International Journal of Hydrogen Energy最新文献

{"title":"Thermodynamic analysis and investigation of phase evolution in the Mg–Ni–Ce system obtained by mechanical alloying and spark plasma sintering","authors":"Muкhamedova Nuriya ,&nbsp;Miniyazov Arman ,&nbsp;Sokolov Igor ,&nbsp;Ospanova Zhanna ,&nbsp;Uazyrkhanova Gulzhaz ,&nbsp;Sabyrtaeva Aisara ,&nbsp;Оken Ospan ,&nbsp;Bekmagambetova Balzhan","doi":"10.1016/j.ijhydene.2026.153846","DOIUrl":"10.1016/j.ijhydene.2026.153846","url":null,"abstract":"<div><div>A comprehensive thermodynamic and kinetic modeling, as well as an experimental investigation, was carried out for the Mg–Ni–Ce system aimed at applications as solid-state hydrogen storage materials. Based on CALPHAD calculations in Thermo-Calc for compositions Mg85Ni10Ce5, Mg90Ni7Ce3, and Mg95Ni3Ce2 in the temperature range of 450–500 °C, isothermal sections of the phase diagram of the Mg–Ni–Ce system were constructed, equilibrium phase regions were determined, and the optimal conditions for the formation of hydride-active intermetallics Mg₂Ni and Mg₁₂Ce phases were predicted. Diffusion modeling in DICTRA showed limited mutual diffusion depths (&lt;30 nm) over 180 s at 480 °C and a pronounced asymmetry of the Matano plane, caused by differences in the self-diffusion coefficients of Mg, Ni, and Ce. Experimentally, powders with the composition Mg90Ni7Ce3 were prepared by mechanical alloying at different ball-to-powder mass ratios (BPR = 10:1 and 30:1), followed by spark plasma sintering (SPS) at 500–560 °C, 1 MPa, for 5 min. X-ray diffraction (XRD) analysis revealed the sequential formation of Mg₂Ni and Ce–Mg phases during milling, accompanied by defect accumulation and distortion of the Mg crystal lattice. The intermetallic phase Ce₂Mg₁₇, absent after mechanical alloying, was detected only after SPS in the 480-500 °C range, indicating enhanced interaction between Ce and Ni under pulsed heating.</div><div>Comparison of the calculated phase diagrams with the experimentally observed phase evolution highlighted Mg-rich compositions near Mg95Ni3Ce2 and the temperature range of 480–500 °C as the optimal compromise between the thermodynamic stability of Mg₂Ni. Mg₁₂Ce intermetallics and controlled phase densification. The results provide a thermodynamically grounded approach to designing Mg–Ni–Ce systems for hydrogen storage and establish a basis for further studies on sorption–desorption behavior and cyclic stability within the selected compositional range.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153846"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187209","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":"Corrigendum to “Study on hydrogen embrittlement susceptibility of X80 steel through in-situ gaseous hydrogen permeation and slow strain rate tensile tests” [Int J Hydrogen Energy 48 (2023) 243–256]","authors":"Cailin Wang ,&nbsp;Jiaxuan Zhang ,&nbsp;Cuiwei Liu ,&nbsp;Qihui Hu ,&nbsp;Rui Zhang ,&nbsp;Xiusai Xu ,&nbsp;Hongchao Yang ,&nbsp;Yuanxing Ning ,&nbsp;Yuxing Li","doi":"10.1016/j.ijhydene.2026.153960","DOIUrl":"10.1016/j.ijhydene.2026.153960","url":null,"abstract":"","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153960"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403348","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":"Optimal configuration of a port integrated energy system considering the nonlinearity of hydrogen-blended gas turbines","authors":"Xianzhi Jia ,&nbsp;Yujia Song ,&nbsp;Dazhi Yang ,&nbsp;Qi Gao ,&nbsp;Jinjun Bai","doi":"10.1016/j.ijhydene.2026.153897","DOIUrl":"10.1016/j.ijhydene.2026.153897","url":null,"abstract":"<div><div>To address carbon emissions from global ports, this work constructs a low-carbon port integrated energy system (PIES) that combines solar power, hydrogen energy storage, hydrogen-blended gas turbine (HBGT), and carbon capture, utilization, and storage (CCUS). The proposed PIES leverages the complementarity among various energy components to achieve the optimal configuration with the minimum total annual cost and realize deep carbon reduction. A nested optimization algorithm integrating an improved PSO into a mixed-integer linear program is designed to address the nonlinearity introduced by the HBGT in the PIES configuration problem. More specifically, the PSO is used