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

Unlocking Efficiency: Minimizing Energy Loss in Electrocatalysts for Water Splitting DOI Creative Commons
Wenxian Li, Yang Liu,

Ashraful Azam

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 25, 2024

Abstract Catalysts play a crucial role in water electrolysis by reducing the energy barriers for hydrogen and oxygen evolution reactions (HER OER). Research aims to enhance intrinsic activities of potential catalysts through material selection, microstructure design, various engineering techniques. However, consumption has often been overlooked due intricate interplay among catalyst microstructure, dimensionality, catalyst–electrolyte–gas dynamics, surface chemistry, electron transport within electrodes, transfer electrode components. Efficient development high‐current‐density applications is essential meet increasing demand green hydrogen. This involves transforming with high into electrodes capable sustaining current densities. review focuses on improvement strategies mass exchange, charge transfer, resistance decrease consumption. It bridge gap between laboratory‐developed, highly efficient industrial regarding structural catalyst‐electrode interplay, outlining roadmap hierarchically structured electrode‐based minimizing loss electrocatalysts splitting.

Language: Английский

Citations

40
Enhancing Ni/Co Activity by Neighboring Pt Atoms in NiCoP/MXene Electrocatalyst for Alkaline Hydrogen Evolution DOI

Hua‐Jie Niu,

Chuanxue Huang,

Tong Sun

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(20)

Published: Feb. 27, 2024

Density functional theory (DFT) calculations demonstrate neighboring Pt atoms can enhance the metal activity of NiCoP for hydrogen evolution reaction (HER). However, it remains a great challenge to link and NiCoP. Herein, we introduced curvature bowl-like structure construct Pt/NiCoP interface by adding minimal 1 ‰-molar-ratio Pt. The as-prepared sample only requires an overpotential 26.5 181.6 mV accordingly achieve current density 10 500 mA cm

Language: Английский

Citations

30
Spin effect in dual-atom catalysts for electrocatalysis DOI Creative Commons

Xiaoqin Xu,

Jingqi Guan

Chemical Science, Journal Year: 2024, Volume and Issue: 15(36), P. 14585 - 14607

Published: Jan. 1, 2024

The development of high-efficiency atomic-level catalysts for energy-conversion and -storage technologies is crucial to address energy shortages. spin states diatomic (DACs) are closely tied their catalytic activity. Adjusting the DACs' active centers can directly modify occupancy d-orbitals, thereby influencing bonding strength between metal sites intermediates as well transfer during electro reactions. Herein, we discuss various techniques characterizing atomic strategies modulating center states. Next, outline recent progress in study effects DACs oxygen reduction reaction (ORR), evolution (OER), hydrogen (HER), electrocatalytic nitrogen/nitrate (eNRR/NO

Language: Английский

Citations

29
Bimetallic nanoalloys planted on super-hydrophilic carbon nanocages featuring tip-intensified hydrogen evolution electrocatalysis DOI Creative Commons
Linjie Zhang, Haihui Hu,

Chen Sun

et al.

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

Published: Aug. 21, 2024

The insufficient availability and activity of interfacial water remain a major challenge for alkaline hydrogen evolution reaction (HER). Here, we propose an "on-site disruption near-site compensation" strategy to reform the bonding network via deliberate cation penetration catalyst support engineering. This concept is validated using tip-like bimetallic RuNi nanoalloys planted on super-hydrophilic high-curvature carbon nanocages (RuNi/NC). Theoretical simulations suggest that tip-induced localized concentration hydrated K+ facilitates optimization dynamics intermediate adsorption. In situ synchrotron X-ray spectroscopy endorses H* spillover-bridged Volmer‒Tafel mechanism synergistically relayed between Ru Ni. Consequently, RuNi/NC exhibits low overpotential 12 mV high durability 1600 h at 10 mA cm‒2 HER, demonstrates performance in both electrolysis chlor-alkali electrolysis. offers microscopic perspective design manipulation local structure toward enhanced HER kinetics. A with optimized H2 reported. designed shows catalytic by achieving 13.6-fold higher mass than Pt/C.

Language: Английский

Citations

29
Engineering active and robust alloy-based electrocatalyst by rapid Joule-heating toward ampere-level hydrogen evolution DOI Creative Commons
Zhan Zhao, Jianpeng Sun, Xiang Li

et al.

