Fuel Cells Flashcards
1
Q
What is a fuel cell?
A
A cell which uses a fuel and oxygen (or air) to generate electricity.
2
Q
What are the products in a hydrogen fuel cell?
A
Water
3
Q
State three advantages of hydrogen fuel cells
A
Do not need to be recharged, no pollutants are produced, can be different sizes for different uses
4
Q
State three disadvantages of hydrogen fuel cells
A
Hydrogen is highly flammable, hydrogen is sometimes produced through non-renewable means, hydrogen is difficult to store
5
Q
Complete the equation which occurs at the negative electrode of a hydrogen fuel cell 2H? + 4OH? ?
A
4H?O + 4e?
6
Q
Complete the equation which occurs at the positive electrode of a hydrogen fuel cell O? + 2H?O ?
A
4OH?