to optimize the dynamic blending ratio of hydrogen and natural gas, which resolves the modeling inaccuracy of conventional models that use a fixed ratio. A case study of a port in Dalian determines the optimal PIES configuration as follows: HBGTs rated at 7.040 MW, electrolyzers at 14.638 MW, hydrogen storage tanks with a capacity of 1881 kg, and carbon capture devices rated at 1.363 MW. Results indicate that considering nonlinear HBGT output increases its annual power supply by 15.33%, while reducing natural gas consumption by 3.74%, carbon emissions by 63.82%, and total annual cost by 1.38%. Incorporating CCUS raises the total annual cost by 10.98% but cuts carbon emissions by 87.96%.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153897"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186898","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":"Synergistic catalytic effects of Ti0.10Zr0.15V0.35Cr0.10Ni0.30 alloy and Pd/C composites on MgH2 hydrogen storage properties","authors":"Jiangtao He ,&nbsp;Xinwei Wang ,&nbsp;Ming Gao ,&nbsp;Yugang Su ,&nbsp;Hongsheng Jia","doi":"10.1016/j.ijhydene.2026.154031","DOIUrl":"10.1016/j.ijhydene.2026.154031","url":null,"abstract":"<div><div>Magnesium hydride (MgH₂) suffers from sluggish kinetics and high operational temperatures, hindering practical hydrogen storage. We pioneer a spatially decoupled catalytic strategy that assigns distinct roles to Ti₀.₁₀Zr₀.₁₅V₀.₃₅Cr₀.₁₀Ni₀.₃₀ (TA) alloy (bulk diffusion promoter) and Pd/C (surface dissociation catalyst), overcoming the inherent coupling of rate-limiting steps in MgH₂. This design achieves near-ambient absorption (4.56 wt% at 100 °C) and eliminates activation cycles—a milestone unattained by single-catalyst systems. Kissinger analysis confirms a 46.0% reduction in activation energy (78.8 kJ/mol) for the surface-limited step, directly validating the spatial separation of catalytic functions. Crucially, the composite retains 92.3% capacity after 30 cycles with negligible kinetic degradation (0.40% decay/cycle), eliminating the need for activation. This work establishes a spatially coupled catalytic mechanism that decouples surface and bulk processes, enabling a lower operating temperature for MgH₂.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 154031"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186907","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":"Achieving 9.7 wt% hydrogen mass fraction with enhanced adsorption in wavy alternating magnesium/chromium–titanium alloy monolayers","authors":"Xing Yang,&nbsp;Xuchang Zhang,&nbsp;Dan Cai,&nbsp;Yongpeng Xia,&nbsp;Chaohao Hu","doi":"10.1016/j.ijhydene.2026.153959","DOIUrl":"10.1016/j.ijhydene.2026.153959","url":null,"abstract":"<div><div>We report <em>ab initio</em> calculations of the relationship between the total energy and the Mg/Ti interlayer distance for symmetric and antisymmetric cases, and of the hydrogen-atom adsorption energy at Mg/Ti interfaces doped with Cr and V atoms. Bader charge analysis is performed for Cr doping, followed by total-energy calculations for a single hydrogen atom located in different positions within the Mg/Ti slab and at the interface. Furthermore, the density of states for each atom and orbital at the Mg/Ti interfaces is analyzed after Cr doping and hydrogen adsorption. Our findings reveal that the changes in adsorption energy are due to the reduction in charge inhomogeneity difference between the hydrogenated and non-hydrogenated states. The d-electrons of dopant elements (Cr, V) play a crucial role in forming chemical bonds and regulating charge inhomogeneity. In accordance with the novel theory, the slightly modified wave structure exhibits record hydrogen mass fraction (9.7 wt%) with recommended adsorption properties (−0.2 eV <span><math><mo>∼</mo></math></span> −0.8 eV). This work provides new insights into the classification, design, and engineering of hydrogen storage materials with improved adsorption energy.