fuel cells
- Created by: riya2702
- Created on: 14-01-23 21:50
View mindmap
- Fuel cells
- simple cells
- source of electrical energy
- consists of two electrodes made from metals of different reactivity immersed in an electrolyte and connected to an external voltmeter by wire, creating a complete circuit
- hydrogen-oxygen fuell cells
- involve a redox reaction
- electrolyte is often a solution of potassium hydroxide
- electrodes are often porous carbon with a catalyst
- hydrogen goes into the anode compartment and oxygen goes into the cathode compartment
- the electrons flow through an internal circuit from the anode to the cathode -this is the electrical current
- at the anode hydrogen looses an electron to produce H+ ions this is oxidation
- H+ ions in the electrolyte move to the cathode
- at the cathode oxygen gains from the cathode and reacts with H+ ions to make water. This is reduction
- Advantages of hydrogen oxygen fuel cells
- dont produce pollutants
- hydrogen and oxygen are abundant
- easu to mantain
- disadvantages of hydrogen oxygen fuel cells
- hydrogen takes up a lot of space to store
- it is flammable when mixed with air
- very expensive to manufacture
- simple cells
Comments
No comments have yet been made