Lithium-Ion Batteries: Dual-Functionalized Double Carbon Shells Coated Silicon Nanoparticles for High Performance Lithium-Ion Batteries (Adv. Mater. 21/2017)

In article 1605650, Yan Yu and co-workers introduce a "double-carbon-shell" concept in lithium-ion batteries, by which dual functions are performed: confining the volume change of silicon and stabilizing the solid electrolyte interface (SEI). Multi-point contacts substantially increase the electronic conductivity and decrease the Li⁺ diffusion length to the nanoscale. Such a concept can be applied to synthesize materials with large volume changes in cycles by simultaneously enhancing the electronic conductivity and controlling the SEI growth of lithium-/sodium-ion batteries.

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