采用3,4,9,10-二萘嵌苯四酸二酐(PTCTA)为原料,经高温自由基聚合、气相沉积、脱氢、石墨化工艺制得锂离子电池用聚萘(PPN)负极材料.通过X射线衍射、扫描电子显微镜、激光显微拉曼光谱等检测技术对PPN负极材料的结构和表面形貌进行了分析与表征,研究了PPN作为锂离子电池负极材料的电化学行为.结果表明,PPN负极材料具有类似石墨的多片层结构,电化学测试表明,PPN负极材料具有良好的循环稳定性和倍率性能;在50 mA/g电流密度下,PPN负极材料首次放电比容量为368.4 mAh/g,经过200圈循环之后,PPN负极材料的放电比容量仍保持在300.3mAh/g.结果显示PPN适用于做锂离子电池负极材料.
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