Multi layered Nano-Architecture of Variable Sized Graphene Nanosheets for Enhanced Supercapacitor Electrode Performance

被引：121

作者：

Biswas, Sanjib

Drzal, Lawrence T. ^{[1
]}

机构：

[1] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2010年 / 2卷 / 08期

基金：

美国国家科学基金会;

关键词：

highly aromatic graphene; electronic properties; electrochemical capacitors; binder-free electrode; multilayer free-standing film; aligned nanostructure; CARBON NANOTUBES; RAMAN-SPECTROSCOPY; GRAPHITE OXIDE;

D O I：

10.1021/am100343a

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The diverse physical and chemical aspects of graphene nanosheets such as particle size surface area and edge chemistry were combined to fabricate a new supercapacitor electrode architecture consisting of a highly aligned network of large-sized nanosheets as a series of current collectors within a multilayer configuration of bulk electrode. Capillary driven self-assembly of monolayers of graphene nanosheets was employed to create a flexible, multilayer, free-standing film of highly hydrophobic nanosheets over large macroscopic areas. This nanoarchitecture exhibits a high-frequency capacitative response and a nearly rectangular cyclic voltammogram at 1000 mV/s scanning rate and possesses a rapid current response, small equivalent series resistance (ESR), and fast ionic diffusion for high-power electrical double-layer capacitor (EDLC) application.

引用

页码：2293 / 2300

页数：8