Chitosan complements entrapment of silicon inside nitrogen doped carbon to improve and stabilize the capacity of Li-ion batteries

K. Prasanna*, T. Subburaj, Yong Nam Jo, P. Santhoshkumar, S. K. S. Saravana Karthikeyan, Kumaran Vediappan, R. M. Gnanamuthu, Chang Woo Lee

*Corresponding author for this work

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Abstract

A facile strategy to entrap milled silicon (m-Si) particles using nitrogen-doped-carbon (N-C@ m-Si) to overcome the dramatic volume changes in Si during intercalation of lithium ions and to improve its electronic conductivity is reported here. The only natural nitrogen containing biomaterial alkaline polysaccharide, i. e., chitosan, is used as the carbon source. Simple hydrothermal technique followed by a subsequent carbonization process is used to synthesize N-C and N-C@ m-Si particles. N-C@ m-Si exhibited significantly improved electrochemical performance as compared to bare m-Si, which is confirmed by the obtained discharge capacity of 942.4 mAh g-1 and columbic efficiency of 97% after 50 cycles at 0.1C rate. With regard to the N-C electrodes, the obtained discharge capacity of 485.34 mAh g-1 and columbic efficiency of 99.78%, after 50 cycles at 0.1C rate is superior to the commercial graphite electrodes. The solid electrolyte interphase (SEI) layer that formed over m-Si and N-C@ m-Si electrodes is characterized using X-ray photoelectron spectroscopy. Compared to the SEI layer that formed over m-Si electrode after 10 charge-discharge cycles, the N-C@ m-Si electrode had a stable lithium fluoride and carbonate species. Brief reaction mechanisms, representing the formation of different species in the SEI layer, is derived to explain its behavior during the electrochemical processes.
Original languageEnglish
Article number3318
JournalScientific Reports
Volume9
Issue number1
Number of pages13
ISSN2045-2322
DOIs
Publication statusPublished - 2019

Cite this

Prasanna, K., Subburaj, T., Jo, Y. N., Santhoshkumar, P., Karthikeyan, S. K. S. S., Vediappan, K., ... Lee, C. W. (2019). Chitosan complements entrapment of silicon inside nitrogen doped carbon to improve and stabilize the capacity of Li-ion batteries. Scientific Reports, 9(1), [3318]. https://doi.org/10.1038/s41598-019-39988-4
Prasanna, K. ; Subburaj, T. ; Jo, Yong Nam ; Santhoshkumar, P. ; Karthikeyan, S. K. S. Saravana ; Vediappan, Kumaran ; Gnanamuthu, R. M. ; Lee, Chang Woo. / Chitosan complements entrapment of silicon inside nitrogen doped carbon to improve and stabilize the capacity of Li-ion batteries. In: Scientific Reports. 2019 ; Vol. 9, No. 1.
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title = "Chitosan complements entrapment of silicon inside nitrogen doped carbon to improve and stabilize the capacity of Li-ion batteries",
abstract = "A facile strategy to entrap milled silicon (m-Si) particles using nitrogen-doped-carbon (N-C@ m-Si) to overcome the dramatic volume changes in Si during intercalation of lithium ions and to improve its electronic conductivity is reported here. The only natural nitrogen containing biomaterial alkaline polysaccharide, i. e., chitosan, is used as the carbon source. Simple hydrothermal technique followed by a subsequent carbonization process is used to synthesize N-C and N-C@ m-Si particles. N-C@ m-Si exhibited significantly improved electrochemical performance as compared to bare m-Si, which is confirmed by the obtained discharge capacity of 942.4 mAh g-1 and columbic efficiency of 97{\%} after 50 cycles at 0.1C rate. With regard to the N-C electrodes, the obtained discharge capacity of 485.34 mAh g-1 and columbic efficiency of 99.78{\%}, after 50 cycles at 0.1C rate is superior to the commercial graphite electrodes. The solid electrolyte interphase (SEI) layer that formed over m-Si and N-C@ m-Si electrodes is characterized using X-ray photoelectron spectroscopy. Compared to the SEI layer that formed over m-Si electrode after 10 charge-discharge cycles, the N-C@ m-Si electrode had a stable lithium fluoride and carbonate species. Brief reaction mechanisms, representing the formation of different species in the SEI layer, is derived to explain its behavior during the electrochemical processes.",
author = "K. Prasanna and T. Subburaj and Jo, {Yong Nam} and P. Santhoshkumar and Karthikeyan, {S. K. S. Saravana} and Kumaran Vediappan and Gnanamuthu, {R. M.} and Lee, {Chang Woo}",
year = "2019",
doi = "10.1038/s41598-019-39988-4",
language = "English",
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journal = "Scientific Reports",
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Prasanna, K, Subburaj, T, Jo, YN, Santhoshkumar, P, Karthikeyan, SKSS, Vediappan, K, Gnanamuthu, RM & Lee, CW 2019, 'Chitosan complements entrapment of silicon inside nitrogen doped carbon to improve and stabilize the capacity of Li-ion batteries', Scientific Reports, vol. 9, no. 1, 3318. https://doi.org/10.1038/s41598-019-39988-4

