Highly efficient electrolytic exfoliation of graphite into graphene sheets based on Li ions intercalation-expansion-microexplosion mechanism

被引：102

作者：

Huang, Hui ^{[1
]}

Xia, Yang ^{[1
]}

Tao, Xinyong ^{[1
]}

Du, Jun ^{[1
]}

Fang, Junwu ^{[1
]}

Gan, Yongping ^{[1
]}

Zhang, Wenkui ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Chem Engn & Mat Sci, Hangzhou 310014, Zhejiang, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 21期

基金：

中国国家自然科学基金;

关键词：

CARBON NANOTUBES; OXIDE; NANOPARTICLES; FABRICATION; ELECTRODES; NANOSHEETS; REDUCTION; SALTS; FILMS;

D O I：

10.1039/c2jm00092j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this communication, we report a facile and novel molten salt electrolysis method to prepare high-quality graphene sheets. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) confirmed that the final products exfoliated from the electrolysis of graphite cathode in the molten LiOH medium are mainly graphene sheets (approx. 80 wt% conversion efficiency). Raman spectroscopy revealed that the as-formed graphene sheets have significantly low density of defects. Based on these observations, the exfoliation mechanism of graphite cathode into graphene sheets through lithium intercalation-expansion-microexplosion processes was proposed. The discovery of a molten salt electrolysis method presents us with the possibility for large scale and continuous production of graphene.

引用

页码：10452 / 10456

页数：5

共 39 条

[1] Preparation of Novel 3D Graphene Networks for Supercapacitor Applications [J].

Cao, Xiehong ;

Shi, Yumeng ;

Shi, Wenhui ;

Lu, Gang ;

Huang, Xiao ;

Yan, Qingyu ;

Zhang, Qichun ;

Zhang, Hua .

SMALL, 2011, 7 (22) :3163-3168

[2] Electrolytic conversion of graphite to carbon nanotubes in fused salts [J].

Chen, GZ ;

Fan, XD ;

Luget, A ;

Shaffer, MSP ;

Fray, DJ ;

Windle, AH .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 446 (1-2) :1-6

[3] Substrate-free gas-phase synthesis of graphene sheets [J].

Dato, Albert ;

Radmilovic, Velimir ;

Lee, Zonghoon ;

Phillips, Jonathan ;

Frenklach, Michael .

NANO LETTERS, 2008, 8 (07) :2012-2016

[4] Versatile Catalytic System for the Large-Scale and Controlled Synthesis of Single-Wall, Double-Wall, Multi-Wall, and Graphene Carbon Nanostructures [J].

Dervishi, Enkeleda ;

Li, Zhongrui ;

Watanabe, Fumiya ;

Courte, Aurelie ;

Biswas, Abhijit ;

Biris, Alexandru R. ;

Saini, Viney ;

Xu, Yang ;

Biris, Alexandru S. .

CHEMISTRY OF MATERIALS, 2009, 21 (22) :5491-5498

[5] Practical Chemical Sensors from Chemically Derived Graphene [J].

Fowler, Jesse D. ;

Allen, Matthew J. ;

Tung, Vincent C. ;

Yang, Yang ;

Kaner, Richard B. ;

Weiller, Bruce H. .

ACS NANO, 2009, 3 (02) :301-306

[6] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[7] Transparent, Flexible, All-Reduced Graphene Oxide Thin Film Transistors [J].

He, Qiyuan ;

Wu, Shixin ;

Gao, Shuang ;

Cao, Xiehong ;

Yin, Zongyou ;

Li, Hai ;

Chen, Peng ;

Zhang, Hua .

ACS NANO, 2011, 5 (06) :5038-5044

[8] Centimeter-Long and Large-Scale Micropatterns of Reduced Graphene Oxide Films: Fabrication and Sensing Applications [J].

He, Qiyuan ;

Sudibya, Herry Gunadi ;

Yin, Zongyou ;

Wu, Shixin ;

Li, Hai ;

Boey, Freddy ;

Huang, Wei ;

Chen, Peng ;

Zhang, Hua .

ACS NANO, 2010, 4 (06) :3201-3208

[9] CONDENSED-PHASE NANOTUBES [J].

HSU, WK ;

HARE, JP ;

TERRONES, M ;

KROTO, HW ;

WALTON, DRM ;

HARRIS, PJF .

NATURE, 1995, 377 (6551) :687-687

[10]

Huang H, 2003, CHIN J CHEM PHYS, V16, P131

← 1 2 3 4 →