Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154235 - 154235
Published: July 26, 2024
Language: Английский
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(46)
Published: July 24, 2023
High entropy alloys (HEAs) are highly suitable candidate catalysts for oxygen evolution and reduction reactions (OER/ORR) as they offer numerous parameters optimizing the electronic structure catalytic sites. Herein, FeCoNiMoW HEA nanoparticles synthesized using a solution-based low-temperature approach. Such show high properties, subtle lattice distortions, modulated structure, leading to superior OER performance with an overpotential of 233 mV at 10 mA cm-2 276 100 . Density functional theory calculations reveal structures active sites optimized d-band center position that enables adsorption OOH* intermediates reduces Gibbs free energy barrier in process. Aqueous zinc-air batteries (ZABs) based on this demonstrate open circuit potential 1.59 V, peak power density 116.9 mW , specific capacity 857 mAh gZn-1, excellent stability over 660 h continuous charge-discharge cycles. Flexible solid ZABs also assembled tested, displaying different bending angles. This work shows significance 4d/5d metal-modulated ability improve OER/ORR, ZABs, beyond.
Language: Английский
Citations
100
InfoMat, Journal Year: 2023, Volume and Issue: 6(1)
Published: Nov. 27, 2023
Abstract Electrochemical water splitting represents a promising technology for green hydrogen production. To design advanced electrocatalysts, it is crucial to identify their active sites and interpret the relationship between structures performance. Materials extensively studied as electrocatalysts include noble‐metal‐based (e.g., Ru, Ir, Pt) non‐noble‐metal‐based 3d transition metals) compounds. Recently, advancements in characterization techniques theoretical calculations have revealed novel unusual sites. The present review highlights latest achievements discovery identification of various unconventional electrochemical splitting, with focus on state‐of‐the‐art strategies determining true establishing structure–activity relationships. Furthermore, we discuss remaining challenges future perspectives development next‐generation By presenting fresh perspective reaction involved this aims provide valuable guidance study industrial applications. image
Language: Английский
Citations
97
Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 941, P. 168994 - 168994
Published: Jan. 21, 2023
Language: Английский
Citations
46
Materials Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 7(20), P. 4833 - 4864
Published: Jan. 1, 2023
This review provides a comprehensive of recent advances in the design OER catalysts. Specifically, it focuses on kinetics and stability catalysts, catalytic mechanism innovative strategies.
Language: Английский
Citations
43
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)
Published: April 26, 2024
Metal defect engineering is a highly effective strategy for addressing the prevalent high overpotential issues associated with transition metal oxides functioning as dual-function commercial oxygen reduction reaction/oxygen evolution reaction catalysts increasing their activity and stability. However, formation energy of defects poses challenge to development strategies precisely control selectivity during formation. Here, density functional theory calculations are used demonstrate that altering pathway releases atoms chlorides, which effectively reduces defects. The on monometallic oxide surface (Mn, Fe, Co, Ni) selectively produced using chlorine plasma. characterization reveal catalytic enhanced owing electronic delocalization induced by defects, theoretical overpotential. Notably, ab initio molecular dynamics calculations, ex situ XPS, in ATR-SEIRAS suggest improve adsorption reactive species active sites enhance efficiency product desorption, thereby boosting performance.
Language: Английский
Citations
33
Small, Journal Year: 2024, Volume and Issue: 20(28)
Published: Feb. 8, 2024
Abstract Layered double hydroxides (LDHs), promising bifunctional electrocatalysts for overall water splitting, are hindered by their poor conductivity and sluggish electrochemical reaction kinetics. Herein, a hierarchical Cu‐doped NiCo LDH/NiCo alloy heterostructure with rich oxygen vacancies electronic modulation is tactfully designed. It extraordinarily effectively drives both the evolution (151 mV@10 mA cm −2 ) hydrogen (73 in an alkaline medium. As electrodes low cell voltage of 1.51 V at 10 remarkable long‐term stability 100 h achieved. The experimental theoretical results reveal that Cu doping recombination can improve kinetics LDH surface charge redistribution reduced Gibbs free energy barriers. This work provides new inspiration further design construction nonprecious metal‐based based on structure strategies.
Language: Английский
Citations
32
International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 58, P. 717 - 725
Published: Jan. 28, 2024
Language: Английский
Citations
24
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 7193 - 7208
Published: Jan. 1, 2024
FeCoNiPdWP exhibit excellent oxygen evolution and reduction reaction performance via all elements playing distinctive roles the switchable active sites in redox reactions, leading to robust zinc air batteries.
Language: Английский
Citations
20
International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 63, P. 918 - 936
Published: March 23, 2024
Language: Английский
Citations
18
Materials Advances, Journal Year: 2023, Volume and Issue: 4(5), P. 1226 - 1248
Published: Jan. 1, 2023
There are four functions of heteroatom doping on TMHs: (1) form a multi-component TMHs to adjust metal valence ratio; (2) increase active sites; (3) tune electronic states; (4) the interlayer spacing.
Language: Английский
Citations
29