travelling electrons effect

electrons travel in orbit around the nucleus in atoms and molecules 

within those electron orbits there is a lot of space 

so that electrons are loosely packed with each other in matter 

but when there is a electric discharge in vacuum 

then the electrons that are travelling in vacuum 

are probably more tightly packed with each other 

if that travelling electrons effect could be used 

to pack electrons tightly together in a battery 

then that would be an extremely powerful battery