International Journal of Hydrogen Energy最新文献

{"title":"Synthesis and Electrochemical Performance of PrBa0.5Sr0.5Co1.5Fe0.5O5+δ double perovskite cathode material for Solid Oxide Fuel Cell","authors":"I-Ming Hung ,&nbsp;Debabrata Mohanty ,&nbsp;Yu-Rou Lin ,&nbsp;Sheng-Wei Lee ,&nbsp;Chung-Jen Tseng ,&nbsp;Yi-Wen Chen","doi":"10.1016/j.ijhydene.2025.06.124","DOIUrl":"10.1016/j.ijhydene.2025.06.124","url":null,"abstract":"<div><div>The material and electrochemical properties of PrBa_0.5Sr_0.5Co_1.5Fe_0.5O_5+δ (PBSCF) are investigated in this study to better understand its potential as a high-performance cathode material. The oxidation state of PBSCF, a critical factor influencing electrode performance is analyzed using X-ray photoelectron spectroscopy (XPS) at both room temperature and intermediate temperatures. The results reveal an increased surface oxidation state at elevated temperatures. Thermal gravimetric analysis (TGA) indicates weight loss after three consecutive thermal cycles, suggesting structural and compositional changes. Furthermore, PBSCF exhibits excellent electrical conductivity, reaching 427.8 S cm⁻¹ at 600 °C with a minimal degradation rate of 0.21 % over 100 h of operation. The area-specific resistance of a symmetrical PBSCF cell is measured at 0.071 Ω cm² at 800 °C, highlighting its promise for intermediate-temperature solid oxide fuel cells (IT-SOFCs).</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 371-379"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243167","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 large-scale power-to-H2-to-power system adopting hydrogen mixed gas turbine for wind accommodation: Process modeling, optimal dispatch and economic feasibility analysis","authors":"Yanxin Li ,&nbsp;Xiaoqu Han ,&nbsp;Yiming Zhang ,&nbsp;Nikolaos Skordoulias ,&nbsp;Xuanhua Guo ,&nbsp;Junjie Yan ,&nbsp;Sotirios Karellas ,&nbsp;Emmanuel Kakaras","doi":"10.1016/j.ijhydene.2025.06.034","DOIUrl":"10.1016/j.ijhydene.2025.06.034","url":null,"abstract":"<div><div>The high percentage of renewable energy penetration poses volatility and intermittency challenges, making it imperative to explore pathways for large-scale green hydrogen production and utilization. In the present work, a novel power-to-H₂-to-power (PtH2tP) system is proposed for onshore wind accommodation, incorporating hydrogen mixed gas turbines (HMGTs). An innovative methodology integrating economic and carbon emissions assessment with optimal dispatch is developed, in which the HMGT off-design operational characteristics and policy compensation for green hydrogen are considered. A case study in China demonstrates the feasibility of the PtH2tP system in achieving flexible energy conversion and hydrogen self-sufficiency. Particularly, a levelized cost of electricity of 0.0537 €/kWh and carbon emissions of 0.29 kg CO₂ eq/kWh are observed. The fuel consumption of HMGTs and purchased grid electricity are significant contributors to carbon emissions. A comprehensive sensitivity analysis indicates an optimal hydrogen substitution ratio of 31% as the threshold for balancing economics and environmental benefits.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 345-357"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243384","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":"The reclaimable hydrogels space-limited Ni-based/CdZnS to overcome photo-oxygen corrosion for efficient hydrogen production from solar energy","authors":"Huanyu Chen ,&nbsp;Xingyu Huo ,&nbsp;Jun Wang ,&nbsp;Qiuyu Wang ,&nbsp;Ziwen Wang ,&nbsp;Bo Lv","doi":"10.1016/j.ijhydene.2025.06.035","DOIUrl":"10.1016/j.ijhydene.2025.06.035","url":null,"abstract":"<div><div>A hydrogel CZS/NiS@HR for photocatalytic hydrogen production is fabricated through solvothermal synthesis of CdZnS (CZS) composites, followed by physical cross-linking and self-assembly. This material facilitates spatially oriented charge separation via heterojunctions, effectively suppressing electron-hole recombination. The hydrogen evolution rate reaches 65 mmol/g/h, with stable catalytic activity maintained at 45 mmol/g/h after five cycles. The hydrogel structure prevents the release of toxic Cd²⁺ into the environment. Compared to CZS, the UV absorption edge of CZS/NiS@HR is significantly redshifted, confirming successful Ni-based heterojunction surface modification. The three-dimensional network of the hydrogel enhances H⁺ diffusion, thereby improving photocatalytic hydrogen production efficiency while mitigating sulfide photo-oxygen corrosion and reducing catalyst costs. This study underscores the synergistic effects of heterojunctions and hydrogels in promoting sustainable photocatalytic hydrogen production.