Enhancing conductivity and stabilizing structure of the TiN/SnO2 embedded in ultrathin graphite nanosheets as a high performance anode material for lithium ion batteries

The composite of TiN/SnO 2 @C nanosheets has been synthesized via ball milling . In the sheet-like structure, the TiN/SnO 2 nanoparticles were evenly anchored in the graphite nanosheets . The TiN nanoparticles can not only increase the electron conductivity, but also stabilize the structure in Li + insertion/extraction. Besides, the sheet-like graphite can accommodate the volumetric expansion during cycling. Consequently, high specific capacity (837.0 mAhg −1 after 100 cycles at 0.2 Ag −1 ), remarkable rate property (466.8 mAhg −1 at 5.0 Ag −1 ) and long-life cycling performance for the TiN/SnO 2 @C nanosheets can be achieved in electrochemical performance measurement. The composite of TiN/SnO 2 @C nanosheets will become promising anode material for lithium ion batteries in the next generation.