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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Scalable fabrication of high-power graphene micro-supercapacitors for flexible and on-chip energy storage
Nature Communications, Volume 4, Article 1475, Year 2013
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Description
The rapid development of miniaturized electronic devices has increased the demand for compact on-chip energy storage. Microscale supercapacitors have great potential to complement or replace batteries and electrolytic capacitors in a variety of applications. However, conventional micro-fabrication techniques have proven to be cumbersome in building cost-effective micro-devices, thus limiting their widespread application. Here we demonstrate a scalable fabrication of graphene micro-supercapacitors over large areas by direct laser writing on graphite oxide films using a standard LightScribe DVD burner. 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 that can be integrated with MEMS or CMOS in a single chip. Remarkably, miniaturizing the devices to the microscale results in enhanced charge-storage capacity and rate capability. These micro-supercapacitors demonstrate a power density of ∼200 W cm-3, which is among the highest values achieved for any supercapacitor. © 2013 Macmillan Publishers Limited.
Authors & Co-Authors
El-Kady, Maher F.
United States, Los Angeles
University of California, Los Angeles
Egypt, Giza
Faculty of Science
Kaner, Richard B.
United States, Los Angeles
University of California, Los Angeles
Statistics
Citations: 1,576
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1038/ncomms2446
e-ISSN:
20411723