I think that the idea of switching to any form of electric propulsion for transport is only justified, given the state of world political thought, if you either a) prefer an almost silent form of propulsion, b) you wish to economise on the cost of burning hydro-carbon fuel, or c) you cannot conscientiously face adding CO2 to the atmosphere. If "c" then you need to consider the addition of CO2 as a by product of the manufacture of the aircraft and rule out aviation entirely. It is common knowledge that we don't have the proverbial snowball's chance in hell of avoiding average atmospheric temperature increase of less than 2deg C even if , by some miracle (and I don't agree with Scummo in miraculous beliefs), we started to seriously de-carbonise tomorrow.
As discussed widely in other aviation forums, a new form of battery is not within a bull's roar of the present. Simply put, individuals chasing electric power solutions have only a tiny effect on the carbon load in the atmosphere.