讨论了两种具有形貌代表性的导电添加剂:球形的炭黑(SP)和纤维状的气相生长炭纤维(VGCF)对锂离子电池性能的影响.结果表明,使用SP作为导电剂的电池容量高于使用VGCF的电池,SP可有效地协助锂离子电池容量性能的发挥.同时,前者在较高电流放电条件下的倍率性能也明显优于后者.当分别将50％质量分数的两种添加剂组成复合导电剂时,在相同添加量条件下,所得复合导电剂的性能优于单独使用的炭黑导电剂,电池表现出更高容量性能和更好的倍率性能.这是由于SP和VGCF不同的形貌结构使两种导电添加剂表现出了良好的协同效应,从而使电池性能获得进一步提高.使用更高容量的商用化10Ah和50Ah电池进一步验证以上结论.
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