Nanocomposite　particles　of　amorphous　carbon-Li4Ti5O12　(C-LTO)　and　carbon　nanotube-Li4Ti5O12　(CNT-LTO)　were　synthesized　by　solvothermal　method　and　subsequent　high-temperature　calcination.　X-ray　diffraction　(XRD),　transmission　electron　microscopy　(TEM),　high-resolution　transmission　electron　microscopy　(HR-TEM),　and　selected　area　electron　diffraction　(SAED)　were　applied　to　characterize　the　phase　structure,　particle　morphology,　and　the　coating　structure.　XRD　analysis,　TEM　micrographs,　HR-TEM　images　and　SAED　analysis　revealed　that　both　LTO　particles　exhibited　a　well-developed　spinel　nanocrystal　structure　with　average　sizes　between　20-70　nm.　The　C-LTO　particles　exhibited　roughly　spherical　shape　coated　by　an　amorphous　carbon　layer　up　to　10　nm　in　thickness.　The　CNT-LTO　samples　showed　uniform　square　nanocrystals　with　edge　length　around　20　nm　and　nanoscale　graphitic　layers　covering　the　surface,　revealing　the　carbon　nanotubes　interconnection　networks　among　the　particle　assemblies.　Electrochemical　studies　of　lithium　insertion/extraction　performance　are　evaluated　by　the　galvanostatic　charge/discharge　tests,　cyclic　voltammetry　(CV)　and　electrochemical　impedance　spectroscopy　(EIS).　Both　LTO　particles　showed　the　superior　initial　discharge　capacity　of　more　than　200　mAh/g　at　1/10C　rate.　The　irreversible　capacity　of　the　C-LTO　particles　at　more　cycles　was　due　to　large　polarization　resulted　from　excessive　carbon　and　possible　residual　precursors.　The　CNT-LTO　particles　show　larger　reversible　capacity　and　enhanced　electrochemical　Li+　insertion/extraction　kinetics　at　different　cycling　rates.　The　comparative　structural　and　electrochemical　analyses　demonstrated　that　both　nanoscale　graphitic　covering　layers　and　the　CNT　interconnection　networks　increase　the　electronic　conductivity　and　improve　the　kinetics　rates　of　lithium　insertion/extraction　in　the　CNT-LTO　particles.