A piece of equipment that converts chemical energy into electricity and hot water through an electrochemical process rather than through combusting the fuel source.

voltaic cell in which a fuel substance undergoes oxidation to produce electrical energy.

Any of several galvanic energy conversion devices that convert the chemical energy of a fuel directly into electrical energy in the presence of an oxidant. Examples of fuel cells include solid oxide (SOFC), solid polymer (SPFC) and molten carbonate (MCFC) technologies.

Fuel cells, which generate power by reacting hydrogen with oxygen, are expected to be a next-generation, clean energy source for detached houses and automobiles. Hydrogen is used as the fuel in the cells. Because they discharge only water (and a very small amount of other substances), the cells drastically cut carbon dioxide emissions compared with gasoline-powered vehicles. Automakers are fiercely battling to develop viable fuel cells, which are expected to come into a full-scale use around 2010. Researchers face many challenges, however, before the cells are put into wide commercial use, such as extending the distance covered by autos with each fuel top up, reducing production costs, preventing discharged water from freezing and ensuring the safety of hydrogen used. Commercialization will also crucially involve boosting the number of hydrogen-supplying stations and other steps to improve the existing infrastructure.

First used by NASA in the 1960's for power generation in space capsules. Cells are now being used to generate power in hospitals. Fuel cells rely on the chemical interaction of natural gas and certain other metals, such as platinum, gold, and other electrolytes to produce electricity. The only by-product of a fuel cell's operation is water, which is pure enough to drink.

A technology used for electricity generation composed of electrode devices that convert the energy of a chemical reaction directly into electrical energy, heat, and water; it is somewhat like a battery that requires no recharging

System in which hydrogen is chemically reacted with oxygen to produce electricity.

A fuel cell is a galvanic cell that receives a constant supply of reactants. It is based on a combustion reaction. The two principal types currently under development are the hydrogen fuel cell and the methanol fuel cell. See also: Galvanic cell Battery

Static device that converts the chemical energy in natural gas into electricity and hot water through an electrochemical process.

An electrochemical device that converts the energy of a chemical reaction into electricity.

A device that converts energy from chemical reactions directly into electrical energy. For more information see our Nova: Science in the news topic Fuelling the 21st century.

Technology that replaces the petrol or diesel engine in a vehicle with a hydrogen fuel cell.

Fuel cells convert fuel directly into electricity. The most common type is a PEM, which converts gaseous hydrogen (H2) into electricity and water (H2O).

In this device, electrons are removed from hydrogen atoms to form an electric current; the hydrogen ions combine with oxygen to form water.

A fuel cell uses hydrogen and oxygen to create electricity, heat, and water

cell that produces electricity by oxidation of fuel (hydrogen and oxygen or zinc and air); for use in electric cars

a battery with one fuel tank connected to it

a catalytic device that uses hydrogen and oxygen to produce a direct electric current by means of an electro-chemical reaction

a complicated device requiring a lot of plumbing and the fuel stack itself (the heart of the system) is still extremely expensive

a cross between an internal combustion engine and a battery

a device in which energy obtained from a chemical reaction is directly converted into electrical energy

a device similar in principle to a battery

a device that combines fuel with oxygen to produce electricity

a device that converts a fuel such as

a device that converts chemical energy directly into electric ( DC ) energy

a device that converts chemical energy directly into electricity and heat

a device that converts chemical energy from hydrogen and oxygen into electrical energy and produces an electrical current

a device that converts chemical energy from hydrogen and oxygen into electricity, heat, and power

a device that converts chemical energy of fuels directly to electrical energy and heat

a device that generates electricity by a chemical reaction

a device that generates electricity by combining hydrogen and oxygen from the air in an electrochemical reaction

a device that generates electricity by converting chemical energy in the fuel and is theoretically capable of achieving a power density significantly higher than batteries or any heat engines

a device that generates electricity by converting hydrogen and oxygen into water

a device that generates energy using electrochemical reactions instead of fuel combustion

a device to convert chemical energy into electricity, with high efficiency and low nitrogen oxide emissions

a device which converts hydrogen gas and oxygen into water via a process which generates electricity

a device which directly converts chemical energy into electrical energy and heat

a different approach to turn gas into electricity

a fairly efficient way to transform the hydrogen back into electricity to power an engine

a generator that chemically produces electricity from hydrogen and oxygen

a highly efficient electrochemical power generator that operates quietly and without significant pollution

a kind of battery that uses a combustible fuel and oxidizer as reactants to generate electricity

a like a mini generating station for the home or small business, which uses a chemical reaction to generate enough electricity for the average home

an electricity generating system converting chemical reaction energy into electric energy through a reaction between an oxidant such as oxygen and hydrogen contained in a hydrocarbon material such as methanol, ethanol, or natural gas

an electricity-producing device, similar to a battery but operating on externally supplied fuel rather than on its own components

