title: Hollow Structured Silicon Anodes with Stabilized Solid Electrolyte Interphase Film for Lithium-Ion Batteries.
abstract: Silicon has been considered as a promising anode material for the next generation of lithium-ion batteries due to its high specific capacity. Its huge volume expansion during the alloying reaction with lithium spoils the stability of the interface between electrode and electrolyte, resulting in capacity degradation. Herein, we synthesized a novel hollow structured silicon material with interior space for accumulating the volume change during the lithiation. The as-prepared material shows excellent cycling stability, with a reversible capacity of ∼1650 m Ah g(-1) after 100 cycles, corresponding to 92% retention. The electrochemical impedance spectroscopy and differential scanning calorimetry were carried out to monitor the growth of SEI film, and the results confirm the stable solid electrolyte interphase film on the surface of hollow structured silicon.
authors.affiliation: Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, China.
authors.forename: Qiuliang
authors.initials: Q
authors.lastname: Lv
authors.affiliation: Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, China.
authors.forename: Tianyi
authors.initials: T
authors.lastname: Ma
authors.affiliation: Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, China.
authors.forename: Wentao
authors.initials: W
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing 100084, China.
authors.forename: Xinping
authors.initials: X
authors.lastname: Qiu
keywords: Coulombic efficiency; anode; interface stability; lithium-ion battery; silicon