International Journal of Hydrogen Energy最新文献

{"title":"Efficient separation of charge carriers in the C–S bonded COF@Co9S8 S-scheme heterostructure for enhancing the photocatalytic H2 and H2O2 production","authors":"Jingwen Zhang,&nbsp;Simin Li,&nbsp;Hao Wu,&nbsp;Ying Peng,&nbsp;Yuanyuan Li,&nbsp;Puhui Deng,&nbsp;Linping Zhang,&nbsp;Yu Hou","doi":"10.1016/j.ijhydene.2025.04.350","DOIUrl":"10.1016/j.ijhydene.2025.04.350","url":null,"abstract":"<div><div>Constructing S-scheme heterojunction is an effective strategy to overcome the limitation of covalent organic frameworks (COFs) materials caused by the rapid recombination of photogenerated carriers in photocatalytic applications. In this work, an organic-inorganic heterojunction hybrid with a puff-like nanoflower sphere structure was successfully fabricated by growing COF on the surface of Co₉S₈. These two components are linked by C–S bonds, which effectively enhances the transfer and separation of charge carriers. Under visible light irradiation, COF@Co₉S₈ can act as an excellent dual-functional catalyst for both photocatalytic hydrogen (H₂) and hydrogen peroxide (H₂O₂) production. The reasonable charge transfer path of the S-scheme heterojunction has been verified through various experiments and theoretical calculation. This research provides a valuable perception for designing organic-inorganic S-scheme heterojunctions based on 2D porous materials for efficient solar energy conversion.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"130 ","pages":"Pages 33-44"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863923","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":"Numerical investigation of the effects of pressure on NO formation characteristics for a H2/Air micromix flame","authors":"Cheng Lu ,&nbsp;Yajin Lyu ,&nbsp;Chang Xing ,&nbsp;Li Liu ,&nbsp;Penghua Qiu ,&nbsp;Linyao Zhang","doi":"10.1016/j.ijhydene.2025.04.332","DOIUrl":"10.1016/j.ijhydene.2025.04.332","url":null,"abstract":"<div><div>The present work numerically studies the effect of pressure on NO formation characteristics for a H₂/Air micromix flame. The NO emission increases as pressure increasing at high flame temperature condition (over 2300 K), which decreases as pressure increasing at low flame temperature condition (below 1800 K). In addition, NO emission has a peak value at 0.5 MPa when the flame temperature is medium (between 1800 and 2300 K). The change of pressure has slight impact on the ratio of NO from thermal route, and it reduces the ratio of NO from NNH route. However, it increases the ratio of NO from other route. Moreover, when the pressure is between 0.1 MPa and 0.5 MPa, the change of flame temperature dominates the generation of NO emission. When the pressure is in the range of 0.5 MPa–2.0 MPa, the change of radical concentration (OH, H, O et al.) dominates the generation of NO emission. In general, the increase of pressure obviously promotes the consumption of H in middle and low flame temperature zone, and the consumption of H in high flame temperature zone reduces.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"130 ","pages":"Pages 9-16"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863925","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":"Green façades, enduring dependencies: European Union's battery and hydrogen strategies as modern neocolonialism","authors":"Alberto Boretti","doi":"10.1016/j.ijhydene.2025.04.260","DOIUrl":"10.1016/j.ijhydene.2025.04.260","url":null,"abstract":"<div><div>The European Union's parallel strategies for achieving “strategic autonomy” in battery production and green hydrogen deployment, despite their framing as cornerstones of energy independence and decarbonization, demonstrate profound structural similarities that are deeply rooted in external dependencies and neocolonial logic. This letter contends that the pursuit of domestic capacity in these vital green sectors fundamentally relies on securing vast flows of critical raw materials, which are integral not only to batteries but also to the renewable energy generation and electrolyzer technologies underpinning both hydrogen and battery pathways. Furthermore, these ambitions depend on accessing immense renewable energy resources, which are often envisaged for import in the form of green hydrogen, its derivatives, or electricity, predominantly from the Global South. Both ambitions are further challenged by significant “ambition” and “implementation” gaps, compounded by prohibitive energy requirements for manufacturing and underdeveloped infrastructure for both resource circularity and energy distribution. The letter argues that the European Union's inward focus on capacity, which is ultimately constructed upon a foundation of external