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- W2012117819 abstract "Abstract TiO 2 microspheres containing carbon have been synthesized via a one-pot hydrothermal process using CTAB as the mesoporous template and nanoparticle stabilizer and Ti(SO 4 ) 2 and sucrose as titanium and carbon precursors, respectively. Through well designed calcinations, TiO 2 microspheres with various amounts of carbon-residue, such as core/shell C@TiO 2 , hollow neat H–TiO 2 , and hollow C/TiO 2 composites, are obtained. When these microspheres are used as anode materials for lithium ion batteries, the lithium storage performance is significantly influenced by the structure and carbon-residue. With a thin shell of TiO 2 nanoparticles and carbon-residue, the capacity of hollow C/TiO 2 composites maintains at 143.3 mA·h·g − 1 at 0.5 C (83.5 mA·g − 1 ) after 100 cycles. Moreover, after high rate charge/discharge cycles from 0.2 C to 20 C and back to 0.2 C again, the reversible capacity recovers atas high as 195.1 mA·h·g − 1 with respect to its initial value of 205.0 mA·h·g − 1 . The results of cycle voltammograms and electrochemical impedance spectroscopy further reveal that Li + insertion/extraction processes are reversible, and the diffusion coefficient of Li + in the hollow C/TiO 2 composites is much higher than those of others, because the hollow structure can act as the ion-buffering reservoir and facilitate Li + transfer from both sides of the shell, and the carbon-residue in the shell improves the conductivity as well." @default.
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- W2012117819 date "2014-10-01" @default.
- W2012117819 modified "2023-10-16" @default.
- W2012117819 title "Lithium Storage Performance of Hollow and Core/Shell TiO2 Microspheres Containing Carbon" @default.
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- W2012117819 doi "https://doi.org/10.1016/j.cjche.2014.09.005" @default.
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