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

Published: Aug. 29, 2024

Rational design of bimetallic alloy is an effective way to improve the electrocatalytic activity and stability Mo-based cathode for ampere-level hydrogen evolution. However, it still critical realise desirable syntheses due wide reduction potentials between different metal elements uncontrollable nucleation processes. Herein, we propose a rapid Joule heating method effectively load RuMo onto MoOx matrix. As-prepared catalyst exhibits excellent (2000 h @ 1000 mA cm

Language: Английский

Citations

28
Precisely Control Relationship between Sulfur Vacancy and H Absorption for Boosting Hydrogen Evolution Reaction DOI Creative Commons
Jing Jin, Xinyao Wang, Yang Hu

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Jan. 2, 2024

Effective and robust catalyst is the core of water splitting to produce hydrogen. Here, we report an anionic etching method tailor sulfur vacancy (V

Language: Английский

Citations

26
Material Engineering Strategies for Efficient Hydrogen Evolution Reaction Catalysts DOI Creative Commons
Yue Luo, Yulong Zhang, Jiayi Zhu

et al.

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: May 15, 2024

Abstract Water electrolysis, a key enabler of hydrogen energy production, presents significant potential as strategy for achieving net‐zero emissions. However, the widespread deployment water electrolysis is currently limited by high‐cost and scarce noble metal electrocatalysts in evolution reaction (HER). Given this challenge, design synthesis cost‐effective high‐performance alternative catalysts have become research focus, which necessitates insightful understandings HER fundamentals material engineering strategies. Distinct from typical reviews that concentrate only on summary recent catalyst materials, review article shifts focus to strategies developing efficient catalysts. In‐depth analysis approaches catalysts, such doping, vacancy defect creation, phase engineering, metal‐support are illustrated along with cases. A special emphasis placed designing metal‐free brief discussion advancements electrocatalytic water‐splitting technology. The also delves into important descriptors, reliable evaluation parameters characterization techniques, aiming link fundamental mechanisms its catalytic performance. In conclusion, it explores future trends integrating theoretical, experimental industrial perspectives, while acknowledging challenges remain.

Language: Английский

Citations

20
Oxophilic Tm‐Sites in MoS2 Trigger Thermodynamic Spontaneous Water Dissociation for Enhanced Hydrogen Evolution DOI
Meng Li,

Xuan Wang,

Han Du

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 11, 2024

Abstract 2D MoS 2 is acknowledged as a potential alternative to Pt‐based catalysts for hydrogen evolution reaction (HER) due its suitable * H adsorption energy. However, the weak water capacity of in an alkaline solution limits performance improvement toward HER. Herein, novel rare‐earth Tm single atoms decorated (Tm SAs‐MoS ) catalyst proposed, and key role SAs on enhanced HER identified. It verified that Tm‐site contributes asymmetric [Mo‐S‐Tm] unit site, which serves electron donor disturb electronic state accelerate accumulation at surrounding Mo‐S site. The obtained exhibits significantly improved activity with low overpotential 80 mV 10 mA cm −2 , robust stability good selectivity compared pure most ‐based catalysts. In situ Raman theoretical calculations prove oxophilic sites improves migration thermodynamic spontaneous dissociation interfacial O molecules during by Tm‐4f‐OH orbital overlap. Such [Tm‐S‐Mo] site allows optimal G *H location turn reaches apex volcano plot. This work expected open up new avenues design provide valuable understanding rare earth mechanisms.

Language: Английский

Citations

20
Rational design of local microenvironment for electrocatalytic water splitting DOI
Xiang Li,

Wangchuan Zhu,

Yanqun Zhang

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(14), P. 4080 - 4106

Published: Jan. 1, 2024

This summary describes the effects of wettability, local pH, interfacial water structure, and electrolyte composition on interface reactant compositions, key intermediate adsorption, reaction kinetics.

Language: Английский

Citations

19
Insights into the pH effect on hydrogen electrocatalysis DOI
Wen‐Gang Cui,

Fan Gao,

Guoquan Na

et al.

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

Published: Jan. 1, 2024

This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.

Language: Английский

Citations

19