A fuel cell combines hydrogen and oxygen to produce electricity, heat, and water. Fuel cells are often compared to batteries. Both convert the energy produced by a chemical reaction into usable electric power.

Fuel cells work like batteries, but they do not run down or need recharging. They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte.

A fuel cell is a device that generates electricity through an electrochemical reaction, not combustion. In a fuel cell, hydrogen and oxygen are combined to generate electricity, heat, and water.

Operation of a Hydrogen Fuel Cell Hydrogen and oxygen combine to form water and generate heat. At the anode, hydrogen is stripped of its electron and its proton is made to pass through the electrolyte. The electron is made to pass through an external DC (direct current) circuit to power devices.

A hydrogen fuel cell is an electrochemical cell that uses a spontaneous redox reaction to produce current that can do work. The net reaction is exothermic….Hydrogen Fuel Cell.

On paper, the workings of a hydrogen fuel cell sound straightforward enough: An electrochemical reaction occurs between hydrogen and oxygen that converts chemical energy into electrical energy.

According to the US Department of Energy, one fuel cell produces around 0.5 to one volt of electricity.

The biggest difference between the two is that a battery stores energy, while a fuel cell generates energy by converting available fuel. A fuel cell can have a battery as a system component to store the electricity it’s generating. Essentially, there is a small explosion as the fuel is combusted.

To meet these future needs, portable fuel cells, called micro-fuel cells, have the potential for replacing conventional batteries. Recharging a conventional battery may take hours, but once the commercial versions are available replacing a fuel cartridge should take a few seconds.

The two prime dangers from fuel cell and hydrogen-powered vehicles are the danger of electrical shock and the flammability of the fuel. Fuel cells power vehicles by electro-chemically combining hydrogen gas (H2) and oxygen (O2) from the surrounding air into water (H20) and electrical energy.

Natural Gas

A motor fuel is a fuel that is used to provide power to motor vehicles. Currently, the majority of motor vehicles worldwide are powered by gasoline or diesel. Other energy sources include ethanol, biodiesel, propane, compressed natural gas (CNG), electric batteries charged from an external source, and hydrogen.

Fuel meaning: Meaning of fuel is a substance that is burned to provide nuclear energy, heat or power. Materials like coal, wood, oil, or gas can provide heat when burned….Examples of Fuel

• Methanol.
• Gasoline.
• Diesel.
• Natural gas.
• Hydrogen.
• Biodiesel.

Chemical

Fuels may be classified as follows: Based on their occurrence, they are classified as natural fuels and artificial (or prepared) fuels. Based on their state, they are classified as solid fuels, liquid fuels, and gaseous fuels.

The materials which burn to produce heat energy are know as fuels. 5 Examples of fuels are : Wood,Coal,LPG, Petrol, Kerosene.

Examples of Fuels:

Examples: Biogas, fossil fuels, nuclear energy, etc. The fuel can be classified as renewable source of energy which are inexhaustible for example Solar energy and non-renewable source of energy which are exhaustible for example fossil fuels.

Coal, natural gas, and petroleum are all fossil fuels that formed under similar conditions. Today, petroleum is found in vast underground reservoirs where ancient seas were located. Petroleum reservoirs can be found beneath land or the ocean floor. Their crude oil is extracted with giant drilling machines.

If oil is constantly being formed by the heat and pressure of the earth’s mantle, is there enough oil to last us forever? The short answer is no. We’re quickly using up all the accessible oil in the planet’s crust, and it will take millions of years for more to form.

Oil and natural gas do not come from fossilized dinosaurs! Thus, they are not fossil fuels. It was subsequently used more ubiquitously in the early 1900s to give people the idea that petroleum, coal and natural gas come from ancient living things, making them a natural substance.

Natural gas

Coal, crude oil, and natural gas are all considered fossil fuels because they were formed from the fossilized, buried remains of plants and animals that lived millions of years ago.

coal, oil, or natural gas. Fossil fuels formed from the remains of ancient plants and animals. gas in the atmosphere, such as carbon dioxide, methane, water vapor, and ozone, that absorbs solar heat reflected by the surface of the Earth, warming the atmosphere.