International Journal of Hydrogen Energy最新文献

{"title":"Developing Science-based fueling protocols for 250-bar hydrogen tanks onboard hydrogen ferries: Experiments and modeling","authors":"B. Roy Chowdhury ,&nbsp;B. Lu ,&nbsp;S. Liedel ,&nbsp;Z. Zhang ,&nbsp;R. Gonin ,&nbsp;F. Ammouri ,&nbsp;N. Pal ,&nbsp;N. Monroe ,&nbsp;L.E. Klebanoff","doi":"10.1016/j.ijhydene.2026.153768","DOIUrl":"10.1016/j.ijhydene.2026.153768","url":null,"abstract":"<div><div>Combined modeling and experimental studies are reported of the fueling of a large (28 kg capacity) 250-bar Type IV hydrogen tank of the type being deployed on early hydrogen ferries, such as the MV <em>Sea Change</em>. The primary goal was to determine how such tanks can be successfully fueled with hydrogen (state of charge greater than 97 %) within 45 min without exceeding the 82 °C temperature limit for such tanks. The modeling studies show that a gas injector is needed to avoid thermal stratification during hydrogen fueling which can result in potential hot spots. Empirically, precooling of the hydrogen to 0 °C was found to be needed in some of the cases examined, as ambient conditions greatly affected the need for a precooling to achieve the 45-min fill time desired by end users. The experimental results afforded a calibration of the engineering model SOFIL for these large 250-bar tanks, which now enables using SOFIL to predict volume-averaged hydrogen fueling temperatures to an accuracy of ± 2.7 °C for these tanks. The model can therefore be used to evaluate potential scenarios for development of a standardized fueling methodology for ferries utilizing large Type-IV tanks.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153768"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ethanol electrooxidation on SILAR grown cobalt nanoelectrocatalysts: Effect of growth parameters and electrochemical quartz crystal microbalance study","authors":"Nazmeen Akhtar Sayyed ,&nbsp;Akshay Nandkishor Vyas ,&nbsp;Shrikrishna Dattatraya Sartale","doi":"10.1016/j.ijhydene.2026.153835","DOIUrl":"10.1016/j.ijhydene.2026.153835","url":null,"abstract":"<div><div>Co-based nanomaterials are known to be efficient non-noble electrocatalysts. Herein, a simple and cost-effective successive ionic layered adsorption and reduction (SILAR) method was employed to grow Co nanoelectrocatalysts on a carbon paper substrate. SILAR parameters such as reduction time, CoCl₂ precursor concentration and number of SILAR growth cycles were varied to study their effects on the electrocatalytic activities. CoCl₂ precursor concentrations significantly influenced the morphology of the grown Co nanoelectrocatalysts including shape, size and coverage. The electrocatalytic activity and stability of Co nanoelectrocatalysts were evaluated through cyclic voltammetry, electrochemical impedance spectroscopy and chronoamperometry measurements. SILAR parameters influenced the electrocatalytic activity and affected the redox peak potential values and current densities of Co nanoelectrocatalysts. Furthermore, the influence of SILAR parameters on electrocatalytic performance particularly in ethanol electrooxidation in alkaline solution was investigated by measuring the onset potential and current densities. The effect of scan rate and concentration of ethanol on Co nanoelectrocatalysts was investigated. After the ethanol electrooxidation, the surface morphology and chemical composition of the Co nanoelectrocatalysts were studied. An electrochemical quartz crystal microbalance (EQCM) was utilized to investigate the mass variations resulting from phase changes during redox reactions and the adsorption/desorption of ionic species over Co nanoelectrocatalysts. EQCM studies revealed that the electrochemical charge transfer reactions Co⁺²↔Co⁺³ ↔Co⁺⁴ are not associated with a significant change in mass.