Stable Aqueous Dispersions of Noncovalently Functionalized Graphene from Graphite and their Multifunctional High-Performance Applications

被引：411

作者：

An, Xiaohong ^{[1
]}

Simmons, Trevor John ^{[2
]}

Shah, Rakesh ^{[3
]}

Wolfe, Christopher ^{[3
]}

Lewis, Kim M. ^{[1
]}

Washington, Morris ^{[1
]}

Nayak, Saroj K. ^{[1
]}

Talapatra, Saikat ^{[3
]}

Kar, Swastik ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA

[2] Rensselaer Polytech Inst, Dept Chem & Chem Biol, Troy, NY 12180 USA

[3] So Illinois Univ, Dept Phys, Carbondale, IL 62901 USA

来源：

NANO LETTERS | 2010年 / 10卷 / 11期

基金：

美国国家科学基金会;

关键词：

Graphene; pyrenecarboxylic acid; noncovalent functionalization; aqueous dispersion; supercapacitors/ultracapacitors; sensors; CARBON NANOTUBES; SINGLE-LAYER; EXFOLIATION; SENSORS;

D O I：

10.1021/nl903557p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present a scalable and facile technique for noncovalent functionalization of graphene with 1-pyrenecarboxylic acid that exfoliates single-, few-, and multilayered graphene flakes into stable aqueous dispersions. The exfoliation mechanism is established using stringent control experiments and detailed characterization steps. Using the exfoliated graphene, we demonstrate highly sensitive and selective conductometric sensors (whose resistance rapidly changes > 10 000% in saturated ethanol vapor), and ultracapacitors with extremely high specific capacitance (similar to 120 F/g), power density (similar to 105 kW/kg), and energy density (similar to 9.2 Wh/kg).

引用

页码：4295 / 4301

页数：7

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