Chitosan complements entrapment of silicon inside nitrogen doped carbon to improve and stabilize the capacity of Li-ion batteries. / Prasanna, K.; Subburaj, T.; Jo, Yong Nam; Santhoshkumar, P.; Karthikeyan, S. K. S. Saravana; Vediappan, Kumaran; Gnanamuthu, R. M.; Lee, Chang Woo.

In: Scientific Reports, Vol. 9, No. 1, 3318, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Chitosan complements entrapment of silicon inside nitrogen doped carbon to improve and stabilize the capacity of Li-ion batteries

AU - Prasanna, K.

AU - Subburaj, T.

AU - Jo, Yong Nam

AU - Santhoshkumar, P.

AU - Karthikeyan, S. K. S. Saravana

AU - Vediappan, Kumaran

AU - Gnanamuthu, R. M.

AU - Lee, Chang Woo

PY - 2019

Y1 - 2019

N2 - A facile strategy to entrap milled silicon (m-Si) particles using nitrogen-doped-carbon (N-C@ m-Si) to overcome the dramatic volume changes in Si during intercalation of lithium ions and to improve its electronic conductivity is reported here. The only natural nitrogen containing biomaterial alkaline polysaccharide, i. e., chitosan, is used as the carbon source. Simple hydrothermal technique followed by a subsequent carbonization process is used to synthesize N-C and N-C@ m-Si particles. N-C@ m-Si exhibited significantly improved electrochemical performance as compared to bare m-Si, which is confirmed by the obtained discharge capacity of 942.4 mAh g-1 and columbic efficiency of 97% after 50 cycles at 0.1C rate. With regard to the N-C electrodes, the obtained discharge capacity of 485.34 mAh g-1 and columbic efficiency of 99.78%, after 50 cycles at 0.1C rate is superior to the commercial graphite electrodes. The solid electrolyte interphase (SEI) layer that formed over m-Si and N-C@ m-Si electrodes is characterized using X-ray photoelectron spectroscopy. Compared to the SEI layer that formed over m-Si electrode after 10 charge-discharge cycles, the N-C@ m-Si electrode had a stable lithium fluoride and carbonate species. Brief reaction mechanisms, representing the formation of different species in the SEI layer, is derived to explain its behavior during the electrochemical processes.

AB - A facile strategy to entrap milled silicon (m-Si) particles using nitrogen-doped-carbon (N-C@ m-Si) to overcome the dramatic volume changes in Si during intercalation of lithium ions and to improve its electronic conductivity is reported here. The only natural nitrogen containing biomaterial alkaline polysaccharide, i. e., chitosan, is used as the carbon source. Simple hydrothermal technique followed by a subsequent carbonization process is used to synthesize N-C and N-C@ m-Si particles. N-C@ m-Si exhibited significantly improved electrochemical performance as compared to bare m-Si, which is confirmed by the obtained discharge capacity of 942.4 mAh g-1 and columbic efficiency of 97% after 50 cycles at 0.1C rate. With regard to the N-C electrodes, the obtained discharge capacity of 485.34 mAh g-1 and columbic efficiency of 99.78%, after 50 cycles at 0.1C rate is superior to the commercial graphite electrodes. The solid electrolyte interphase (SEI) layer that formed over m-Si and N-C@ m-Si electrodes is characterized using X-ray photoelectron spectroscopy. Compared to the SEI layer that formed over m-Si electrode after 10 charge-discharge cycles, the N-C@ m-Si electrode had a stable lithium fluoride and carbonate species. Brief reaction mechanisms, representing the formation of different species in the SEI layer, is derived to explain its behavior during the electrochemical processes.

U2 - 10.1038/s41598-019-39988-4

DO - 10.1038/s41598-019-39988-4

M3 - Journal article

C2 - 30824812

VL - 9

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 3318

ER -