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Kang, Seok Ju
Smart Materials for Energy Lab
Research Interests
  • Metal-Oxygen battery, low dimensional materials, organic flexible memory, organic solar cell

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Deactivation of carbon electrode for elimination of carbon dioxide evolution from rechargeable lithium-oxygen cells

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Title
Deactivation of carbon electrode for elimination of carbon dioxide evolution from rechargeable lithium-oxygen cells
Author
Kang, Seok JuMori, TakashiNarizuka, SatoruWilcke, WinfriedKim, Ho-Cheol
Issue Date
2014-05
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.5, no., pp.3937 -
Abstract
Carbon has unfaired advantages in material properties to be used as electrodes. It offers a low cost, light weight cathode that minimizes the loss in specific energy of lithium-oxygen batteries as well. To date, however, carbon dioxide evolution has been an unavoidable event during the operation of non-aqueous lithium-oxygen batteries with carbon electrodes, due to the reactivity of carbon against self-decomposition and catalytic decomposition of electrolyte. Here we report a simple but potent approach to eliminate carbon dioxide evolution by using an ionic solvate of dimethoxyethane and lithium nitrate. We show that the solvate leads to deactivation of the carbon against parasitic reactions by electrochemical doping of nitrogen into carbon. This work demonstrates that one could take full advantage of carbon by mitigating the undesired activity. © 2014 Macmillan Publishers Limited. All rights reserved.
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DOI
10.1038/ncomms4937
ISSN
2041-1723
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ECHE_Journal Papers
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