OOIR: Observatory of International Research

Papers

(The H4-Index of International Journal of Hydrogen Energy is 122. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-11-01 to 2025-11-01.)

Article	Citations
Structural and photoelectrochemical properties of fibrous silica-titania (FST) photocatalyst for water splitting	1164
Modulation the carrier separation mechanism of CdS photoanode: From vacancy to crystal phase transformation	595
A comparative techno-economic analysis of aqueous and anhydrous HCl electrolysis processes	594
The impact of hydrogen on forced-draft gas burners: A numerical investigation of nitrogen oxide emissions	523
Novel van der Waals heterostructure g-C3N4/XP3 for photocatalytic hydrogen production: A first-principles study	502
Electrolysis of aqueous polymer solutions for low-cost hydrogen production: An experimental case study of polyethylene oxide (PEO) electrolysis	497
Nanoflower-like PdCuP catalysts for enhancing ethanol electrooxidation	483
Composite based on nickel-functionalized carbon nitride and carbon nanotubes as an efficient electrocatalyst for the oxygen evolution reaction	471
Investigation into the explosion characteristics of hydrogen-ammonia mixture: Effect of ignition position	439
Metallic gallium: A liquid phase to destabilize nanoconfined LiBH4	434
Regulation of V for the phase transition of NiO to Ni0 to effectively boost hydrogen evolution reaction activity in electrocatalytic water splitting	406
Coulombic interaction-based S-scheme heterojunction between amorphous calcium titanium oxide and protonated carbon nitride nanosheets for efficient solar hydrogen production	391
Ti-substituted organosilica membranes for H2 sieving: Sol-gel and DFT insights	386
Robust alkaline stability of MOFs functionalized poly (aryl ether ketone) anion exchange membranes for hydrogen fuel cells	371
Numerical simulation of the coupling mechanism between hydrogen coaxial jet diffusion combustion and heat transfer in water-cooled tube bundles	332
Remaining useful life prediction of fuel cells using a dual data-driven model with relative power loss rate-based health indicator under real-world traffic conditions	331
Performance analysis of a 1 MW reversible solid oxide system for flexible hydrogen and electricity production	321
Development and justification of a hydrogen–in–oxygen combustion system using recirculation based on an experimental study	286
Assessing the accuracy and replicability of water formation modeling in PEM fuel cells: A sensitivity analysis of key performance parameters using computational fluid dynamics	272
Enhanced hydrogen storage performance of zinc and magnesium cobaltite nanocomposites	268
Cost reduction strategy for microtubular solid oxide fuel cells: Integrating tape casting, isostatic pressing and co-sintering	259
NiFeOOH deposition on various 3D electrode geometries to influence bubble dynamics under technical relevant alkaline water electrolysis conditions	259
Fluid secretion in rotating cylinder when flow impinge its surface and thermal analysis with energy dissipation: Polynomials based solution	253
Waste to hydrogen: Investigation of different loads of diesel engine exhaust gas	247
Observer-based decoupling control of air flow and pressure in fuel cell systems	245

