Project #4: Renewable Energy System P.I.: Vesselin Shanov G.A.: Feng Wang Teacher - Deon Edwards...
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Transcript of Project #4: Renewable Energy System P.I.: Vesselin Shanov G.A.: Feng Wang Teacher - Deon Edwards...
Project #4: Renewable Energy SystemP.I.: Vesselin ShanovG.A.: Feng WangTeacher - Deon EdwardsTeacher - Stephanie Baldwin
Fossil Fuels• 85% of American energy• Growing Demand• Finite supply • Negative Environmental Effects
Solar EnergyDoes not polluteUnending supplyDoes not emit greenhouse gasTwo-types
Silicon Solar CellNanocrystalline TiO2
Silicon Solar Cell
Nanocrystalline TiO2
Silicon Solar Cells
•Wide spread•Expensive to produce
Dye-Sensitized TiO2 Solar Cell
• Based on photosynthesis
• Newer, less proven• Inexpensive to produce
TiO2 Coating with Spinach Dye
Electrolyte(Iodine)
Carbon Layer(use for catalyst)
Counter Electrode Glass plate
Electrode Glass plate
e
How Dye Sensitized Solar Cells work
DyesSyntheticExpensiveNot widely available
OrganicCheaperMore widely available
RaspberryBlackberriesGreen Leaves
Dye Solar Cell ProcedureStep 1: Prepare
conductive plates with tape and apply the TiO2 film
Step 2: Bake plates
Procedure-continuedStep 3: Dye the plates Step 4: Assemble Cell
Testing and DataTesting completed using a solar simulator and automated multimeter
Data CollectedCurrent Voltage
CalculationsCurrent Density
CD = Current x Area
Power DensityPD = Current Density x
Voltage
-1500 -1000 -500 0 500 1000 1500
-20.0
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
Current Density vs VoltageSynthetic Spinach Black Berry
Voltage in Millivolts
Curr
ent
in M
illi
am
ps
Results
Results
-400 -300 -200 -100 0 100 200 300
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
Current Density vs VoltageSynthetic Spinach Black Berry
Voltage in Millivolts
Curr
ent
in M
illi
am
ps
ResultsDye Type Short
Circuit Current
Open Circuit Voltage
Synthetic .55 mA/cm2 215 mVBlackberry .27 mA/cm2 45 mVSpinach .30 mA/cm2 305 mV
Dye Type Short Circuit Current
Open Circuit Voltage
Synthetic .55 mA/cm2 215 mVBlackberry .27 mA/cm2 45 mVSpinach .30 mA/cm2 305 mV
Our conclusion
Questions?
ACKNOWLEDGEMENTSSincere thanks to . . . National Science Foundation. Anant R. Kukreti, Associate Dean for
Engineering Education Research and Professor, Department of Civil and Environmental Engineering, for leading the project.
Dr. Vesslin Shanov Feng Wang Andrea Burrows, for her logistical
support.