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 380-387"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243385","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 hybrid decision-making framework for renewable-hydrogen energy storage integration: Enhancing economic and energy security","authors":"Pin Liu ,&nbsp;Said Khalfa Brika ,&nbsp;Karimzada Mehriban Vagif ,&nbsp;Ulugbek Yusupov ,&nbsp;Zheng Jeang","doi":"10.1016/j.ijhydene.2025.05.222","DOIUrl":"10.1016/j.ijhydene.2025.05.222","url":null,"abstract":"<div><div>The growing demand for low-carbon and resilient energy systems has intensified the focus on hybrid renewable-hydrogen energy storage solutions. This study develops a hybrid decision-making framework that integrates technical optimization and economic analysis to assess the feasibility of combining photovoltaic (PV) generation, battery storage, and hydrogen-based systems in residential applications. Emphasizing the dual goals of economic efficiency and energy security, the framework incorporates multi-criteria decision analysis (MCDA) and simulation modeling to evaluate alternative system architectures under varying climatic, load, and policy scenarios. Application of the framework to residential use cases in cold-climate regions, such as northwestern Canada, reveals that hybrid systems combining PV arrays with modular hydrogen storage and strategically sized battery banks outperform standalone configurations in both cost-effectiveness and reliability. In particular, systems with dynamic load balancing and hydrogen backup offer improved energy autonomy during peak demand and seasonal intermittency. Sensitivity analysis highlights the influence of solar irradiance variability, electricity pricing, and technology cost trends on system viability. The findings underscore the potential of hybrid renewable-hydrogen configurations to enhance energy self-sufficiency, reduce lifecycle emissions, and support long-term sustainability goals in decentralized residential energy systems. The proposed framework provides a replicable tool for policymakers, engineers, and urban planners to guide future investments in integrated energy infrastructure.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"144 ","pages":"Pages 482-495"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241698","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":"Machine learning-aided optimal energy management of a Solar-to-X energy system based on hydrogen production/storage and CAES","authors":"Mohammad Nadeem Khan","doi":"10.1016/j.ijhydene.2025.05.418","DOIUrl":"10.1016/j.ijhydene.2025.05.418","url":null,"abstract":"<div><div>The present work introduces a highly integrated smart solar-based system for reliable and sustainable electricity and cooling productions without relying on environmentally and economically unsustainable battery storage. Hydrogen functions as an energy carrier in this system, storing surplus solar energy via the thermochemical vanadium chloride cycle and facilitating stable operation amid intermittent solar energy. The system is also integrated with compressed air energy storage and high- and low-grade thermal energy recovery subsystems to generate power and cooling via absorption cycles. Compressed air energy storage facilitates the storage of surplus solar energy in mechanical form, allowing for power generation during times of diminished solar availability. It recuperates the compression heat via intercoolers and an aftercooler, which is subsequently utilized to power the absorption power cycle and the single-effect absorption chiller, substantially enhancing exergy efficiency and guaranteeing no waste of valuable heat. The proposed smart integration's thermodynamic/economic/environmental indicators are comprehensively assessed to analyze the practicality. Then, optimal energy management/conversion is achieved through machine learning-aided multi-criteria optimization by applying a non-dominated sorting genetic algorithm. The main goal of this work is to optimize the thermo-economic and exergy performance of a novel solar-driven hybrid energy system integrating Compressed air energy storage and a vanadium-chlorine hydrogen production cycle using a machine learning-aided NSGA-II optimization strategy to minimize cost and maximize exergy efficiency. The results show that the system can store more energy from solar fields in the Compressed air energy storage and hydrogen storage systems, making it better able to harvest energy from fields. Heliostat and vanadium chloride cycles have the maximum exergy destruction because of the temperature difference and chemical reaction. Under the most optimal conditions, the system achieves a 65.8 % exergetic round trip efficiency and a unit product cost of $16.3 per GJ.