Isolated p‐Block Antimony Atoms Activated CuO@Co‐CN Enable High Performances for Water Splitting and Zn‐Air Batteries DOI Open Access

Xinfeng Zhu,

Kaixuan Dong, Duy Thanh Tran

et al.

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

Published: Dec. 10, 2024

Abstract This study reports an effective strategy for designing 3D electrocatalyst via the deposition of ZIF67‐derived Co–CN shell layer over CuO nanoarrays to form a CuO@Co–CN hybrid, followed by incorporation with p ‐block Sb single atoms (CuO@Co–CN/Sb) obtain highly activated catalytic behaviors. Inheriting both excellent intrinsic activity components and their synergy, CuO@Co–CN/Sb material serves as high‐efficiency multifunctional catalyst overall water splitting zinc (Zn)–air batteries. The yields current density 10 mA cm −2 at low overpotential 72 250 mV hydrogen evolution reaction oxygen reaction, respectively. Furthermore, electrolyzer based on shows remarkable performance derived 0.5 A cell voltage 2.67 V good stability 50 h continuous operation high . Simultaneously, Zn–air battery using air cathode open circuit 1.455 discharge power 131.07 mW

Language: Английский

Long‐term Durability of Seawater Electrolysis for Hydrogen: From Catalysts to Systems DOI
Yü Liu, Yong Wang, Paolo Fornasiero

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(47)

Published: Aug. 29, 2024

Abstract Direct electrochemical seawater splitting is a renewable, scalable, and potentially economic approach for green hydrogen production in environments where ultra‐pure water not readily available. However, issues related to low durability caused by complex ions pose great challenges its industrialization. In this review, mechanistic analysis of electrolytic discussed. We critically analyze the development electrolysis identify at both anode cathode. Particular emphasis given elucidating rational strategies designing electrocatalysts/electrodes/interfaces with long lifetimes realistic including inducing passivating anion layers, preferential OH − adsorption, employing anti‐corrosion materials, fabricating protective immobilizing Cl on surface electrocatalysts, tailoring adsorption sites, inhibition binding Mg 2+ Ca , hydroxide precipitation adherence, co‐electrosynthesis nano‐sized hydroxides. Synthesis methods electrocatalysts/electrodes innovations electrolyzer are also Furthermore, prospects developing technologies clean generation summarized. found that researchers have rethought role ions, as well more attention cathodic reaction electrolyzers, which conducive accelerate commercialization electrolysis.

Language: Английский

Citations

14
Trace Iron-Doped Nickel-Cobalt selenide with rich heterointerfaces for efficient overall water splitting at high current densities DOI

Shouyan Guo,

Linyi Zheng, Xusheng Wang

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 674, P. 902 - 912

Published: June 29, 2024

Language: Английский

Citations

8
Constructing electron-enriched Co tetrahedral sites to promote oxygen electrocatalysis in rechargeable zinc-air batteries DOI
Jingrui Han, Jieshu Zhou,

Wei Song

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 359, P. 124468 - 124468

Published: Aug. 4, 2024

Language: Английский

Citations

8
Morphological engineering of monodispersed Co2P nanocrystals for efficient alkaline water and seawater splitting DOI
Xiuwen Wang, Tingting Su, Zhaohui Lu

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 691, P. 137389 - 137389

Published: March 20, 2025

Language: Английский

Citations

1
Boosting Oxygen Evolution Reaction Performance on NiFe-Based Catalysts Through d-Orbital Hybridization DOI Creative Commons
Xing Wang, Wei Pi, Sheng Hu

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 26, 2024

Abstract Anion-exchange membrane water electrolyzers (AEMWEs) for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based catalysts. By introducing a third metal into catalysts construct asymmetrical M-NiFe units, the d -orbital and electronic structures can be adjusted, which is an important strategy achieve sufficient oxygen evolution reaction (OER) performance in AEMWEs. Herein, ternary NiFeM (M: La, Mo) featured with distinct units varying -orbitals are reported this work. Experimental theoretical calculation results reveal that doping La leads optimized hybridization between orbital 2 p oxygen, resulting enhanced adsorption strength intermediates, reduced rate-determining step energy barrier, responsible OER performance. More critically, obtained NiFeLa catalyst only requires 1.58 V reach 1 A cm −2 anion exchange electrolyzer demonstrates excellent long-term stability up 600 h.

Language: Английский

Citations

7
Activating FeMoO4 nanosheet arrays by partial nickel substitution for efficient electrocatalytic seawater oxidation DOI

Jun-Ya Gao,

Yin-Lei Ma,

Guangsheng Qian

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Nickel is integrated into self-supported FeMoO 4 nanosheet arrays by a spontaneous redox reaction, which shows significantly enhanced electrocatalytic OER performance and long-term durability under both alkaline seawater conditions.