resource extraction and potentially inequitable energy agreements, risks replicating historical modes of unequal exchange and the externalization of environmental burdens. An analysis of neocolonial mechanisms, ranging from debt regimes and trade imbalances to land acquisition and conditional finance, reveals that the European Union's current green transition pathways risk functioning as “green colonialism,” thereby potentially entrenching global inequalities rather than cultivating a truly just energy future. Consequently, attaining genuine sustainability necessitates the deconstruction of these neocolonial frameworks and the nurturing of equitable global partnerships that can genuinely supersede the limitations of isolated European Union “autonomy”.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"129 ","pages":"Pages 193-198"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869834","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":"First-principles calculations on the physical properties of Zr-based perovskites LiZrH3 and KZrH3 for potential hydrogen storage applications","authors":"A. Candan ,&nbsp;S. Akbudak","doi":"10.1016/j.ijhydene.2025.04.189","DOIUrl":"10.1016/j.ijhydene.2025.04.189","url":null,"abstract":"<div><div>Hydrogen is a promising alternative to fossil fuels due to its abundance on Earth, clean-burning properties, and non-toxic nature. However, developing efficient storage solutions remains a major challenge. Perovskite-type hydrides have attracted significant interest as potential solid-state hydrogen storage materials, owing to their high storage density and safety advantages. In this study, Density Functional Theory is employed to conduct a comprehensive investigation of the structural, dynamic, mechanical, and optoelectronic properties of XZrH₃ (X = Li and K) to assess their suitability for hydrogen storage. Electronic structure analysis reveals that both materials exhibit metallic behavior. Mechanical properties such as bulk modulus (<em>B</em>), shear modulus (<em>G</em>), Cauchy pressure (<em>C</em>_<em>P</em>), <em>B/G</em> ratio, and Young's modulus (<em>E</em>) are calculated using the Voigt-Reuss-Hill approach. The results indicate that LiZrH₃ exhibits ductile behavior, while KZrH₃ is characterized as brittle. Both compounds are thermodynamically and mechanically stable, as confirmed by their negative formation enthalpies and elastic constants. Furthermore, the calculated gravimetric hydrogen storage capacities of LiZrH₃ and KZrH₃ are 2.99 wt% and 2.27 wt%, respectively, with estimated hydrogen desorption temperatures of 473.76 K and 421.06 K. These findings support the potential of Zr-based perovskite hydrides for next-generation hydrogen storage technologies.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"129 ","pages":"Pages 199-210"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869975","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-assisted catalyst synthesis and hydrogen production via catalytic hydrolysis of sodium borohydride","authors":"Xiangyu Song ,&nbsp;Shuoyang Wang ,&nbsp;Fan Wang ,&nbsp;Yingwu Liu ,&nbsp;Zongliang Zuo ,&nbsp;Siyi luo ,&nbsp;Dong Chen ,&nbsp;Fangchao Zhao","doi":"10.1016/j.ijhydene.2025.04.286","DOIUrl":"10.1016/j.ijhydene.2025.04.286","url":null,"abstract":"<div><div>As a clean and renewable energy source, hydrogen plays a crucial role in achieving sustainable energy goals. However, the high cost of hydrogen production remains a major challenge. Therefore, research into hydrogen production technology is of significant importance. Sodium borohydride (NaBH₄), due to its potential to generate hydrogen through hydrolysis, is widely recognized as an efficient hydrogen storage material. In this study, the Co–P–B/ZIF-67 catalyst was successfully prepared using a chemical reduction method, and for the first time, machine learning technology was applied to predict and optimize the NaBH₄ hydrolysis hydrogen production process. The findings reveal that the hydrogen production yield of Co–P–B/ZIF-67 is 8.86 times that of traditional Co–P–B and 0.065 times that of ZIF-67, demonstrating a notable catalytic advantage.Additionally, parameters such as catalyst dosage and reactant concentration were found to significantly impact the time required to reach saturated hydrogen production. Through machine learning optimization, it was discovered that increasing the Na⁺ concentration can substantially enhance hydrogen production. However, ZIF-67 may occupy some of the active sites of Co–P–B, thereby weakening the catalytic efficiency to some extent. Among the models tested, the random forest algorithm performed the best, with an R² value ranging from 0.956 to 0.995, and the number of outliers was reduced from 9 to 0 after optimization, greatly improving the prediction accuracy and stability. Furthermore, machine learning was employed to analyze the mechanism by which different reaction conditions influence hydrogen production, providing new theoretical foundations and technical support for catalyst design and optimization.This interdisciplinary approach not only showcases the immense potential of machine learning in predicting complex chemical reactions but also offers new insights for practical applications in hydrogen energy production.