张亚婷,索轲,刘国阳,朱由余,张娜娜

• 1:西安科技大学化学与化工学院
• 2:自然资源部煤炭资源勘查与综合利用重点实验室

摘要(Abstract)：

为了改善Fe_3O_4作为锂离子电池负极材料时循环稳定性差的问题，以铁基沸石咪唑酯框架结构材料(Fe-ZIF)为前驱体，使用多巴胺通过聚合反应与其复合，再与石墨烯通过静电吸附作用组装，经过煅烧碳化，制备了Fe_3O_4@NC/G复合材料。研究结果表明，多巴胺与石墨烯的引入有效提高了Fe_3O_4在充放电过程中的电化学稳定性。在0.1 A·g~(-1)电流密度下，充放电循环30圈，Fe_3O_4@NC/G的放电比容量为1005.6 mAh·g~(-1)。当电流密度为2 A·g~(-1)时，经过300圈循环，其放电比容量仍有838.3 mAh·g~(-1)。Fe_3O_4@NC/G复合材料优异的电化学性能归因于独特的结构设计，这对其他负极材料的构筑提供了一定的参考价值。

关键词(KeyWords)： 锂离子电池;负极材料;Fe_3O_4;石墨烯

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1810113,U1203292)

作者(Author): 张亚婷,索轲,刘国阳,朱由余,张娜娜

DOI: 10.14106/j.cnki.1001-2028.2023.0141

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