Nanostructured electrodes are among the most important candidates for high-capacity battery chemistry. However, the high surface area they possess causes serious stability, cycling and safety issues associated with the solid-electrolyte interface. In this work, Qian et al. present a completely new strategy of limiting the effective surface area by introducing an “electrolyte-phobic surface”. In this approach, the surface of the active material is coated with a chemically tethered perfluorocarbon that provides it with a unique nonwetting behavior making it impervious to the electrolyte. The concept could prove to be a general strategy for minimizing the accessible surface area of high-surface-area materials in future applications in advanced batteries.
See full article at Nano Letters.
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