Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Elucidation of the key mechanism inactive Pt catalyst for hydrogen production in alkaline media and description two control factors catalytic activity a pseudo-binary Pt–M catalyst.
Language: Английский
Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(9), P. 3170 - 3214
Published: Jan. 1, 2023
An exclusive review focusing on catalysts exhibiting the dinuclear metal synergistic catalysis (DMSC) effect for energy conversion reactions is presented.
Language: Английский
Citations
80
Small, Journal Year: 2023, Volume and Issue: 19(35)
Published: April 26, 2023
Abstract Hydrogen energy is regarded as the ultimate source for future human society, and preparation of hydrogen from water electrolysis recognized most ideal way. One key factors to achieve large‐scale production by splitting availability highly active stable electrocatalysts. Although non‐precious metal electrocatalysts have made great strides in recent years, best evolution reaction (HER) are still based on noble metals. Therefore, it particularly important improve overall activity while reducing metals load. Alloying strategies can shoulder burden optimizing cost improving performance. With this mind, work application metal‐based alloy field summarized. In review, first, mechanism HER described; then, current development synthesis methods presented; finally, an example analysis practical studies presented. addition, at end prospects, opportunities, challenges facing tried discuss.
Language: Английский
Citations
72
Nanoscale, Journal Year: 2023, Volume and Issue: 15(28), P. 11759 - 11776
Published: Jan. 1, 2023
Water electro-splitting driven by renewable energy is significant in conversion for the development of hydrogen sources. The evolution reaction (HER) directly generating products occurs cathode catalysis. Over years, progress has been made to boost HER efficiency exploratively designing highly active and economical Pt-based electrocatalysts. However, there are still some urgent problems be solved catalysts more alkaline electrolytes, such as slow kinetics caused additional hydrolysis dissociation steps, which greatly hinders practical application. This review systematically summarizes several strategies optimizing provides direct guidelines design Specifically, intrinsic activity water electrolysis can boosted accelerating dissociation, binding or modulating spatial dimensions electrocatalyst based on mechanism. Finally, we prospect challenges novel electrocatalysts, including site study, mechanism exploration extensible catalyst preparation technologies.
Language: Английский
Citations
60
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(50)
Published: Aug. 2, 2023
Abstract Pt‐based nanocrystals with tunable electronic structure and optimized atom efficiency are essential for boosting the hydrogen evolution reaction (HER) performance further industrial application. However, synthesis of uniform ordered is still a challenge due to uncontrollable size growth metal particles, restricting active sites toward desired catalytic activity. Herein, ultrafine bimetal PtMo on N‐doped carbon (PtMo‐NC) through an anchoring‐sites engineering strategy reported, in which N‐rich can provide abundant anchor atoms suppress over aggregation. The PtMo‐NC catalyst exhibits superior HER both alkaline acidic conditions, delivering smaller overpotential (80 mV 63 mV) at current density 100 mA cm −2 media. Theoretical calculations reveal that introduction Mo into Pt reduce energy barrier water molecule dissociation optimize H intermediate absorption strength sites, thus performance. This study offers universal design nanocatalysts achieve high‐efficiency electrocatalysis.
Language: Английский
Citations
54
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(39)
Published: July 28, 2023
Rational design of Pt single-atom catalysts provides a promising strategy to significantly improve the electrocatalytic activity for hydrogen evolution reaction. In this work, we presented novel and efficient utilizing low electron-density region substrate effectively trap confine high metal atoms. The catalyst supported by nickel selenide with rich vacancies was prepared via hydrothermal-impregnation stepwise approach. Through experimental testation DFT theoretical calculation, confirm that single atoms are well distributed at cationic loading amount 3.2 wt. %. Moreover, atomic combined electronegative Se form Pt-Se bond as "bridge" between fast electron translation. This shows an extremely overpotential 45 mV 10 mA cm-2 excellent stability over 120 h. Furthermore, SACs exhibits long-term practical application, which maintains current density 390 80 h retention 99 work points direction designing catalytic advanced green energy conversion technologies.
Language: Английский
Citations
53
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(41)
Published: Aug. 27, 2023
Abstract The design of cheap, efficient, and durable electrocatalysts for high‐throughput H 2 production is critical to give impetus hydrogen from fundamental practical industrial applications. Here, a hierarchical heterostructure evolution reaction (HER) electrocatalyst (MoNi/NiMoO x ) with 0D MoNi nanoalloys nanoparticles embedded on well‐assembled 1D porous NiMoO microrods in situ grown 3D nickel foam (NF) successfully constructed. synergetic effect different building units the unique structure endows MoNi/NiMoO composites highly active heterogeneous interface low water dissociation energy (Δ G diss = −1.2 eV) optimized adsorption ability H* −0.01 eV), fast electron/mass transport, strong catalyst‐support binding force. As result, optimal exhibits an ampere‐level current density 1.9 A cm −2 at ultralow overpotential 139 mV 1.0 м KOH 289 PBS solution, respectively. Particularly, scaled‐up electrodes 10 × membrane electrode assembly (MEA) electrolyzer reach high rate 12.12 L h −1 (12.12 times than that commercial NF) exhibit ultralong stability 1600 h, verifying its huge potential production.
Language: Английский
Citations
46
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216190 - 216190
Published: Sept. 5, 2024
Language: Английский
Citations
18
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 662, P. 183 - 191
Published: Feb. 9, 2024
Language: Английский
Citations
17
Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(8)
Published: Dec. 9, 2022
Abstract Platinum (Pt) remains the benchmark electrocatalyst for alkaline hydrogen evolution reaction (HER), but its industry‐scale production is severely hampered by lack of well‐designed durable Pt‐based materials that can operate at ampere‐level current densities. Herein, based on original oxide layer and parallel convex structure surface nickel foam (NF), a 3D quasi‐parallel architecture consisting dense Pt nanoparticles (NPs) immobilized oxygen vacancy‐rich NiO x heterojunctions (Pt/NiO ‐O V ) as an HER catalyst developed. A combined experimental theoretical studies manifest anchoring NPs leads to electron‐rich species with altered density states (DOS) distribution, which efficiently optimize d‐band center adsorption intermediates well enhance water dissociation ability. The as‐prepared exhibits extraordinary performance low overpotential 19.4 mV 10 mA cm −2 , mass activity 16.3‐fold higher than 20% Pt/C, long durability more 100 h 1000 . Furthermore, assembled electrolyzer NiFe‐layered double hydroxide requires extremely voltage 1.776 attain stably 400 h, rarely achieved.
Language: Английский
Citations
55
Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(49), P. 20477 - 20487
Published: Nov. 22, 2023
Ternary Pt-based structures are a positive progress in addressing the disadvantages of monometallic and bimetallic alloys for electrochemical oxidation process simple alcohols, which is vital half-reaction fuel cell technologies. We herein report facile NaBH4-assisted ethylene glycol reduction fabricating series nanosized PtRuNi ternary to explore relationship between physicochemical properties electrocatalytic behaviors acidic methanol reaction (MOR). Owing balance lattice strain synergistic effects, Pt60Ru20Ni20/C electrocatalyst shows highest MOR efficiency with mass activity/specific activity 844.48 mA mgMetal-1/1.93 cm-2, being 1.94 2.38 times increase compared those PtRu catalyst, respectively. Also, catalyst possesses superior CO-tolerance durability strongly electrolytes. This work suggests that optimizing surface electronic effects can boost overall multicomponent materials, help further develop next-generation catalysts energy conversion-related
Language: Английский
Citations
32