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Nitrogen-Doped Carbon Nanoparticles by Flame Synthesis as Anode Material for Rechargeable Lithium-Ion Batteries

Authors
Bhattacharjya, DhrubajyotiPark, Hyean-YeolKim, Min-SikChoi, Hyuck-SooInamdar, Shaukatali N.Yu, Jong-Sung
Issue Date
14-1월-2014
Publisher
AMER CHEMICAL SOC
Citation
LANGMUIR, v.30, no.1, pp.318 - 324
Indexed
SCIE
SCOPUS
Journal Title
LANGMUIR
Volume
30
Number
1
Start Page
318
End Page
324
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/99541
DOI
10.1021/la403366e
ISSN
0743-7463
Abstract
Nitrogen-doped turbostratic carbon nanoparticles (NPs) are prepared using fast single-step flame synthesis by directly burning acetonitrile in air atmosphere and investigated as an anode material for lithium-ion batteries. The as-prepared N-doped carbon NPs show excellent Li-ion stoarage properties with initial discharge capacity of 596 mA h g(-1), which is 17% more than that shown by the corresponding undoped carbon NPs synthesized by identical process with acetone as carbon precursor and also much higher than that of commercial graphite anode. Further analysis shows that the charge-discharge process of N-doped carbon is highly stable and reversible not only at high current density but also over 100 cycles, retaining 71% of initial discharge capacity. Electrochemical impedance spectroscopy also shows that N-doped carbon has better conductivity for charge and ions than that of undoped carbon. The high specific capacity and very stable cyclic performance are attributed to large number of turbostratic defects and N and associated increased O content in the flame-synthesized N-doped carbon. To the best of our knowledge, this is the first report which demonstrates single-step, direct flame synthesis of N-doped turbostratic carbon NPs and their application as a potential anode material with high capacity and superior battery performance. The method is extremely simple, low cost, energy efficient, very effective, and can be easily scaled up for large scale production.
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