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Gewählte Publikation:

Lu, Y; Li, DH; Lyu, CX; Liu, HL; Liu, B; Lyu, SY; Rosenau, T; Yang, DJ.
(2019): High nitrogen doped carbon nanofiber aerogels for sodium ion batteries: synergy of vacancy defects to boost sodium ion storage
APPL SURF SCI. 2019; 496, UNSP 143717 FullText FullText_BOKU

Abstract:
The electrochemical performance of sodium ion batteries (SIBs) may be enhanced through improving current carbonaceous materials. These materials exhibit the inferior sodium storage performance due to the limited interlayer spacing and Na+ intercalation. We report an approach for preparing porous nitrogen-doped carbon nanofiber (20 nm diameter) aerogels with large-size defect structures and the high N content derived from chitin. When the aerogels were utilized as the anode material for SIBs, the sample showed the high reversible capacity of 282 mA h g(-1) at 0.1 A g(-1), the satisfactory rate capability of 175 mA h g(-1) at 5 A g(-1) and the super cycling stability (249 mA h g(-1) at 0.5 A g(-1) over 7000 cycles). According to the computation results of density functional theory (DFT), the optimally enhanced electrochemical performance of N-doped material for SIB anodes was ascribed to the synergistic effect of defect structures and N-doping, thus providing the theoretical basis of the complementary relationship between the improved sodium storage performance and structural defects in the carbon framework.
Autor/innen der BOKU Wien:
Rosenau Thomas
BOKU Gendermonitor:


Find related publications in this database (Keywords)
N-doped
Biomass nanofibers
SIBs
Defects
Na adsorption


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