sulphonated coal

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Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… … Wikipedia
Timeline of hydrogen technologies — A timeline of the history of hydrogen technology.Timeline1600s* 1625 First description of hydrogen by Johann Baptista van Helmont. First to use the word gas . * 1650 Turquet de Mayerne obtained by the action of dilute sulphuric acid on iron a gas … Wikipedia

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