Performance assessment of anion exchange electrolyzer with PBI-BASED membrane through 0-D modeling	237
Recent research progress of catalysts for thermocatalytic ammonia decomposition	235
H2 production via H2S decomposition over activated carbon supported Fe- and W- catalysts	232
Synthesis of methanethiol from CO2/H2S/H2 catalyzed by hollow nanospheres VS4 with high catalytic activity	229
Detonation effect of hydrogen-oxygen mixtures at various initial pressures and hydrogen concentrations in obstructed channels	223
Energy-economic-environment (3E) analysis of green hydrogen production: Comparing power purchase agreement and onsite renewable power	221
Photoproduction of Hydroxyl Radicals Under Sunlight by Fe-Zn Oxides for Partial Oxidation Applications	215
Numerical study of combustion noise of a lean-premixed green H2-ethylene fuel: A machine learning optimization	208
Integrated multi-generation system with three-stage RO: A comprehensive study of the exergy-cost-environment nexus	207
Steam dilution effect on laminar flame characteristics of hydrogen-enriched oxy-combustion	202
Efficient hydrogen evolution from NaBH4 using bimetallic nanoparticles (Ni–Co) supported on recycled Zn–C battery electrolyte paste	199
Nickel nanoparticle-decorated twinned crystal CdxZn1−xS for enhanced photocatalytic hydrogen production	198
Impact of a protic dimeric ionic liquid on PEM fuel cell performance and durability	198
A method for predicting long-term degradation of fuel cells: Wavelet-linear enhanced neural network	196
Optimizing annealing treatment of mesoporous MoO2 nanoparticles for enhancement of hydrogen evolution reaction	192
Production of Mg thin flakes with enhanced hydrogen storage performance	191
The design and techno-economic evaluation of wind energy integrated on-site hydrogen fueling stations for different electrolyzer technologies	190
Nitrogen-doped carbon achieving the construction of high-loading Pt catalyst and enhancement of fuel cells performance	185
Flame structure and NO production on laminar non-premixed flames of ammonia with highly preheated air	180
Green catalyst for the fabrication of high-surface-area carbon aerogels for efficient hydrogen adsorption	178
First principles study on strain effect of hydrogen diffusion and dissolution behavior in Ruthenium	176
Optimization of hydrothermal parameters and multifunctional catalytic activity of NiFe-LDH electrocatalyst	175
A review of hydrogen production from food waste through gasification process	174
Hydrogen production using aluminum-water splitting: A combined experimental and theoretical approach	173
Forecasting energy use and efficiency in transportation: Predictive scenarios from ANN models	173
Study on low-vanadium Ti–Zr–Mn–Cr–V based alloys for high-density hydrogen storage	172
Bimetallic polyoxometalate derived Co/WN composite as electrocatalyst for high-efficiency hydrogen evolution	171
Atomistic understanding of Pt-based medium entropy alloys for oxygen reduction electrocatalysis based on first principles	170
Improvement of hydrogenation sorption properties of Ti0.90V0.30Mn1.00Ni0.80 for ultra-high pressure metal-hydride compressor	169
The role of retained austenite against hydrogen embrittlement and white etching area formation in bearing steel under dynamic loading	164
Boron-based hydrogen storage materials towards Power-to-X technology on the path to carbon neutrality	163
PPOs having piperidinium-based conducting head groups with extra molecular interaction sites as new anion exchange membranes	163
The effect of EGR and hydrogen addition to natural gas on performance and exhaust emissions in a diesel engine by AVL fire multi-domain simulation, GPR model, and multi-objective genetic algorithm	162
In situ growth of TiO2 and its immobilization on PVDF films for the adsorption and photocatalytic degradation of dye	162
Mechanistic insights into hydrogen production from formic acid catalyzed by Pd@N-doped graphene: The role of the nitrogen dopant	161
Research status and progress in degradation of organic pollutants via hydrogen evolution reaction and oxygen evolution reaction in wastewater electrochemical treatment	161
Effects of the carbon black properties in gas diffusion layer on the performance of proton exchange membrane fuel cells	161
Guest editorial for the special issue hydrogen production based on papers selected from the 23rd world hydrogen energy conference (WHEC-2022)	160
Modeling of single- and double-sided high-pressure operation of solid oxide electrolysis stacks	160
Accelerated discovery of hydrogen storage hydride perovskites: A combined machine learning and first-principles approach	160
Energy and exergy analysis of an integrated system with solar methane cracking and co-electrolysis of CO2/H2O for efficient carbon management	158
How to determine whether an electron transfer channel is type-II or S-scheme in g–C3N4–based photocatalysts? A critical review	157
Environmental remediation through tandem hydrogenolysis of polyethylene and H2 evolution over butterfly shaped MoO3@RuO2 heterostructures	157
WITHDRAWN: The role of cobalt on cathode material for intermediate temperature solid oxide fuel cells: A review	155
The Ni–P dual vacancies crystalline/amorphous bifunctional electrode with ZnO “electron pump” for urea-assisted electrolysis of water to produce hydrogen	155
Efficient photocatalytic hydrogen generation by CeCO3OH/TiO2 composites	155
Influence of cobalt dopant in NiFe2-xCoxO4 (0≤x≤2) on electrochemical catalytic properties	152
High-value utilization of intermetallic Cu9Al4 as an additive to improve the hydrogen storage performance of magnesium	151
Optimization and comparison of two improved very high temperature gas-cooled reactor-based hydrogen and electricity cogeneration systems using iodine-sulfur cycle	150
S/Se dual-doping promotes the formation of active Ni/Fe oxyhydroxide for oxygen evolution reaction of (sea)water splitting	150

