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Sandwiched ReS2 nanocables with dual carbon coating for efficient K+/Na+ storage performance.

Authors :
Xu, Jun
Cao, Fang
Yang, Xiaoyuan
Chen, Xing
Zhang, Yan
Chen, Junwei
He, Liqing
Kang, Wenpei
Source :
Journal of Colloid & Interface Science. Sep2024, Vol. 669, p825-834. 10p.
Publication Year :
2024

Abstract

[Display omitted] In this work, the nanocables of few-layered ReS 2 nanosheets sandwiched between carbon nanotubes (CNTs) and nitrogen-doped amorphous carbon (NC) coating (i.e., CNT@ReS 2 @NC) are synthesized as high-performance anodes of both potassium-ion batteries (PIBs) and sodium-ion batteries (SIBs). The CNT@ReS 2 @NC nanocables with dual carbon modifications have the several advantages for efficient K+/Na+ storage. The few-layered ReS 2 nanosheets with a wide interlayer spacing of 0.64 nm contribute to accelerated reaction kinetics for fast K+/Na+ intercalation/extraction. The carbon nanotube skeleton with a hollow interior can effectively relieve the volume change and serve as a robust conductive network to boost structural stability. The NC layer provides rich defects as active sites and suppresses the shuttle effect of polysulfides produced in discharge/charge processes. Consequently, the CNT@ReS 2 @NC nanocables possess outstanding electrochemical performance in both PIBs and SIBs owing to the synergistic effect from the different components. A long cycling lifespan of 3500 cycles with a maintained discharge capacity of 125 mAh/g is achieved for CNT@ReS 2 @NC at 1 A/g in PIBs. In SIBs, it can keep a high capacity of 202 mAh/g over 3000 cycles at 5 A/g. Moreover, the CNT@ReS 2 @NC||Na 3 V 2 (PO 4) 3 full cell can exhibit remarkable cycling performance, yielding a low capacity decay rate of 0.019 % per cycle over 1000 cycles at 2C. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00219797
Volume :
669
Database :
Academic Search Index
Journal :
Journal of Colloid & Interface Science
Publication Type :
Academic Journal
Accession number :
177420595
Full Text :
https://doi.org/10.1016/j.jcis.2024.05.063