硅因其具有极高的理论容量而成为现阶段锂离子电池用负极材料研究的热点.介绍了硅基负极材料嵌/脱锂的原理,总结了目前缓解硅开裂与粉碎的一般方法,分析了现行研究中的不足.聚吡咯具有高导电性、高弹性、多孔、高稳定性等优点,为了提高负极材料循环稳定性能,将其与硅结舍得到的Si-PPy复合材料将是最有希望的发展方向.
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