I bet the super battery of the future have machine elements, parts that have not been thought of yet.
So to get going I wonder if imagination or philosophy could be used to home in on the interesting things.
So for example. We have thin TV’s. This to me could be something like a ?membrane. It could perhaps be the inspiration of a machine element. What if the LCD screen were super bright, had infrared as well as ultra violet light. What use can it then have?
Regardless of the machine element immediate practical use. Building up a catalog of thought machine elements could be key.