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- W2783452748 abstract "Abstract High performance is indispensable for amorphous carbon materials toward sodium-ion batteries anode. Heteroatom doping has proved to be an effective strategy to improve the electrochemical performance of carbon-based materials. In this paper, N, P dual-doped carbon sheets (N, P CS) from the rinds of corn stalks have been successfully synthesized via a hydrothermal reaction using the cheap (NH4)2HPO4 as nitrogen and phosphorus source. SEM and TEM images showed that the N, P CS was composed of loose and stacked graphitic carbon sheets, which facilitated the penetration of electrolyte and ion diffusion. Higher ID/IG value (1.692) implied more defective sites on the surface of graphitic sheet to be generated after N and P co-doping, which combined with larger graphene layer distance (0.391 nm) contributed to the high performance of the N, P CS. When used as anode for sodium ion batteries, it presents a specific capacity of 277 mAh g−1 after 100 cycles at 0.25C, and a specific capacity of 202 mAh g−1 after 200 cycles at 1C. Even at a high rate of 5C, a stable specific capacity of 105 mAh g−1 still could be delivered after 2000 cycles, suggesting an excellent cycle stability and superior rate capability." @default.
- W2783452748 created "2018-01-26" @default.
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- W2783452748 date "2018-04-01" @default.
- W2783452748 modified "2023-09-26" @default.
- W2783452748 title "A sustainable route from corn stalks to N, P-dual doping carbon sheets toward high performance sodium-ion batteries anode" @default.
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- W2783452748 doi "https://doi.org/10.1016/j.carbon.2018.01.007" @default.
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