HHHH PROTON EXCHANGE 2H +4e 2H O … Effects of Impurities on Fuel Cell Performance & Durability...
Transcript of HHHH PROTON EXCHANGE 2H +4e 2H O … Effects of Impurities on Fuel Cell Performance & Durability...
Program: Mechanical Modeling of PEM Stack in Support of Failure Analysis
Sponsor: UTC Power
Accomplishments:Developed accelerated testing and life prediction approach for PEM fuel cells
PI: K Reifsnider, X Huang
Program: Effects of Impurities on Fuel Cell Performance & Durability
Sponsor: DOE
Expected Outcomes:Determine the effects of various contaminants on PEM fuel cell performance and durability for the transportation and stationary arenas
PI: T Molter, Current Participants: X Huang, U Pasaogullari, S Suib, M Aindow
Program: SGER: Carbon Supported Non Noble Metal ElectrocatalystsBased on Macrocyclical Compounds
Sponsor: NSF
Expected Outcomes:1) Develop nano-structured non-noble metal catalysts2) Develop PEM fuel cells based on synthesized catalysts
PI: A Smirnova
Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Ca
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Carbon Support
Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Ca
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Carbon Support
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Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Ca
rbon
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Carbon Support
Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Cl1 Cl2Ca
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Carbon Support
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Program: Alternative Carbon NanotubeSupported Platinum Catalysts
Sponsor: Mystic MD
Accomplishments:1) Good catalyst performance at lowPt loading2) High limiting current3) Superior stability under air-air start (severe carbon corrosion) conditions4) Improved controls for electrode morphology & support surface chemistry
PI: X Huang
Various Testing Programs: Sponsors:1) Fabrication & Testing of PEM FC with Alternative Low Pt Loading Cathode FuelCell Energy
2) Testing of Catalysts for PEMFC Applications Using Rotating Disk Electrodes UTC Power
3) Testing Porous All Metal Flow Field Mott Corp.
4) Fuel Cell Advanced Product Water Removal and Management Infinity Fuel Cell & Hydrogen
5) Development of PEM Testing Device FuelCell Energy
PI’s: (1) Xinyu Huang, (2) Alla Smirnova, (3, 4, 5) Trent Molter
Program: Computational Fluid Dynamics Analysis of Portable PEMFC’s
Sponsor: Design-By-Analysis
Accomplishments:1) Analyzed transport phenomena & electro-chemical kinetics for portable FCs2) Recommendations made to improve H2O mgmt strategies
PI: U Pasaogullari
Program: Specialty Coatings Development for Bipolar Plates
Sponsor: Tanury Industries
Accomplishments:Screened advanced PVD coatings based on corrosion, contact resistance, simulated endurance test results
PI: K Reifsnider, X Huang
PROTON EXCHANGE MEMBRANE FUEL CELLS
Durability & Performance
Prediction
Materials & Nano-Structures Component Characterization, Design & Testing
CNT Polarization
0.000.100.200.300.400.500.600.700.800.901.00
0.00 200.00 400.00 600.00 800.00 1000.00
Current Density (mA/cm2)
Pote
ntia
l (V)
BeforeAfter 20After 40
HH 22 2H2H ++ + 2e+ 2e --HH 22 2H2H ++ + 2e+ 2e --
2H2H ++ + O+ O 22 +4e+4e-- 2H2H 22OO
AnodeAnode CathodeCathode
HH ++
AnodeAnode CathodeCathode
HH ++HH ++
Cathode catalyst structure
anode PEM cathode
4 H+
O2
2 H2
2 H2O
4 e-
CO
NH3
H2S
Trace Metals
Formic Acid
Hydro-carbons
SO2
NO2
Dust
Ocean salt
Chlorides
Proton
Exchange
Membrane
TPB TPB
anode PEM cathode
4 H+
O2
2 H2
2 H2O
4 e-
CO
NH3
H2S
Trace Metals
Formic Acid
Hydro-carbons
SO2
NO2
Dust
Ocean salt
Chlorides
Proton
Exchange
Membrane
TPB TPB
Analysis & Diagnostic Methods