Developing a bifunctional water splitting catalyst with high efficiency and low cost are crucial in the electrolysis water industry. Here, we report a rational design and simple preparation method of MoS -based bifunctional electrocatalyst on carbon cloth (CC). The optimized P-doped MoS @CoP/CC catalyst presents low overpotentials for the hydrogen (HER) and oxygen evolution reactions (OER) of 64 and 282 mV in alkaline solution as well as 72 mV HER overpotential in H SO at a current density of 10 mA cm . Furthermore, P-MoS @CoP/CC as a bifunctional catalyst delivered relatively low cell voltages of 1.83 and 1.97 V at high current densities of 500 and mA cm in 30 % KOH. The two-electrode system showed a remarkable stability for 30 h, even outperformed the benchmark RuO ||Pt/C catalyst. The excellent electrochemical performance can be credited to the unique microstructure, high surface area, and the synergy between metal species. This study presents a possible alternative for noble metal-based catalysts to overcome the challenges of industrial applications.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1002/cssc.202002873 | DOI Listing |
ACS Nano
January 2025
Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea.
With reduced dimensionality and a high surface area-to-volume ratio, two-dimensional (2D) semiconductors exhibit intriguing electronic properties that are exceptionally sensitive to surrounding environments, including directly interfacing gate dielectrics. These influences are tightly correlated to their inherent behavior, making it critical to examine when extrinsic charge carriers are intentionally introduced to the channel for complementary functionality. This study explores the physical origin of the competitive transition between intrinsic and extrinsic charge carrier conduction in extrinsically -doped MoS, highlighting the central role of interactions of the channel with amorphous gate dielectrics.
View Article and Find Full Text PDFLangmuir
October 2024
Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695581, India.
Surface coatings with enhanced mechanical stability, improved tribological performance, and superior anticorrosion performance find immense application in various industrial sectors. Herein, we report the development of multifunctional composite zinc phosphate coatings by the effective integration of a structurally and morphologically tuned P-doped MoS nanoparticle additive (3P-MoS) into the zinc phosphate matrix to offer attractive characteristics suitable for industrial applications. The integration of spherical nanoparticles as additive leads to the formation of homogeneous and compact coatings with a densely packed crystalline microstructure having enhanced microhardness, distinctive leaf-like morphology, and comparatively smooth topographical features.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2024
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China.
Rapid bubble release at high current densities results in the detachment of catalysts and performance degradation, posing a persistent challenge in actual alkaline water electrolysis (AWE). Here, hierarchical nanosheet structures (CoNC@P-MoS) are constructed, with P-doped MoS on the surface of Co,N-codoped carbon. It exhibits low hydrogen evolution reaction overpotentials of 30 and 354 mV at 10 and 1000 mA cm in 1 M KOH, respectively, with a small Tafel slope of 36 mV dec.
View Article and Find Full Text PDFNature
June 2024
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Optoelectronics, Shanxi University, Taiyuan, China.
Vertical three-dimensional integration of two-dimensional (2D) semiconductors holds great promise, as it offers the possibility to scale up logic layers in the z axis. Indeed, vertical complementary field-effect transistors (CFETs) built with such mixed-dimensional heterostructures, as well as hetero-2D layers with different carrier types, have been demonstrated recently. However, so far, the lack of a controllable doping scheme (especially p-doped WSe (refs.
View Article and Find Full Text PDFDalton Trans
March 2024
Northwest Institute for Non-ferrous Metal Research, Xi'an, 710016, P. R. China.
Molybdenum disulfide (MoS)-based electrocatalysts have been considered as promising alternatives to platinum for use in the hydrogen evolution reaction (HER). Developing MoS electrocatalysts with more active sites has been recognized as an efficient way to enhance the HER activity. Moreover, phase transition and heteroatom doping show great influence on the HER performance.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!