Enhanced Electrochemical Performance of Heterogeneous Si/MoSi2 Anodes Prepared by a Magnesiothermic Reduction

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• 作者：Lili Wu ; Juan Yang ; Xiangyang Zhou ; Jingjing Tang ; Yongpeng Ren ; Yang Nie
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：July 6, 2016
• 年：2016
• 卷：8
• 期：26
• 页码：16862-16868
• 全文大小：537K
• 年卷期：0
• ISSN：1944-8252

文摘

This work explores facile synthesis of heterogeneous Si/MoSi₂ nanocomposites via a one-step magnesiothermic reduction. MoSi₂ serves as a highly electrically conductive nanoparticle that has several advantages of electrochemical properties, which is formed through the absorption of local heat accumulation generated by magnesiothermic reduction. As a result, the Si/MoSi₂ nanocomposites exhibit excellent electrochemical performance, showing initial charge capacity of 1933.9 mA h g^–1 at a rate of 0.2 C and retaining 85.2% after 150 cycles. This work using local heat accumulation generated by magnesiothermic reduction demonstrates a large-scale method for producing high-performance Si-based anode materials, which could provide referential significances for other materials.