Direct reduction of graphene oxide films into highly conductive and flexible graphene films by hydrohalic acids

被引：1516

作者：

Pei, Songfeng ^{[1
]}

Zhao, Jinping ^{[1
]}

Du, Jinhong ^{[1
]}

Ren, Wencai ^{[1
]}

Cheng, Hui-Ming ^{[1
]}

机构：

[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

CARBON | 2010年 / 48卷 / 15期

基金：

中国国家自然科学基金;

关键词：

GRAPHITE OXIDE; CHARGE-TRANSFER; CARBON; TRANSPARENT; ROUTE;

D O I：

10.1016/j.carbon.2010.08.006

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：

We report a simple but highly-effective hydrohalic acid reducing method to reduce graphene oxide (GO) films into highly conductive graphene films without destroying their integrity and flexibility at low temperature based on the nucleophilic substitution reaction. GO films reduced for 1 h at 100 degrees C in 55% hydroiodic (HI) acid have an electrical conductivity as high as 298 S/cm and a C/O ratio above 12, both of which are much higher than films reduced by other chemical methods. The reduction maintains good integrity and flexibility, and even improves the strength and ductility, of the original GO films. Based on this reducing method, a flexible graphene-based transparent conductive film with a sheet resistance of 1.6 k Omega/sq and 85% transparency was obtained, further verifying the advantage of HI acid reduction. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：4466 / 4474

页数：9

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