Researchers at the University of Waterloo in Canada have created a cathode capable of sustaining a reversible electrochemical reaction at high current rates, a discovery which they claim is a crucial step forward in the creation of lithium-sulphur rechargeable batteries and paves the way for better electric cars.

At present, lithium-sulphur batteries are what most people believe to be the best hope for batteries for electric cars. They are touted as the next generation of rechargeable batteries because they have an energy density which is far greater than the standard lithium-ion batteries. This means that using lithium-sulphur batteries will mean batteries can be made smaller with a higher capacity, as well as being cheap and made from less toxic parts. Lithium-sulphur batteries are also said to be less volatile than their lithium-ion counterparts.  Read more... (304 words, estimated 1:13 mins reading time)