How do these batteries work? Different types of li-ion batteries make use of different types of cathodes. The cathodes are made of lithium molecules. Generally, the anodes are made of carbon. As with other types of batteries, the chemical reaction that happen between
the cathode, anode and the electrolyte generate electric current.Aside from this, the stuff used for these will affect the cost, capacity, performance and the safety of a certain type of battery. Li-ion batteries, for instance, that feature a lithium cobalt oxide cathode can give you a bit higher capacity. However, they are more reactive because of the lower thermal capacities.