a b s t r a c t As thecontributionofelectricitygeneratedfromrenewablesources(wind,waveandsolar)grows,the inherent intermittencyofsupplyfromsuchgeneratingtechnologiesmustbeaddressedbyastep- change inenergystorage.Furthermore,thecontinuouslydevelopingdemandsofcontemporary applicationsrequirethedesignofversatileenergy-storage/powersupplysystemsofferingwideranges of powerdensityandenergydensit…