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153959"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186910","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":"Transport of hydrogen-blended natural gas in transmission pipelines under steady, slow-transient, and rapid-transient conditions","authors":"Pengbing Wang ,&nbsp;Yongjian Li ,&nbsp;Lin Yang ,&nbsp;Xin Tian ,&nbsp;Shaoguang Feng ,&nbsp;Fei Guo","doi":"10.1016/j.ijhydene.2026.153887","DOIUrl":"10.1016/j.ijhydene.2026.153887","url":null,"abstract":"<div><div>Hydrogen blending into existing natural gas infrastructure represents a practical pathway for large-scale hydrogen transport. A fully coupled non-isothermal transient flow model is developed to systematically investigate pipeline transport behavior across the full 0–100% hydrogen blending range. The model rigorously incorporates hydrogen-dependent thermophysical properties, thermal effects, and elevation influences. Steady, slow transient, and rapid transient conditions are systematically examined. The results indicate that, under constant energy delivery, pressure loss exhibits a non-monotonic dependence on hydrogen fraction, reaching a maximum at approximately 80% blending. System energy efficiency attains a minimum near 50%, while pressure fluctuations intensify within the 80–90% blending range, suggesting an unfavorable operating interval. During rapid transients, increasing hydrogen fraction accelerates pressure wave propagation and shortens recovery times, thereby enhancing the dynamic stability of the pipeline system.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153887"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186977","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":"Explosion dynamics of hydrogen-blended natural gas perturbed by CO2 injection in a closed duct","authors":"Yuchun Zhang,&nbsp;Wen Yang,&nbsp;Kun Zhang,&nbsp;Baoping Jiang,&nbsp;Xufeng Yang","doi":"10.1016/j.ijhydene.2026.153988","DOIUrl":"10.1016/j.ijhydene.2026.153988","url":null,"abstract":"<div><div>This study investigates flame propagation and overpressure dynamics of hydrogen-blended natural gas (hydrogen blending ratio, <em>X</em>_H2 = 0-0.8) perturbed by CO₂ injection in a closed duct. CO₂ was injected with an injection time (<em>t</em>_inject) varied from 0 to 600 ms, and an initial pressure of 1.00 MPa. Results show that CO₂ injection wrinkles the flame front by turbulent perturbations, promoting flame acceleration. Jet exhibits a stimulating effect, causing the most severe explosion at <em>t</em>_inject = 60 ms. As CO₂ injection exceeds 60 ms, the dilution effect gradually increases, weakening the turbulent enhancement and reducing the explosion intensity. CO₂ injection of 300 ms is a critical time, causing a transition from explosion-promoting to explosion-suppressing. For a given <em>X</em>_H2, the maximum overpressure and flame velocity first increase and then decrease with <em>t</em>_inject. Lower <em>X</em>_H2 requires a shorter injection time to reach the lowest flammability limit and exhibits greater sensitivity to CO₂ injection.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153988"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187057","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":"Optimal siting of wind powered green hydrogen production in Bangladesh using interval-valued T-spherical fuzzy multi-criteria decision-making method","authors":"Tausif Ali ,&nbsp;Ahmet Aytekin ,&nbsp;Mihail Demidionov","doi":"10.1016/j.ijhydene.2026.153931","DOIUrl":"10.1016/j.ijhydene.2026.153931","url":null,"abstract":"<div><div>The transition to a hydrogen-based energy system requires site-specific planning to ensure cost-effectiveness and sustainability. This study proposes an integrated framework combining Simple Weight Calculation (SIWEC) and Stable Preference Ordering Towards Ideal Solution (SPOTIS) within an interval-valued T-spherical fuzzy environment to identify optimal sites for wind-powered hydrogen production in Bangladesh. Ten years of ERA5 wind data at 100 m hub height were analyzed alongside techno-economic, climatic, geographical, socio-economic, and risk indicators derived from secondary sources and expert judgment. Results show moderate wind resources (3–5 m/s), with Noakhali, Thakurgaon, and Feni identified as the most suitable locations. The H165-4.0 MW turbine outperformed larger alternatives, yielding 58–68% higher energy output under local conditions. Sensitivity analysis reveals rectifier efficiency and discount rate as key drivers of levelized cost of hydrogen, while scenario analysis indicates a 47% cost reduction at top sites, highlighting policy and technology dependence.