FUEL CELLS EXAM 2 QUESTIONS
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1 of 69
Term
Modes of Ion transport
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Diffusion
it shows proton conductivity convection
migration
, parallel
pro: high velocity
serpentine
con: high pressure drop
parallel serpentine
interdigitated
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2 of 69
Definition
Operating temp: 30-100 C
advantages: low temp, high efficiency, high power
density Disadvantages: cost, durability, waste heat
Applications: Portable, automotive, stationary
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Phosphoric Acid Fc (pafc) Polymer Electrolyte FC (PEFC)
Molten Carbonate Fc (mcfc) Solid Oxide Fc (sofc)
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3 of 69
Term
Pros and cons of parallel
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Pro: low pressure drop Pros: water removed cons: high
cons: low velocity pressure drop
Both of the pros and cons pro: high velocity
of parallel and serpentine con: high pressure drop
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4 of 69
Definition
this transport mode largely depends on the operation pressure pf
PEMFC
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permeation absorption
diffusion degradation
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, 5 of 69
Definition
mass transport due to concentration gradient
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Permeation Osmosis
Diffusion Convection
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6 of 69
Definition
solid phase in catalyst layer
gas diffusion layer
bipolar plate, current collecting plate, external circuit
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electron transport locations modes of ion transport
Electrolyte used in Polymer
liquid transport electrolyte fuel cell
WITH 100% VERIFIED ANSWERS!!
1 of 69
Term
Modes of Ion transport
Give this one a try later!
Diffusion
it shows proton conductivity convection
migration
, parallel
pro: high velocity
serpentine
con: high pressure drop
parallel serpentine
interdigitated
Don't know?
2 of 69
Definition
Operating temp: 30-100 C
advantages: low temp, high efficiency, high power
density Disadvantages: cost, durability, waste heat
Applications: Portable, automotive, stationary
Give this one a try later!
Phosphoric Acid Fc (pafc) Polymer Electrolyte FC (PEFC)
Molten Carbonate Fc (mcfc) Solid Oxide Fc (sofc)
Don't know?
3 of 69
Term
Pros and cons of parallel
,Give this one a try later!
Pro: low pressure drop Pros: water removed cons: high
cons: low velocity pressure drop
Both of the pros and cons pro: high velocity
of parallel and serpentine con: high pressure drop
Don't know?
4 of 69
Definition
this transport mode largely depends on the operation pressure pf
PEMFC
Give this one a try later!
permeation absorption
diffusion degradation
Don't know?
, 5 of 69
Definition
mass transport due to concentration gradient
Give this one a try later!
Permeation Osmosis
Diffusion Convection
Don't know?
6 of 69
Definition
solid phase in catalyst layer
gas diffusion layer
bipolar plate, current collecting plate, external circuit
Give this one a try later!
electron transport locations modes of ion transport
Electrolyte used in Polymer
liquid transport electrolyte fuel cell
