The interplay between different potassium electrolytes and MoS 2 @SiC@S cathodes in the performance of potassium-sulfur batteries.

Autor: Zhou L; School of Materials Science and Engineering, Advanced Chemical Engineering and Energy Materials Research Center, China University of Petroleum (East China) Qingdao 266580 China., Ragab O; Physics Department, Faculty of Science, Benha University Benha 13518 Egypt islam.shihah@fsc.bu.edu.eg., Wally NK; Physics Department, Faculty of Science, Suez University Suez 43518 Egypt., Qasim KF; Chemistry Department, Faculty of Science, Suez University Suez 43518 Egypt., Li X; School of Materials Science and Engineering, Advanced Chemical Engineering and Energy Materials Research Center, China University of Petroleum (East China) Qingdao 266580 China., El-Desoky MM; Physics Department, Faculty of Science, Suez University Suez 43518 Egypt., Xing W; School of Materials Science and Engineering, Advanced Chemical Engineering and Energy Materials Research Center, China University of Petroleum (East China) Qingdao 266580 China., Sheha E; Physics Department, Faculty of Science, Benha University Benha 13518 Egypt islam.shihah@fsc.bu.edu.eg.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2024 Nov 27; Vol. 14 (51), pp. 37902-37910. Date of Electronic Publication: 2024 Nov 27 (Print Publication: 2024).
DOI: 10.1039/d4ra06101b
Abstrakt: Potassium-sulfur batteries (KSBs) have garnered immense attention as a high-energy, cost-effective energy storage system. Nevertheless, achieving optimal sulfur utilization and long-term cycling is the primary challenge. To address some of the different challenges of KSBs, a potassium-sulfur (K/S) battery cathode was fabricated using MoS 2 , SiC, and S (Mo@Si@S) in a fixed ratio. The powder was characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TGA), and energy dispersive X-ray (EDX) mapping analysis. Coin cells were fabricated using K metal as an anode, and three different electrolytes were used to determine the effect of electrolytes on electrochemical performance. The battery using the KPF 6 electrolyte displayed the best electrochemical performance with a 713 mA h g -1 capacity compared to the other two electrolytes. The structure and morphological evolution of pristine, charged, and discharged states were explored using XRD, SEM, and EDX mapping. The results showed that sulfur was successfully diffused within the cathode, and K was homogeneously distributed, suggesting the good performance of the modified electrode.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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