The big companies are ignoring the sector and just plan on buying the most profitable startups that look promising.

So ignore the fortune 1000 entirely and invest in smaller companies that are hiring engineers in chemistry if your goal is to invest effectively in battery technology.

But you are missing the advances in metallurgy (superconducting metals are making great strides), mechanical engineering (flywheel technology is taking advantage of new micro-controlled magnetic bearings) and physics.