Batteries of the future can be painted on

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With the number of gadgets and gizmos that are in our possession these days, it makes perfect sense that we always have one thing at the top of our minds at all times – that is, the battery life of our devices. This is even more glaring when we are talking about going traveling – the number of chargers that we need to pack, in addition to the right adapter (especially when one is heading off for a foreign country on a different continent altogether), could prove to be quite a headache. Not only that, newer devices come with better and faster functions, so much so that advancements made in battery technology keep up with just enough to last as long as its previous generation, as it caters to the new features.

How about the idea of spray painting your own batteries? This is where future batteries might be headed, as one is able to paint batteries onto standard bathroom tiles, steel, glass – and even a beer stein! This particular battery is made possible thanks to five separate layers, where each of them has its own recipe, and together they measure a mere 0.5mm thick – or should we say, thin?

In order to demonstrate this particular technique, the team behind the battery actually spayed the batteries onto steel, glass, ceramic tile and a beer stein. This breakthrough will definitely be of particular interest in industrial applications, since it is compatible with current spray-painting technology. Right now, the most common batteries comprise of negative and positive halves (the anode and the cathode), with a material in between to separate them, while “current collector” layers are located at the top and bottom to gather up the electric charges which move through.

Plenty of batteries are constructed in a geometry that is not too far off from that of a “Swiss roll” cross section, where layers are rolled up into a cylindrical or round-edged rectangular shape. Guess the spray on battery idea from Rice University in Texas, US, has paved open a new way to place batteries on just about any surface.

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