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Tuning kinetics of SnS/Ni3S4 binary sulfides for high rate and long cyclic lithium-ion batteries.
- Source :
- New Journal of Chemistry; 2/14/2024, Vol. 48 Issue 6, p2755-2763, 9p
- Publication Year :
- 2024
-
Abstract
- Nanomaterials synergy in a binary system offers a great opportunity for the development of high-performance electrode material for Lithium-ion batteries (LiBs). So far SnS/Ni<subscript>3</subscript>S<subscript>4</subscript> binary sulfides are scarcely investigated as an anode for LIBs. In this work, to intrinsically enhance the kinetics of SnS, SnS/Ni<subscript>3</subscript>S<subscript>4</subscript> (SN-x) binary sulfides were synthesized by introducing nickel sulfide with different stoichiometric ratios (0.5, 1, 2, and 3). The developed electrode (SN-2) delivers an initial discharge capacity of 2567 mA h g<superscript>−1</superscript> and a high reversible capacity of 360 mA h g<superscript>−1</superscript> at a current rate of 300 mA g<superscript>−1</superscript> after 180 cycles with a Coulombic efficiency of over 97%. The electrochemical impedance spectroscopy (EIS) and density functional theory (DFT) confirm the improved kinetics of the SN-2 electrode as compared to other electrodes. The significantly enhanced performance of the SN-2 electrode can be attributed to the addition of an optimized amount of Ni<subscript>3</subscript>S<subscript>4</subscript>, synergistic effects between SnS and Ni<subscript>3</subscript>S<subscript>4</subscript>, generation of more active sites and structural integrity. This work suggests that the prepared SnS/Ni<subscript>3</subscript>S<subscript>4</subscript> binary sulfides exhibit great promise for the development of efficient energy storage devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 48
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 175256715
- Full Text :
- https://doi.org/10.1039/d3nj03862a