an electric power generation system for producing electrical energy through a chemical reaction between oxidant and hydrogen or a hydrocarbon-based material such as methanol, ethanol, or natural gas

an electrochemical cell in which converts the energy of a chemical reaction into electricity by promoting a chemical reaction between two gases

an electrochemical cell (much like a battery) in which fuels are consumed as energy is released

an electrochemical cell, which can continuously change the chemical energy of a fuel and oxidant to electrical energy by a process involving an essentially invariant electrode-electrolyte system"

an electrochemical device in which energy stored in the chemical bonds of a conventional fuel is converted through the external circuit into low voltage, direct current (dc) electrical

an electrochemical device in which the chemical energy of a conventional fuel is converted directly and efficiently into low voltage electrical energy

an electrochemical device, much like a battery, that produces electricity

an electrochemical device often compared to a battery, but without the downside of a short life

an electrochemical device similar to a battery, however it generates electricity by a catalytic chemical reaction rather than merely storing it

an electrochemical device that can convert hydrogen into direct current electricity, with water as a byproduct

an electrochemical device that combines hydrogen and oxygen (from air) to produce electricity, heat, and water

an electrochemical device that combines hydrogen fuel and oxygen from the air

an electro-chemical device that contains a membrane that allows hydrogen ions (protons) to pass unimpeded to combine with oxygen to form water

an electrochemical device that continuously converts chemical energy directly into electrical energy for as long as fuel, such as hydrogen, and oxidant, such as oxygen, are supplied to it

an electrochemical device that converts chemical energy directly to electricity

an electrochemical device that converts chemical energy from hydrogen (or other fuel) and an oxidant into electricity

an electrochemical device that converts chemical energy produced by a reaction directly into electrical energy

an electrochemical device that converts free energy of a chemical reaction into electrical energy and heat

an electrochemical device that converts hydrogen directly into electricity and heat without combustion

an electrochemical device that converts propane or natural gas directly into electricity

an electrochemical device that converts the chemical energy in fuels (such as hydrogen, methane, butane or even gasoline and diesel) into electrical energy by exploiting the natural tendency of oxygen and hydrogen to react

an electrochemical device that directly converts the chemical

an electrochemical device that generates electricity by combining stored hydrogen with oxygen from the air

an electrochemical device that generates electricity from chemical reactions

an electrochemical device that operates much like a battery

an electrochemical device that produces electricity by separating the fuel (generally hydrogen gas) via a catalyst

an electro-chemical device that produces electricity directly from hydrogen or a hydrocarbon fuel and an oxidant

an electrochemical device that produces electricity efficiently, silently and without combustion

an electro-chemical device that produces electricity from the chemical interaction of hydrogen and oxygen

an electrochemical device that produces electricity from the reaction of hydrogen and oxygen

an electrochemical device that produces electric power from either hydrogen or alternative fuels such as methanol, propane, butane or natural gas

an electrochemical device used to create electricity

an electrochemical device which combines hydrogen fuel with oxygen to produce electric power, heat and water

an electrochemical device which converts the chemical energy of an ongoing reaction directly into electrical energy

an electrochemical device which reacts hydrogen and oxygen, in the absence of a flame, to produce heat and electricity

an electrochemical device, which utilizes hydrogen and oxygen in

an electrochemical energy conversation device

an electrochemical energy conversion device

an electro-chemical energy conversion device that produces electricity

an electro-chemical energy converter

an electrochemical energy converter, producing electricity, water vapor and heat from fuel (hydrogen) and airborne oxygen

an electrochemical energy device that generates electricity for powering motors, lights, buildings, etc

an "electrochemical engine" that produces electricity without

an electrolytic cell operated in reverse, to take in hydrogen, oxygen and give out water and electricity

an energy conversion device and alternative to batteries that converts energy from a chemical reaction into electricity and heat

an energy- producing device while a battery is an energy- storing device

an energy source that generates electricity from an electromechanical process

a new power generation system that produces electricity from hydrogen and oxygen

a refillable battery that uses hydrogen and air to generate electricity

a revolutionary type of engine that uses chemical reactions rather than combustion to produce energy

a self-contained unit that converts natural gas to electricity and heat through a chemical reaction (as opposed to a combustion process)

a site for an electro-chemical reaction combining hydrogen and oxygen

a specialized form of battery that combines hydrogen with oxygen in a chemical reaction that produces electricity and water vapor

a static device for generating

a system that directly converts a gaseous chemical reaction into electricity

a type of battery that converts hydrogen into electrical energy with few emissions and no moving parts

Electrochemical device that combines hydrogen and oxygen to create electricity, heat and hot water for different residential, commercial and industrial applications.

A device similar to a battery in which fuels such as hydrogen gas or methane can be combined directly with oxygen to produce electricity and very little heat. (See battery and cell.)

