Investigating the impact of electron beam irradiation on electrical, magnetic, and optical properties of XLPE/Co3O4 nanocomposites DOI Creative Commons
Mohamed Mohamady Ghobashy, A. I. Sharshir, R. A. Zaghlool

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 28, 2024

Abstract Nowadays, many researchers aim to fill polymer materials with inorganic nanoparticles enhance the properties and gain merits of polymeric host matrix. Sol–gel synthesized Co 3 O 4 are subjected different doses electron beam (10, 20, 30 kGy) study their physiochemical choose optimized our Crosslinked polyethylene (XLPE) has been filled 5 wt % un-irradiated cobalt oxide using melt extruder method. The structural, optical, magnetic, electrical XLPE/Co nanocomposite before after exposure radiation have characterized. crystallite size face-centered cubic spinel confirmed by XRD whereas unique truncated octahedral shape obviously appears in SEM micrographs. decreased from 47.5 31.5 nm upon irradiation at a dose kGy, significantly 18.5 filling inside XLPE Related oxidation effect beam, 2+ /Co 3+ ratio on surface as verified XPS technique. This consequently caused partial elimination oxygen vacancies, mainly responsible for weak ferromagnetic behavior its nanoscale. saturation magnetization depicted VSM. also shown but coercive field (H c ) increased 112.57 175.72 G matrix 135.18 irradiating kGy. ionic conductivity 0.133 × 10 –7 2.198 –3 S/cm while slight increase is observed irradiation.

Language: Английский

Optimization strategies of high-entropy alloys for electrocatalytic applications DOI Creative Commons
Liyuan Xiao, Zhenlü Wang, Jingqi Guan

et al.

Chemical Science, Journal Year: 2023, Volume and Issue: 14(45), P. 12850 - 12868

Published: Jan. 1, 2023

This review summarizes the synthesis methods, characterization research progress and regulation strategies of HAEs in field electrocatalytic HER, HOR, OER, ORR, CO 2 RR, NRR AOR, providing deep understanding for future applications.

Language: Английский

Citations

79
Stability of electrocatalytic OER: from principle to application DOI
Huangjingwei Li,

Yu Lin,

Junyuan Duan

et al.

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

Published: Jan. 1, 2024

A comprehensive summary of the stability electrocatalytic OER will provide insight into electrocatalyst design and device optimization for industrial applications.

Language: Английский

Citations

64
Iron Oxyhydroxide: Structure and Applications in Electrocatalytic Oxygen Evolution Reaction DOI

Bingrong Guo,

Haohao Huo,

Qixuan Zhuang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(25)

Published: March 10, 2023

Abstract Oxygen evolution reaction (OER) is the anodic half‐reaction for crucial energy devices, such as water electrolysis, metal–air battery, and electrochemical CO 2 reduction. Fe‐based materials are recognized one of most promising electrocatalysts OER because its extremely low price high activity. In particular, iron oxyhydroxide (FeOOH) not only highly active toward OER, but also widely accepted true species plenty converted into FeOOH during test. Herein, recent advances FeOOH‐based nano‐structure application in reviewed. The relationship between structure catalytic performance, followed by introduction current strategies enhancing activity (i.e., crystalline phase engineering, element doping, construction hybrid materials) mainly focused. Finally, a summary perspective about remaining challenges future opportunities this area further design provided.

Language: Английский

Citations

62
Work Function‐Guided Electrocatalyst Design DOI
Zhijie Chen, Tianyi Ma, Wei Wei

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(29)

Published: April 29, 2024

Abstract The development of high‐performance electrocatalysts for energy conversion reactions is crucial advancing global sustainability. design catalysts based on their electronic properties (e.g., work function) has gained significant attention recently. Although numerous reviews electrocatalysis have been provided, no such reports function‐guided electrocatalyst are available. Herein, a comprehensive summary the latest advancements in diverse electrochemical applications provided. This includes function‐based catalytic activity descriptors, and both monolithic heterostructural catalysts. measurement function first discussed descriptors various fully analyzed. Subsequently, function‐regulated material‐electrolyte interfacial electron transfer (IET) employed catalyst design, methods regulating optimizing performance discussed. In addition, key strategies tuning function‐governed material‐material IET examined. Finally, perspectives determination, put forward to guide future research. paves way rational efficient sustainable applications.

Language: Английский

Citations

59
Constructing oxygen vacancies by doping Mo into spinel Co3O4 to trigger a fast oxide path mechanism for acidic oxygen evolution reaction DOI

Lang Sun,

Min Feng,

Yang Peng

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(15), P. 8796 - 8804

Published: Jan. 1, 2024

The development of non-precious metal electrocatalysts for acidic oxygen evolution reaction (OER) that are highly durable, cost-effective, and efficient is crucial to advancing the use proton exchange membrane water electrolyzers (PEMWEs).

