选取聚丙烯腈和三聚氰胺为碳前驱体和氮前驱体，通过电纺丝和后续的炭化和水蒸气活化过程，制备了一种具有自支撑结构，无需任何导电剂和粘结剂，直接用作电极的用于锂离子电池负极的掺氮多孔炭纳米纤维布。结果表明，此多孔炭纳米纤维布具有无纺交联的纳米纤维形态、独特的微孔结构、较高的比容量(856 mAh·g-1)和较好的功率性能，是一种非常有使用前景的锂离子电池负极材料。
Nitrogen-doped porous carbon nanofiber webs ( NPCNFs) were prepared from mixtures of polyacrylonitrile and mela-mine byelectrospinning, followed by oxidative stabilization, carbonization and steam activation. The NPCNFs are free-standing,ex-hibit an interconnected non-woven nanofibrous morphology and a well-developed microporous structure, and can be used directly as anodes for lithium ion batteries without adding binder or conductive filler. The NPCNF from the mixture with a melamine/polyacry-lonitrile mass ratio of 1∶3 has a high specific capacity of 856 mAh·g-1 and a satisfactory rate capability. These intriguing characteris-tics make the NPCNFs promising anode candidates for high-performance lithium ion batteries.
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