Electric vehicle drivers and smartphone power users have been salivating over the prospect of silicon anode batteries, which promise to dramatically boost energy density and lower charging times. Several companies have been working on silicon anodes over the last decade or so, and the tech has started creeping into consumer electronics. Wearable maker Whoop, for example, uses materials from Sila , while Group14 ‘s batteries can be found in a range of smartphones. But the real prize is the EV