Language: Английский

Citations

52
Design yolk-shelled FeCo layered double hydroxide via a “one-stone-two-birds” strategy for oxygen evolution reaction DOI

Dongyu Han,

Lin Hao,

Rou Wang

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 336, P. 126363 - 126363

Published: Jan. 11, 2024

Language: Английский

Citations

45
Lattice Strain with Stabilized Oxygen Vacancies Boosts Ceria for Robust Alkaline Hydrogen Evolution Outperforming Benchmark Pt DOI
Xiaojing Liu, Shuaichong Wei,

Shuyi Cao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 12, 2024

Abstract Earth‐abundant metal oxides are usually considered as stable but catalytically inert toward hydrogen evolution reaction (HER) due to their unfavorable intermediate adsorption performance. Herein, a heavy rare earth (Y) and transition (Co) dual‐doping induced lattice strain oxygen vacancy stabilization strategy is proposed boost CeO 2 robust alkaline HER. The compression increased (O v ) concentration in synergistically improve the water dissociation on O sites sequential at activated ‐neighboring sites, leading significantly enhanced HER kinetics. Meanwhile, Y doping offers effect by its stronger Y─O bonding over Ce─O, which endows catalyst with excellent stability. Y,Co‐CeO electrocatalyst exhibits an ultra‐low overpotential (27 mV 10 mA cm −2 Tafel slope (48 dec −1 ), outperforming benchmark Pt electrocatalyst. Moreover, anion exchange membrane electrolyzer incorporated achieves stability of 500 h under 600 . This synergistic sheds new light rational development efficient oxide‐based electrocatalysts.

Language: Английский

Citations

43
Hetero MOF‐On‐MOF of Ni‐BDC/NH2‐MIL‐88B(Fe) Enables Efficient Electrochemical Seawater Oxidation DOI Creative Commons

Yanji Bao,

Haifeng Ru,

Yifeng Wang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(22)

Published: Feb. 4, 2024

Abstract Seawater electrolysis is a sustainable technology for producing hydrogen that would neither cause global freshwater shortages nor create carbon emissions. However, this severely hampered by the insufficient stability and competition from chlorine evolution reaction (ClER) in actual application. Herein, metal–organic framework (MOF)‐on‐MOF heterojunction (Ni‐BDC/NH 2 ‐MIL‐88B(Fe)) denoted as (Ni‐BDC/NM88B(Fe)) synthesized an effective oxygen (OER) electrocatalyst high‐performance seawater electrolysis, which exhibits long of 200 h low overpotentials 232 299 mV at 100 mA cm −2 alkaline solution, respectively. The exceptional performance attributed to rapid self‐reconstruction Ni‐BDC/NM88B(Fe) produce NiFeOOH protective layer, thereby avoiding ClER‐induced dissolution. Moreover, interface interaction between Ni‐BDC NM88B(Fe) could form Ni─O─Fe bonds promote electron transfer lower energy barrier rate‐determining step, accelerating OER. These electrochemical properties make it intriguing candidate efficient practical electrolysis.

Language: Английский

Citations

39
Magneto-Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility DOI Creative Commons

Chen Li,

Liang Leilei, Baoshan Zhang

et al.

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

Published: Oct. 16, 2024

Developing advanced stealth devices to cope with radar-infrared (IR) fusion detection and diverse application scenarios is increasingly demanded, which faces significant challenges due conflicting microwave IR cloaking mechanisms functional integration limitations. Here, we propose a multiscale hierarchical structure design, integrating wrinkled MXene shielding layer flexible Fe

Language: Английский

Citations

36
“Heterodimensional Structure” Integrated Defect and Interface Engineering for Efficiently EMI Shielding and Electrochemical Response DOI
Tingting Liu, Yuchang Wang,

Yuze Wang

et al.

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

Published: April 9, 2024

Abstract Two colossal global challenges remain energy scarcity and environmental pollution, having evolved into problems that human society cannot ignore. Therefore, developing a material with efficient electromagnetic (EM) interference shielding electrocatalytic properties has become imperative in promoting sustainable development establishing protection systems. Herein, heterodimensional structure is prepared by assembling 3D spirally grown VS 2 2D FeCo‐LDH, which precisely manipulates macroscopic EM electrochemical characteristics through defect interface engineering. The results show the presents an effectiveness of 30.2 dB at 18 GHz. Heterodimensional exhibits low overpotential 279 mV, achieving current density 10 mA cm −2 desirable stability. In addition, based on unique response material, special protective helmet innovated. incorporating autonomous oxygen supply, advanced pressure surveillance, dynamic stealth supports more exhaustive safeguard for missions amidst noxious gases, situations necessitating clandestine operations. This research provides new idea multifunctional active materials, showing great application prospects fields aerospace engineering, energy, security protection.

Language: Английский

Citations

33