Greatly Boosting Seawater Hydrogen Evolution by Surface Amorphization and Morphology Engineering on MoO2/Ni3(PO4)2 DOI

Jianxi Lu,

Songbo Chen,

Yuling Zhuo

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(51)

Published: Sept. 8, 2023

Abstract Hydrogen production through seawater electrolysis faces several challenges, one of which involves the development electrocatalysts with high catalytic performance. Here, surface amorphization and morphology engineering are combined to design a novel electrocatalyst for highly‐efficient hydrogen evolution reaction (HER). The surface‐amorphized MoO 2 /Ni 3 (PO 4 ) microcolumns supported on nickel foam (SA‐MoO /NF) display remarkable performance low overpotentials 34 46 mV at current density 10 mA cm −2 in 1 m KOH alkaline seawater, respectively. In addition, cell (AEC) integrated SA‐MoO /NF as cathode Ni anode achieves 100 1.87 V 6 60 °C, superior that industrial NiMo electrode (2.05 V). DFT calculations demonstrate amorphous layer (MoO x improves adsorption energy sample reduces barrier water dissociation. It is found substantial improvement stems from synergistic effect between unique microcolumn morphology. These findings may provide insights into combining strategies enhance pave way highly efficient HER electrocatalysts.

Language: Английский

Reversed Spillover Effect Activated by Pt Atom Dimers Boosts Alkaline Hydrogen Evolution Reaction DOI

Zhiping Lin,

Zongpeng Wang,

Junjie Gong

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(45)

Published: Aug. 30, 2023

Abstract The hydrogen spillover effect has garnered considerable attention as a promising avenue to enhance the activity of evolution reaction (HER) in metal‐support compound materials. Herein, Pt atom dimers on NiOOH support are successfully synthesized with reversed effect, demonstrating much better alkaline HER than single atoms and clusters. Atomic electronic structure characterizations unequivocally verify anchoring through Pt─O bonds, thus obtaining enhanced effect. Theoretical experimental results indicate that exhibits pronounced water dissociation capability, while dimers, comparison clusters, demonstrate superior desorption ability. leads remarkable solutions, evidenced by an ultra‐small overpotential 13 mV at 10 mA cm −2 . These findings not only provide insights into potential use for HER, but also shed light designing high‐performance catalysts.

Language: Английский

Citations

108
Sustainable conversion of alkaline nitrate to ammonia at activities greater than 2 A cm−2 DOI Creative Commons
Wanru Liao, Jun Wang,

Ganghai Ni

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 10, 2024

Abstract Nitrate (NO 3 ‒ ) pollution poses significant threats to water quality and global nitrogen cycles. Alkaline electrocatalytic NO reduction reaction RR) emerges as an attractive route for enabling removal sustainable ammonia (NH synthesis. However, it suffers from insufficient proton (H + supply in high pH conditions, restricting -to-NH activity. Herein, we propose a halogen-mediated H feeding strategy enhance the alkaline RR performance. Our platform achieves near-100% NH Faradaic efficiency (pH = 14) with current density of 2 A cm –2 enables over 99% – conversion efficiency. We also convert high-purity 4 Cl near-unity efficiency, suggesting practical approach valorizing pollutants into valuable products. Theoretical simulations situ experiments reveal that Cl-coordination endows shifted d -band center Pd atoms construct local -abundant environments, through arousing dangling O-H dissociation fast *H desorption, *NO intermediate hydrogenation finally effective conversion.

Language: Английский

Citations

85
Constructing Interfacial Oxygen Vacancy and Ruthenium Lewis Acid–Base Pairs to Boost the Alkaline Hydrogen Evolution Reaction Kinetics DOI
Qing Qin, Haeseong Jang, Xiaoli Jiang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(3)

Published: Dec. 8, 2023

Simultaneous optimization of the energy level water dissociation, hydrogen and hydroxide desorption is key to achieving fast kinetics for alkaline evolution reaction (HER). Herein, well-dispersed Ru clusters on surface amorphous/crystalline CeO

Language: Английский

Citations

60
Stability of electrocatalytic OER: from principle to application DOI
Huangjingwei Li,

Yu Lin,

Junyuan Duan

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

A comprehensive summary of the stability electrocatalytic OER will provide insight into electrocatalyst design and device optimization for industrial applications.

Language: Английский

Citations

60
Design strategies of ruthenium‐based materials toward alkaline hydrogen evolution reaction DOI Creative Commons

Liqiang Hou,

Haeseong Jang,

Xiumin Gu

et al.

EcoEnergy, Journal Year: 2023, Volume and Issue: 1(1), P. 16 - 44

Published: Sept. 1, 2023

Abstract Hydrogen produced from electrocatalytic water splitting means is deemed to be a promising route construct low‐carbon, eco‐friendly, and high‐efficiency modern energy system. The design construction of highly active catalysts with affordable prices toward alkaline hydrogen evolution reaction (HER) are effective in accelerating the overall water‐splitting process. So far, ruthenium (Ru) based deliver comparable or even superior catalytic performance relative platinum (Pt)/C benchmark. Combined their price advantage, Ru‐based undoubtedly considered as one perfect alternatives Pt HER. Extensive efforts have been made reasonably synthesize Ru‐related materials, but careful insight into material engineering strategies induced effects remain its infancy. In this review, recent progress on for improving activity catalysts, including electronic regulation, geometric modulation, local structure alteration, self‐optimization strategies, structure–activity relationship comprehensively summarized. Furthermore, challenges perspectives future studies electrocatalysts HER also proposed.

