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Copper Zinc Sulfide (CuZnS) Quantum Dot-Decorated (NiCo)-S/Conductive Carbon Matrix as the Cathode for Li-S Batteries
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Document Title
Copper Zinc Sulfide (CuZnS) Quantum Dot-Decorated (NiCo)-S/Conductive Carbon Matrix as the Cathode for Li-S Batteries
Author
Artchuea T, Srikhaow A, Sriprachuabwong C, Tuantranont A, Tang IM, Pon-On W
Name from Authors Collection
Scopus Author ID
8532633300
Affiliations
Kasetsart University; National Science & Technology Development Agency - Thailand; Mahidol University
Type
Article
Source Title
NANOMATERIALS
Year
2022
Volume
12
Issue
14
Page
-
Open Access
Green Published, gold
Publisher
MDPI
DOI
10.3390/nano12142403
Format
Abstract
Sulfur composites consisting of electrochemical reactive catalysts/conductive materials are investigated for use in lithium-sulfur (Li-S) batteries (LSBs). In this paper, we report the synthesis, physicochemical and electrochemical properties of CuZnS quantum dots (CZSQDs) decorated with nickel-cobalt-sulfide ((NiCo)-S)) mixed with reduced graphene oxide (rGO)/oxidized carbon nanotube (oxdCNT) (rGO/oxdCNT) ((NiCo)-S@rGO/oxdCNT) composites. These composites are for the purpose of being the sulfur host cathode in Li-S batteries. The as-prepared composites showed a porous structure with the CZSQDs being uniformly found on the surface of the rGO/oxdCNT, which had a specific surface area of 26.54 m(2)/g. Electrochemical studies indicated that the (NiCo)-S@rGO/oxdCNT cells forming the cathode exhibited a maximum capacity of 1154.96 mAhg(-1) with the initial discharge at 0.1 C. The smaller size of the CZSQDs (similar to 10 nm) had a positive effect on the CZSQDs@(NiCo)-S@rGO/oxdCNT composites in that they had a higher initial discharge capacity of 1344.18 mAhg(-1) at 0.1 C with the Coulombic efficiency being maintained at almost 97.62% during cycling. This latter property is approximately 1.16 times more compared to the absence of the Cu-Zn-S QD loading. This study shows that the CuZnS quantum dots decorated with a (NiCo)-S@rGO/oxdCNT supporting matrix-based sulfur cathode have the potential to improve the performance of future lithium-sulfur batteries.
Funding Sponsor
Thailand Graduate Institute of Science and Technology [TGIST: SCA-CO-2562-9739-TH]; Thailand Research Fund (TRF) [RTA6080007, RTA6180004]; Energy Conservation Promotion Fund, Ministry of Energy, Thailand [P1750659]
Publication Source
WOS