Most fuel cells in the world today run on hydrogen. However, as the fuel gets more complex, this oxidation process becomes vastly more complicated. Once carbon atoms are in the fuel, carbon monoxide poisoning of typical fuel cell catalysts becomes problematic.
Bromine dissociates in water in the same manner as chlorine, by forming hypobromous acid and the hypobromite ion. Hypobromous acid is a weak acid that partially dissociates to form a hydrogen ion and a hypobromite ion.
The Halides. Halides are formed by combining a metal with one of the five halogen elements, chlorine, bromine, fluorine, iodine, and astatine. Many of these compounds will dissolve in water. Because of this solubility they usually occur only under special conditions.