Issue 38, 2023, Issue in Progress

Self-assembled molybdenum disulfide nanoflowers regulated by lithium sulfate for high performance supercapacitors

Abstract

Recently, molybdenum disulfide (MoS2) has been extensively investigated as a promising pseudocapacitor electrode material. However, MoS2 usually exhibits inferior rate capability and cyclability, which restrain its practical application in energy storage. In this work, MoS2 nanoflowers regulated by Li2SO4 (L-MoS2) are successfully fabricated via intercalating solvated Li ions. Via appropriate intercalation of Li2SO4, MoS2 nanosheets could self-assemble to form L-MoS2 nanoflowers with an interlayer spacing of 0.65 nm. Due to the large specific surface area (23.7 m2 g−1) and high 1T phase content (77.5%), L-MoS2 as supercapacitor electrode delivers a maximum specific capacitance of 356.7 F g−1 at 1 A g−1 and maintains 49.8% of capacitance retention at 20 A g−1. Moreover, the assembled L-MoS2 symmetric supercapacitor (SSC) device displays an energy density of 6.5 W h kg−1 and 79.6% of capacitance retention after 3000 cycles.

Graphical abstract: Self-assembled molybdenum disulfide nanoflowers regulated by lithium sulfate for high performance supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
19 Jul 2023
Accepted
31 Aug 2023
First published
04 Sep 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 26509-26515

Self-assembled molybdenum disulfide nanoflowers regulated by lithium sulfate for high performance supercapacitors

Y. Li, Y. Sun, S. Zhang, X. Wu, M. Song, M. Jiao, Q. Qin and L. Mi, RSC Adv., 2023, 13, 26509 DOI: 10.1039/D3RA04852G

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