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Samsung Researchers Nearly Double Lithium-ion Battery Capacity

Silicon is receiving considerable attention as an active material for next- generation lithium-ion battery anodes because of its gravimetric capacity—a measure in mAh/g of the total charge capacity stored by the cell or battery, per gram of the battery’s weight. Unfortunately, the large volume change of silicon during charge/discharge cycles has in the past weakened its competitiveness. Recently, however, a research group from Samsung reported in the publication Nature Communications that using direct graphene growth over silicon nanoparticles without silicon carbide formation resulted in a near doubling of run-time by expanding energy density— the amount of stored power in a given area — to 1.8 times that of current batteries.” - Link