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For all of the progress we've made with mobile devices, they're still limited by relatively older technology. Namely: The batteries that power them typically get us through a day or so.

Samsung's research group may be on to something that nearly doubles that run-time by expanding the energy density -- the amount of stored power in a given area -- to 1.8 times of current batteries.

On Friday, Neowin noted that the research team published its experimental findings, explaining how it achieved this result in the labs.

Samsung's team used silicon anodes in lieu of graphite ones; an approach many efforts in this space have taken. The challenge here though is that the silicon can expand or contract during the battery charging and discharging cycles.

To counter that, Samsung's team created a process to grow graphene cells directly on the silicon in layers that can adjust to allow for the silicon's expansion:

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