NiCo₂S₄/MoS₂ Nanocomposites for Long-Life High-Performance Hybrid Supercapacitors.

Content Provider	Europe PMC
Author	Tue, Le Nhu Minh Sahoo, Sumanta Dhakal, Ganesh Nguyen, Van Hoa Lee, Jintae Lee, Yong Rok Shim, Jae-Jin
Editor	Costa, Carlos Miguel
Copyright Year	2023
Abstract	Metal sulfides (MS) and mixed metal sulfides (MTMS) have been considered potential candidates over their metal oxide/mixed metal oxide counterparts in recent years. Herein, one MTMS, i.e., NiCo2S4, was combined with 2D MS MoS2 through a single-step solvothermal process with different morphologies (sheet-like and rod-like) for supercapacitor applications. The resulting electrode exhibited excellent coulombic efficiency, high specific capacitance, superior energy density, and, most importantly, ultra-high cycling stability. In particular, the electrode delivered a capacitance of 2594 F g−1 at 0.8 A g−1 after 45,000 charge/discharge cycles with a remarkable stability of 192%. Moreover, the corresponding hybrid supercapacitor device displayed an impressive coulombic efficiency of 123% after 20,000 cycles and 118% after 45,000 cycles. In addition, the device also exhibited a decent energy density of 31.9 Wh kg−1 and good cycling stability of 102% over 15,000 cycles.
Journal	Nanomaterials (Basel, Switzerland)
Volume Number	13
PubMed Central reference number	PMC9960812
Issue Number	4
PubMed reference number	36839056
e-ISSN	20794991
DOI	10.3390/nano13040689
Language	English
Publisher	MDPI
Publisher Date	2023-02-10
Access Restriction	Open
Rights License	Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors.
Subject Keyword	supercapacitor NiCo2S4 MoS2 coulombic efficiency cycling stability
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Materials Science