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Appl. Sci. 2018, 8(2), 209; https://doi.org/10.3390/app8020209

Highly Graphitic Carbon Nanofibers Web as a Cathode Material for Lithium Oxygen Batteries

1
Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Slechtitelu 11, 783 71 Olomouc, Czech Republic
2
Department of Energy Engineering, Hanyang University, Seoul 133-791, Korea
*
Author to whom correspondence should be addressed.
Received: 20 December 2017 / Revised: 20 January 2018 / Accepted: 25 January 2018 / Published: 31 January 2018
(This article belongs to the Special Issue Advanced Materials for Rechargeable Lithium Batteries)
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Abstract

The lithium oxygen battery is a promising energy storage system due to its high theoretical energy density and ability to use oxygen from air as a “fuel”. Although various carbonaceous materials have been widely used as a cathode material due to their high electronic conductivity and facial processability, previous studies mainly focused on the electrochemical properties associated with the materials (such as graphene and carbon nanotubes) and the electrode configuration. Recent reports demonstrated that the polarization associated with cycling could be significantly increased by lithium carbonates generated from the reaction between the carbon cathode and an electrolyte, which indicates that the physicochemical properties of the carbon cathode could play an important role on the electrochemical performances. However, there is no systematic study to understand these phenomena. Here, we systematically explore the electrochemical properties of carbon nanofibers (CNF) webs with different graphitization degree as a cathode for Li oxygen batteries. The physicochemical properties and electrochemical properties of CNF webs were carefully monitored before and after cycling. CNF webs are prepared at 1000, 1200 and 1400 °C. CNF web pyrolyzed at 1400 °C shows lowered polarization and improved cycle retention compared to those of CNF webs pyrolyzed at 1000 and 1200 °C. View Full-Text
Keywords: carbon nanofibers; electrospinning; lithium oxygen batteries carbon nanofibers; electrospinning; lithium oxygen batteries
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Han, H.; Jeon, Y.; Liu, Z.; Song, T. Highly Graphitic Carbon Nanofibers Web as a Cathode Material for Lithium Oxygen Batteries. Appl. Sci. 2018, 8, 209.

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