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Sb-Doped metallic 1T-MoS nanosheets embedded in N-doped carbon as high-performance anode materials for half/full sodium/potassium-ion batteries
Metal 1T phase molybdenum disulfide (1T-MoS 2 ) is being actively considered as a promising anode due to its high conductivity, which can improve electron transfer. Herein, we elaborately designed stable Sb-doped metallic 1T phase molybdenum sulfide (1T-MoS 2 -Sb) with a few-layered nanosheet struct...
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Published in: | Dalton transactions : an international journal of inorganic chemistry 2022-08, Vol.51 (31), p.11685-11692 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | |
Online Access: | Get full text |
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Summary: | Metal 1T phase molybdenum disulfide (1T-MoS
2
) is being actively considered as a promising anode due to its high conductivity, which can improve electron transfer. Herein, we elaborately designed stable Sb-doped metallic 1T phase molybdenum sulfide (1T-MoS
2
-Sb) with a few-layered nanosheet structure
via
a simple calcination technique. The N-doping of the carbon and Sb-doping induce the formation of T-phase MoS
2
, which not only effectively enhances the entire stability of the structure, but also improves its cycling performance and stability. When employed as an anode of sodium-ion batteries (SIBs), 1T-MoS
2
-Sb exhibits a reversible capacity of 493 mA h g
−1
at 0.1 A g
−1
after 100 cycles and delivers prominent long-term performance (253 mA h g
−1
at 1 A g
−1
after 2200 cycles) along with decent rate capability. Paired with a Na
3
V
2
(PO
4
)
3
cathode, it displays a superior capacity of 242 mA h g
−1
at 0.5 A g
−1
over 100 cycles, which is one of the best performances of a MoS
2
-based full cell for SIBs. Employed as the anode for potassium-ion batteries (PIBs), it exhibits a satisfactory specific capacity of 343 mA h g
−1
at 0.1 A g
−1
after 100 cycles. This facile strategy will provide new insights for designing T-phase advanced anode materials for SIBs/PIBs.
1T-MoS
2
-Sb composite is synthesized by a facile strategy couples with sulfuration process with the assistance of chitosan as the adsorbent. It exhibits an impressive capacity and ultra-long cycling lifespan for sodium/potassium-ion batteries. |
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ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/d2dt01986h |