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"129 ","pages":"Pages 130-149"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869830","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":"Effect of rare earth hydrides on hydrogen absorption and desorption properties of CeMgNi hydrogen storage alloy","authors":"Zhu Jiaqi ,&nbsp;Xu Jin ,&nbsp;Li Ruihan ,&nbsp;Yang Yifei ,&nbsp;Bai Junyu ,&nbsp;Hu Feng ,&nbsp;Wang Li","doi":"10.1016/j.ijhydene.2025.04.287","DOIUrl":"10.1016/j.ijhydene.2025.04.287","url":null,"abstract":"<div><div>This study focuses on the preparation of the CexMg_2-xNi hydrogen storage alloy (where x = 0, 0.2, 0.3, 0.4, 0.5) through the method of vacuum induction melting. The research examined the influence of varying Ce concentrations on the characteristics of the Mg₂Ni hydrogen storage alloy. The phase structure and microstructure of the synthesized alloys were characterized through X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The kinetic and thermodynamic characteristics of samples subjected to various environmental conditions were assessed using a PCT tester. Additionally, DSC curves for samples heated at rates of 5 K/min, 10 K/min, 15 K/min, and 20 K/min were obtained through TG. The results indicated that the CeMgNi₄ phase, which arises from the partial substitution of Mg with Ce, did not engage in the hydrogen absorption and desorption processes, leading to a reduction in hydrogen storage capacity to a certain extent. Nevertheless, The enhancement of the overall hydrogen storage performance of the CeMgNi hydrogen storage alloy was significantly correlated with the increased content of the CeMgNi₄ phase.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"130 ","pages":"Pages 17-32"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863924","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":"CFD-DEM simulation of dynamic temperature effects on catalytic methane steam reforming using GBFS","authors":"Shen Li ,&nbsp;Hanwen Kou ,&nbsp;Yanzhuo Hu,&nbsp;Shaohui Han,&nbsp;Zisheng Li,&nbsp;Junguo Li,&nbsp;Xing Huang,&nbsp;Yan Lin,&nbsp;Xin Yao","doi":"10.1016/j.ijhydene.2025.04.242","DOIUrl":"10.1016/j.ijhydene.2025.04.242","url":null,"abstract":"<div><div>This study employs CFD-DEM simulations to investigate the methane steam reforming process catalyzed by Granulated Blast Furnace Slag (GBFS) and tracks the temperature fluctuations of GBFS particles. The effects of mixed gas velocity, particle size, particle temperature, steam-to-carbon (S/C) ratio, and pressure on the reaction process are explored. The results show that higher S/C ratios and GBFS particle temperatures enhance the reaction rate and hydrogen production, while gas velocity and pressure have minimal effects. An increase in GBFS particle size leads to a decrease in reaction rate and reduces temperature fluctuations. Additionally, a reaction pathway for methane steam reforming is proposed. These findings provide valuable insights into the chemical recovery of waste heat from GBFS.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"129 ","pages":"Pages 211-221"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869972","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":"Revealing high-performance supercapacitor: Synergistic cobalt sulfide/reduced graphene oxide nanocomposite for enhanced energy storage","authors":"Uma Bharathy R ,&nbsp;Govindaraj Rajamanickam ,&nbsp;Mrunal Deshpande ,&nbsp;Jothika B","doi":"10.1016/j.ijhydene.2025.04.295","DOIUrl":"10.1016/j.ijhydene.2025.04.295","url":null,"abstract":"<div><div>Transition metal sulfide-based electrodes are crucial for energy storage due to their straightforward synthesis, fast redox switching, and high conductivity. The cobalt sulfide/reduced graphene oxide (Co₃S₄/rGO) nanocomposite is prepared using a single-step hydrothermal process, analysed by X-ray diffraction, Raman spectroscopy, and Electron microscopy, which verifies its crystalline structure and effective integration. X-ray photoelectron spectroscopy confirms the chemical composition and Brunauer-Emmett-Teller analysis measures surface area and pore size distribution. In a three-electrode system, Co₃S₄ delivers a specific capacitance of 815 F/g, while Co₃S₄/rGO achieves 1560 F/g at 1 A/g, attributed to a synergistic effect, with 89% retention over 5000 cycles at 6 A/g. As a two-electrode asymmetric supercapacitor, it delivers 113 F/g at 1 A/g, with an energy density of 40.2 Wh/kg and a power density of 804 W/kg, maintaining 82% stability over 12,000 cycles at 6 A/g, showcasing its potential for supercapacitors applications.