A device that generates direct current to electricity by means of an electrochemical process.

A device that changes the chemical energy of fuels directly into electricity.

A device in which a fuel, such as hydrogen gas, is combined with oxygen to produce electricity, water and heat.

A device which produces electricity with high efficiency (little heat) by using a fuel and a chemical which reacts with it (an oxidizer) at two separate electrical terminals. An electric current is thereby produced.

A catalyst that creates electricity by combining hydrogen and oxygen into water.

A device producing electricity at high efficiency using a fuel and a chemical (usually an oxidizer) that reacts with it at two separate terminals, producing electricity.

Power source in which electrical energy is generated by the chemical reaction of a liquid or gaseous fuel.

A device in which chemical energy released by the oxidation of a liquid (such as methanol) or gaseous fuel is converted directly into electrical energy

A device in which the energy of a chemical reaction is converted directly into electricity and heat, without any combustion.

Power system prototype. The fuel cell generates electric power by combining oxygen and hydrogen. Its only waste product is water steam.

An electrochemical cell which captures the electrical energy of a chemical reaction between fuels such as liquid hydrogen and liquid oxygen and converts it directly and continuously into the energy of a direct electrical current.

an electrochemical device in which hydrogen is combined with oxygen to produce electricity with heat and water-vapor as by-products. Natural gas is often used as the source of hydrogen, with air as the source of oxygen. Since electricity is produced by chemical reaction and not by combustion, fuel cells are considered to be green power producers. Fuel-cell technology is quite old, dating back to the early days of the space program. Commercial use of fuel cells has been sporadic, although they are expected to be widely used in atuomobiles and buildings over the next decade.

An electrochemical energy converter, in which hydrogen reacts with oxygen under controlled conditions (reversal of electrolysis) to produce water. The fuel cell generates electrical power and heat. For vehicle applications, the PEM fuel cell is particularly suitable because of its high power density and high efficiency. It has a plastic membrane as the electrolyte (PEM = Polymer Electrolyte Membrane), which is conductive for protons. Its working temperature is 80 °C.

A device that converts energy from chemical reactions directly into electrical energy. The simplest fuel cell 'burns' hydrogen in a flameless chemical reaction to produce electricity. In order to 'burn' the hydrogen a fuel cell needs a source of oxygen and this is usually obtained from air. The only by-product from this type of fuel cell is water. For more information about fuel cells see our Nova topic Fuelling the 21st century.

A device used to convert energy into electrical power that is cleaner than most power sources.

A cell in which chemical reaction is used directly to produce electricity.

A device that produces electricity through an electrochemical process, usually from hydrogen and oxygen.

a device that generates electrical power by electrochemically combining hydrogen and oxygen gases to produce water and heat; the energy released is tapped by electrodes as electric current; this technology is considered "green" i.e. environment friendly

Unit in which hydrogen and oxygen react to water without a flame (cold combustion) to deliver a high yield of electrical energy. Fuel cells transform chemical energy into electric current.

A cell similar to a battery; it uses an electrochemical reverse electrolysis process to directly convert the chemical energy of a fuel (gas, propane) into electricity, heat, and water.

a device that converts fuel energy to electrical energy by means of an electrochemical process. Fuel cells chemically combine the molecules of a fuel (most commonly hydrogen) and an oxidiser (eg air) to create heat without burning, thereby reducing the thermal inefficiencies and pollution that characterise traditional means of combustion.

a device that produces electric power by oxidizing hydrogen and exhausting only water and heat as byproducts.

An advanced energy conversion device that converts fuels to power very efficiently and with minimal environmental impact.

A device that converts the energy of a fuel directly to electricity and heat, without combustion. Because there is no combustion, fuel cells give off few emissions; because there are no moving parts, fuel cells are quiet.

A nonpolluting source of energy that can establish current through a load by simply applying the correct levels of hydrogen and oxygen.

A battery where reactants are supplied to the cell from an external source. The most commonly cited example is the hydrogen fuel cell, in which hydrogen and oxygen are combined, producing electric current and water.

A device for generating electricity by the chemical combination a fuel and oxygen.

An electrochemical engine (no moving parts) that converts the chemical energy of a fuel, such as hydrogen, and an oxidant, such as oxygen, directly to electricity. The principal components of a fuel cell are catalytically activated electrodes for the fuel (anode) and the oxidant (cathode) and an electrolyte to conduct ions between the two electrodes. The byproducts of fuel cells are pure water and useful heat. View a diagram of a fuel cell. Learn how a fuel cell works. Additional information about Fuel Cells.

An electrochemical cell in which the energy of a reaction between a fuel, such as hydrogen, and an oxidant, such as oxygen, is converted directly and continuously into electrical energy.