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 446-459"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243166","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":"Recent advances in g–C3N4–Based composites for photocatalytic hydrogen production","authors":"Zhongping Yuan ,&nbsp;Boting Yan ,&nbsp;Mingyang Li ,&nbsp;Zhaoyang Wu ,&nbsp;Lili Xin ,&nbsp;Xiangpeng Gao","doi":"10.1016/j.ijhydene.2025.06.104","DOIUrl":"10.1016/j.ijhydene.2025.06.104","url":null,"abstract":"<div><div>The escalating global energy crisis and environmental degradation underscore the urgent need for sustainable hydrogen production. Photocatalytic water splitting, leveraging solar energy to generate hydrogen, presents a green, low-energy solution. Traditional photocatalysts, such as TiO₂, ZnO, and CdS, are constrained by their limited light absorption, rapid electron-hole recombination, and stability concerns. Graphitic carbon nitride (g-C₃N₄) has emerged as a promising alternative due to its broad light absorption spectrum, cost-effectiveness, and chemical stability. However, pure g-C₃N₄ suffers from low charge separation efficiency and surface activity. To address these limitations, advanced modification strategies, including morphology control, elemental doping, and heterojunction construction, have been developed. These strategies enhance light absorption, optimize band structures, promote carrier separation, and introduce active sites, thereby significantly boosting photocatalytic hydrogen evolution. This review systematically summarizes recent advancements in the synthesis, mechanisms, and performance of g-C₃N₄ composites, highlighting their role in improving hydrogen production efficiency. It critically analyzes the interplay between structural modifications and catalytic activity, addressing challenges in stability, scalability, and cost-effectiveness. Future research directions are proposed, emphasizing scalable synthesis techniques, long-term durability assessments, and integration with industrial applications to fully realize the potential of g–C₃N₄–based systems in sustainable energy.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 412-432"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243599","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":"Predicting hydrogen storage in metal-organic frameworks using a novel hybrid machine learning model","authors":"Zi-Hao Cao ,&nbsp;Xiao-Qiang Bian ,&nbsp;Jing Chen ,&nbsp;Jian-Ye Zhang ,&nbsp;Wei Fu","doi":"10.1016/j.ijhydene.2025.06.112","DOIUrl":"10.1016/j.ijhydene.2025.06.112","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) are a class of materials that possess distinctive structural characteristics, which has led to their extensive utilisation in the field of hydrogen storage research. In this study, the most extensive database available to date was constructed by accumulating 2048 real data points. The database was then subjected to a rigorous filtration process, which involved the use of isolated forests detection method to identify and exclude 102 anomalies. Six hybrid models were proposed for training, integrating light gradient boosting machine (LightGBM) and back propagation neural networks (BPNN) with hike optimisation algorithms (HOA), bloodsucking leech optimisation (BSLO) and improved grey wolf optimisation (IGWO). Temperature, pressure, pore volume and Brunner−Emmett−Teller (BET) surface area were employed as input parameters for these models. The HOA-LightGBM model, when applied to the dataset with isolated forest detection method, demonstrated the highest performance among the six hybrid models, exhibiting an <em>R</em>^<em>2</em> of 0.9921, a root mean square error of (<em>RMSE</em>) 0.1631, and an average absolute relative deviation of (<em>AARD</em>) 3.90 %, and a mean absolute error (<em>MAE</em>) of 0.1010. Furthermore, the HOA-LightGBM model attained a minimum runtime of 25.18 s and a minimum memory consumption of 2.79 GB. Following leverage analysis, 98.9 % of the data points were classified as useable. Shapley additive explanation (SHAP) indicates that pressure is the primary factor contributing to hydrogen storage. The HOA-LightGBM model has the capacity to swiftly and accurately predict the hydrogen storage capacity of MOF materials, thereby significantly reducing the cost and time of experiments. Overall, the paper sets out six hybrid models which innovatively combine novel optimisation algorithms to provide more practical models for future hydrogen storage materials and related fields.