Double Metal-Atoms Optimized Ni3s2 Bifunctional Electrocatalysts for Efficient Hydrogen Production and Overall Water Splitting Under Alkaline Conditions DOI
Junjie Huang, Yupeng Xing, Baojie Zhang

et al.

Published: Jan. 1, 2024

Developing cost-effective and high-performance bifunctional electrocatalysts as substitutes for precious metals is a major challenge in water splitting research. Recently, Ni3S2 has been the subject of extensive research an efficient non-precious metal catalyst. A new atomic modification method was introduced to improve surface morphology Ni3S2. Multilayer theory structured Ni3S2-Fe-Ni catalysts were obtained through utilization adsorption intermediates theory. Doping Fe/Ni by electrodeposition increased number active sites intrinsic conductivity Elemental analysis revealed multilayer structure consisting Ni3S2, NiS, FeS2. Additionally, Auger peaks shifted lower binding energy. The electrochemical performance catalyst impressive due optimization its structure, overpotential HER OER are only 83 190 mV Notably, at higher current densities 100 mA cm-2, 339 365 mV. As electrocatalyst, total voltage 1.55V. catalysis remained nearly unchanged after 48 h stability testing. Finally, Density functional (DFT) calculations that potential barriers each reaction step evenly distributed, optimizing with iron nickel atoms reduces energy during process, improving OER/HER performance.

Language: Английский

Corrosion Resistant Multilayered Electrode Comprising Ni3N Nanoarray Overcoated with NiFe‐Phytate Complex for Boosted Oxygen Evolution in Seawater Electrolysis DOI
Ping Li,

Shien Zhao,

Yuqi Huang

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(8)

Published: Dec. 17, 2023

Abstract Engineering high‐performance oxygen evolution reaction (OER) anode material with high activity, selectivity, and strong robustness against chloride corrosion is critical to advance seawater electrolysis for large‐scale production of H 2 , yet a daunting challenge. Herein it reported the first time, engineer multilayered electrode consisting Ni foam‐supported 3 N porous nanosheet array decorated NiFe‐phytate coordination complex overlayer (NF/Ni N@NiFe‐PA) via facile interfacial assembly, remarkably boosted sustained OER in alkaline electrolysis. Benefitting from regulated electronic state by synergism between Fe species, proton‐coupled electron transfer accelerating proton movement aid incorporated phytic acid as relay, promoted mass rendered unique superhydrophilic superaerophobic property, resulting NF/Ni N@NiFe‐PA demonstrates prominent activity seawater. Impressively, integrating anticorrosive NiFe‐PA situ generated NiFeOOH can collaboratively contribute repelling, leading exceptional resistance electrode. This work affords novel paradigm active corrosion‐resistive selective saline water simultaneous geometric structural manipulation.

Language: Английский

Citations

41
Activating Interfacial Electron Redistribution in Lattice‐Matched Biphasic Ni3N‐Co3N for Energy‐Efficient Electrocatalytic Hydrogen Production via Coupled Hydrazine Degradation DOI
Xiaoli Wang, Huashuai Hu, Xiaohui Yan

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(19)

Published: March 11, 2024

Abstract The development of high‐purity and high‐energy‐density green hydrogen through water electrolysis holds immense promise, but issues such as electrocatalyst costs power consumption have hampered its practical application. In this study, we present a promising solution to these challenges the use high‐performance bifunctional for energy‐efficient production via coupled hydrazine degradation. biphasic metal nitrides with highly lattice‐matched structures are deliberately constructed, forming an enhanced local electric field between electron‐rich Ni 3 N electron‐deficient Co N. Additionally, Mn is introduced engine further activate electron redistribution. Our Mn@Ni N‐Co N/NF achieves industrial‐grade current densities 500 mA cm −2 at 0.49 V without degradation, saving least 53.3 % energy compared conventional alkaline electrolysis. This work will stimulate nitride electrocatalysts also provide new perspectives on low‐cost environmental protection.

Language: Английский

Citations

17
Enhanced Cooperative Generalized Compressive Strain and Electronic Structure Engineering in W‐Ni3N for Efficient Hydrazine Oxidation Facilitating H2 Production DOI Open Access
Hongye Qin,

Guangliang Lin,

Jinyang Zhang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract As promising bifunctional electrocatalysts, transition metal nitrides are expected to achieve an efficient hydrazine oxidation reaction (HzOR) by fine‐tuning electronic structure via strain engineering, thereby facilitating hydrogen production. However, understanding the correlation between strain‐induced atomic microenvironments and reactivity remains challenging. Herein, a generalized compressive strained W‐Ni 3 N catalyst is developed create surface with enriched states that optimize intermediate binding activate both water 2 H 4 . Multi‐dimensional characterizations reveal nearly linear evolution (HER) activity d‐band center of under state. Theoretically, enhances electron transfer capability at surface, increasing donation into antibonding orbitals adsorbed species, which accelerates HER HzOR. Leveraging modified from W incorporation, catalysts demonstrate outstanding performance, achieving overpotentials 46 mV for 10 mA cm −2 81 HzOR 100 Furthermore, achieves overall splitting low cell voltage 0.185 V 50 , maintaining stability ≈450 h. This work provides new insights dual engineering in design advanced catalysts.

Language: Английский

Citations

2
Multiscale Structural Engineering of a Multilayered Nanoarray Electrode Realizing Boosted and Sustained Oxygen Evolution Catalysis in Seawater Electrolysis DOI
Ping Li,

Shien Zhao,

Yuqi Huang

et al.

