2019
DOI: 10.1016/j.ssi.2019.04.025
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Synthesis of nitrogen-doped porous carbon nanofibers as an anode material for high performance sodium-ion batteries

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Cited by 13 publications
(11 citation statements)
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“…Nitrogen and oxygen groups also play role in the storage of Na + ions. Our results agree well with previously reported data that the increased concentration of nitrogen, mainly pyridinic form, is one of the reasons for improving Na-ion storage capacity [14,15,18]. Piedboeuf et al found that among the oxygen-containing functionalities only carbonyl groups resulted in the increased storage capacity of Li + ions [93].…”
Section: Discussionsupporting
confidence: 93%
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“…Nitrogen and oxygen groups also play role in the storage of Na + ions. Our results agree well with previously reported data that the increased concentration of nitrogen, mainly pyridinic form, is one of the reasons for improving Na-ion storage capacity [14,15,18]. Piedboeuf et al found that among the oxygen-containing functionalities only carbonyl groups resulted in the increased storage capacity of Li + ions [93].…”
Section: Discussionsupporting
confidence: 93%
“…The observed increase in specific capacity by 40-50% for N-Cw and 60-85% for N-Ca could be caused by the formation of new active sites for Na-ion storage. These values are similar to those reported for various pure and N-doped carbonaceous materials, such as graphitic carbon, hard carbon, carbon fibers and biomass-delivered porous carbon [2,15,18,[54][55][56][57]. The first cycle capacity loss of 1114 mAh g −1 for N-C, 1768 mAh g −1 for N-Cw, and 1803 mAh g −1 for N-Ca is attributed to the formation of a solid electrolyte interphase (SEI) layer and an irreversible reaction between the surface functional groups and Na + ions (Figure 7a).…”
Section: Electrochemical Propertiessupporting
confidence: 88%
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“…The surface chemical components of the HPCs have been defined by XPS. Figure 4B shows that the O/C ratios of CLR‐700 and HPC‐700 are 0.15 and 0.13, the existence of C and O has been clearly illustrated 54,55 . CLR‐700 has enriched Ca and O elements on the surface, and Ca element is derived from residue ashes.…”
Section: Resultsmentioning
confidence: 99%
“…Figure 4B shows that the O/C ratios of CLR-700 and HPC-700 are 0.15 and 0.13, the existence of C and O has been clearly illustrated. 54,55 CLR-700 has enriched Ca and O elements on the surface, and Ca element is derived from residue ashes. But the calcic peaks did not appear in HPC-700, indicating that impurities in the CLR are removed well by KOH.…”
Section: Resultsmentioning
confidence: 99%