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 401-411"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243216","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":"The study of NiFeMo on nickel foam as cathode material for alkaline water electrolyser","authors":"Yakubu Sawadogo Adam ,&nbsp;Murat Farsak ,&nbsp;Gülfeza Kardaş","doi":"10.1016/j.ijhydene.2025.05.433","DOIUrl":"10.1016/j.ijhydene.2025.05.433","url":null,"abstract":"<div><div>In this study, high efficiency of a ternary electrocatalyst NiFeMo electrodeposited on a nickel coated nickel foam was researched to be used as cathode material in AEM alkaline water electrolyser. The electrocatalytic activity was studied with electrochemical techniques such as linear sweep voltammetry (LSV), Electrochemical Impedance Spectroscopy (EIS), Cyclic Voltammetry and Chronopotentiometry. Also, Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) analysis were used to characterize the surface morphology which showed successful deposition of the catalysts. Tafel slopes were obtained as 212 mV dec⁻¹, 216 mV dec⁻¹ and 185 mV dec⁻¹ for foam, #Ni and NiFeMo#Ni respectively. In addition, the catalyst was tested in a glass cell with a Fumasep membrane and the volume of hydrogen gas obtained was the highest compared to the foam and Ni.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 388-394"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243598","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 rebreathing exhaust gas strategy on performance behaviors of the hydrogen enriched natural gas spark ignition","authors":"Linxun Xu ,&nbsp;Jingping Liu ,&nbsp;Xiongbo Duan ,&nbsp;Haibo Liu ,&nbsp;Tamer M.M. Abdellatief","doi":"10.1016/j.ijhydene.2025.06.065","DOIUrl":"10.1016/j.ijhydene.2025.06.065","url":null,"abstract":"<div><div>Recently, more stringent emission regulations and laws are introduced in the transportation section for further reducing the toxic emissions and carbon dioxide emission. These strict regulations promote the technology advancement of the internal combustion engine through in-cylinder combustion process optimization and out-cylinder exhaust emissions after-treatment system. However, the renewable fuels, such as green hydrogen, are encouraged to employ in the transport sector for achieving near-zero carbon emission. In this paper, the effect of hydrogen energy share on the fuel economy and NOx emissions of the hydrogen enriched natural gas (HENG) spark ignition (SI) engine are experimentally investigated under different loads. Then, the full-size one-dimensional (1D) simulation model of the HENG SI engine is built according to the layout of this test engine. Last, various rebreathing exhaust gas strategies are numerically investigated according to the calibrated and validated 1D simulation model. The results indicated that the combustion efficiency of the HENG SI engine is reduced about 0.7 %, 1.5 %, and 1.8 % with using rebreathing exhaust gas strategy @A to rebreathing exhaust gas strategy @C compared to the original exhaust valve lift (EVL). In addition, the NOx emissions of the HENG SI engine could reduce by 79.7 % with adopting the rebreathing exhaust gas strategy @A compared to the original EVL, while the brake specific fuel consumption of the HENG SI engine is increased by 0.29 %, without sacrificing too much its fuel economy. Thus, the performance and exhaust emissions could be trade-off well in the HENG SI engine with using the optimized rebreathing exhaust gas strategy.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 359-370"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243219","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":"Assessing the economic feasibility of hydrogen energy: Hydropower and green hydrogen solutions","authors":"Jing Niu ,&nbsp;Xiaowei Zhang ,&nbsp;Shuli Liu","doi":"10.1016/j.ijhydene.2025.06.053","DOIUrl":"10.1016/j.ijhydene.2025.06.053","url":null,"abstract":"<div><div>This paper examines the utilization of surplus energy produced by wind farms and small hydropower plants (SHPs) to evaluate the financial viability of green hydrogen generation in China over the period 2015 to 2024. The study employs life cycle assessment (LCA) and techno-economic analysis (TEA) to assess potential applications in transportation, natural gas infrastructure, energy storage capacity, and hydrogen production feasibility. Two production scenarios—3 % and 5 % of surplus electricity—are modelled to project profitability and output. Based on related energy yields of approximately 16,000 MWh and 9340 MWh per day, the results demonstrate that wind farms can generate up to 7.66 MNm³/day and SHPs up to 5.95 MNm³/day of hydrogen. The economic analysis indicates potential revenues for wind-derived hydrogen ranging from 36.22 to 518.93 USD/kg, and for SHP-derived hydrogen from 263.96 to 342.42 USD/kg. These findings underscore China's growing capacity to integrate green hydrogen into its low-carbon energy transition, thereby enhancing energy security and advancing national carbon neutrality objectives through the strategic utilization of renewable resources.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"145 ","pages":"Pages 433-445"},"PeriodicalIF":8.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243386","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}