So I came across an article called "Giant polarization in high polymers" and I was wondering if there was a reason why these types of polymers haven't found use in capacitors at this point. This being ekaconjugated polymers which can store energy using nomadic polarization. Perhaps the issue is with dielectric loss? The paper also reports results at high pressures. I've found surprisingly little on this concept in the last twenty years (with basic searches).