Hydrogen Fuel Cells By: Kris Williams.

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Presentation transcript:

Hydrogen Fuel Cells By: Kris Williams

Why Hydrogen Fuel Cells Are Needed Fuel is becoming more expensive Natural resources are being depleted Fossil fuels contribute to greenhouse effect

Uses-if successful Large amounts of energy for Fuel for cars-FCVs (fuel cell vehicles) Electric energy-for stoves, washers, dryers etc. Heat in homes

Hydrogen Most plentiful and simplest element in the universe Fuel cells combine hydrogen and oxygen to give off energy and heat Cheap, efficient, renewable

Setbacks Price of manufacturing Ability to Last/Reliability Size of the system Difficult to store

Hydrogen Future Act of 1996 The helped put futher research into action. It said -research should be carried out for the “production, storage, transportation, and use of hydrogen” -so that hydrogen can be used for “industrial, residential, transportation, and utility applications.”

Recent Developments in Technology The H-racer Toy car emulating how a real hydrogen powered vehicle would act Works by converting water to hydrogen by energy from the sun

Recent Technology New Toyota Highlander FCHV -550 miles on just one tank -Traveled at a speed of 50 mph for 350 miles with AC on British ENV (Emissions Neutral Vehicle) bike -designed to drive 4 hours without refueling -uses fuel cell generator and battery

First attempt at hydrogen powered car 1966 The Electrovan Traveled 70mph More Hydrogen Powered Vehicles

Fuel Cell System A membrane electrode assembly (MEA) is placed between two flow-field plates the anode and the cathode plates are each coated on one side with a thin catalyst layer. They are separated by a proton exchange membrane The flow-field plates direct hydrogen to the anode and oxygen (from air) to the cathode. When hydrogen reaches the catalyst layer, it separates into protons (hydrogen ions) and electrons. The free electrons, produced at the anode, are conducted in the form of a usable electric current through the external circuit. At the cathode, oxygen from the air, electrons from the external circuit and protons combine to form water and heat.