This is a big step forward, though the battery can currently produce only 2v (lithium ion batteries typically produce about 4v).

[Stanford Chemistry professor Hongjie Dai] believes overcoming this problem is not impossible. “Improving the cathode material could eventually increase the voltage and energy density,” he said.

This is promising. This battery tech is malleable, meaning a better fit for non-rectangular devices, yielding longer life and lighter batteries.

Aluminium!