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.
Water is split by a OEC (oxygen evolving complex) containing ions of Mn, Cl, calcium and oxygen atoms present associated with PS II; not with PS I. Also electrons required to neutralise charge created by exit of electrons from the reaction centre chlorophyll molecules are first donated by tyrosine residues present in the PS II component.