P-Doped Cotton Stalk Carbon for High-Performance Lithium-Ion Batteries and Lithium-Sulfur Batteries.
Langmuir
; 38(38): 11610-11620, 2022 Sep 27.
Article
en En
| MEDLINE
| ID: mdl-36104265
ABSTRACT
Biomass as a carbon material source is the characteristic of green chemistry. Herein, a series of hierarchical P-doped cotton stalk carbon materials (HPCSCMs) were prepared from cheap and abundant biowaste cotton stalk. These materials possess a surface area of 3463.14 m2 g-1 and hierarchical pores. As lithium-ion battery (LIB) anodes, the samples exhibit 1100 mAh g-1 at 0.1 A g-1 after 100 cycles and hold 419 mAh g-1 at 1 A g-1 after 1000 cycles, with nearly 100% capacity retention. After HPCSCMs are loaded with sulfur (S/HPCSCMs), the samples (S/HPCSCMs-2) deliver a discharge capacity of 413 mAh g-1 at 0.1 A g-1 after 100 cycles as lithium-sulfur (Li-S) battery cathodes. This excellent electrochemical performance can be attributed to P in carbon networks, which not only provides more active sites, but also improves electrical conductivity.
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MEDLINE
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En
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Langmuir
Asunto de la revista:
QUIMICA
Año:
2022
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Article