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"129 ","pages":"Pages 38-50"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863330","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":"Tailoring the numerous intimate sites between the interfaces of CoCu-LDH@FeNi2S4–FeNiS2@CoNi2S4/NF heterogeneous electrode: Monitoring the synergistic interplay and connecting the dots for alkaline water electrolysis","authors":"Ujjwal Phadikar ,&nbsp;Bholanath Panda ,&nbsp;Srijib Das ,&nbsp;Debasis Dhak ,&nbsp;Aniruddha Kundu ,&nbsp;Naresh Chandra Murmu ,&nbsp;Tapas Kuila","doi":"10.1016/j.ijhydene.2025.04.325","DOIUrl":"10.1016/j.ijhydene.2025.04.325","url":null,"abstract":"<div><div>Electrochemical water-splitting in alkaline medium has gained massive attention for generating large-scale renewable hydrogen. Yet, it encounters challenges such as poor stability and high voltage at higher current density, particularly for insufficient electron transport kinetics. Therefore, the practical application of water electrolysis, a resilient electrocatalyst with superior efficiency and maximum metal utilization, is essential. In this research, a rational design of quadruple-phase interface-derived noble-metal-unbounded hierarchical 3D-interconnected multi-layered heterostructure CoCu-LDH@FeNi₂S₄–FeNiS₂@CoNi₂S₄/NF as a self-sacrificed highly efficient electrode for affordable green H₂ production through electrochemical water splitting in alkaline electrolyte is discussed. The resultant bifunctional electrode was synthesized through a controllable two-step hydrothermal approach. The hybrid electrocatalyst exhibited outstanding electrocatalytic performance towards oxygen evolution reaction (η₁₀ ∼240 mV) and hydrogen evolution reaction (η₁₀ ∼87 mV) to achieve a current density of 10 mA cm⁻² with long-term stability. Impressively, the alkaline water electrolyzer delivered a cell voltage of 1.56 V@10 mA cm⁻² and remarkable stability due to the significant synergistic interfacial effect among the different phases, high electrical conductivity, rich exposed active sites with optimized free energy of chemisorbed reaction intermediates, high intrinsic activity, and numerous open channels for ion diffusion with mass transport at the interface. This research strategy provided insight into designing non-noble transition metal-based electrocatalysts by engineering interfacial active sites toward industrial-scale green hydrogen production.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"129 ","pages":"Pages 75-90"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863331","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":"Insight into the spontaneous combustion mechanism and characteristics of the hydrogen-blended natural gas during the leakage process: A numerical study","authors":"Wenlong Jia ,&nbsp;Qiaojing Huang ,&nbsp;Chuanxian Wen ,&nbsp;Xia Wu","doi":"10.1016/j.ijhydene.2025.04.328","DOIUrl":"10.1016/j.ijhydene.2025.04.328","url":null,"abstract":"<div><div>This paper uses Fluent software to develop a multi-field-coupled model for HBNG pipeline leakage. Flow characteristics, chemical reactions, and electrostatic interactions on the spontaneous combustion mechanism are investigated. The criterion is determined by temperature and OH⁻ mass fraction. Considering different conditions (hydrogen volume fraction 0–30 %, leakage pressure 4–10 MPa, leakage hole diameter 5–100 mm, pipe wall thickness 15–35 mm, static electricity intensity 0–0.5V), this paper studies 28 cases and explores the effects of diffusion ignition and electrostatic ignition mechanism on HBNG spontaneous combustion. Results show that: with the increasing of hydrogen volume fraction, leakage pressure, leakage hole diameter, and pipe wall thickness, the temperature, OH⁻ mass fraction and the possibility of self-ignition in the leakage process increase. The effect of electrostatic intensity on spontaneous combustion is relatively small. HBNG satisfies the spontaneous combustion criterion in the extreme spontaneous combustion condition. The maximum temperature and OH⁻ mass fraction respectively reach 1632.6 K and 6.15 × 10⁻⁴.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"130 ","pages":"Pages 64-75"},"PeriodicalIF":8.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863926","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}