1. Revolutionizing energy storage and electro-catalysis: unleashing electrode power with novel BaS3:La2S3:Ho2S3 synthesized from single-source precursors for enhanced electrochemical functionality.
- Author
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Jaffri, Shaan Bibi, Ahmad, Khuram Shahzad, Al-Hawadi, Jehad S., Makawana, Bhumikaben, Gupta, Ram K., Ashraf, Ghulam Abbas, and Okla, Mohammad K.
- Abstract
Electrochemical energy storage has utility in wide range of systems, therefore scientific community and energy stakeholders have been significantly focusing especially on it. By utilizing the novel BaS
3 :La2 S3 :Ho2 S3 semiconductor, an alkaline earth-lanthanide composite chalcogenide (AE-LCC), which is developed by chelating with the diethyldithiocarbamate ligand, the current work, for the first time, seeks to enhance the performance of charge retaining devices in addition to electro-catalysis. This photo-active material exhibits exceptional optical properties with a band gap of 3.95 eV and heterogeneous crystallographic modes with a median crystallite size of 17.78 nm, due to its sustainable manufacturing process. Furthermore, infrared spectroscopy was used to identify metallic sulfide connections, which vary between 545 and 887 cm−1 . Differently shaped particles that fused into a rod-like structure showed a higher volume-surface area ratio at multiple locations. The electrochemical performance of the BaS3 :La2 S3 :Ho2 S3 AE-LCC was assessed using a conventional three-electrode configuration with an initial electrolyte of 1 M KOH. BaS3 :La2 S3 :Ho2 S3 AE-LCC exhibits excellent specific capacitance of as high as 779 F g−1 and a power density of 10,145.28 W kg−1 , making it an excellent electrode material for power storage applications. This remarkable electrochemical performance was further substantiated by comparable series resistance (Rs ) = 1.25 Ω. The electrode generated an OER overpotential and a matching Tafel slope of 417 mV and 113 mV/dec by electro-catalysis. Conversely, the Tafel slope of HER activity was 310 mV/dec, and its overpotential was 233 mV. Highlights: Novel BaS3 :La2 S3 :Ho2 S3 semiconducting chalcogenide. Qualities with potential applications in the energy industry. Sustainable electrode adorned with BaS3 :La2 S3 :Ho2 S3 . 10,145.28 W kg−1 of specific power density. Excellent energy storage with a specific capacitance of 779 F g−1 . Commendably lower OER and HER overpotential and Tafel slopes. [ABSTRACT FROM AUTHOR]- Published
- 2025
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