Abstract

A preheated high-temperature environment is believed to be critical for a chemical-exfoliation-based production of graphenes starting from graphite oxide, a belief that is based on not only experimental but also theoretical viewpoints. A novel exfoliation approach is reported in this study, and the exfoliation process is realized at a very low temperature, which is far below the proposed critical exfoliation temperature, by introducing a high vacuum to the exfoliation process. Owing to unique surface chemistry, low-temperature exfoliated graphenes demonstrate an excellent energy storage performance, and the electrochemical capacitance is much higher than that of the high-temperature exfoliated ones. The low-temperature exfoliation approach presents us with a possibility for a mass production of graphenes at low cost and great potentials in energy storage applications of graphene-based materials.

Keywords

Exfoliation jointGrapheneMaterials scienceEnergy storageNanotechnologyGraphiteOxideGraphite oxideElectrochemistryChemical engineeringComposite materialChemistryMetallurgyElectrode

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Publication Info

Year
2009
Type
article
Volume
3
Issue
11
Pages
3730-3736
Citations
716
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Wei Lv, Dai‐Ming Tang, Yan‐Bing He et al. (2009). Low-Temperature Exfoliated Graphenes: Vacuum-Promoted Exfoliation and Electrochemical Energy Storage. ACS Nano , 3 (11) , 3730-3736. https://doi.org/10.1021/nn900933u

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DOI
10.1021/nn900933u