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Microstructures of Reduced Graphene OxideSulfur Nanocomposites and Their Impacts on Lithium Storage Performances
Joint Authors
Pavel, I. E.
Blake, Aaron J.
Dorney, Kevin
Huang, H.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-12-31
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The lithium-sulfur (Li/S) concept has a theoretical specific capacity of 1672 mAh g−1 based on the complete reduction of S into lithium sulfide (Li2S).
Practically, however, a pure S electrode encounters low deliverable capacity and poor charge/discharge cycle life owing to S’s electrical insulation and problems associated with polysulfide dissolution.
Here, we report our studies to couple S with reduced graphene oxide (rGO) prepared via either mechanical milling or chemical precipitation.
The differences of the resulting rGO/S composites with respect to morphology, structure, composition, and phase transformations are extensively studied.
Thermal analyses, X-ray diffraction, scanning electron microscopy, and Raman spectroscopic results on the chemical rGO/S consistently confirmed the existence of amorphous/nanocrystalline S and their homogeneous distribution as well as interaction with the rGO microstructure.
The electrochemical performances of chemical rGO/S revealed a marked improvement in both capacity retention and S utilization compared to those of the mechanical rGO/S.
American Psychological Association (APA)
Blake, Aaron J.& Dorney, Kevin& Pavel, I. E.& Huang, H.. 2015. Microstructures of Reduced Graphene OxideSulfur Nanocomposites and Their Impacts on Lithium Storage Performances. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1068822
Modern Language Association (MLA)
Blake, Aaron J.…[et al.]. Microstructures of Reduced Graphene OxideSulfur Nanocomposites and Their Impacts on Lithium Storage Performances. Journal of Nanomaterials No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1068822
American Medical Association (AMA)
Blake, Aaron J.& Dorney, Kevin& Pavel, I. E.& Huang, H.. Microstructures of Reduced Graphene OxideSulfur Nanocomposites and Their Impacts on Lithium Storage Performances. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1068822
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1068822