I checked the ceramic batteries but all I found was replacing electrolyte with ceramic materials. This won't solve all the problems, only some that occur due to

I checked the ceramic batteries but all I found was replacing electrolyte with ceramic materials. This won't solve all the problems, only some that occur due to physical damage. Since the wikipedia energy density is to my knowledge based on raw chemical performance, there would be no change as ceramics would only allow you to pack existing battery packs more densely. And we're still talking about 2700 tons of battery to carry with the plane. Even if you improved the performance of a battery by an order of magnitude overnight, you'd still perform significantly worse than petrol fuel. Regarding the taxi fuel; that includes other fuel consumption like the APU burning until engine start and 2 tonnes would be the standard usage for larger airports, smaller ones have 1 ton. Also consider that I calculated pure flight performance, if you'd use electric engines to taxi then you'd need an even bigger battery that you can't shed. Taxing by a tow truck is possible but likely too slow (you have to pull an entire airplane). Regarding landing; Spaceshuttles are hardly comparable to normal airplanes. The Spaceshuttle when landing goes a lot faster than most airplanes can safely do at that altitude and requires all brakes and a parachute to slow down on an extra long runway. Airplanes already minimize fuel consumption when there is no engine really needed but for landing a normal airplane you need the engines 999 out of 1000 times.