6.2 Metal–Carbon Nanocomposites as Anode Materials …
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Fig. 6.3 A green molten salt process for the large-scale fabrication of graphene-wrapped silicon nanocomposites. a A graphite electrode is negatively polarized in molten salt against another
graphite electrode served as the anode under an atmosphere of Ar–4% H 2 . The graphite cathode
surface becomes exfoliated into graphene nanosheets. Si nanoparticles are then gradually injected
into the molten salt, leading to the formation of a unique nanocomposite in which Si nanoparticles
embedded on layers of 3D graphene are partially wrapped by single or few layers of graphene.
b Photographs of graphite and Si starting materials as well as the eroded graphite extracted from
the molten salt, and the graphene–Si product stored in a jar, reproduced from Ref. [4], copyright
2019, with permission from RSC Publishing
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