Super Capacitors5 Aug 2018 19:34
They hold electricity physically ie on the surface. Problem is they discharge even thru the air.
Some see this as an insurmountable problem ...... Ie they will always leak power.
One way to use them would be to piggy back them on a Li battery. When you charge the capacitor in 3 mins you can then drive off (pay first at the kiosk) and as you drive the capacitor discharges into the Li battery.
See that's clever !!
Because Li is a chemical state change on charging it is much more stable. Only prob is to inhibit the formation of the dendrites which provide points for charge density to build up.... ... Heat up the battery and cause fires. That's why theCo is used to keep the Li structure homogenous.