Language: Английский

Citations

57
Work-function-induced electron rearrangement of in-plane FeP@CoP heterojunction enhances all pH range and alkaline seawater hydrogen evolution reaction DOI
Ke Zhang, Jun Jia,

Endong Yang

et al.

Nano Energy, Journal Year: 2023, Volume and Issue: 114, P. 108601 - 108601

Published: June 12, 2023

Language: Английский

Citations

53
Amorphous/Crystalline Rh(OH)3/CoP Heterostructure with Hydrophilicity/ Aerophobicity Feature for All‐pH Hydrogen Evolution Reactions DOI Open Access

Minghui Xing,

Shaoke Zhu,

Xiaofei Zeng

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(44)

Published: Oct. 3, 2023

Abstract Interface engineering shows distinct advantages in the electrocatalytic hydrogen evolution reaction (HER) due to unique structures that can be realized. The interfaces formed by amorphous materials often exhibit special properties are beneficial for HER. Herein, an amorphous/crystalline Rh(OH) 3 /CoP heterostructure is constructed, which exhibits outstanding HER performance all‐pH range. It only needs overpotentials of 13, 12, and 25 mV drive a current density 10 mA cm −2 alkaline, acidic, neutral media, respectively, ranks as one best electrocatalysts reported recently. activities range attributed /CoP, possesses hydrophilic/aerophobic features thataccelerate mass transfer, provide abundant exposed active sites appropriate defects. Importantly, attenuation mechanism catalyst also revealed, i.e., formation Rh aggregations leads poor contact efficacy loss interface In short, this work provides new idea using design electrocatalysts, not HER, but oxygen reduction reactions.

Language: Английский

Citations

50
Nanocurvature-induced field effects enable control over the activity of single-atom electrocatalysts DOI Creative Commons
B.X. Wang, Meng Wang, Ziting Fan

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 26, 2024

Tuning interfacial electric fields provides a powerful means to control electrocatalyst activity. Importantly, can modify adsorbate binding energies based on their polarizability and dipole moment, hence operate independently of scaling relations that fundamentally limit performance. However, implementation such strategy remains challenging because typical methods the field non-uniformly affects only minority active sites. Here we discover uniformly tunable modulation be achieved using model system single-atom catalysts (SACs). These consist M-N

Language: Английский

Citations

49
Manipulating the Microenvironment of Single Atoms by Switching Support Crystallinity for Industrial Hydrogen Evolution DOI
Luqi Wang, Mingyue Ma,

Chenchen Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(7)

Published: Dec. 28, 2023

Abstract Modulating the microenvironment of single‐atom catalysts (SACs) is critical to optimizing catalytic activity. Herein, we innovatively propose a strategy improve local reaction environment Ru single atoms by precisely switching crystallinity support from high crystalline and low crystalline, which significantly improves hydrogen evolution (HER) The catalyst anchored on low‐crystalline nickel hydroxide (Ru−LC−Ni(OH) 2 ) reconstructs distribution balance interfacial ions due activation effect metal dangling bonds support. Single‐site with oxidation state induces aggregation hydronium (H 3 O + ), leading formation acidic in alkaline media, breaking pH‐dependent HER As comparison, high‐crystalline (Ru−HC−Ni(OH) exhibits sluggish Volmer step conventional environment. expected, Ru−LC−Ni(OH) requires overpotentials 9 136 mV at 10 1000 mA cm −2 conditions operates stably 500 for h an seawater anion exchange membrane (AEM) electrolyzer. This study provides new perspective constructing highly active electrocatalysts.

Language: Английский

Citations

46
Recent advanced strategies for bimetallenes toward electrocatalytic energy conversion reactions DOI

Soheila Sanati,

Qiyou Wang, Reza Abazari

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(23), P. 3129 - 3137

Published: Jan. 1, 2024

Designing low-dimensional nanomaterials is vital to address the energy and environmental crisis by means of electrocatalytic conversion reactions. Bimetallenes, as an emerging class 2D materials, present promise for By leveraging atomically thin layers, bimetallenes unsaturated surface coordination, high specific area conductivity, which are all indispensable features heterogeneous electrochemical However, intrinsic activity stability needs be improved further bimetallene electrocatalysts, due higher demands practical applications. Recently, many strategies have been developed optimize chemical or electronic structure accommodate transfer reactants, adsorption desorption intermediates, dissociation products. Considering that most such work focuses on adjusting structure, this review offers in-depth insight into recent representative optimizing mainly including alloying, strain effects, ligand defects heteroatom doping. Moreover, summarizing performance optimized using various strategies, we provide a understand structure-property relationships. In addition, future prospects challenges discussed development electrocatalysts.

Language: Английский

Citations

43