碳点/还原氧化石墨烯复合物的制备及其电化学性能研究
详细信息 查看官网全文
- 英文论文题名：Electrochemical Capacitive Properties of Supercapacitors Based on Carbon dots/Reduced Graphene Oxide
- 论文作者：张亚婷 ; 任绍昭 ; 蔡江涛 ; 刘国阳 ; 党永强 ; 缪文超
- 英文论文作者：Yating Zhang ; Shaozhao Ren ; Jiangtao Cai ; Guoyang Liu ; Yongqiang Dang ; Wenchao Miao ; College of Chemistry & Chemical Engineering ; Xi'an University of Science and Technology
- 年：2016
- 作者机构：西安科技大学化学与化工学院;
- 论文关键词：碳点 ; 还原氧化石墨烯 ; 超级电容器 ; 比电容
- 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：TQ127.11;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：198k
- 原文格式：D
- 会议级别：全国
摘要
石墨烯基复合电极材料由于其高电子迁移率以及巨大的比表面积~([1-3]),在超级电容器的应用中具有巨大的潜力。本文采用水浴加热将氨基功能化碳点(CDs)通过C-N共价键固定在氧化石墨片表面和边缘上,然后经氢等离子还原得到碳点/还原氧化石墨烯复合物(CDs/rGO);进而通过恒电流充放电以及循环伏安测试等手段对材料的电容性能进行研究。结果表明:在一定范围内增加CDs有助于提高CDs/r GO复合材料的电容性能,其中CDs质量比为50%的样品50-CDs/rGO在1 mol/L H_2SO_4电解液中展现出良好的电化学可逆性和较高的比电容(211.9F/g),充放电循环1000次以后的电容保持率为92.8%。
Graphene-based composite electrode materials have been attracting more and more interest in application of supercapacitor due to their high electron mobility and large specific surface area~([1-3]). In this paper, a new graphene-based electrode material for supercapacitors is reported. The carbon dots/reduced graphene oxide(CDs/rGO) composites were fabricated by water bath combining with the hydrogen plasma reduction and the carbon dots(CDs) were anchored on the graphene oxide(GO) through covalent bond. Furthermore, its capacitive properties in aqueous electrolyte were studied by galvanostatic charge-discharge(GQD) and cyclic voltammetry(CV) tests. The results showed that the capacitance of rGO increased when adding the CDs the 50-CDs/rGO exhibited good reversibility and high specific capacitance(211.9 F/g) in 1M H_2SO_4 aqueous electrolyte and the specific capacitance of 50-CDs/rGO retains 92.8% of its original values after 1000 cycles.
Graphene-based composite electrode materials have been attracting more and more interest in application of supercapacitor due to their high electron mobility and large specific surface area~([1-3]). In this paper, a new graphene-based electrode material for supercapacitors is reported. The carbon dots/reduced graphene oxide(CDs/rGO) composites were fabricated by water bath combining with the hydrogen plasma reduction and the carbon dots(CDs) were anchored on the graphene oxide(GO) through covalent bond. Furthermore, its capacitive properties in aqueous electrolyte were studied by galvanostatic charge-discharge(GQD) and cyclic voltammetry(CV) tests. The results showed that the capacitance of rGO increased when adding the CDs the 50-CDs/rGO exhibited good reversibility and high specific capacitance(211.9 F/g) in 1M H_2SO_4 aqueous electrolyte and the specific capacitance of 50-CDs/rGO retains 92.8% of its original values after 1000 cycles.
引文
[1]R Thomas W,Amir Y.Nature Nanotechnology,2010,5(10):699-700
[2]Cerf A,Alava T,Barton R A.Nano Letters,2011,11(11):4232-8.
[3]Ali A,Ali K,Kwon K R.Journal of Materials Science Materials in Electronics,2013,25(25):1-8.
[2]Cerf A,Alava T,Barton R A.Nano Letters,2011,11(11):4232-8.
[3]Ali A,Ali K,Kwon K R.Journal of Materials Science Materials in Electronics,2013,25(25):1-8.