高电容量CNTs/AC/NG复合材料的合成与电化学研究
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- 英文论文题名：Synthesis and electrochemistry of CNTs/AC/NG hybrid nanomaterials with high specific capacitance
- 论文作者：刘子昂 ; 陶玉溪 ; 谭振权
- 英文论文作者：Ziang Liu ; Yuxi Tao ; Zhenquan Tan ; School of Petroleum and Chemical Engineering ; Dalian University of Technology
- 年：2016
- 作者机构：大连理工大学石油与化学工程学院;
- 论文关键词：超级电容器 ; 比容量 ; 碳复合材料 ; 掺杂 ; 水热法
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十九分会：纳米碳材料
- 语种：中文
- 分类号：TB332;TM53
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十九分会 ; 纳米碳材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：270k
- 原文格式：D
- 会议级别：全国
摘要
比容量是衡量超级电容器电化学性能的一个重要指标,而如何提高电极材料的比容量则是目前电化学储能材料的一个研究热点。本研究利用水热法合成了一种具有高比容量的氮掺杂石墨烯-活性炭-碳纳米管三维结构的纳米介孔复合电极材料。由于在材料中引入了碳纳米管形成插层作用,从而大大减少了石墨烯在水热过程中的团聚,使得材料的比表面积可达655.3 m~2/g。另一方面,碳纳米管独特的管状结构为离子传输提供了通道,纳米活性炭增加了电极材料的堆积密度,而石墨烯、活性炭、碳纳米管之间又存在良好的协同作用,从而大大改善了材料的电化学性能。在KOH电解液中,0.5A/g的电流密度下,电极材料的比容量可以达到720 F/g。此纳米介孔复合材料具有合成方法简单、电化学性能优异等优点,有望应用于未来的超级电容器等绿色能源材料。
How to improve the specific capacitance of electrode materials is of great research interesting because it is a key factor for the electrochemical capacitors. Here we report a N-doped graphene/CNTs/AC mesoporous hybrid nanomaterial with three dimensional structure synthesized by hydrothermal method. This hybrid nanomaterial have a high specific area of 655.3 m~2/g, due to the mesopores structure made by CNTs which prevent the agglomeration of graphene. The specific capacitance of this materials reaches to 720 F/g at a current density of 0.5A/g in KOH, which dues to the path of ion transport supported by CNTs, the pecking density of electrode elevated by the active carbon, and also the synergistic effect among layered AC,CNTs and N-doped graphene. This mesoporous hybrid material is easily synthesized and has high electrochemical performance, which allow them to widely use in the supercapacitors and other green energy materials.
How to improve the specific capacitance of electrode materials is of great research interesting because it is a key factor for the electrochemical capacitors. Here we report a N-doped graphene/CNTs/AC mesoporous hybrid nanomaterial with three dimensional structure synthesized by hydrothermal method. This hybrid nanomaterial have a high specific area of 655.3 m~2/g, due to the mesopores structure made by CNTs which prevent the agglomeration of graphene. The specific capacitance of this materials reaches to 720 F/g at a current density of 0.5A/g in KOH, which dues to the path of ion transport supported by CNTs, the pecking density of electrode elevated by the active carbon, and also the synergistic effect among layered AC,CNTs and N-doped graphene. This mesoporous hybrid material is easily synthesized and has high electrochemical performance, which allow them to widely use in the supercapacitors and other green energy materials.
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