Fuel Cell Tech

Question 1

What is a fuel cell?

Answer 1

Device that converts chemical energy into electricity through electrochemical reaction.

Fuel cells are known for being clean and efficient, with heat and water as byproducts.

Question 2

What are the basic steps of fuel cell operation?

Answer 2

1. Fuel enters anode
2. Anode splits protons and electrons
3. Electrons flow through external circuit (generate electricity)
4. Protons move through electrolyte to cathode
5. Protons combine with oxidant to create byproducts.

This sequence illustrates the flow of energy and the conversion process in a fuel cell.

Question 3

What is the anode material in a Proton Exchange Membrane Fuel Cell?

Answer 3

Hydrogen

The anode is where the fuel (hydrogen) is introduced and processed.

Question 4

What is the electrolyte used in Proton Exchange Membrane Fuel Cells?

Answer 4

Polymer membrane

The polymer membrane allows protons to pass while keeping electrons from flowing through it.

Question 5

What is the cathode material in a Proton Exchange Membrane Fuel Cell?

Answer 5

Oxygen

Oxygen is the oxidant that combines with protons at the cathode.

Question 6

What is the operating temperature of a Proton Exchange Membrane Fuel Cell?

Answer 6

75C

This low operating temperature makes it suitable for various applications.

Question 7

What is the efficiency range of Proton Exchange Membrane Fuel Cells?

Answer 7

35 to 60%

Efficiency can vary based on operating conditions and design.

Question 8

What type of vehicles are powered by Proton Exchange Membrane Fuel Cells?

Answer 8

Light duty vehicles

These fuel cells are ideal for applications such as passenger cars.

Question 9

What does FCEV stand for?

Answer 9

Fuel Cell Electric Vehicle

FCEVs are powered by hydrogen fuel and emit water vapor as a byproduct.

Question 10

Fill in the blank: The byproducts of a fuel cell are _______.

Answer 10

heat and water

These byproducts highlight the clean energy nature of fuel cells.

Question 11

True or False: Fuel cells are inefficient and produce harmful emissions.

Answer 11

False

Fuel cells are known for their efficiency and clean operation.

Question 12

consider a hydrogen fuel cell operating at 200C.
Gibbs free energy of -220 kJ.
Calculate cell voltage released by fuel cell.

Answer 12

F = N x e
E = change in G / 2F

ans = 1.14V

Question 13

what is the equation to calculate cell voltage released by a fuel cell

Answer 13

E (cell voltage) = - (change in G / 2F)

Question 14

equation for faradays constant

Answer 14

F = N x e