储能科学与技术 ›› 2023, Vol. 12 ›› Issue (9): 2746-2751.doi: 10.19799/j.cnki.2095-4239.2023.0210

• 储能材料与器件 • 上一篇    下一篇

锡基三维石墨烯泡沫调控及其锂电池负极性能

江婉薇1,2(), 梁呈景1, 钱历1, 刘梅城1,2, 朱孟想1, 马骏1,3   

  1. 1.江苏工程职业技术学院
    2.江苏省先进纺织技术中心,江苏 南通 226001
    3.南京大学南通材料工程技术研究院,江苏 南通 226019
  • 收稿日期:2023-04-06 修回日期:2023-05-29 出版日期:2023-09-05 发布日期:2023-09-16
  • 通讯作者: 江婉薇 E-mail:jww199112@163.com
  • 作者简介:江婉薇(1991—),女,博士,讲师,主要研究方向为新能源材料,E-mail:jww199112@163.com
  • 基金资助:
    江苏省高校科研基金项目(22KJD540001);南通市科技项目(JC12022089);江苏工程职业技术学院重大项目(GYKY/2021/4);江苏省先进纺织工程中心项目(XJFZ/2021/18)

Regulating tin-based three-dimensional graphene foam and its performance as a lithium-ion battery anode

Wanwei JIANG1,2(), Chengjing LIANG1, Li QIAN1, Meicheng LIU1,2, Mengxiang ZHU1, Jun MA1,3   

  1. 1.Jiangsu College of Engineering and Technology
    2.Jiangsu Advanced Textile Engineering Technology Center, Nantong 226001, Jiangsu, China
    3.Nantong Institute of Materials Engineering Technology, Nanjing University, Nantong 226019, Jiangsu, China
  • Received:2023-04-06 Revised:2023-05-29 Online:2023-09-05 Published:2023-09-16
  • Contact: Wanwei JIANG E-mail:jww199112@163.com

摘要:

本工作通过酚醛树脂原位聚合反应,将石墨烯片锚定成具有三维泡沫形貌的多孔材料,并对其进行结构优化,研究了其碳化后及掺锡碳化后泡沫的储锂性能。借助扫描电镜(SEM)、X射线衍射(XRD),对其做形貌结构表征,考察了两种酚醛树脂用量对三维石墨烯泡沫形貌的影响及优化后掺锡的电化学性能。结果表明:在石墨烯用量相同的情况下,间苯二酚和戊二醛分别使用0.1和0.2 g时能得到形貌最佳的三维石墨烯泡沫,其碳化后具有较高的比容量和循环稳定性能。掺入二氧化锡后,充放电比容量进一步得到提升,经过100圈循环后,充放电比容量仍保持360 mAh/g。

关键词: 酚醛树脂, 石墨烯, 二氧化锡, 负极材料, 锂离子电池

Abstract:

The graphene sheets were anchored into three-dimensional porous foam materials with the in situ polymerization of phenolic resin, and their structures were optimized. Then, after the carbonization and doping tin dioxide, their lithium storage properties were studied. The morphology and crystal structure were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The influence of different phenolic resin dosages on the morphology of three-dimensional graphene foam and tin dioxide-doped samples was studied. The results showed that when 0.1 g resorcinol and 0.2 g glutaraldehyde were used, the three-dimensional graphene foam with the best morphology could be obtained with high specific capacity and cyclic stability after carbonization. After doping tin dioxide, the charge-discharge specific capacity was further improved, and the charge-discharge specific capacity reached 360 mAh/g over 100 cycles.

Key words: phenolic resin, graphene, tin dioxide, anode, lithium-ion battery

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