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Bobby G. Sumpter

Researcher at Oak Ridge National Laboratory

Publications -  652
Citations -  28014

Bobby G. Sumpter is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Polymer & Graphene. The author has an hindex of 60, co-authored 619 publications receiving 23583 citations. Previous affiliations of Bobby G. Sumpter include University of Florida & Cornell University.

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Ultrathin Planar Graphene Supercapacitors

TL;DR: An "in-plane" fabrication approach for ultrathin supercapacitors based on electrodes comprised of pristine graphene and multilayer reduced graphene oxide to provide a prototype for a broad range of thin-film based energy storage devices.
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Controlled formation of sharp zigzag and armchair edges in graphitic nanoribbons.

TL;DR: This work has demonstrated an efficient edge-reconstruction process, at the atomic scale, for graphitic nanoribbons by Joule heating, which involves point defect annealing and edge reconstruction.
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Density-functional approaches to noncovalent interactions: A comparison of dispersion corrections (DFT-D), exchange-hole dipole moment (XDM) theory, and specialized functionals

TL;DR: It is concluded that distinct, often contrasting, groups of these elicit the best performance within the accessible double-ζ or robust triple-η basis set regimes and among hydrogen-bonded or dispersion-dominated complexes.
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Theoretical Model for Nanoporous Carbon Supercapacitors

TL;DR: This work proposes a heuristic model to replace the commonly used model for an electric double-layer capacitor (EDLC) on the basis of anElectric double-cylinder capacitor for mesopores (2 {50 nm pore size), which becomes an electric wire-in-cylinders capacitor (EWCC) for micropores (< 2 nm port size).