Tired of your laptop battery degrading? New 'pulse current' charging process could double its lifespan.

Scientists have devised a new charging protocol for lithium-ion batteries that could double the lifespan of batteries used in smartphones and laptops.

The batteries in many laptops, for instance, can last up to five years before weakening — or 300 to 500 charge cycles — according to the laptop manufacturer Lenovo. The best batteries, meanwhile, have a service life of up to eight years, the scientists said. These normally have electrodes made of a compound called NMC532 as well as graphite.

In constant current batteries, the electrolyte interface at the anode — where there is an exchange of electrons between the electrolyte material and the positively charged electrode — was significantly thicker. This limited how much charge it could hold. There were also more cracks in the NMC532 and graphite electrodes, which reduced battery charging capacity.

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Computing 'paradigm shift' could see phones and laptops run twice as fast — without replacing a single componentKeumars is the technology editor at Live Science. He has written for a variety of publications including ITPro, The Week Digital, ComputerActive, The Independent, The Observer, Metro and TechRadar Pro. He has worked as a technology journalist for more than five years, having previously held the role of features editor with ITPro.
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