溶液稳定、高导电性波纹状石墨烯片.pdf

物理化学学报( Wuli Huaxue Xuebao)
October
Acta Phys.-Chim.Sin.2012,28(10)2465-2470
2465
[ Article」
doi:10.3866/PKU.WHXB201209103
www.whxb.pku.edu.cn
溶液稳定、高导电性波纹状石墨烯片
范承伟张新陈胜王海芳曹傲能
上海大学纳米化学与生物学研究所,上海200444
摘要:特殊的单原子层二维S碳结构给石墨烯带来众多独特的性能和潜在的应用.然而,单层石魁烯容易聚
集并会逐渐重新石墨化,这成为其应用的一个重要障得.本文报道了一种新策略来解决这个问题,即通过在石
烯表面引入sp碳纳米结构作为永久的波纹来阻止石墨烯的聚集和石墨化,并使之在溶液中易于分散和稳
定.和其他功能化方法不同,该方法没有引入杂原子,不破坏石墨烯的结构和功能.制得的石墨烯具有优异的导
电性能(~650008-m-)并具有较好的溶液稳定性
关键词:石墨烯;波纹;碳纳米笼;可膨胀石墨;导电性;溶液稳定性
中图分类号:O641
Solution-processable, Highly Conductive, Permanently
Rippled Graphene Sheets
FAN Cheng-wei ZHANG Xin CHEN Sheng WANG Hai-fang CAO Ao-neng
(Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, P RChin)
Abstract: The single atom thick sp carbon structure of graphene gives rise to its unique properties and
potential applications. However, one serious obstacle for its application is that graphene is prone to
aggregate in suspension and gradually stack into graphite. Here, we report a novel approach to solve this
problem. The basic idea is to introduce sp carbon nano-islands on the graphene sheets that act as
permanent ripples to prevent the stacking and graphitization of graphene and make it easy to re-suspend
Unlike most functionalization methods, this approach avoids the introduction of heteroatoms. Thus, it does
not deteriorate the structure and change the properties of graphene. The carbon-rippled graphene has a
remarkable electronic conductivity of-65000sm, and can be readily suspended in solvent
Key Words: Graphene; Ripple; Carbon nanocage; Expandable graphite Conductivity,
Solution stability
1 Introduction
is that graphene is prone to aggregate in suspension and gradu
Graphene was once regarded unable to exist. Recent experi-ally stacks back to graphite
ments and simulation suggest that it is the transient ripples in
Currently, most of the solution-processable graphene is the
three dimension that make the two dimensional(2D )graphene chemically converted graphene or reduced graphene oxide
stable. The peculiar D structure offers graphene many (GO). Graphene oxide(G)is soluble and can be pr
unique Properties and potential applications. s-s Many appllca-
duced cheaply and massively GO also has many potential ap-
tions of graphene require solution-processable graphene sheets plications, but it is electrically insulating and not suitable
of high quality in quantity:. However, one serious obstacle for many applications. Various methods have been developed
Received: July 23, 2012; Revised: September 10, 2012; Published on Web: September 10, 2012
Correspondingauthor.Email:anca(@shu.edu.cn;Tel:+86-21-66135277
The project was supported by the National Natural Science Foundation of China(2 1073117), National Key Basic Research Program of China(973)
(2009CB930200, 2011CB933402) and Shanghai Leading Academic Disciplines, China(S30109)
困家自然科学基金(21073172困家重点基础研究发展规划项目(973)(2009CB930200,2011CB933402)和上海市重点学科(S30109)资助
C Editorial office of Acta Physico-chimica Sinica