The great truth is that there are few geniuses but many get a glimpse mastering some specialty. They then slip into making a living teaching it all and natually lose the inventive edge. Soon enough they consider themselves over the hill which is rubbish.
Genius is pursuing important question with the skills at hand. This chap has pursued the problem of the battery for decades. He never gave it up and what makes it so fruitful is that the problem is so intractable.
It took me twenty years to figure out how to build the Great pyramid using Bronze Age tech. Yet once solved that is it. Many other problems go the same way.
Understanding the space time pendulum took a difficult thought experiment, informed by mathematics newly created after decades of consideration and a simple change in perspective to allow me to use this language.
The real secret is to pursue many problems simultaneously to the limit of your resources and to not mind putting a linage on the shelf until new data or insight reopens the approach.
This discovery is going to be very important as it provides a practical high capacity battery once and for all.