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153931"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187058","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":"Exergy and sustainability analysis of methylamine borane-enhanced gasoline fuel blends","authors":"Ahmet Yakın ,&nbsp;Taha Tuna Göksu ,&nbsp;Mehmet Gülcan","doi":"10.1016/j.ijhydene.2026.153700","DOIUrl":"10.1016/j.ijhydene.2026.153700","url":null,"abstract":"<div><div>This experimental study examines the energetic and exergetic performance of hydrogen-rich methylamine-borane (MAB) fuel blends in a spark-ignition gasoline engine. To assess the efficacy of solid-state hydrogen carriers, MAB was solubilized in ethanol and mixed with gasoline at volume ratios of 5% (MAB5) and 10% (MAB10). Experiments were performed at a constant speed of 2500 rpm across different engine loads: 0%, 25%, 50%, 75%, and 100%. The findings demonstrate that MAB5 attained the highest exergy efficiency of 18.87% at full load, surpassing gasoline at 16.77% and MAB10. The observed efficiency gain results from the thermal decomposition of MAB, which releases hydrogen and enhances combustion kinetics, consequently minimizing thermodynamic irreversibilities within the system. As a result, MAB5 demonstrated the least entropy generation and exhaust exergy losses in comparison to the gasoline fuel. Increasing the additive ratio to 10% (MAB10) led to a decrease in exergetic performance, attributable to physicochemical constraints, thereby underscoring a significant tradeoff between hydrogen enrichment and fuel properties. MAB5 fuel was more efficient than others in the Sustainability Index results, which emphasize the importance of environmental impacts, with a high score of 1.23. The study presented showed that MAB fuels at low concentrations can be an effective source of hydrogen and could be practically applied in conventional spark-ignition engines to improve fuel efficiency and reduce environmental impact without requiring extensive engine modifications.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153700"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146147519","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":"Research on contact pressure uniformity and current density uniformity based on topology optimization and topology structure prediction method","authors":"Wei Jiang ,&nbsp;Kai Zhang ,&nbsp;Yong Li ,&nbsp;Bailin Zheng ,&nbsp;Yue Kai","doi":"10.1016/j.ijhydene.2026.153745","DOIUrl":"10.1016/j.ijhydene.2026.153745","url":null,"abstract":"<div><div>To enhance the uniformity of contact pressure and current density at the interface of proton exchange membrane fuel cell (PEMFC), this paper proposes a topology optimization method and a topology structure prediction approach. First, the end plate (EP) topology is optimized with the objective of maximizing its stiffness while constraining the minimum displacement at the contact interface between the bipolar plate (BPP) and the membrane electrode assembly (MEA). Second, structural and electrochemical simulations are conducted to analyze the uniformity of contact pressure at the BPP-MEA interface and the current density uniformity of the MEA before and after optimization. The results demonstrated that the uniformity of contact pressure and current density improved by 48.5 % and 29 %, respectively. Furthermore, it is observed that the interface contact stiffness exhibited a strong correlation with the topology-optimized structure. Based on this finding, a topology structure prediction method is developed by integrating contact stiffness distribution, equivalent compression stiffness algorithms, and topology optimization theory. A case study involving a sandwich structure revealed that the predicted structure achieved a 23.1 % improvement in the uniformity of interface contact pressure. Overall, this study provides methodological guidance for enhancing the uniformity of contact pressure and current density at PEMFC interface in engineering applications and offers theoretical support for predicting topology structures.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153745"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186897","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}