Well this is just cool...
Forgetful Scientists Accidentally Quadruple Lithium-Ion Battery Lifespan
Battery technology goes through periodic bouts of breakthroughs followed by long, long, periods of quiescence characterized by product development.
I like the article's focus on chemical elements -- lithium and aluminum.
I found this article while googling tips to conserve lithium-ion battery life.
Seek and ye shall find.