That's hilarious, you started talking about the obvious limitation of battery technology (limitations based in common high school chemistry and physics), and them you leave the door open for an battery powered unicorn to appear LOL.No. There are huge financial rewards for any engineer, or team of engineers, that comes up with such a breakthrough. There are already many attempting it. As was made plain much earlier in this thread, there are hard chemical limits to all this. Only so many free electrons in so many atoms in any battery. Wishful thinking, or bragadoccio, or desperate prophecies, won't bring it any closer. It's far more complicated than that.
Like I've said before, someone developing something truly revolutionary is going to keep quiet about it until they have applied for patents in just about every country. It might suddenly appear. That's how the Wrights did it.