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Preparation of SiOx Anode with Improved Performance Through Reducing Oxygen Content, Controlling SiO2 Crystallization, and Carbon-Coating

Journal of Solid State Electrochemistry(2025)

Tianjin International Engineering Institute

Cited 0|Views5
Abstract
Silicon suboxide (SiOx) is a promising anode material for application in lithium-ion batteries (LIBs). However, the poor initial Coulombic efficiency (ICE) limits its full application potential as a high-capacity anode material. Herein, we demonstrate a scalable approach for improving the ICE of SiOx while achieving high capacity. By reducing the oxygen content in silicon monoxide (SiO), controlling the crystallization of SiO2 in SiOx, and combining with carbon coating, the prepared SiOx–Li6@C anode displays a high specific capacity of 2170.44 mAh g−1 and an ICE up to 90.32
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Key words
Silicon suboxide,Magnesiothermic reduction,Carbon,Initial Coulombic efficiency
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