Highly Graphitized Carbon Coating on SiO with a π⁻π Stacking Precursor Polymer for High Performance Lithium-Ion Batteries.

ABSTRACT: A highly graphitized carbon on a silicon monoxide (SiO) surface coating at low temperature, based on polymer precursor π⁻π stacking, was developed. A novel conductive and electrochemically stable carbon coating was rationally designed to modify the SiO anode materials by controlling the sintering of a conductive polymer, a pyrene-based homopolymer poly (1-pyrenemethyl methacrylate; PPy), which achieved high graphitization of the carbon layers at a low temperature and avoided silicon carbide formation and possible SiO material transformation. When evaluated as the anode of a lithium-ion battery (LIB), the carbon-coated SiO composite delivered a high discharge capacity of 2058.6 mAh/g at 0.05 C of the first formation cycle with an initial Coulombic efficiency (ICE) of 62.2%. After 50 cycles

SUBMITTER: Fang S 

PROVIDER: S-EPMC6403587 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature