CO2 Laser‐Stabilized Ni‐Co Dual Single‐Atomic Sites for Energy Generation and Ammonia Harvesting DOI
Juhyeon Park,

Jayaraman Theerthagiri,

Nuttapon Yodsin

et al.

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

Published: May 2, 2025

Abstract Dual single‐atom catalysts (DSACs) hold immense potential in electrochemical nitrate (NO 3 − ) reduction (EcNR) as a sustainable replacement to the Haber–Bosch process for production of ammonia (NH ). However, challenges such synthesis complexity, low purity, scalability, and stability have hindered their practical application. Herein, rapid scalable method is introduced stabilize low‐cost d transition metals (Ni Co) DSACs on Ti C 2 T x MXene 10 min using continuous‐wave CO ‐laser irradiation. Ni 2+ Co ions are chelated stabilized single atoms onto an L‐tryptophan‐modified surface via metal─O metal─N bonds, forming Ni‐single atom catalyst (SAC)/MXene, Co‐SAC/MXene, NiCo‐DSAC/MXene. This approach enhances properties, enabling efficient atomic‐level electrocatalysts. Potential‐resolved situ Raman spectroelectrochemistry density functional theory reveal that EcNR proceeds through NO * , NO, NH, NH intermediates, ultimately final protonation step. exhibits limiting −0.37 V, with identified critical NiCo‐DSAC/MXene exhibited superior performance 1.0 M potassium hydroxide sustained multiple cyclic stability. Furthermore, this integrated into Zn–NO battery simultaneously removes generates energy, synthesizes .

Language: Английский

Low Rh doping accelerated HER/OER bifunctional catalytic activities of nanoflower-like Ni-Co sulfide for greatly boosting overall water splitting DOI

Jia-Chun Gan,

Zuo-Feng Jiang,

Keming Fang

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 221 - 231

Published: Aug. 9, 2024

Language: Английский

Citations

47
Synergistic Atomic Environment Optimization of Nickel–Iron Dual Sites by Co Doping and Cr Vacancy for Electrocatalytic Oxygen Evolution DOI

Hua‐Jie Niu,

Nian Ran,

Wei Zhou

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

The dual-site synergistic catalytic mechanism on NiFeOOH suggests weak adsorption of Ni sites and strong Fe limited its activity toward alkaline oxygen evolution reaction (OER). Large-scale density functional theory (DFT) calculations confirm that Co doping can increase adsorption, while the metal vacancy reduce adsorption. combined two factors further modulate atomic environment optimize free energy oxygen-containing intermediates, thus enhancing OER activity. Accordingly, we used Cr vacancies to fabricate an amorphous catalyst VCr,Co-NiFeOOH. It provides overpotential 239 mV at 100 mA cm–2 high stability over 500 h with a ∼98% potential retention. resulting water electrolyzer based anion exchange membrane (AEM) exhibits remarkable performance 1 A 1.68 V in M KOH. XPS, soft-XAS, XANES Bader charge analysis results reveal regulation local microenvironment valence state by doping, improving sites. alleviate DFT effect redistribute Ni/Fe sites, d-band center Fe, endow Ni–Fe dual barrier rate-determining step.

Language: Английский

Citations

15
MXene‐Supported Single‐Atom Electrocatalysts DOI Creative Commons

Jianan He,

Joshua D. Butson, R. Gu

et al.

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

Published: March 27, 2025

MXenes, a novel member of the 2D material family, shows promising potential in stabilizing isolated atoms and maximizing atom utilization efficiency for catalytic applications. This review focuses on role MXenes as support single-atom catalysts (SACs) various electrochemical reactions, namely hydrogen evolution reaction (HER), oxygen (OER), reduction (ORR), carbon dioxide (CO2RR), nitrogen (NRR). First, state-of-the-art characterization synthesis methods MXene-supported SACs are discussed, highlighting how unique structure tunable functional groups enhance performance pristine contribute to SAs. Then, recent studies different electrocatalytic areas examined, including experimental theoretical studies. Finally, this discusses challenges outlook field electrocatalysis.

Language: Английский

Citations

1
Engineering MXene Surface via Oxygen Functionalization and Au Nanoparticle Deposition for Enhanced Electrocatalytic Hydrogen Evolution Reaction DOI Open Access

Mengrui Li,

Xiaoxiao Dong,

Qinzhu Li

et al.

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

Published: Nov. 12, 2024

MXene, a family of 2D transition metal carbides and nitrides, presents promising applications in electrocatalysis. Maximizing its large surface area is key to developing efficient non-noble-metal catalysts for the hydrogen evolution reaction (HER). In this study, oxygen-functionalized Ti

Language: Английский

Citations

9
Electrodeposition of nickel–cobalt alloys from metal chloride-l-serine deep eutectic solvent for the hydrogen evolution reaction DOI

Yanling Hu,

Chao Wang

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(27), P. 16769 - 16779

Published: Jan. 1, 2024

Ni–Co alloys are electrodeposited from metal chloride- l series deep eutectic solvent and used as HER electrocatalysts in 1 M KOH.

Language: Английский

Citations

8
Interface engineering of hollow Janus-structured NiCoP/P-MoS2 heterojunction as self-supported electrode enables boosted alkaline hydrogen evolution reaction DOI
Qiaomei Luo,

Yuanjiang Lv,

Peng Zhang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 668 - 677

Published: Jan. 11, 2025

Language: Английский

Citations

1
Ultra-low Pt induced amorphous/crystalline heterophase Pt-Co2P hollow nanotubes for superior water electrolysis at industrial temperatures DOI
Ziting Li, Peng Zhou, Mingyan Zhang

et al.

Fuel, Journal Year: 2025, Volume and Issue: 388, P. 134598 - 134598

Published: Feb. 5, 2025

Language: Английский

Citations

1
Toward a molecular-scale picture of water electrolysis: mechanistic insights, fundamental kinetics and electrocatalyst dynamic evolution DOI
Man Chen, Yingju Yang,

Yuandong Ding

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 536, P. 216651 - 216651

Published: April 6, 2025

Language: Английский

Citations

1
Ti3C2Tx MXene induces strong electronic metal-support interaction with Ni nanoparticles for hydrogen evolution reaction with Pt-like activity DOI
Yixuan Han, Xiaodan Yang, Yidan Zhao

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(18), P. 5957 - 5963

Published: Jan. 1, 2024

A new-style Ti 3 C 2 T x supported Ni nanoparticle hybrid was developed as a HER electrocatalyst under alkaline conditions with Pt-like catalytic activity.

Language: Английский

Citations

5
Novel 2D Material of MBenes: Structures, Synthesis, Properties, and Applications in Energy Conversion and Storage DOI Open Access

Yuquan Yang,

Huichao Wang, Chenjing Wang

et al.

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

Published: Oct. 13, 2024

Abstract 2D transition metal borides (MBenes) have garnered significant attention from researchers due to their exceptional electrical conductivity, strong mechanical rigidity, excellent dynamic and thermodynamic stability, which stimulates the enthusiasm of for study MBenes. Over past few years, extensive research efforts been dedicated MBenes, resulting in a growing number synthesis methods being developed. However, there remains scarcity comprehensive reviews on particularly relation techniques employed. To address this gap, review aims provide summary latest findings An exhaustive exploration crystal structure types MBenes is presented, highlighting greater structural diversity compared MXenes. Furthermore, recent advancements methodologies provided. The also delves into physical chemical properties while elucidating applications realms energy conversion storage. Lastly, concludes by summarizing offering insights three angles: synthesis, structure‐property relationships, application prospects.

Language: Английский

Citations

5