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Silicon and Carbon Nanocomposite Spheres with Enhanced Electrochemical Performance for Full Cell Lithium Ion Batteries.

ABSTRACT: Herein, facile synthesis of monodisperse silicon and carbon nanocomposite spheres (MSNSs) is achieved via a simple and scalable surface-protected magnesiothermic reduction with subsequent chemical vapor deposition (CVD) process. Li-ion batteries (LIBs) were fabricated to test the utility of MSNSs as an anode material. LIB anodes based on MSNSs demonstrate a high reversible capacity of 3207?mAh g-1, superior rate performance, and excellent cycling stability. Furthermore, the performance of full cell LIBs was evaluated by using MSNS anode and a LiCoO2 cathode with practical electrode loadings. The MSNS/LiCoO2 full cell demonstrates high gravimetric energy density in the order of 850?Wh L-1 with excellent cycling stability. This work shows a proof of concept of the use of monodisperse Si and C nanocomposite spheres toward practical lithium-ion battery applications.

SUBMITTER: Wang W 

PROVIDER: S-EPMC5359662 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Silicon and Carbon Nanocomposite Spheres with Enhanced Electrochemical Performance for Full Cell Lithium Ion Batteries.

Wang Wei W   Favors Zachary Z   Li Changling C   Liu Chueh C   Ye Rachel R   Fu Chengyin C   Bozhilov Krassimir K   Guo Juchen J   Ozkan Mihrimah M   Ozkan Cengiz S CS  

Scientific reports 20170321

Herein, facile synthesis of monodisperse silicon and carbon nanocomposite spheres (MSNSs) is achieved via a simple and scalable surface-protected magnesiothermic reduction with subsequent chemical vapor deposition (CVD) process. Li-ion batteries (LIBs) were fabricated to test the utility of MSNSs as an anode material. LIB anodes based on MSNSs demonstrate a high reversible capacity of 3207 mAh g<sup>-1</sup>, superior rate performance, and excellent cycling stability. Furthermore, the performanc  ...[more]

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