多孔石墨烯/碳基材料制备及其高性能锂离子电池研究
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- 英文论文题名：Preparation of porous graphene/carbon architectures towards high-performance lithium ion batteries
- 论文作者：王春栋
- 英文论文作者：Chundong Wang ; School of Optical and Electronic Information ; Huazhong University of Science and Technology
- 年：2016
- 作者机构：华中科技大学;
- 论文关键词：锂离子电池 ; 甘蔗 ; 多孔 ; 石墨烯 ; 石墨烯纳米带
- 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-第三十分会：化学电源
- 语种：中文
- 分类号：TQ127.11;TM912
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十分会 ; 化学电源
- 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：339k
- 原文格式：D
- 会议级别：全国
摘要
锂离子电池被认为是目前化学能源存储最新技术之一,也是当前手机,手提电脑及移动电子设备不可或缺的供电模块。本文首先介绍一种利用火焰法快速、高效制备高空隙率石墨烯泡沫法。与传统石墨烯基电极相比,其比容量可提高2-3倍以上。其次我们将报道最新发现的一种可大规模工业化生产应用的可再生碳能源。通过锻烧除糖处理过的回收的甘蔗渣废料可以获得高比表面的多孔碳。由于其多空隙率特点,非常适合锂离子电池应用,100 mAh g~(-1)电流密度下其比容量能达311 mA h g~(-1)。最后我们将介绍一种轴向剪切碳纳米管"手术技术",产率为100%的可大规模生产的石墨烯纳米带制备方法。电化学测试结果表明石墨烯纳米带边缘及其表面官能团(即含氧基团,羟基,羰基)是导致其高离子存储性能的主要原因。
Herein,a facile production of highly porous graphene foam will be reported by using flame treated graphene oxide(FR-GO).Compared with chemically reduced GO(CR-GO),FR-GO delivers much higher specific capacity(more than two times high).Meanwhile,we will also introduce a novel strategy to collect microporous carbon from disposable sugarcane waste for lithium ion battery(LIB) applications,delivering a specific capacity of 311 mA h g~(-1) at 100 mAh g~(-1).This approach opens a convenient route for mass-producing sustainable,superior LIB electrodes from natural wastes that can substitute commercial graphite.Finally,we also would like to introduce an effective,large-scale synthesis strategy for producing graphene nanoribbons(GNRs) with a nearly 100%yield has been proposed using a stepwise,solution-based,lengthwise unzipping carbon nanotube(CNT) method.The electrochemical measurements inform us that the functional groups in GNRs could be the effective contributor for the high-performance Li-ion batteries with appropriate adjustment.
Herein,a facile production of highly porous graphene foam will be reported by using flame treated graphene oxide(FR-GO).Compared with chemically reduced GO(CR-GO),FR-GO delivers much higher specific capacity(more than two times high).Meanwhile,we will also introduce a novel strategy to collect microporous carbon from disposable sugarcane waste for lithium ion battery(LIB) applications,delivering a specific capacity of 311 mA h g~(-1) at 100 mAh g~(-1).This approach opens a convenient route for mass-producing sustainable,superior LIB electrodes from natural wastes that can substitute commercial graphite.Finally,we also would like to introduce an effective,large-scale synthesis strategy for producing graphene nanoribbons(GNRs) with a nearly 100%yield has been proposed using a stepwise,solution-based,lengthwise unzipping carbon nanotube(CNT) method.The electrochemical measurements inform us that the functional groups in GNRs could be the effective contributor for the high-performance Li-ion batteries with appropriate adjustment.
引文
[1]Wang,C.D.;Lan,M.H.;Zhang,Y.;Bian,H.D.;Yuen,M.K.;Ostrikov,K.;Jiang,J.J.;Zhang,W.J.;Li,Y.Y.;Lu,J.Green Chem.2016,DOI:10.1039/C5GC02938D.
[2]Wang,C.D.;Li,Y.S.;Jiang,J.J.;Chiang,W.-H.ACS Appl.Mater.Interf.,2015,7:17441.
[3]Jiang,H.B.;Zhang,Y.L.;Zhang,Y.;Liu,Y;Fu,X.Y.;Liu,Y.Q.;Wang,CD.;Sun,H.B.Sci Rep 2015,5:17522.
[2]Wang,C.D.;Li,Y.S.;Jiang,J.J.;Chiang,W.-H.ACS Appl.Mater.Interf.,2015,7:17441.
[3]Jiang,H.B.;Zhang,Y.L.;Zhang,Y.;Liu,Y;Fu,X.Y.;Liu,Y.Q.;Wang,CD.;Sun,H.B.Sci Rep 2015,5:17522.