The energy density of batteries is tremendously important as an enabler of new technologies. Meanwhile, the scramble to create ever more powerful batteries has even led some manufacturers to contemplate powering cell phones with energy-dense hydrocarbons like propane.
This is why the claims made for an extremely early-stage "ultra-battery" recently announced in the journal Nature Chemistry are so remarkable.
"If you think about it, [this] is the most condensed form of energy storage outside of nuclear energy," said inventor Choong-Shik Yoo of Washington State University. Yoo's ultra-battery consists of "xenon difluoride (XeF2), a white crystal used to etch silicon conductors," compressed to an ultra-dense state inside a diamond vice exerting a pressure of more than two million atmospheres.