Podcast
Questions and Answers
What is the main function of a fuel cell?
What is the main function of a fuel cell?
- Storing electrical energy
- Generating electrical energy from fuel via an electrochemical reaction (correct)
- Converting water into hydrogen and oxygen ions
- Converting electricity into heat and water
How is the process in a fuel cell different from water electrolysis?
How is the process in a fuel cell different from water electrolysis?
- Fuel cells conduct electrons freed from the hydrogen molecules
- Fuel cells use hydrogen and oxidizer to generate electricity (correct)
- Fuel cells continuously produce electricity if fuels are supplied
- Fuel cells break down water into hydrogen and oxygen ions
What is the key difference between batteries and fuel cells?
What is the key difference between batteries and fuel cells?
- Batteries contain hydrogen and oxidizer
- Batteries continuously produce electricity if fuels are supplied
- Fuel cells store energy
- Fuel cells generate electricity continuously if fuels are supplied (correct)
When was the first commercial usage of fuel cells?
When was the first commercial usage of fuel cells?
Which component of a fuel cell serves as the negative post?
Which component of a fuel cell serves as the negative post?
What does the anode of a fuel cell do?
What does the anode of a fuel cell do?
What is the purpose of the catalyst in a fuel cell?
What is the purpose of the catalyst in a fuel cell?
Why is carbon fiber paper commonly used for making the anode and cathode of a fuel cell?
Why is carbon fiber paper commonly used for making the anode and cathode of a fuel cell?
What is the function of the electrolyte in a fuel cell?
What is the function of the electrolyte in a fuel cell?
Why is platinum powder thinly coated onto carbon paper or cloth to make the catalyst in a fuel cell?
Why is platinum powder thinly coated onto carbon paper or cloth to make the catalyst in a fuel cell?
What is a common reason for the adoption of fuel cells instead of fossil fuels?
What is a common reason for the adoption of fuel cells instead of fossil fuels?
How do fuel cells work in comparison to batteries?
How do fuel cells work in comparison to batteries?
What is a characteristic of carbon fiber paper used in fuel cells?
What is a characteristic of carbon fiber paper used in fuel cells?
Why does the electrolyte in a fuel cell need to be permeable for protons and impermeable to electrons?
Why does the electrolyte in a fuel cell need to be permeable for protons and impermeable to electrons?
What happens if there is no catalyst in a fuel cell?
What happens if there is no catalyst in a fuel cell?
What is a key factor considered by fuel cell designers in minimizing costs?
What is a key factor considered by fuel cell designers in minimizing costs?
