锂离子电池纳米硅碳负极材料研究进展

来源 :储能科学与技术 | 被引量 : 0次 | 上传用户:cjian024156
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高能量密度锂离子二次电池对于缓解能源和环境危机具有重要意义.硅基材料理论比容量远超石墨,是目前公认的下一代锂离子电池负极材料.中国科学院物理研究所自1999年在国际上首次报道纳米化对于硅负极性能提升的重要作用以来,持续对纳米硅基材料的基础科学问题以及产业化应用进行了大量探索,主要包括纳米硅基负极材料的脱嵌锂机理、结构及形貌的动态演变过程、应力积累与裂纹的产生和SEI的三维可视化研究等内容.本文将对这些工作的一些基础研究进行总结,并对今后负极材料的发展提出自己的见解.
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锂离子固体电解质是发展高安全性固态锂电池的关键材料,其性能与全电池的性能表现密切相关.离子电导率、电子电导率、化学窗口和对锂界面稳定性是锂离子固体电解质的基础电化