Are electric supersonic aircraft possible?

Could a plane fly faster than sound powered only by electric motors? An article on EVWorld.com explains how it could be done.

The motors that would drive such and aircraft would not be like the one inside a hybrid car. Most likely, they would be powered by special superconducting cells that could store enormous amounts of electricity.

Before an electric plane breaks the sound barrier, it is more likely that electric motors would find use in smaller commuter aircraft first.