@article{32577,
  author = {Niantao Liu and Xamxikamar Mamat and Ruyuan Jiang and Wei Tong and Yudai Huang and Dianzeng Jia and Yongtao Li and Lei Wang and Thomas Wågberg and Guangzhi Hu},
  title = {Facile high-voltage sputtering synthesis of three-dimensional hierarchical porous nitrogen-doped carbon coated Si composite for high performance lithium-ion batteries},
  abstract = {<p><span>Various kinds of efforts have been devoted to ameliorate the serious volume-expansion effect and low electron conductivity of silicon-based materials in lithium ion batteries. Here, we report a facile high voltage sputtering process to prepare three-dimensional hierarchical porous nitrogen-doped carbon coated Si microsphere to significantly improve the lithium storage performance. The structure and morphology of the as-obtained samples are characterized by X-ray diffraction, transmission electron microscope and scanning electron microscope. The results indicate that the as-prepared composite is composed of silicon nanoparticles (∼100 nm) coated with conductive thin carbon layer (∼8.5 nm). The composite shows excellent lithium storage performance with a reversible capacity of 1565 mAh g</span><span>−1</span><span>&nbsp;after 100 cycles at a current density of 0.5 A g</span><span>−1</span><span>, as well as a long cycling performance at the high current density of 2 A g</span><span>−1</span><span>. The facile preparation process and highly silicon-loading (∼78%) makes the prepared material be a great potential application in lithium-ion batteries.</span></p>},
  year = {2018},
  journal = {Chemical Engineering Journal},
  volume = {343},
  pages = {78 - 85},
  month = {07/2018},
  issn = {13858947},
  doi = {10.1016/j.cej.2018.02.111},
  language = {eng},
}