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a) Scanning electron microscopy (SEM) image of the LixSi electrode formed by microsized carbon particles containing nanosized lithiated silicon particles, here highlighted by yellow circles. Also the coverage by an SEI film during the lithiation process is clearly shown. b) Voltage profiles of the lithiated‐silicon/carbon‐oxygen cell. Cycling current is 200 mA g–1. Reproduced with permission.151 Copyright 2012, American Chemical Society.
