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ACS Appl Mater Interfaces. 2016 Jul 6;8(26):16862-8. doi: 10.1021/acsami.6b04448. Epub 2016 Jun 23.

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

Author information

1
School of Metallurgy and Environment, Central South University , Changsha 410083, China.
2
Department of Mechanical and Engineering, The Hong Kong Polytechnic University , Hong Kong, China.

Abstract

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.

KEYWORDS:

anodes; local heat accumulation; magnesiothermic reduction; molybdenum disilicide; silicon

PMID:
27300698
DOI:
10.1021/acsami.6b04448

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