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Study sees gradual, focused replacement of lead-acid SLI batteries by Li-ion batteries over next couple of years

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This energy sector is primarily driven by the need for low-cost with reasonably long cycle-life energy storage technology, for which the lead-acid battery is well suited. There will still be a need for a 12 V battery for the supply of auxiliary power that will not necessarily be a Pb-acid SLI battery. —Ferg et al.

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Stanford, SLAC team cages silicon microparticles in graphene for stable, high-energy anode for Li-ion batteries

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The graphene cage acts as a mechanically strong and flexible buffer during deep cycling, allowing the silicon microparticles to expand and fracture within the cage while retaining electrical connectivity on both the particle and electrode level. —Yi Cui. Here we introduce a method to encapsulate Si microparticles (∼1–3 µm).

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