2023 Vol. 2, No. 2
Multi-principal elements alloys provide a vast compositional space for the development of potential antibacterial coating materials. Different from traditional sequential trial-and-error methods, this work utilizes combinatorial method to prepare and characterize FeCoCr-Ag multi-principal component alloy system within material library. The relationship between composition and antibacterial performance is established, the component dependence of antibacterial performance is revealed. Based on high-throughput methods, antibacterial materials with the best performance can be quickly screened. This work not only shows the potential of multi-principal elements alloy as a high-performance antibacterial alloy coating, but also indicates that the combinatorial approach could accelerate the development of functional materials that satisfy required combination of optimized properties.
DOI: 10.1088/2752-5724/acbd63
Water splitting is regarded as the most prospective methods of generating green hydrogen. Switching electrolytes from acidic to non-acidic ones will enable the use of noble-metal-free catalysts and mitigate material corrosion, lowering the capital cost of water electrolyzers and improving their operational stability. MoS2-based materials have been considered prospective catalysts to substitute Pt in acid, whose further development requires clarification of the existing challenges. To mitigate the disparity, we systematically overview MoS2-based electrocatalysts for non-acidic HER, covering catalytic mechanisms, modulation strategies, materials development, current challenges, research progress, and perspectives. We try to distinguish the distinct HER mechanisms in different pH conditions to establish the explicit structure-HER activity-pH relationships. More importantly, the gradually clarified non-acidic HER behavior is beneficial to drive practical water electrolysis applications, where the harsh water electrolysis condition may induce changes in electrocatalysts and electrolytes. This work will contribute to the rational design of MoS2-based materials for high-performance HER in non-acidic conditions.
DOI: 10.1088/2752-5724/acc51d