But one startup featured at CES this week has produced a battery made of paper, believe it or not. Flint’s paper battery is poised to provide a more sustainable and affordable alternative to ...

Flint's flexible, rechargeable paper batteries could one day replace their lithium-ion counterparts in your smartwatch, phone and more. Katie a UK-based news reporter and features writer.

The donut-shaped model — which is supported by a silk protein sponge scaffold — used by the Tufts team was first developed in 2014, in the lab of David Kaplan, a senior author on the paper.