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153835"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Process design for sorption-enhanced chemical looping steam methane reforming: Selection of process configuration and combustible gas type","authors":"Napasrapee Hemsap ,&nbsp;Lida Simasatitkul ,&nbsp;Suwimol Wongsakulphasatch ,&nbsp;Worapon Kiatkittipong ,&nbsp;Suttichai Assabumrungrat ,&nbsp;Olaf Hinrichsen","doi":"10.1016/j.ijhydene.2026.153899","DOIUrl":"10.1016/j.ijhydene.2026.153899","url":null,"abstract":"<div><div>Process efficiency of sorption-enhanced chemical looping steam methane reforming for H₂ production were developed. The effects of reactor arrangement, namely reforming-oxidation-calcination (R-O-C) and reforming-calcination-oxidation (R-C-O) systems, and combustible gas type (CH₄ vs. H₂) were analyzed through process simulation. The results showed that the R-O-C exhibited higher H₂ production and process efficiency than the R-C-O, regardless of combustible gas type. However, the R-O-C produced CO₂ during the oxidation step due to heat release from the oxidation reaction. Using CH₄ as a combustible gas resulted in greater process efficiency than H₂ but led to increased CO₂ emissions, requiring additional CO₂ capture units. Among all cases studied, the R-O-C using CH₄ as a combustible gas achieved H₂ purity of 87% and process efficiency of 75% at a steam-to-carbon ratio (S/C) of 3, a calcium oxide-to-carbon ratio (CaO/C) of 1, and a nickel oxide-to-carbon ratio (NiO/C) of 0.5 at 600 °C and 1 bar.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153899"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Ca-deactivated of hydrogenation catalysts in ebullated bed for medium/low-temperature coal tar","authors":"Shun Li ,&nbsp;Na Liu ,&nbsp;Ming-Shan Ding ,&nbsp;Pan Zhang ,&nbsp;Xue-Li Huang ,&nbsp;Li-Jun Jin ,&nbsp;Ya-Ling Wang ,&nbsp;He Huang","doi":"10.1016/j.ijhydene.2026.153978","DOIUrl":"10.1016/j.ijhydene.2026.153978","url":null,"abstract":"<div><div>Medium/low-temperature coal tar from Xinjiang is characterized by a high Ca content, which leads to difficulties in achieving expected performance indicators for ebullated bed hydrogenation regeneration catalysts. This study analyzes the phase, valence, morphology, and composition of catalysts at different stages. During the hydrogenation process, the enrichment of Ca and Fe and their deposition forms on the catalyst are different, with CaS and FeS₂ depositing on the catalyst surface in a ‘thin shell’ form, which is the primary cause for deactivation. The deactivated catalyst is a kind of pseudo-deactivation, and most of its activity can be restored through tetrahydrofuran extraction. The deposition of CaO and FeO, accompanied by the loss of active metal Mo is the main reason for the poor performance of the regenerated catalyst. This mainly affects the increase of catalyst surface particles, as well as the decrease of pore structure and specific surface area. Direct thermal regeneration is not applicable to Ca-deactivated catalysts; instead, the precipitated Ca and Fe elements in the catalyst should be removed first. This study elucidates the primary mechanisms of catalyst deactivation caused by Ca and Fe, providing a foundation for the future regeneration of Ca-deactivated catalysts.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153978"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling hydrogen integration in energy system models: Best practices for policy insights","authors":"Muhammad Maladoh Bah ,&nbsp;Sheng Wang ,&nbsp;Mohsen Kia ,&nbsp;Andrew Keane ,&nbsp;Terence O'Donnell","doi":"10.1016/j.ijhydene.2026.153777","DOIUrl":"10.1016/j.ijhydene.2026.153777","url":null,"abstract":"<div><div>The rapid emergence of hydrogen in long-term energy strategies requires a broad understanding on how hydrogen is currently modelled in national energy system models. This study provides a review on hydrogen representation within selected energy system models that are tailored towards providing policy insights. This paper adopts a multi-layered review approach and selects eleven notable models for the review. In contrast to existing reviews of empirical studies, this study directly scrutinizes national energy system models that inform policy development and evaluates their treatment of hydrogen. The review covers hydrogen production, storage, transportation, trade, demand, modeling strategies, and hydrogen policies. The review suggests existing models would often opt for a simplified representation that can capture each stage of the hydrogen supply chain. This approach allows models to strike a balance between accuracy and preserving computational resources. The paper provides several suggestions for modeling hydrogen in national energy system models.