Direct gas phase synthesis of amorphous Si/C nanoparticles as anode material for lithium ion battery
Direct gas phase synthesis of amorphous Si/C nanoparticles as anode material for lithium ion battery
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DOI：
10.1016/j.jallcom.2021.159315
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发表时间：
2021-03-18
影响因子：
6.2
通讯作者：
Lyubina, Julia
中科院分区：
文献类型：
--
作者：
Orthner, Hans;Wiggers, Hartmut;Lyubina, Julia
高比容量硅作为锂离子电池的负极材料具有很大的吸引力。然而，硅的实施是具有挑战性的，因为其在锂化时的大体积膨胀导致固体电解质界面的粉碎和积聚。硅合金的纳米结构化和设计是规避这些挑战的有前途的策略。在这里，我们展示了一种工业上可扩展的气相合成方法，使用硅烷和乙烯的热分解来生产具有增强的电化学性能的新型非晶硅/碳基颗粒。讨论了高性能硅/碳基材料设计的基本原理和动力学考虑。(C)2021爱思唯尔有限公司版权所有。
High specific capacity of silicon is very attractive for its application as anode material in lithium ion batteries. However, the implementation of silicon is challenging due to its large volume expansion on lithiation leading to pulverization and buildup of a solid-electrolyte interphase. Nanostructuring and design of silicon alloys are a promising strategy to circumvent these challenges. Here we demonstrate an industrially scalable gas phase synthesis method using thermal decomposition of silane and ethylene to produce novel amorphous silicon/carbon-based particles with enhanced electrochemical performance. Fundamental principles and kinetics considerations for the design of high-performance silicon/carbon-based materials are discussed. (C) 2021 Elsevier B.V. All rights reserved.