Forget today’s primitive energy storage devices — one day we may use “ultra batteries” made out of xenon and fluoride. Currently under development at Washington State University, these ultra-batteries can store more condensed energy than any other type of battery in existence.
Researchers at Washington State developed the battery by placing xenon difluoride (a white crystal often used to etch silicon conductors) in a tiny diamond anvil cell (measuring two inches by three inches). The cell squeezed the xenon difluoride molecules to a million atmospheres of pressure — the same amount of pressure found halfway to the center of the planet — and triggered the molecules to store mechanical energy from the compression process as chemical energy that can be used in a number of applications.
If the research pans out, expect super-batteries to dominate the fuel cell market of the future.