An electrochemical device similar to a battery, but is designed for continuous replenishment of the reactants consumed. It produces electricity from an external fuel supply as opposed to the limited internal energy storage capacity of a battery.

A device that produces electrical energy directly from the controlled electrochemical oxidation of the fuel. It does not contain an intermediate heat cycle, as do most other electrical generation techniques.

An electrical cell that converts the intrinsic chemical free energy of a fuel into direct-current electrical energy in a continuous catalytic process. Fuel cells extract the chemical energy bound in fuel and, in combination with air as an oxidant, transform it into electricity. Researchers are hoping to develop fuel cells that could take the place of combustion engines, thereby reducing the world dependence on fossil fuels.

A device that converts chemical energy (from a source like hydrogen) into electricity and water. This conversion takes place through an electrochemical process rather than through burning the fuel source.

An alternate energy source that could someday power our future cars. It currently refers to a power plant that creates electrical current from hydrogen and oxygen that is passed over a catalyst, usually a microscopically thin sheet of platinum. The electrical current is then fed directly to an electric motor for propulsion.

A fuel cell is an electrochemical device, which converts chemical energy to electrical energy without combustion. Unlike a battery, a fuel cell will continuously produce electricity as long as fuel is supplied to it.

An electrochemical device which, without combustion, converts the chemical energy of a fuel, usually hydrogen or a hydrogen-containing mixture, and oxygen, usually from the air, directly into electricity.

A device that converts the chemical energy obtained from a redox reaction directly into electrical energy.

A fuel cell is a device that converts the energy of fuel into direct current (DC) electrical energy without the need for combustion. A conventional power plant produces electricity by burning a fossil fuel that turns a generator. Fuel cells bypass the combustion and generating processes by simply converting hydrogen to electricity, in a similar way as a battery. Fuel cells not only offer an efficient means of generating electricity from fossil fuels, but also have very low emissions. Up to 80 percent of the energy obtained from fuel can be converted to usable electric power and heat compared with about 35 percent from a central power plant.

A device that electrochemically converts the chemical energy of a fuel and an oxidant to electrical energy. The fuel and oxidant are typically stored outside of the fuel cell and transferred into the fuel cell as the reactants are consumed. search

Fuel cells produce an electrical current. Fuel cell systems use hydrogen, either stored on board the vehicle or extracted from a fuel such as gasoline, methanol or natural gas. The hydrogen is combined with oxygen in a chemical reaction to generate electricity.

A device that converts chemical energy directly into electricity through the electrochemical reaction of a fuel (for example, hydrogen) with oxygen.

A fuel cell is an electrochemical device in which hydrogen and oxygen combine in an controlled manner (in contrast to combustion or explosion) to directly produce an electric current and heat. Reverse process of electrolyzer.

Used in electrical generation. This is an apparatus used for combining fuel and oxides to generate electricity. It is the conversion of chemicals to electrical energy.

A technology that produces electricity through a chemical reaction similar to that found in a battery.

A device that generates electricity and heat through an electrochemical process.

Any of the various devices that convert chemical energy directly into electrical energy.

An electrochemical device that converts chemical energy directly into electricity.

A cell in which one or both of the reactants are not permanently contained in the cell, but are continuously supplied from a source external to the cell and the reaction products continuously removed. Unlike the metal anodes typically used in batteries, the fuels in a fuel cell are usually gas or liquid, with oxygen as the oxidant. The hydrogen/oxygen fuel cell is the most common. In this fuel cell, hydrogen is oxidized at the anode

A device capable of generating an electrical current by converting the chemical energy of a fuel (e.g., hydrogen) directly into electrical energy. Fuel cells differ from conventional electrical cells in that the active materials such as fuel and oxygen are not contained within the cell but are supplied from outside. It does not contain an intermediate heat cycle, as do most other electrical generation techniques.

A holding tank for a race car's supply of gasoline. Consists of a metal box that contains a flexible, tear-resistant bladder and foam baffling. A product of aerospace technology, it's designed to eliminate or minimize fuel spillage.

The racecarâ€(tm)s gas tank, which is mounted under the deck lid, consisting of a metal box containing a foam baffled tear resistant rubber bladder that holds 22.5 gallons of 110 octane racing fuel. The usually unbreakable fuel cell was developed to help prevent fires in racecar crashes.

It is located in the trunk of the race car and is a 22-gallon holding cell for the race car's gasoline. It is complied of a metal box and inside has a Teflon bladder with foam. The foam is a safety feature to eliminate or minimize fuel spillage. (At superspeedways, NASCAR mandates cars run a 13.5-gallon fuel cell.)

A holding tank for a racecar's supply of gasoline, methanol or other fuel. Consists of a flexible, tear-resistant heavy rubber bladder and foam baffling contained within a rigid structure or box. A product of aerospace technology, it's designed to eliminate or minimize fuel spillage, especially in the event of a crash.