Self: Diff for "Graphene Micro-Supercapacitors"

Graphene Micro-Supercapacitors

Project Overview

Relevant Publications

• Scalable fabrication of high-power graphene micro-supercapacitors for flexible and on-chip energy storage

  • Maher F. El-Kady & Richard B. Kaner

    • El-Kady and Kaner demonstrate a scalable fabrication of graphene micro-supercapacitors over large areas by direct laser writing on graphite oxide films. More than 100 micro-supercapacitors can be produced on a single disc in 30 min or less. The devices are built on flexible substrates for flexible electronics and on-chip uses. Remarkably, miniaturizing the devices to the microscale results in enhanced charge-storage capacity and rate capability. These microsupercapacitors demonstrate a power density of ~200 W cm^-3, which is among the highest values achieved for any supercapacitor.

  Preparation of Graphitic Oxide

  • William S. Hummers & Richard E. Offema

    • The conventional method for the preparation of graphitic oxide is time consuming and hazardous. Hummers and Offema have developed a rapid, relatively safe method for preparing graphitic oxide from graphite in what is essentially an anhydrous mixture of sulfuric acid, sodium nitrate and potassium permanganate.

  Layer-by-Layer Assembly of Ultrathin Composite Films from Micron-Sized Graphite Oxide Sheets and Polycations

  • Nina I. Kovtyukhova et al.
    • For the synthesis of graphitic oxide, El-Kady and Kaner used a modified Hummers' method developed by Nina I. Kovtyukhova et al.