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153777"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen solubility in aqueous solutions: A thermodynamic modeling approach using electrolyte equation of state","authors":"Li Sun ,&nbsp;Tingting Zhu ,&nbsp;Jierong Liang","doi":"10.1016/j.ijhydene.2026.153964","DOIUrl":"10.1016/j.ijhydene.2026.153964","url":null,"abstract":"<div><div>Accurate prediction of hydrogen solubility in aqueous solutions is essential for evaluating the feasibility and safety of underground hydrogen storage. This study applies an electrolyte version of the Cubic-Plus-Association (eCPA) Equation of State to model hydrogen solubility in both pure water and aqueous sodium chloride solutions. For hydrogen solubility in pure water (up to 497.5 K and 102.7 MPa), the model achieves a relative average deviation of 3.6%. In sodium chloride solutions (up to 373.9 K, 20.1 MPa, and 5.3 mol/kg), the deviation is further reduced to 2.7%. The model effectively captures key thermodynamic behaviors, including the salting-out effect, where ion hydration reduces gas solubility, and the temperature inversion phenomenon observed in pure water. This work establishes a robust thermodynamic framework for hydrogen storage applications and provides a foundational tool for analyzing phase equilibria in aqueous hydrogen systems.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153964"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of flame propagation distance on venting behaviors of H2–CH4-Air mixtures in sudden expansion–contraction ducts","authors":"Yuwen Wang ,&nbsp;Yongmei Hao ,&nbsp;Lingbin Xu ,&nbsp;Zixuan Zhao ,&nbsp;Zhixiang Xing ,&nbsp;Ning Xu","doi":"10.1016/j.ijhydene.2026.153976","DOIUrl":"10.1016/j.ijhydene.2026.153976","url":null,"abstract":"<div><div>To gain an in-depth understanding of the intrinsic relationship between pipeline cross-sectional structural changes and explosion characteristics, and to minimize the consequences of premixed gas explosion accidents, this study investigates the flame evolution, pressure dynamics, and discharge flow field evolution during the explosion of H₂–CH₄–air mixtures in sudden expansion–contraction ducts by varying the hydrogen content (<span><math><mrow><mi>H</mi><mi>C</mi></mrow></math></span>) and the flame propagation distance before the sudden expansion–contraction geometry. Particular emphasis is placed on the coupled effects of hydrogen content and flame propagation distance. The results indicate that regarding flame evolution, an increase in flame propagation distance accelerates the transition to a \"jellyfish-like\" flame structure, which completely disappears at a propagation distance of 880 mm. As the hydrogen content increases, the flame propagation speed rises significantly, with the most pronounced change observed at <span><math><mrow><mi>H</mi><mi>C</mi></mrow></math></span> = 40%. In terms of pressure dynamics, both the maximum explosion overpressure (<span><math><mrow><msub><mi>P</mi><mi>max</mi></msub></mrow></math></span>) and the maximum rate of pressure rise (<span><math><mrow><msub><mrow><mo>(</mo><mrow><mi>d</mi><mi>P</mi><mo>/</mo><mi>d</mi><mi>t</mi></mrow><mo>)</mo></mrow><mi>max</mi></msub></mrow></math></span>) initially increase and then decrease with increasing flame propagation distance, peaking at 380 mm and 580 mm, and consistently increase with higher hydrogen content. The pressure evolution is closely related to flame propagation and the microstructure of the discharge flow field. Increasing hydrogen content enhances flow field instability, with the most prominent \"flame cell\" structure observed during venting at <span><math><mrow><mi>H</mi><mi>C</mi></mrow></math></span> = 40%. Under the same hydrogen content, the flow field exhibits the densest cellular structure, the greatest density variation trend, and the highest turbulence intensity at flame propagation distances between 380 mm and 580 mm. The findings reveal the flame evolution, pressure dynamics, and discharge flow field behavior during pipeline venting explosions, providing key parameters for the safety design of hydrogen-blended natural gas pipelines.