title: Nano/Micro-Structured Si/C Anodes with High Initial Coulombic Efficiency in Li-Ion Batteries.
abstract: One of the major challenges for designing high-capacity anode materials is to combine both Coulombic efficiency and cycling stability. Herein, nano/micro-structured Si/C composites are designed and synthesized to address this challenge by decreasing the specific surface area and improving the tap density of Si/C materials. An ultrahigh initial Coulombic efficiency of 91.2 % could be achieved due to a proper particle size, low specific surface area, and optimized structure. The nano/micro-structured Si/C anodes exhibit excellent cycling stability with 96.5 % capacity retention after 100 cycles under a current density of 0.2 A g(-1) .
authors: CAS Key Laboratory of Molecular Nanostructure&Nanotechnology and, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors: Quan
authors: Q
authors: Xu
authors: CAS Key Laboratory of Molecular Nanostructure&Nanotechnology and, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.|University of Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors: Jin-Yi
authors: JY
authors: Li
authors: CAS Key Laboratory of Molecular Nanostructure&Nanotechnology and, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.
authors: Ya-Xia
authors: YX
authors: Yin
authors: CAS Key Laboratory of Molecular Nanostructure&Nanotechnology and, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.
authors: Yi-Ming
authors: YM
authors: Kong
authors: CAS Key Laboratory of Molecular Nanostructure&Nanotechnology and, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China. ygguo@iccas.ac.cn.|University of Chinese Academy of Sciences, Beijing, 100190, P. R. China. ygguo@iccas.ac.cn.
authors: Yu-Guo
authors: YG
authors: Guo
authors: CAS Key Laboratory of Molecular Nanostructure&Nanotechnology and, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China.
authors: Li-Jun
authors: LJ
authors: Wan
keywords: Coulombic efficiency; Si/C; anodes; lithium-ion batteries; nano/micro-structures