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>Silicon and Carbon Nanocomposite Spheres with Enhanced Electrochemical Performance for Full Cell Lithium Ion Batteries
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Silicon and Carbon Nanocomposite Spheres with Enhanced Electrochemical Performance for Full Cell Lithium Ion Batteries
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.
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机译：本文中，通过简单且可扩展的表面保护的镁热还原反应以及随后的化学气相沉积（CVD）工艺，可以轻松合成单分散硅和碳纳米复合球（MSNS）。制造锂离子电池（LIB）来测试MSNS作为阳极材料的实用性。基于MSNS的LIB阳极具有3207 mAh g -1 的高可逆容量，优异的倍率性能和出色的循环稳定性。此外，通过使用具有实际电极负载的MSNS阳极和LiCoO2阴极评估了全电池LIB的性能。 MSNS / LiCoO2全电池显示出约850 Wh L -1 的高重量能密度，并具有出色的循环稳定性。这项工作表明了将单分散Si和C纳米复合球用于实际锂离子电池应用的概念证明。
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