Abstract
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−1 at 0.2 C), superior rate capability (388 and 358 mA h g−1 at 3 C and 5 C, respectively), and excellent cycling performance (330 mA h g−1 at 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.
| Original language | English |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 9 |
| Journal | Chemical Engineering Journal |
| Volume | 315 |
| DOIs | |
| Publication status | Published - 2017 May 1 |
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Keywords
- Lithium-ion batteries
- N-doped carbon nanofibers
- Open channels
- Recycling
- Waste poly(vinyl butyral)
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
Superior lithium storage in nitrogen-doped carbon nanofibers with open-channels. / Park, Sung Woo; Kim, Jae Chan; Dar, Mushtaq Ahmad; Shim, Hyun Woo; Kim, Dong-Wan.
In: Chemical Engineering Journal, Vol. 315, 01.05.2017, p. 1-9.Research output: Contribution to journal › Article
}
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
PY - 2017/5/1
Y1 - 2017/5/1
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−1 at 0.2 C), superior rate capability (388 and 358 mA h g−1 at 3 C and 5 C, respectively), and excellent cycling performance (330 mA h g−1 at 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−1 at 0.2 C), superior rate capability (388 and 358 mA h g−1 at 3 C and 5 C, respectively), and excellent cycling performance (330 mA h g−1 at 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)
UR - http://www.scopus.com/inward/record.url?scp=85009823769&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85009823769&partnerID=8YFLogxK
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 -