Scientists can make laptop batteries from ink and paper

Scientists from Stanford University used nanotechnology to create ultra-lightweight, flexible batteries and supercapacitors from ordinary paper. They just covered a sheet of paper with ink comprising carbon nanotubes and silver nanowires. And as a result they got a new storage device that can be used for production of innovative power supplies (laptop batteries, chargers for mobile phones, electric vehicles, etc.).

Capacitors can hold their charge for smaller period of time compared to batteries, but they can also be charged much faster. Professor Yi Cui (Stanford researcher) claims that used nanomaterials contain structures with a very small diameter, allowing ink to attach to fibrous paper. So it makes the paper batteries resistant to wear. Moreover, they can be recharged about 40,000 times (it’s incommensurably more than corresponding characteristics of lithium-ion batteries).

Yi Cui tried to create an analogous storage device form plastic earlier. But his new study shows that paper-based solution has greater prospects. This battery can be crumpled, placed into liquids (even acidic solutions!) without any damage to its performance.

Calculations show that paper with a kilogram of ink can power a 40-watt bulb for about an hour. It’s not an impressive result, but you should take into account that scientists are running their first experiments now. Be sure, after a couple of years your laptop battery will be much thinner and lighter in weight, allowing you to enjoy liаe without chargers and AC adapters for days, not hours.

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