In:
Dalton Transactions, Royal Society of Chemistry (RSC), Vol. 51, No. 42 ( 2022), p. 16126-16134
Abstract:
Herein, we present a freestanding and flexible 3D nanocomposite made of polyhedral spherical FeCoS 2 and nitrogen-doped hollow carbon nanofibers (FeCoS 2 @N-HCNFs) that is synthesized through coaxial electrospinning, high-temperature calcination, and a facile solvothermal process. As a binder-free anode composite for potassium-ion batteries (PIBs), FeCoS 2 @N-HCNF presents a high specific discharge capacity on the first lap (701.2 mA h g −1 at 100 mA g −1 ) and superior cycling stability (132.6 mA h g −1 at 3200 mA g −1 after 600 cycles). The impressive electrochemical performance can be ascribed to the unique 3D structure, such as the enormous specific surface area of the mesoporous structure beneficial for K + transfer, the three-dimensional hollow carbon nanofiber scaffold enhances the structural stability, and polyhedral spherical FeCoS 2 improves the overall specific capacity. According to the above description, the FeCoS 2 @N-HCNF anode is a promising candidate for advanced potassium-ion batteries.
Type of Medium:
Online Resource
ISSN:
1477-9226
,
1477-9234
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1472887-4
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