Hydroxylated graphene-based flexible carbon film with ultrahigh electrical and thermal conductivity

被引：23

作者：

Ding, Jiheng ^{[1
]}

Rahman, Obaid Ur ^{[1
]}

Zhao, Hongran ^{[1
]}

Peng, Wanjun ^{[1
]}

Dou, Huimin ^{[1
]}

Chen, Hao ^{[1
]}

Yu, Haibin ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Protect Technol Zhejiang Pro, Key Lab Marine Mat & Related Technol, Ningbo 315201, Zhejiang, Peoples R China

来源：

NANOTECHNOLOGY | 2017年 / 28卷 / 39期

关键词：

graphene; exfoliation; molten hydroxides; electrical and thermal conductivities; flexible carbon film; LIQUID-PHASE EXFOLIATION; BORON-NITRIDE NANOSHEETS; SINGLE-LAYER GRAPHENE; AQUEOUS DISPERSIONS; HEAT SPREADER; SURFACTANT; SUSPENSIONS; GRAPHITE; POLYELECTROLYTE; NANOTUBES;

D O I：

10.1088/1361-6528/aa8158

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Graphene-based films are widely used in the electronics industry. Here, surface hydroxylated graphene sheets (HGS) have been synthesized from natural graphite (NG) by a rapid and efficient molten hydroxide-assisted exfoliation technique. This method enables preparation of aqueous dispersible graphene sheets with a high dispersed concentration (similar to 10.0 mg ml(-1)) and an extraordinary production yield (similar to 100%). The HGS dispersion was processed into graphene flexible film (HGCF) through fast filtration, annealing treatment and mechanical compression. The HGS endows graphene flexible film with a high electrical conductivity of 11.5. x. 10(4)Sm(-1) and a superior thermal conductivity of 1842W m(-1) K-1. Simultaneously, the superflexible HGCF could endure 3000 repeated cycles of bending or folding. As a result, this graphene flexible film is expected to be integrated into electronic packaging and high-power electronics applications.

引用

页数：9

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