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(23), P. 15360 - 15374

Published: Nov. 13, 2023

Seawater electrolysis is promising for large-scale H2 production, yet it bottlenecked by the lack of a high-performing anode with favorable activity, desirable selectivity toward oxygen evolution reaction (OER), and strong resistance against chloride corrosion. Herein, we propose multiscale structural engineering strategy to construct multilayered heterostructured OER electrode an amorphous FeOOH overlayer coated on crystalline Mo-doped Co0.85Se nanosheet array aligned 3D macroporous Ni foam. In such designed NF/(CoMo)0.85Se@FeOOH electrode, integration aliovalent conductive active nonconductive into crystalline–amorphous heterostructure, unique hierarchical sheet-on-sheet nanoarray configuration, can not only give rise proliferated catalytic sites enhanced intrinsic activity via electronic manipulation but also boost mass transfer account fascinating surface superhydrophilic superaerophobic features. Impressively, architecture comprising inherently anticorrosive (CoMo)0.85Se core shell, together in situ formed transition metal (oxy)hydroxide outmost layer enriched polyatomic anions (MoOxn– SeOxn–), collectively contribute commendable mechanical stability chloride-corrosion during harsh seawater oxidation. This work highlights potent paradigm high-efficiency, corrosion-resistive, OER-selective stable ingenious systematical engineering.

Language: Английский

Citations

29
Electronic Structure Modulation Via Iron-Incorporated NiO to Boost Urea Oxidation/Oxygen Evolution Reaction DOI

Guangyuan He,

Xiong-Fei He,

Hui-Ying Mu

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(17), P. 7937 - 7945

Published: April 17, 2024

The urea-assisted water splitting not only enables a reduction in energy consumption during hydrogen production but also addresses the issue of environmental pollution caused by urea. Doping heterogeneous atoms Ni-based electrocatalysts is considered an efficient means for regulating electronic structure Ni sites catalytic processes. However, current methodologies synthesizing heteroatom-doped exhibit certain limitations, including intricate experimental procedures, prolonged reaction durations, and low product yield. Herein, Fe-doped NiO were successfully synthesized using rapid facile solution combustion method, enabling synthesis 1.1107 g within mere 5 min. incorporation iron facilitates modulation environment around atoms, generating substantial decrease Gibbs free intermediate species Fe-NiO catalyst. This modification promotes cleavage C-N bonds consequently enhances performance UOR. Benefiting from tunability active its electron transfer, needs 1.334 V to achieve 50 mA cm

Language: Английский

Citations

7
Activating Interfacial Electron Redistribution in Lattice‐Matched Biphasic Ni3N‐Co3N for Energy‐Efficient Electrocatalytic Hydrogen Production via Coupled Hydrazine Degradation DOI
Xiaoli Wang, Huashuai Hu, Xiaohui Yan

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(19)

Published: March 11, 2024

Abstract The development of high‐purity and high‐energy‐density green hydrogen through water electrolysis holds immense promise, but issues such as electrocatalyst costs power consumption have hampered its practical application. In this study, we present a promising solution to these challenges the use high‐performance bifunctional for energy‐efficient production via coupled hydrazine degradation. biphasic metal nitrides with highly lattice‐matched structures are deliberately constructed, forming an enhanced local electric field between electron‐rich Ni 3 N electron‐deficient Co N. Additionally, Mn is introduced engine further activate electron redistribution. Our Mn@Ni N‐Co N/NF achieves industrial‐grade current densities 500 mA cm −2 at 0.49 V without degradation, saving least 53.3 % energy compared conventional alkaline electrolysis. This work will stimulate nitride electrocatalysts also provide new perspectives on low‐cost environmental protection.

Language: Английский

Citations

5
Triphenylamine-Substituted Ni(II) Porphyrins for Urea Electro-oxidation DOI
Shun Lu, Xingqun Zheng, Yi Zeng

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Porphyrin-based molecular catalysts possess a typical aromatic macrocyclic structure regarding their metal centers and coordination frameworks, allowing for the development of promising electrocatalysts through precise selection porphyrin ligand. However, reports on metalloporphyrins as electrocatalytic urea oxidation reaction (UOR) remain scarce. With these considerations in mind, triphenylamine-Ni(II) (NiPor-TPA) was synthesized solvothermal approach from 5,10,15,20-tetrakis [4-(diphenylamino)phenyl]porphyrin nickel(II) acetate this work. Experimental results reveal that introduction Ni species can serve active sites activate efficiently, thus prepared deliver better activity than metal-free TPA. The NiPor-TPA electrode delivers lowest potential 1.34 V versus reversible hydrogen (RHE) at 10 mA cm

Language: Английский

Citations

5
Binary Ni/NiO–NiWO4 with highly activity and durability for the enhanced oxidation of urea DOI
Shuai Wu, Yujuan Zhang, Xiutang Zhang

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 85, P. 261 - 269

Published: Aug. 24, 2024

Language: Английский

Citations

4
Engineering of novel vanadium-doped [email protected] heterostructure for enhancing urea oxidation reaction at high current density DOI
Guangfu Qian, Haotian Xu, Liancen Li

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 679, P. 1320 - 1329

Published: Sept. 30, 2024

Language: Английский

Citations

4
Ball-milled Ni@Mo2C/C nanocomposites as efficient electrocatalysts for urea oxidation DOI
Dilip Kumar Tiwari, Tapan Kumar Ghosh, Ajay Gopinathan

et al.

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Language: Английский

Citations

0