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153976"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case study for the stepwise conversion of a regional mid pressure natural gas network for hydrogen transmission","authors":"Adnan El Kharbotly ,&nbsp;Harm Kloosterman ,&nbsp;Martin van Agteren ,&nbsp;Marien de Haan ,&nbsp;Franco Ruzzenenti","doi":"10.1016/j.ijhydene.2025.153363","DOIUrl":"10.1016/j.ijhydene.2025.153363","url":null,"abstract":"<div><div>Hydrogen plays a central role in the Netherlands’ decarbonization strategy. Gasunie, the national transmission operator, is repurposing existing natural gas infrastructure to build a hydrogen network, with the high-pressure system expected by the 2030s. The next phase focuses on converting regional pipelines to support industry and residential areas. This research develops a methodology to assess regional pipeline suitability for hydrogen, using Groningen and Ameland as case studies. The framework evaluates material integrity, transmission velocity, pressure drop, and risks like diffusion, leakage, and fatigue. Nationally, 99.7 % of pipeline materials are suitable, though 4-inch pipelines post-1982 may contain unexaminable defects. Additionally, 23 pipelines (53.85 km) exceed velocity limits under extreme scenarios, and maximum hydrogen diffusion could reach 1.1⋅10² m³ H₂ per year in the worst case (no present oxide layer). The methodology enables a stepwise, cost-aware network conversion and offers a practical tool for transmission and district operators across the Netherlands and Europe.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"216 ","pages":"Article 153363"},"PeriodicalIF":8.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing dual functionality of quaternary metal sulfides by rare-earth doping: A comprehensive comparative study for supercapacitors and water splitting applications","authors":"Syeda Pakeeza Ibrar ,&nbsp;Abdulrahman G. Alhamzani ,&nbsp;Jehad S. Al-Hawadi ,&nbsp;Khuram Shahzad Ahmad ,&nbsp;Ram K. Gupta ,&nbsp;Bhumikaben Makawana ,&nbsp;Ehab A. Abdelrahman","doi":"10.1016/j.ijhydene.2026.153905","DOIUrl":"10.1016/j.ijhydene.2026.153905","url":null,"abstract":"<div><div>In current research, the effect of rare earth doping on quaternary metal sulfide complexes for supercapacitors and water splitting applications is studied. The rare earth-neodymium (Nd) doped and undoped NiS₂:Fe₇S₈:ZnS:Zr₉S₂ quaternary metal sulfide complexes are synthesized using diethyldithiocarbamate as single source precursor ligand. Successful synthesis of both complexes are verified using Fourier transform infrared spectroscopy, X-ray diffraction, Field emission electron microscopy and UV-visible spectroscopy. Cyclic Voltammetry shows an increase in specific capacitance from 93.19 F g⁻¹ for undoped complex to 157.58 Fg^-1 for Nd-Doped complex. The undoped complex possessess overpotential of 288 mV for OER while Nd-Doped complex possesses extremely low overpotential of 33 mV showing effectiveness of Neodymium doping. The undoped complex possesses overpotential for HER of −240 mV. The Nd-Doped complex fabricated electrode exhibites overpotential of −148mV. These results highlight the importance of neodymium dopant in enhancing the properties of quaternary metal sulfides for supercapacitors and water splitting applications.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"216 ","pages":"Article 153905"},"PeriodicalIF":8.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-criteria analysis for sustainable large-scale hydrogen production using methane pyrolysis: An energy efficient perspective","authors":"Swaprabha P. Patel ,&nbsp;Nawaz Ahmad ,&nbsp;Ashish M. Gujarathi","doi":"10.1016/j.ijhydene.2026.153823","DOIUrl":"10.1016/j.ijhydene.2026.153823","url":null,"abstract":"<div><div>Decarbonizing hard-to-abate industries requires efficient conversion technologies with minimal environmental impact. Methane pyrolysis (MP) offers a promising route for hydrogen (H₂) production without direct carbon dioxide (CO₂) emissions. However, robust optimization is essential to ensure its operational viability and environmental sustainability. This research presents a multi-objective optimization (MOO) framework for H₂ production via MP using Promax, aiming to maximize H₂ production while minimizing total energy consumption (TEC) and global warming potential (GWP). The optimized process yielded H₂ production of 6500–10,000 kg/h, with GWP ranging from 15,000 to 30,000 mPET_W2004, highlighting strong trade-offs between productivity and sustainability. Grey Relational Analysis identifies solutions that achieved H₂ flowrates above 9000 kg/h while moderating GWP and cost. Results show that higher methane and combustion gas flowrates enhance H₂ yield but significantly increase CO₂ emissions and GWP. Conversely, reductions in air and combustion flowrates under specific residence times cut emissions without compromising H₂ output.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"216 ","pages":"Article 153823"},"PeriodicalIF":8.3,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}