Document Type
Article
Publication Date
4-17-2024
Abstract
Developing cost-effective, efficient, and highly durable catalysts to replace expensive noble metal electrodes in electrocatalytic water-splitting applications is crucial. A particularly intriguing and challenging strategy in this regard involves the deliberate design of nanocomposites comprising multiple components with distinct functionalities. Here, we present the synthesis of a robustly catalytic and exceptionally durable electrocatalyst, phosphorus-incorporated cobalt molybdenum sulphide (P-CoMoS), grown on carbon cloth (CC). This hybrid material demonstrates remarkable activity for both hydrogen and oxygen evolution reactions across a wide pH range (1−14), while maintaining extremely high stability (approximately 90% retention of the initial current density) after 24 hours of electrolysis. Notably, when utilized as both cathode and anode for overall water splitting, P-CoMoS/CC achieves a remarkably low cell voltage of 1.54 V to reach a current density of 10 mA cm−2, with the hybrid material exhibiting long-term stability (89.8% activity retention after 100 hours). The exceptional performance in overall water splitting, compared to electrolysers employing noble-metal-based catalysts such as Pt/C and RuO2, positions P-CoMoS as one of the most efficient earth-abundant catalysts for water splitting. The incorporation of phosphorus has been demonstrated to be crucial for enhancing the charge-transfer properties and catalytic durability of the P-CoMoS/CC catalyst.
Recommended Citation
Himanshi, Fnu, "Amorphous Phosphorus-Incorporated Cobalt Molybdenum Sulphide on Carbon Cloth: An Efficient and Stable Electrocatalyst for Enhanced Overall Water Splitting Over Entire pH Values" (2024). Posters. 59.
https://digitalcommons.pittstate.edu/posters_2024/59
