Wet Cells, Dry Cells, Fuel Cells

Topics covered are REDOX - is a transfer of electrons, and this flow is electricity. WET CELL- An electrochemical cell is a device that produces electricity by chemical reaction, or vice versa. DRY CELL there are various types. SECONDARY CELLS can be recharged. FUEL CELL work started in 1830s with coal gas and air. NASA used Hydrogen and Oxygen. Proton Exchange Membrane Fuel Cell used to power cars with hydrogen. Solid Oxide Fuel Cell has ceramic electrolyte and hydrocarbon fuel. Operates at high temperature so co-generation is needed for eficiency.