What determines the stability of Fe-N-C catalysts in HT-PEMFCs?	149
From shape to function: Constructing gourd-shaped bimetal/semiconductor hybrids for boosted photocatalytic hydrogen evolution	149
Computational screening of oxygen and sulfur decorated MXene supported transitions metal single-atom catalysts for hydrogen evolution reaction	148
Machine learning-assisted tri-objective optimization inspired by grey wolf behavior of an enhanced SOFC-based system for power and freshwater production	145
Novel nuclear power and chemical energy hybrid propulsion system with fuel precooling: Scheme comparison and performance evaluation	143
Visible light-driven photothermal Au/Ag/TiO2 trihybrid plasmonic nanomaterial for synthetic fuel production	142
Real-time data-driven fault diagnosis of proton exchange membrane fuel cell system based on binary encoding convolutional neural network	142
Enhanced bioelectrochemical performance by NiCoAl-LDH/MXene hybrid as cathode catalyst for microbial fuel cell	140
Levelized and environmental costs of power-to-gas generation in Germany	139
Phase pure synthesis of iron-nickel nitride nanoparticles: A low cost electrocatalyst for oxygen evolution reaction	139
Process simulation and optimization of groundnut shell biomass air gasification for hydrogen-enriched syngas production	137
Effective thermal conductivity of insulation materials for cryogenic LH2 storage tanks: A review	136
New PdNiAu ternary alloys as potential material for hydrogen separation processes	136
A core-shell NiCu@NiCuOOH 3D electrode induced by surface electrochemical reconstruction for the ammonia oxidation reaction	136
Nickel–cobalt layered double hydroxide/NiCo2S4/g-C3N4 nanohybrid for high performance asymmetric supercapacitor	135
Low-temperature partial oxidation of methane over Pd–Ni bimetallic catalysts supported on CeO2	135
Subsurface technologies for hydrogen production from fossil fuel resources: A review and techno-economic analysis	135
Ejector validation in proton exchange membrane fuel cells: A comparison of turbulence models in computational fluid dynamics (CFD) with experiment	134
Chemically and thermally reduced graphene oxide supported Pt catalysts prepared by supercritical deposition	133
Promotional effect of acetic acid on simultaneous NO and Hg0 oxidation over LaCoO3 perovskite	132
Enhanced bioelectrochemical performance of CoS2/TiO2 attaching Fe-based metal organic frameworks grown on NiFe-layered double hydroxide as cathode catalyst in microbial fuel cell	132
Recent advances in efficient piezo-photocatalysis modulated by morphology and structure control	131
Mesoporous Ni–Pt nanoparticles on Ni foam by electrodeposition: Dual porosity for efficient alkaline hydrogen evolution	130
Defects engineering of Au@MoS2 nanostructures for conventional and plasmon-enhanced hydrogen evolution reaction	130
Understanding the evolution of high-entropy oxide OER electrocatalyst with anion regulation	130
Quantitative risk assessment of a mobile hydrogen refueling station in Korea	130
Enhancing hydrogen production from biomass steam gasification: The role of chemical variability of industrial biomass fly ash catalysts	129
Efficient band structure tuning of single-layer group IV-N semiconductors for visible-light-driven water splitting	129
Tourist preferences for fuel cell vehicle rental: going green with hydrogen on the island of Tenerife	128
Cost-optimal design and energy management of fuel cell electric trucks	128
Enhancing power system reliability: Hydrogen fuel cell-integrated D-STATCOM for voltage sag mitigation	128
Design and simulation of a scalable green hydrogen system powered by solar energy in the Ouargla region of Algeria	127
Bismuth-based nanomaterials-assisted photocatalytic water splitting for sustainable hydrogen production	127
Energy, exergy, economic and environmental (4-E) analyses of plasma gasification steam cycle integrated molten carbonate fuel cell for hydrogen and power co-generation based on residual waste feedstoc	126
Integrated planning method of green hydrogen supply chain for hydrogen fuel cell vehicles	126
Influence of hydrogen on the tensile properties of X65 D pipeline steel	125
Exploring novel characteristics of GaBaX3 (X= F, Cl, Br, I, H) for energy harvesting applications: A DFT-based analysis	125
Effect of different CdS morphologies on photocatalytic water splitting performance of CdS@ZIF-67 composites	125
An analytical model for the velocity and gas fraction profiles near gas-evolving electrodes	125
Carbon-based materials for Mg-based solid-state hydrogen storage strategies	124
Comparative diesel engine performance and emission forecasting using extreme learning and quadratic regression techniques burning waste cooking biodiesel	124
Two-stage model predictive control for a hydrogen-based storage system paired to a wind farm towards green hydrogen production for fuel cell electric vehicles	123
Metal-decorated boron phosphide (BP) biphenylene and graphenylene networks for ultrahigh hydrogen storage	123
Conceptual process design and technoeconomic analysis of an e-ammonia plant: Green H2 and cryogenic air separation coupled with Haber-Bosch process	123
Enhancement of fuel cell based energy sustainability for cell on wheels mobile base stations used in disaster areas	123
Unleashing the potential of NiO@V2CTx MXene-derived electrocatalyst for hydrogen and oxygen evolution	122
Highly efficient catalytic hydrolysis of NH3BH3 over Ru nanoparticles anchored to chitosan-h-BN composite	122