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12/5/2010FCマイクロ班
M1 門脇 主将
Mass transfer phenomenain the vicinity of MPL
Structure and Characteristics of PEFC
H2O+Unreacted O2
H+
H+
H+O2H2
H2
O2Unreacted H2
e-
Anode Cathode
•Chemical Energy Power Generation High efficiency•Gain Heat and Electricity Suit for Cogeneration system•Low Operation Temperature Short start-up time•High Power Density Reduction size and weight
Detail Structure of PEFC
Endplate MPLSeparator MEA GDL EC
O2
H2
Water Management in a Cell
Flooding: Gas diffusion is inhibited by condensate water, reduced output
High-loadOperation
Condensate WaterGas Diffusion
GC
MEA
GDL
Separator
MPL
Water treatment of PEFC is important
Prevent floodingGas Diffusion
MEA
GDL
MPL:Porous made from Carbon
MPL
High-loadOperation
Experimental Date
0
0.2
0.4
0.6
0.8
1
1.2
0 500 1000 1500
Voltag
e (
V)
Time (s)
Experimenter Nanba (No.3)Operation at 30℃Cell temperature 30℃Current density 0.5A/cm2
With MPL
Without MPL
Investigate the mass transfer phenomenon in the vicinity of MPL!!Contribute to the structure of the superior cell system
MPL has been focused in the research of PEFC.But mass transfer mechanisms in MPL is not well understood.
Mass transfer phenomenain the vicinity of MPL
Purpose
Background
SEM Observation (Plan)
Plan
• Continue reading paper• Consider concrete experimental plan• Get used to using Cryo-SEM• Assist Itchy