TY - JOUR
T1 - Superior lithium storage in nitrogen-doped carbon nanofibers with open-channels
AU - Park, Sung Woo
AU - Kim, Jae Chan
AU - Dar, Mushtaq Ahmad
AU - Shim, Hyun Woo
AU - Kim, Dong Wan
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science, ICT and Future Planning (Nos. 2016R1A2B2012728 and 2016M3A7B4909318). The authors extend their appreciation to the International Scientific Partnership Program ISPP at King Saud University for funding this research work through ISPP# 0076).
Publisher Copyright:
© 2017 Elsevier B.V.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017
Y1 - 2017
N2 - Increasing porosity and nitrogen doping are the most effective strategies for enhancing lithium storage in carbon-based anodes for lithium-ion batteries (LIBs). In this study, we prepare nitrogen-doped carbon nanofibers with open channels (N-CNFO) using a simple electrospinning method with subsequent two-step carbonization using polyacrylonitrile, waste poly(vinyl butyral) (W-PVB), and urea. The W-PVB induce open channels including pores of various sizes, and the urea increase the nitrogen content of the carbon fibers. N-CNFO exhibit excellent electrochemical properties as an anode material for LIBs, including high reversible capacity (734 mA h g−1at 0.2 C), superior rate capability (388 and 358 mA h g−1at 3 C and 5 C, respectively), and excellent cycling performance (330 mA h g−1at 1 C after 500 cycles). These properties are imparted to the material owing to the high electrical conductivity of the web structure, the increased number of active sites derived from the open channel structure, and the high nitrogen content, specifically that of N-5 species. This facile synthesis using a waste resource may offer a new direction for the design of superior carbon-based anode materials for high-energy LIBs.
AB - Increasing porosity and nitrogen doping are the most effective strategies for enhancing lithium storage in carbon-based anodes for lithium-ion batteries (LIBs). In this study, we prepare nitrogen-doped carbon nanofibers with open channels (N-CNFO) using a simple electrospinning method with subsequent two-step carbonization using polyacrylonitrile, waste poly(vinyl butyral) (W-PVB), and urea. The W-PVB induce open channels including pores of various sizes, and the urea increase the nitrogen content of the carbon fibers. N-CNFO exhibit excellent electrochemical properties as an anode material for LIBs, including high reversible capacity (734 mA h g−1at 0.2 C), superior rate capability (388 and 358 mA h g−1at 3 C and 5 C, respectively), and excellent cycling performance (330 mA h g−1at 1 C after 500 cycles). These properties are imparted to the material owing to the high electrical conductivity of the web structure, the increased number of active sites derived from the open channel structure, and the high nitrogen content, specifically that of N-5 species. This facile synthesis using a waste resource may offer a new direction for the design of superior carbon-based anode materials for high-energy LIBs.
KW - Lithium-ion batteries
KW - N-doped carbon nanofibers
KW - Open channels
KW - Recycling
KW - Waste poly(vinyl butyral)
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U2 - 10.1016/j.cej.2017.01.005
DO - 10.1016/j.cej.2017.01.005
M3 - Article
AN - SCOPUS:85009823769
VL - 315
SP - 1
EP - 9
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -
