Biography & Contributions
Christian Friedrich Schonbein was a German-Swiss chemist born on October 18, 1799 – died on August 29, 1868. Schonbein was best known for inventing fuel cell, discovering guncotton and ozone.
What is Fuel cell?
A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction of positively charged hydrogen ions with oxygen or another oxidizing agent.Fuel cells are different from batteries in that they require a continuous source of fuel and oxygen or air to sustain the chemical reaction, whereas in a battery the chemicals present in the battery react with each other to generate an electromotive force. Fuel cells can produce electricity continuously for as long as these inputs are supplied.
The first commercial use of fuel cells came more than a century later in NASA space programs to generate power for probes, satellites and space capsules.
Fuel cells are used for primary and backup power for commercial, industrial and residential buildings and in remote or inaccessible areas. Fuel cells are also used to power fuel-cell vehicles, including forklifts, automobiles, buses, boats, motorcycles and submarines. Fuel cells are very useful as power sources in remote locations, such as spacecraft, remote weather stations, large parks, communications centers, rural locations including research stations, and in certain military applications.
As of current year 2015, two Fuel cell vehicles have been introduced for commercial lease and sale in limited quantities: the Toyota Mirai and the Hyundai ix35 FCEV.
Ozone is a colorless or slightly bluish, inorganic molecule with the chemical formula O3. It is a pale blue gas with a distinctively pungent smell. Ozone is an allotrope of oxygen that is much less stable than the diatomic allotrope O2, breaking down in the lower atmosphere to normal dioxygen. Ozone is formed from dioxygen by the action of ultraviolet light and also atmospheric electrical discharges.
Ozone is used as an alternative to chlorine or chlorine dioxide in the bleaching of wood pulp. It is often used in conjunction with oxygen and hydrogen peroxide to eliminate the need for chlorine-containing compounds in the manufacture of high-quality, white paper. Ozone can be used to detoxify cyanide wastes by oxidizing cyanide to cyanate and eventually to carbon dioxide.
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