Chechik

2. 2 Fuel Cell Components and Principle of Operation Fuel Compartment 1 Porous Conductive Fuel Catalyst e- 3 exhaust O -2 Fu +n O -2 5 Electrolyte Porous Conductive Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 e- Load e- Ambient Oxygen 2

3. 3 Why Glucose ? Glucose is the first stable product in photo-synthesis Glucose is the building block in all the Saccharides: Fructose, Maltose, Lactose, Starch, Cellulose. 50% of the weight of the Flora Organic Municipal Solid Waste (MSW) Paper Wood chips Cellulose agricultural wastes Relatively easy to extract from

4. 4 6324 - 160.037511.06Methane 5714 - 770.0111191.23Hydrogen 2201 - 666.10481.10Octane 4706 - 5017.37221.21Methanol 40070.64331.02Carbon --24.57161.23Glucose Auto Igni. [ 0 C] (2) Flamm. [%] (1) (  H° c ) V [kJ/cm 3 ] (  G° c ) m [kJ/g] E o [V] Fuel Motivation (1) Flammability Limits in Air(2) Auto-Ignition in Air * E 0 - Standard Potential (  G° c ) m - Mass Free Energy of Combustion (  H° c ) V - Volume Enthalpy of Combustion

5. 5 FC Activities in Braude: 1 – Experimental Performance of a membraneless AFC exhaust O -2 Fu +n O -2 5 Electrolyte Fuel Compartment 1 Porous Conductive Fuel Catalyst e- 3 Porous Conductive Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 Ambient Oxygen 2

6. 6 Experimental Membraneless AFC. Fuel Cell Research Lab., Dept. of Chemistry, Hong Kong University Air Electrode 4.0 x 4.5 cm 2 Fuel Electrode (Pt/Co/Ni) immersed in the Electrolyte (KOH) + Fuel Solution

7. 7 Mor L., Bubis E., Sabag N., Rubin Z., Schechner P., Measuring Open Circuit Voltage in Glucose Alkaline Fuel Cell Operated in a Continuous Mode, "Journal of Fuel Cell Science and Technology". Under peer review FC Activities in Braude: 1 – Experimental Performance of a membraneless AFC

8. 8 Bubis E., Mor L., Sabag N., Rubin Z., Vaysban U., Hemmes K. and Schechner P., Electrical Characterization of a glucose-fueled Alkaline Fuel Cell, Fourth International ASME Conference on Fuel Cell Science, Engineering and Technology, Irvine, California. June 19-21, 2006 "Journal of Fuel Cell Science and Technology". Accepted for publication FC Activities in Braude: 1 – Experimental Performance of a membraneless AFC

9. 9 FC Activities in Braude: 2 – Experimental FC exhaust O -2 Fu +n O -2 5 Electrolyte Fuel Compartment 1 Fuel Catalyst e- 3 Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 Oxygen 2 Dr. Vladimir Chechik Mr Alexei Konzanski Department of Mechanical Engineering

10. 10 Enable Variations of: Fuel Electrode (Anode) Oxygen Electrode (Cathode) Electrolyte Inter-electrode Distance Electrode size Fuel and its Concentration Temperature up to 95 0 C 1 Dimensions: 5 x 8 x 8 cm 3 2 Proof against up to 2 M KOH3 FC Activities in Braude : 2 – Experimental FC Specifications

11. 11 FC Activities in Braude: 3 - Measuring Instrumentation Oxygen 2 O -2 Fu +n O -2 5 Electrolyte Fuel Compartment 1 Fuel Catalyst e- 3 Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 e- Load e- Voltmeter Dr. Nissim Sabag Dr. Eugenia Bubis

12. 12 Automatic Change of the External Load 1 Adaptive Sampling2 Small Sampling Period (0.001 s)3 FC Activities in Braude: 3 - Measuring Instrumentation Specifications

13. 13 פרויקט גמר לתואר הנדסאי במגמת ביוטכנולוגיה הכנת אלקטרודה אנזימית לתא דלק גלוקוז exhaust O -2 Fu +n O -2 5 Electrolyte Fuel Compartment 1 Fuel Catalyst e- 3 Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 Oxygen 2 FC Activities in Braude: 4 – Enzymatic Anode הגב' דיה סעד Dr. Lea Mor

14. 14 O -2 Fu +n O -2 5 Electrolyte Fuel Compartment 1 Fuel Catalyst e- 3 Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 Oxygen 2 Dr. Zeev RubinDr. Lea Mor Predict the Conductivity of the Electrolyte/Fuel Solution FC Activities in Braude: 5 – Mathematical Model  ([KOH])  ([Glucose])

15. 15 FC Activities in Braude: 6 - Electro-spinning nanometric fiber anode O -2 Fu +n O -2 5 Electrolyte Fuel Compartment 1 Fuel Catalyst e- 3 Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 Oxygen 2 Prof. Ehud Kroll Department of Mechanical Engineering Prof. Eyal Zusman Dr. Shmuel Tchervinsky Mr. Daniel Hazan

16. 16 Electro-spinning Experimental Set-Up FC Activities in Braude: 6 - Electro-spinning nanometric fiber anode

17. 17 FC Activities in Braude: 6 - Electro-spinning nanometric fiber anode 30  7  OCV [V] Electrode ~PD [mW/cm 2 ] V~PD [mW/cm 2 ] V 0.60.571.10.370.76Hong Kong 0.60.271.10.180.47PCL -SP

18. 18 FC Activities in Braude: 7 - Electrochemical Nano-Biochip Prof. Yosi Shacham Dr. Rona Sarfaty UTA Mr. Itay Shay O -2 Fu +n O -2 5 Electrolyte Fuel Compartment 1 Fuel Catalyst e- 3 Oxygen Catalyst ++++++++++++ 4 Fuel Electrode 6 Oxygen Electrode 6 Oxygen 2 Existing Microchip Electro-Chemical Nanochamber, developd as a sensor, will be adapted to perform as a Glucose Fuel Cell

19. 19 Conclusions: Electrical design parameters of glucose-fueled FC1 Measuring methods and electrical instrumentation2 Enzymatic anode3 Experimental Fuel Cell4 Mathematical Model5 Electro-spinning nanometric fiber anode6 Electrochemical nano-biochip7 7 Parallel Investigation Activities are taking place in the College: 1 Next Year, we hope that we will be able to present the advances in this Activities, in the next Braude Conference or in a dedicated FC Conference 2