Hydrogen & Fuel Cells

The video explores the potential of using hydrogen, oxygen, and sunlight to power future vehicles. It explains how photosynthesis inspires the process of splitting water into hydrogen and oxygen, with hydrogen stored as fuel. Fuel cells efficiently convert chemical energy to electricity, but challenges include sourcing and storing hydrogen. Current methods derive hydrogen from methane, contributing to greenhouse gases. Research focuses on hydrides for safer storage. Despite these efforts, battery-powered vehicles may be more energy-efficient. The video concludes that while fuel cells are promising, batteries might dominate future vehicle power.

What natural process is mimicked to produce hydrogen fuel for future vehicles?

• Combustion

• Photosynthesis

• Fermentation

• Respiration

In a fuel cell, what is the role of hydrogen?

• It acts as a catalyst.

• It releases electrons at the anode.

• It absorbs electrons at the cathode.

• It forms a solid compound.

What is a major advantage of using fuel cells over internal combustion engines?

• Easier maintenance

• Greater availability of raw materials

• Lower cost of production

• Higher efficiency in converting chemical energy to electricity

What is a significant challenge in using hydrogen fuel cells for vehicles?

• Storing and transporting hydrogen safely

• Converting hydrogen directly into electricity

• Producing hydrogen from fossil fuels

• Finding a renewable source of oxygen

What alternative to hydrogen fuel cells is mentioned as potentially more energy-efficient for vehicles?

• Solar panels

• Wind turbines

• Batteries

• Biofuels