研究了针状焦、沥青焦原料的物化性质对其石墨化样品的微结构及其用作锂离子电池负极材料电极性能的影响机制.研究结果表明:(1)因针状焦在制备过程中存在沥青的净化以及中间相的形成、融并和有序排列过程,导致在相同石墨化条件下,针状焦比沥青焦更易于石墨化;(2)经2800℃石墨化处理后,针状焦的(d002、La、Lc值分别为0.3373nm、56.05nm、27.11nm,而石墨化沥青焦的La、Lc仅为石墨化针状焦的53.4%;(3)石墨化针状焦经反复充放电40次后,其嵌锂容量能稳定在301mAh/g,而石墨化沥青焦却只有240mAh/g.
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