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Phys Chem Chem Phys. 2012 Oct 5;14(37):12741-5. doi: 10.1039/c2cp42231j. Epub 2012 Aug 10.

Silicon core-hollow carbon shell nanocomposites with tunable buffer voids for high capacity anodes of lithium-ion batteries.

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1
Department of Mechanical & Nuclear Engineering, the Pennsylvania State University, University Park, Pennsylvania 16802, USA.

Abstract

Silicon core-hollow carbon shell nanocomposites with controllable voids between silicon nanoparticles and hollow carbon shell were easily synthesized by a two-step coating method and exhibited different charge-discharge cyclability as anodes for lithium-ion batteries. The best capacity retention can be achieved with a void/Si volume ratio of approx. 3 due to its appropriate volume change tolerance and maintenance of good electrical contacts.

PMID:
22886283
DOI:
10.1039/c2cp42231j
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