International Journal of Hydrogen Energy, Год журнала: 2025, Номер 128, С. 697 - 712
Опубликована: Апрель 19, 2025
Язык: Английский
Crystals, Год журнала: 2025, Номер 15(2), С. 116 - 116
Опубликована: Янв. 23, 2025
Acidic oxygen evolution reaction (OER) electrocatalysts that provide high activity, lower costs, and long-term stability are needed for the wide-scale adoption of proton-exchange membrane (PEM) water electrolyzers generating hydrogen through electrochemical splitting. We report effects chromium substitution temperature treatments on structure, OER ruthenium oxide (RuO2) aerogel electrocatalysts. RuO2 Cr-substituted aerogels (Ru0.6Cr0.4O2) were synthesized using sol–gel chemistry then thermally treated at different temperatures. Introducing into synthesis increased surface area (7–11 times higher) pore volume (5–6 relative to aerogels. X-ray diffraction analysis is consistent with s Cr was substituted rutile structure. photoelectron spectroscopy showed trivalent altered electronic structure ratio hydroxides. The specific capacitance values charge storage within a hydrous surface. exhibited 26 mass activity 3.5 Electrochemical tests show exhibit similar commercial RuO2. Understanding how metal substituents can be used alter furthers our ability obtain highly active, durable, lower-cost PEM electrolyzers.
Язык: Английский
Процитировано
1
Energies, Год журнала: 2025, Номер 18(3), С. 650 - 650
Опубликована: Янв. 30, 2025
Hydrogen has emerged as a critical energy carrier for achieving global decarbonization and supporting sustainable future. This review explores key advancements in hydrogen production technologies, including electrolysis, biomass gasification, thermochemical processes, alongside innovations storage methods like metal hydrides liquid organic carriers (LOHCs). Despite its promise, challenges such high costs, scalability issues, safety concerns persist. Biomass gasification stands out dual benefits of waste management carbon neutrality yet hurdles feedstock variability efficiency need further attention. also identifies opportunities improvement, developing cost-effective catalysts hybrid systems, while emphasizing future research on improving tackling bottlenecks. By addressing these challenges, can play central role the transition to cleaner systems.
Язык: Английский
Процитировано
0
Practice, progress, and proficiency in sustainability, Год журнала: 2025, Номер unknown, С. 455 - 478
Опубликована: Янв. 17, 2025
this chapter aims to shed light on green hydrogen energy and its varying uses in the Arab region. The study seeks reveal types of energies their effectiveness reducing volume emissions resulting from fossil fuel production plants plants. also analyse negative positive effects extent ability reduce carbon through investments projects. Added this, focuses exploring economic consequences projects, including impact spending investment rates field, analysing benefits challenges that region may face adopting advanced technology.
Язык: Английский
Процитировано
0
Energies, Год журнала: 2025, Номер 18(6), С. 1515 - 1515
Опубликована: Март 19, 2025
The development of advanced electrocatalysts plays a pivotal role in enhancing hydrogen production through water electrolysis. In this study, we employed two-step electrodeposition method to fabricate 3D porous Cu-Co-Ni alloy with superior catalytic properties and long-term stability for evolution reaction (HER). resulting trimetallic alloy, Cu@Cu-Ni-Co, demonstrated significant improvements structural integrity performance. A comparative analysis electrocatalysts, including Cu, Cu@Ni-Co, revealed that Cu@Cu-Ni-Co achieved the best results alkaline media. Electrochemical tests conducted 1.0 M NaOH showed reached current density 10 mA cm−2 at low overpotential 125 mV, along Tafel slope 79.1 mV dec−1. catalyst exceptional durability, retaining ~95% its initial after 120 h continuous operation high densities. Structural confirmed enhanced performance arises from synergistic interaction between Ni, Co within well-integrated framework. This integration large electrochemical active surface area (ECSA) 380 cm2 charge transfer resistance (15.76 Ω), facilitating efficient electron promoting HER activity. These findings position as highly stable electrocatalyst conditions.
Язык: Английский
Процитировано
0
IGI Global eBooks, Год журнала: 2025, Номер unknown, С. 233 - 256
Опубликована: Апрель 8, 2025
The fundamental energy storage technologies can be effectively and progressively solved by proton exchange membrane water electrolysis (PEMWE). Currently, there is more fascination with PEM due to the growing demand produce environmentally friendly hydrogen. A deeper comprehension of performance robustness PEMWE critical for research community engineers its low efficiency, instability, high cost. To advance this technology's commercialization enable electrolyzer manufacturers apply quality control methods their production lines or on-site process monitoring. This study examines literature on in optimizing green hydrogen techniques. also covers possibility generating using PEMWE, a helpful strategy lowering greenhouse gas emissions industry. Ultimately, development paths are suggested technology make it crucial component future scenarios.
Язык: Английский
Процитировано
0
Results in Engineering, Год журнала: 2025, Номер unknown, С. 104849 - 104849
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
International Journal of Hydrogen Energy, Год журнала: 2025, Номер 128, С. 697 - 712
Опубликована: Апрель 19, 2025
Язык: Английский
Процитировано
0