MoS2 mediated nitrogen enriched composite material for high and fast Li-ion storage

[Display omitted] •The electrochemical properties of C3N4 altered by a mediator MoS2.•The cluster type of MoS2 on the C3N4 enhances the surface area of the electrochemical active site by creating channels for quick ion transfer.•The MoS2 mediated C3N4 provides enhanced capacity, rate and cyclic stab...

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Bibliographic Details
Published in:Applied surface science 2020-09, Vol.525, p.146437, Article 146437
Main Authors: Angamuthu, Gnanavel, Rengarajan, Venkatesan
Format: Article
Language:English
Subjects:
Anode material
Carbon nitride (C3N4)
High lithium storage
Lithium-ion battery
Mediator
Molybdenum disulfide (MoS2)
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Summary:[Display omitted] •The electrochemical properties of C3N4 altered by a mediator MoS2.•The cluster type of MoS2 on the C3N4 enhances the surface area of the electrochemical active site by creating channels for quick ion transfer.•The MoS2 mediated C3N4 provides enhanced capacity, rate and cyclic stability. The growth of lithium-ion battery technology is hindered due to its limited ionic conductivity, slow kinetics, and volume expansion. To address these issues, we have developed a composite MoS2@C3N4 by using the nitrogen-rich carbon nitride (C3N4) with a mediator molybdenum disulfide (MoS2). The MoS2@C3N4 composite delivers a reversible capacity of 2283 mAh g−1 at 0.1 C-rate over 500 cycles and exhibits superior rate capability and cycling stability than the C3N4. The enhanced performance is attributed to the utilization of a mediator MoS2 which alters its physicochemical properties, heterojunction formation and the enhanced electrochemical active porous site, consisting of channels for easy penetration of Li-ion.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2020.146437