Fuel cells Exam 2 Updated Actual
Questions and CORRECT Answers
Operation Temp of SOFC - CORRECT ANSWER 700-1000 C
An advantage of SOFC - CORRECT ANSWER High efficiency and solid electrolytes
Disadvantage of SOFC - CORRECT ANSWER High temperature
Disadvantage of PEMFC - CORRECT ANSWER expensive catalyst and sensitive to
fuel impurities
In PEMFC the electrodes are operated by - CORRECT ANSWER cation exchange
membrane
The membrane thickness in PEMFC is usually around - CORRECT ANSWER 50
micrometers
In H2/O2 PEMFC the catalyst is usually - CORRECT ANSWER Pt
Which is the fuel used in DMFC - CORRECT ANSWER Methanol aqueous solution
an advantage of the methanol as fuel in DMFC is - CORRECT ANSWER storage and
transportation
in AFC the electro-catalyst can be made from - CORRECT ANSWER Ag and metal
oxides
AFC is intolerant to - CORRECT ANSWER CO2
, In PAFC the ion-conducting electrolyte is - CORRECT ANSWER H3PO4
In PAFC the ionic conductivity is provided by - CORRECT ANSWER H+
The operating temperature of PAFC is around - CORRECT ANSWER 190 C
The operating temperature of MCFC is around - CORRECT ANSWER 650
Disadvantage of MCFC is - CORRECT ANSWER durability
SOFC systems exist in - CORRECT ANSWER two configurations
In SOFC, the efficiency of converting fuel to electricity is around - CORRECT
ANSWER 50-60%
The temperature range which is not covered by any fuel cell technology - CORRECT
ANSWER 250-600 C
In SOFC the ion conducting electrolyte is - CORRECT ANSWER YSZ
In SOFC the ion conductivity is provided by - CORRECT ANSWER O2- ions
How many phases are in intimate contact at the PEMFC cathode at 120 C and 1 bar -
CORRECT ANSWER 3
The main components of a membrane electrode assembly (MEA) in PEMFC are -
CORRECT ANSWER membrane, electrodes, and gas diffusion layers
Questions and CORRECT Answers
Operation Temp of SOFC - CORRECT ANSWER 700-1000 C
An advantage of SOFC - CORRECT ANSWER High efficiency and solid electrolytes
Disadvantage of SOFC - CORRECT ANSWER High temperature
Disadvantage of PEMFC - CORRECT ANSWER expensive catalyst and sensitive to
fuel impurities
In PEMFC the electrodes are operated by - CORRECT ANSWER cation exchange
membrane
The membrane thickness in PEMFC is usually around - CORRECT ANSWER 50
micrometers
In H2/O2 PEMFC the catalyst is usually - CORRECT ANSWER Pt
Which is the fuel used in DMFC - CORRECT ANSWER Methanol aqueous solution
an advantage of the methanol as fuel in DMFC is - CORRECT ANSWER storage and
transportation
in AFC the electro-catalyst can be made from - CORRECT ANSWER Ag and metal
oxides
AFC is intolerant to - CORRECT ANSWER CO2
, In PAFC the ion-conducting electrolyte is - CORRECT ANSWER H3PO4
In PAFC the ionic conductivity is provided by - CORRECT ANSWER H+
The operating temperature of PAFC is around - CORRECT ANSWER 190 C
The operating temperature of MCFC is around - CORRECT ANSWER 650
Disadvantage of MCFC is - CORRECT ANSWER durability
SOFC systems exist in - CORRECT ANSWER two configurations
In SOFC, the efficiency of converting fuel to electricity is around - CORRECT
ANSWER 50-60%
The temperature range which is not covered by any fuel cell technology - CORRECT
ANSWER 250-600 C
In SOFC the ion conducting electrolyte is - CORRECT ANSWER YSZ
In SOFC the ion conductivity is provided by - CORRECT ANSWER O2- ions
How many phases are in intimate contact at the PEMFC cathode at 120 C and 1 bar -
CORRECT ANSWER 3
The main components of a membrane electrode assembly (MEA) in PEMFC are -
CORRECT ANSWER membrane, electrodes, and gas diffusion layers
