High-performance Fe-MoS2@PPy nanostructures for portable sports energy supply DOI
Xiaofei Ma, Xiang Wu, Yunfei Ma

et al.

Journal of Solid State Electrochemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

Surface-reconstructed FeOOH@CoFeOS/NF architectures: leveraging nano-layered stacking for accelerated oxygen evolution kinetics DOI
Xuelei Wang, Xiang Li, Baohua Li

et al.

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The two-step surface reconstruction method was used to prepare FeOOH@CoFeOS/NF, which exhibits a low overpotential of 212 mV at 10 mA cm −2 .

Language: Английский

Citations

2
Low-Level Fe Doping in CoMoO4 Enhances Surface Reconstruction and Electronic Modulation Creating an Outstanding OER Electrocatalyst for Water Splitting DOI

Chengzhuo Li,

Xiaolu Yang,

Y.J. Kou

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Efficient and stable nonprecious metal-based oxygen evolution reaction (OER) electrocatalysts are pivotal for water electrolysis technology. Herein, we reporting an effective strategy fabricating efficient Co-based OER by low-level Fe doping in CoMoO4 to boost surface reconstruction electronic modulation, which resulted excellent electroactivity consequently. Our findings reveal that a mere 5.30% (wt %) of can raise the O 2p band center energy nearer Fermi level, reduce barrier vacancy (VO) formation, significantly enhance electrocatalytic activity. Additionally, fast dissolution Mo initial facilitated form active oxyhydroxide species stabilized Co from leaching. As result, optimized catalyst Fe-CoMoO4-0.2 exhibited low overpotential 276 mV at 10 mA cm-2 1 M KOH operate stably current density 20 least 24 h under splitting conditions. This work provides example regulating structure properties catalysts.

Language: Английский

Citations

1
Gallium-based materials for electrocatalytic and photocatalytic hydrogen evolution reaction DOI
Chunmei Liu,

Jiamin Ma,

Zimei Fu

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 73, P. 490 - 509

Published: June 11, 2024

Language: Английский

Citations

6
Interface reconstruction of NiCoP@NiMoP self-supported electrodes for highly efficient alkaline water/seawater electrolysis DOI
Dengke Wang,

Xinyu Huai,

Xiang Wu

et al.

Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: 968, P. 118532 - 118532

Published: July 26, 2024

Language: Английский

Citations

6
Direct seawater electrolysis through in situ purification using dual ion exchange membranes DOI

Qing-Yun Fang,

Jingjing Gu,

Runxia He

et al.

Journal of Solid State Electrochemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Language: Английский

Citations

0
Regulating Reconstruction‐Engineered Active Sites of CoP Electrocatalyst by Br Ions During the Oxygen and Hydrogen Evolution Reaction DOI Creative Commons
Jing Yao, Yuanyuan Zhang, Feng Gao

et al.

Energy & environment materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

An in‐depth understanding of the catalyst surface evolution is crucial for precise control active sites, yet this aspect has often been overlooked. This study reveals spontaneous anion regulation mechanism Br‐doped CoP electrocatalysts in alkaline hydrogen reaction (HER) and oxygen (OER). The introduction Br modulates electronic structure Co site, endowing Br‐CoP with a more metallic character. In addition, P ion leaching promotes situ reconstruction Br‐CoOOH, which real site OER reaction. Meanwhile, HER situation different. On basis leaching, ions formation CoP‐Co(OH) 2 species. doping enhances adsorption *H, showing excellent H free energy, thereby greatly improving activity. Simultaneously, it also OOH*, effectively facilitating occurrence reactions. only needs 261 76 mV overpotential to drive current density 20 mA cm −2 10 , can be maintained unchanged 100 h. provides new insights into strategies mechanisms.

Language: Английский

Citations

0
Nickel‐Doped Co3O4@CoMoO4 Core–Shell Structures for Low Temperature Asymmetric Supercapacitors DOI

Xinyu Huai,

Dengke Wang, Xiang Wu

et al.

Advanced Sustainable Systems, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 17, 2024

Abstract It is significant to explore the electrode materials for supercapacitors with high storage energy and long cycling stability. Herein, nanoporous Ni‐Co 3 O 4 @CoMoO composite fabricated excellent electrochemical performance. The as‐prepared sample delivers a specific capacity of 1212 C g −1 at 1 A superior cycle performance (91.7% after 10 000 times charging discharging). Several asymmetric (ASCs) are assembled using synthesized products as cathode. They achieve an density 102 Wh kg power 2770 W . In addition, devices present outstanding mechanical stability multiple bending, demonstrating their potential application in field portable devices.

Language: Английский

Citations

2
Coordination Compound Derived Co9S8 Supported on Nitrogen and Sulfur Co‐doped Porous Carbon for Oxygen Reduction Reaction DOI
Yuan Zhao, Wenqiang Liu,

Rujie Teng

et al.

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(22)

Published: Aug. 6, 2024

Abstract Cobalt sulfide, a class of metal chalcogenide with tunable electronic structure and component distribution, has attracted considerable interest in renewable energy conversion utilization. In this work, we report facile, efficient scalable method to synthesize Co 9 S 8 supported on nitrogen sulfur co doped porous carbon (Co /N,S‐PC) hybrid from the annealing treatment coordination compound assembled by 2‐mercaptobenzimidazole, 4,4‐bipyridine cobalt salt. The heteroatom organic ligand could efficiently tune properties nanoparticles well‐designed carbon. Meanwhile interaction ligands provides platform for high dispersion . Owing synergetic effect, /N,S‐PC catalyst shows an admirable oxygen reduction reaction (ORR) activity E 1/2 0.804 V vs RHE, together good durability, tolerance methanol poisoning alkaline media.

Language: Английский

Citations

1
Ternary Co0.4Fe1.6P Catalysts for Efficient Electrolysis of Water DOI
Shaobin Tang, Xiang Wu, Yoshio Bando

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

In recent years, transition metal phosphides as electrocatalysts are the research hotspot due to their low cost and high electrical conductivity. However, applications largely restricted by conversion efficiency sluggish reaction kinetics. Herein, we report several kinds of flower-like Co0.4Fe1.6P catalysts through a facile hydrothermal approach subsequent phosphating process. The as-prepared materials possess sufficient catalytic sites facilitate ion transfer. Co0.4Fe1.6P-2 electrode presents an overpotential 244 mV@50 mA cm–2 for oxygen evolution (OER) 96 mV@10 hydrogen (HER). Moreover, assembled two-electrode system voltage 1.66 V at current density 50 cm–2.

Language: Английский

Citations

1
NiFeP Microsphere Electrocatalyst for High-Efficiency Electrolysis of Water DOI Open Access
Li Ding, Xiang Wu

Catalysts, Journal Year: 2024, Volume and Issue: 14(8), P. 485 - 485

Published: July 29, 2024

Electrochemical water splitting is a viable solution for producing clean energy sources. However, the sluggish reaction kinetics and high overpotential restrict their further application in large-scale hydrogen generation. In this work, we prepared NiFeP catalysts by hydrothermal phosphorization treatment studied effect of temperature on morphology properties samples. The NiFeP-140 samples possess specific surface area 25.13 m2g−1, which provides many active sites electrochemical reaction. They show an 93 mV at 10 mA cm−2 evolution (HER) 233 @ 50 oxygen (OER). Also, Tafel slopes 79.24 dec−1 80.73 This facile strategy can be extended to prepare other transition-metal electrocatalysts.

Language: Английский

Citations

0