Abstract:Carbon-coated SiO (SiO-C), which is a high-capacity anode material, experiences a significant capacity drop in the initial charge-discharge cycles. In contrast, Li-doped SiO-C (Li-SiO-C), which has been recently developed, exhibits a significantly smaller capacity drop. To explain this difference, we performed a detailed investigation of the structures and phase changes associated with the charge-discharge cycling of these materials by comparing their Si structures and electronic states obtained from solid-sta… Show more
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