New Graphene electrodes for supercapacitors are close to lithium ion battery energy densities and can make all in one solar film and stoarge for self powering devices
“A new graphene based electrode created by RMIT University researchers could boost the capacity of existing integrable storage technologies by 3000 per cent.
Theoretical analysis using an analytical equivalent circuit model shows that the enhancement of the areal capacitance is up to 300 times for Hilbert BFE electrodes compared to its planar electrode counterpart. The graphene-based prototype also opens a new path to the development of flexible thin film all-in-one solar capture and storage, bringing us one step closer to self-powering smart phones, laptops, cars and buildings…”
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http://www.nextbigfuture.com/2017/04/new-graphene-electrodes-for.html