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Si nanomaterials in lithium-ion battery anode
- 1 Northwestern Polytechnical University
* Author to whom correspondence should be addressed.
Abstract
Due to its high specific capacity, silicon anode has gained interest on a global scale as the anode of next-generation lithium-ion batteries (LIBs). However, it is challenging for silicon anodes to replace graphite anodes for widespread use due to the inevitable volume expansion and SEI film development generated by silicon during the lithiation/delithiation process. Among these, the advancement of nanotechnology has sped up the development of silicon anodes. This paper reviews nanotechnology applied in the Si anode to improve the battery performance. The volume expansion of Si is effectively decreased by reducing the volume of the silicon anode in order to increase its specific surface area. Additionally, the smaller negative electrode reduces the distance traveled by lithium ions, greatly increasing the silicon negative electrode's efficiency. At present, the main silicon nano-anode materials include nanoparticles, nanowires, nanosheets, nanotubes, nanoporous materials and so on. It is hoped that this review will provide a deep prospect introduction to the nano-silicon anode. Pure silicon nanoparticles and silicon nanowires, and new nanomaterials composed of them with graphite, graphene, metals, etc.
Keywords
lithium-ion battery, silicon nanoparticle-based anode, silicon nanowire-based anode
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Cite this article
Han,R. (2023). Si nanomaterials in lithium-ion battery anode. Applied and Computational Engineering,26,62-72.
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Volume title: Proceedings of the 2023 International Conference on Functional Materials and Civil Engineering
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