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Www.batteryfast.co.uk graphene-will-improve-smartphone-batteries-life-ten-times

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Have you heard of graphene? If not this little wonder material could be the thing that helps your smartphone last longer than half a day in the not so distant future. We examine how this material will ...

Have you heard of graphene? If not this little wonder material could be the thing that helps your smartphone last longer than half a day in the not so distant future. We examine how this material will help your mobile phones battery life be extended by up to ten times.

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Www.batteryfast.co.uk graphene-will-improve-smartphone-batteries-life-ten-times Www.batteryfast.co.uk graphene-will-improve-smartphone-batteries-life-ten-times Document Transcript

  • December 24, 2011 batteryfast.co.uk Graphene Will Improve Smartphone Batteries Life Ten Times Improved battery life for smartphones – the holy grail: Now when you hear of people playing down theissue of battery life, ask yourself this, would you rather it improved or happy that it stayed the same?It has been quite the challenge to ensure that our belo- ved mobile devices can keep up with the amount of power that we bestow in them, and where “moores” law dictates that things can get smaller and smaller and quicker and quicker, the law of the “li-ion” does not follow suit, so having a laptop inside a thimble with quad core processing makes for one particu-http://www.batteryfast.co.uk/battery-technology/graphene-will-improve-smartphone-batteries-life-ten-times/ larly pathetic thimble, apart from the five minutes that it can open up iTunes in two seconds flat and Have you heard of graphene? If not this little won- play Angry birds for mice in 3D. Yes, it looks pretty der material could be the thing that helps your cool for a while, but alas they never last! smartphone last longer than half a day in the not so distant future. We examine how this material will You see there is only one answer to that, and where help your mobile phones battery life be extended I can safely, and happily say that my smartphone by up to ten times. screen should stay the same size, the battery life does need improving. Graphene the wonder material improves battery life: Smartphone battery charge time increased by a factor of ten? We have talked about smartphone battery life issues in various articles, ranging from one big moan to a Taking a look at a TechCrunch article from back guide on getting the most from your devices puny in November that I totally missed, it would appear little battery. that a professor at Northwestern university called Harold Kung has devised an ingenious way of uti- But now we are hearing that the wonderful material lising the wonder material that is graphene and the we wrote about ages ago called Graphene could integrating it into the structure of li-ion batteries end up being a smartphone battery saviour, as well in order to increase both the charge capacity and as its material of choice in years to come. charge speed of this type of battery. They key is in the way Graphene is layered in between the lithium ions, as the ions move across Love this PDF? Add it to your Reading List! 4 joliprint.com/mag Page 1
  • December 24, 2011 batteryfast.co.uk Graphene Will Improve Smartphone Batteries Life Ten Times the layers of graphene, the speed in which this oc- Essentially, what is needed to increase the capacity curs directly relates to the speed that it can charge. of li-ion batteries is to be able to insert small clusters of silicon in between each graphene slice which al- Helping to accelerate this process the professor de- lows more ions to collect and gather at the electrode cided to poke millions of tiny holes into the graphene end, increasing capacity, the fact that graphene and layers of around 10-20nm in size, this helped to pro- silicon are malleable helps this process work. vide a “shortcut” for the ions to travel. Which in-turn helped to charge the battery ten times quicker than “Now we almost have the best of both worlds, normal cells would be able to achieve. we have much higher energy density because of the silicon, and the sandwiching reduces the Smartphone battery capacity extended: capacity loss caused by the silicon expanding and contracting. Even if the silicon clusters break up, the silicon won’t be lost.” The downside is that the charge capacity and speed of charge degrades sharply after 150 charges, but as was pointed out, you are pretty much well into your second year of use at that point as the chargehttp://www.batteryfast.co.uk/battery-technology/graphene-will-improve-smartphone-batteries-life-ten-times/ lasts so long anyway. This is seriously great news for device manufac- turers who right now need to work on ways to im- prove their smartphone battery life until this kind of technology becomes affordable, and practical and is present in every single phone sold. Related Articles: So not only has professor Harold Kung found a way to Did you enjoy this post? Why not leave a comment speed up the charge time for li-ion batteries, he then below and continue the conversation, or subscribe went on to mess about with some more concepts to my feed and get articles like this delivered auto- and test the results out. matically to your feed reader. The second of which increased the overall capacity of the battery by another factor of ten, meaning that you could almost get a full week from one charge if these were to be rolled out as production battery sets. And the key to this achievement was the fact that graphene is so malleable, and so avoided negative effects of the silicon expansion issues that beset earlier attempts to achieve similar results. Love this PDF? Add it to your Reading List! 4 joliprint.com/mag Page 2