硅基材料具有极高的储锂容量和较低的电压平台,被认为是最具潜力的下一代锂离子电池负极材料之一。然而,硅的首次不可逆容量较大,电极循环稳定性较差,限制了其商业化应用。基于目前研究现状及硅基材料存在的问题,从不同硅源的选择、硅碳复合材料的制备,以及预嵌锂技术的应用等方面对硅材料近年来的相关研究工作进行了综述。
Silicon is one of the most attractive cathode material for lithium ion batteries due to extremely high theoretical capacity and its low discharge potential.However,the large initial irreversible capacity and the poor cycle stability hinder its commercial applications.Based on recent advances and the problems of silicon-based materials,the research on selecting silicon source,preparing silicon/carbon composites and utilizing prelithiation technology were summarized.
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基金资助
国家自然科学基金项目资助(51602046);中央高校基本科研业务费专项基金资助(2572018BC30);东北林业大学生创新项目资助(201810225469)
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