That's absurd reasoning. Once you have a battery system, you don't worry about Carnot's theorem and therefore you aren't limited by the efficiency limits of hea

That's absurd reasoning. Once you have a battery system, you don't worry about Carnot's theorem and therefore you aren't limited by the efficiency limits of heat engines. It's pretty much an imaginary limit after that, and is similar to all of those people who didn't think Moore's Law could continue past some arbitrary point. Hydrogen and lithium are both on the same column and have one electron in their outer shell. They should have very similar chemical properties. You're just demonstrating the problem I was talking about: That the facts should be driving a strong motivation to solve these problems. Instead, it is just a series of excuses to not try. As if climate change just wasn't something to worry about.