This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What are the disadvantages to the alkaline fuel cell (AFC) that make it more expensive to operate ... (Read 108 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 26, 2018
What are the disadvantages to the alkaline fuel cell (AFC) that make it more expensive to operate than other fuel cells?
 
  What will be an ideal response?

Question 2

Describe the operation of a direct-methanol fuel cell (DMFC).
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

morrie123456

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 26, 2018
Answer to Question 1

The primary disadvantage is the requirement for pure oxygen and pure hydrogen. The fuel cell is also poisoned easily by CO2 and they have a shorter average lifetime than other fuel cell, making them less cost effective.

Answer to Question 2

Methanol and water is supplied to the fuel cell and hydrogen is extracted from the methanol by a steam reformer. Electrons are released from the hydrogen at the anode and travel through the external circuit to the cathode as electrical current. Oxygen is from air is ionized at the cathode and oxygen ions combine with hydrogen ions to form water.


penguins

  • Hero Member
  • *****
  • Posts: 903
Reply #2 on: Jul 26, 2018
TY


morrie123456

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Jul 26, 2018
You're welcome


« previous next »
 

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

A single cell wide-band oxygen sensor has four wires with two for the heater and two for the sensor ... A single cell wide-band oxygen sensor has four wires with two for the heater and two for the sensor ...
Single-cell circulation model Single-cell circulation model
Reproductive Cell Division: Meiosis I Reproductive Cell Division: Meiosis I
Checkpoints and proliferation decision points monitor the progress of the cell through the cell cycl Checkpoints and proliferation decision points monitor the progress of the cell through the cell cycl
A mammalian cell demonstrating the presence of mtDNA A mammalian cell demonstrating the presence of mtDNA
Opener Chromosome territories in a chicken cell nucleus Opener Chromosome territories in a chicken cell nucleus
Video: Inflammation

For a complete list of videos, visit our video library