Language: Английский

Citations

7
Tailoring the Electronic and Hydrophilic Properties of Nickel Oxide Hydroxides by Bismuth Incorporation Toward Enhanced Alkaline Electrocatalytic Water Oxidation DOI Open Access
Xiaomei Wang, Бо Лю, Ruizhi Duan

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Abstract Identification of electrocatalysts with suitable electronic and hydrophilic properties is indispensable for boosting the alkaline oxygen evolution reaction (OER). The incorporation bismuth (Bi) into Nickel oxide hydroxides presented to simultaneously tune these catalyst toward enhanced OER. It shown that Bi doping endows more reversibility Ni, enhances lattice reactivity, leads a weakly binding surface resultant NiBi(OH) x electrocatalyst. These can not only accelerate redox transformation OER intermediates but also enhance oxygen‐involved process, which collaboratively boost kinetics. Moreover, manipulates property electrode, facilitates mass transfer by allowing facile diffusion gaseous products electrolytes. As result, optimized Ni 97 3 (OH) electrode delivers current density 500 mA cm −2 at an overpotential 357 mV without losing performance over 1000 h, on par state‐of‐the‐art NiFe anodes. This work provides effective strategy electrocatalytic in through integration regulation modification.

Language: Английский

Citations

0
High-Performance Nickel–Bismuth Oxide Electrocatalysts Applicable to Both the HER and OER in Alkaline Water Electrolysis DOI Creative Commons
Seunghyun Jo,

Byeol Kang,

SiEon An

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

As an electrocatalyst for water electrolysis, nickel oxide (NiO) has received significant attention due to its cost-effectiveness and high reactivity among non-noble-metal-based catalytic materials. However, NiO still exhibits poor alkaline hydrogen evolution reaction (HER) oxygen (OER) kinetics compared conventional noble metal-based catalysts. This is because a strong interaction with protons the HER too low free energy of OH* state, resulting in slower rate-determining step (RDS) OER. To address these issues, adding dopant suggested as efficient method modify electron structure favorably each kinetics. In this context, we demonstrate that Bismuth (Bi), higher electronegativity than Nickel (Ni), induces positive charge on Ni sites. enhances activity by reducing number excessive cation interactions electrocatalyst. Moreover, Bi ratio increases, sites become more positively charged, changes electronic directly impact mechanism. Particularly, it confirmed HER, additives increase proton-adsorbed toward near-zero value and, additionally, decrease difference second considered RDS OER, calculated density functional theory. The effects both OER are demonstrated practical electrochemical evaluations half/single cells. Notably, Bi-containing catalysts Bi05:NiO Bi02:NiO exhibit remarkable kinetics, showing performance improvements 97.0% 21.9%, respectively.

Language: Английский

Citations

0
Alternating magnetic fields enhanced non-magnetic confined-ruthenium nanoparticles for efficient oxygen evolution reaction DOI

Fujin Huang,

Zhenzhen Jiang, Xingfang Luo

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(7)

Published: Feb. 17, 2025

Magnetic heating by alternating magnetic field (AMF) is a fascinating solution to break the bottleneck in oxygen evolution reaction (OER) catalyst improvement. However, practical applications of AMF electrochemistry are always impeded inherent characteristics (i.e., non-magnetic nature and oxidizable feature). Here, self-heating working electrode substrate C/Fe3O4/C proposed be fabricated, on which Ru nanoparticles confined within amorphous carbon matrix deposited as catalytic layer. Under AMF, Fe3O4 particle can stimulated generate associated with Néel relaxation, improves OER efficiency overpotential at 10 mA cm−2 reduced 72 mV. Together high stability rendered structure, exploitation confirmed, developed strategy offers general pathway advance performance future.

Language: Английский

Citations

0
Blocking Effect Retards Electron Release from Asymmetric Active Units for Selective Seawater Oxidation DOI
Zhipeng Li,

Huimin Mao,

Xiaobin Liu

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

During seawater electrolysis, chloride ion (Cl–) adsorption at the anode leads to an inevitable competitive oxidation reaction (ClOR) with oxygen evolution (OER), compromising long-term stability of electrolysis process. Furthermore, Ni-based OER electrocatalysts are challenged by activity degradation due overoxidation Ni3+. In response, we present a design oxygen-vacancy-regulated asymmetric Nb–O–Ni bonds aimed selective oxidation. The experimental and in situ characterization results indicate that blocking effect vacancies effectively alleviates electron release Ni3+ enrichment Nb5+ on bonds, achieving stable alkaline seawater. Density functional theory (DFT) calculations reveal optimize strength intermediates break up scaling relationship between *OH *OOH intermediates. constructed anion exchange membrane cell achieves cost efficiency $1.07 per GGE (gasoline gallon equivalent) for H2 production current density 1000 mA cm–2, maintaining operational 100 h 500 cm–2.

Language: Английский

Citations

0