International Journal of Hydrogen Energy最新文献

Effects of wire mesh on hydrogen explosion in narrow and long pipe 金属丝网对狭长管道氢气爆炸的影响

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-14 DOI: 10.1016/j.ijhydene.2026.153936

Zhenfang Geng, Jiaxing Zhang, Wei Gao, Yuke Gao, Han Lu, Bo Liang, Yanchao Li

引用次数: 0

Distinct microstructural and mechanical responses of Ti-6321 alloy to gaseous and electrochemical hydrogen charging Ti-6321合金对气体充氢和电化学充氢的微观组织和力学响应

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-14 DOI: 10.1016/j.ijhydene.2026.153979

Yali Xu , Jiamin Zhang , Shuaifeng Zhang , Lingyu Xu , Qianli Liu , Shengli Yang , Bobo Li , Peng Jiang , Jinshan Li , Minjie Lai

{"title":"Distinct microstructural and mechanical responses of Ti-6321 alloy to gaseous and electrochemical hydrogen charging","authors":"Yali Xu , Jiamin Zhang , Shuaifeng Zhang , Lingyu Xu , Qianli Liu , Shengli Yang , Bobo Li , Peng Jiang , Jinshan Li , Minjie Lai","doi":"10.1016/j.ijhydene.2026.153979","DOIUrl":"10.1016/j.ijhydene.2026.153979","url":null,"abstract":"<div><div>In this study, two hydrogen charging methods, gaseous charging and electrochemical charging, were used to investigate the hydrogen embrittlement behavior of Ti-6321 alloy. The microstructures, hydrogen concentration distributions, and mechanical properties of specimens subjected to each method were systematically examined. The results show that δ-hydrides readily form following electrochemical charging, whereas no hydride formation is observed after gaseous charging despite comparable hydrogen contents. Gaseously charged specimens exhibit a uniform hydrogen distribution from surface to center, while electrochemically charged specimens display a gradient hydrogen concentration distribution. Hydrogen charging increases the hardness of the α phase due to the solid solution strengthening effect, with gaseously charged specimens exhibiting higher α-phase hardness owing to higher hydrogen content in solid solution in the α phase. In contrast, hydrogen ingress leads to softening of the β phase, because of reduced cohesion strength at α/β interfaces and the embrittlement of the β phase. This softening phenomenon is more pronounced in electrochemically charged specimens. Owing to increased generation of dislocations, dislocation networks, and subgrain boundaries during charging, the electrochemically charged specimens show higher mechanical strength compared to the gaseously charged specimens. However, their ductility is lower, which is attributed to reduced dislocation slip activity and increased occurrence of secondary cracks at α/β interfaces, primarily arising from the hydrogen-enhanced interfacial decohesion mechanism. These findings provide new insights into the distinct effects of hydrogen charging routes on the microstructural evolution and hydrogen embrittlement behavior in titanium alloys.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 153979"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186964","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}

引用次数: 0

Critical review of biohydrogen production from Agave angustifolia Haw residues: Technological barriers, techno-economic gaps, and scale-up strategies 龙舌兰残渣制氢技术综述：技术壁垒、技术经济差距和扩大规模策略

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-14 DOI: 10.1016/j.ijhydene.2026.154026

Jesica Ariadna Jiménez-Mendoza , Magdaleno Caballero-Caballero , Fernando Chiñas-Castillo , Rafael Alavez-Ramirez , Luis Humberto Robledo-Taboada , José Luis Montes Bernabé

{"title":"Critical review of biohydrogen production from Agave angustifolia Haw residues: Technological barriers, techno-economic gaps, and scale-up strategies","authors":"Jesica Ariadna Jiménez-Mendoza , Magdaleno Caballero-Caballero , Fernando Chiñas-Castillo , Rafael Alavez-Ramirez , Luis Humberto Robledo-Taboada , José Luis Montes Bernabé","doi":"10.1016/j.ijhydene.2026.154026","DOIUrl":"10.1016/j.ijhydene.2026.154026","url":null,"abstract":"<div><div>The harmful global impacts of greenhouse gases from high CO<sub>2</sub> emissions make a shift to clean energy like hydrogen essential. Hydrogen can be produced biologically from biomass. This article reviews dark fermentation of <em>Agave angustifolia</em> Haw., which yields bagasse. Studies show related species such as <em>A. karwinskii</em>, A. lechuguilla, and <em>A. tequilana</em> Weber can produce up to 3.48 mol of H<sub>2</sub> per mol of glucose. This study identifies the specific technological barriers, bioengineering challenges, and economic gaps associated with <em>A. angustifolia</em> Haw as a potential source for hydrogen production, and proposes two combined treatments: acid hydrolysis and steam hydrolysis, followed by enzymatic treatment, contributing to the utilization and reuse of this polluting residue for energy generation in the state of Oaxaca, a major mezcal producer in Mexico. This review also provides a practical roadmap to accelerate laboratory-to-pilot transition of agave-based biohydrogen systems.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 154026"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187758","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}

引用次数: 0

Partial phosphation of amorphous NiFe layered double hydroxides into an efficient catalyst for seawater splitting 非晶态NiFe层状双氢氧化物部分磷化成海水裂解的高效催化剂

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.153972

Tao Yang , Lingyu Cui , Yi Shen

{"title":"Partial phosphation of amorphous NiFe layered double hydroxides into an efficient catalyst for seawater splitting","authors":"Tao Yang , Lingyu Cui , Yi Shen","doi":"10.1016/j.ijhydene.2026.153972","DOIUrl":"10.1016/j.ijhydene.2026.153972","url":null,"abstract":"<div><div>To address the corrosion issue in seawater environments, the rational design of active electrocatalysts that can effectively resist chloride ion corrosion is desirable for hydrogen production via seawater electrolysis. Herein, we fabricated a series of catalysts by phosphating nickel-iron double layered hydroxides (NiFe LDHs). The effects of Ni/Fe ratios and amorphous properties of the NiFe LDHs on the catalytic performance were extensively studied. The optimal sample derived from an amorphous NiFe LDH with a Ni/Fe ratio of 1:2 was composed of phosphides, metallic nickel nanoparticles and nickel-iron oxide nanosheets, leading to abundant strongly interacted interfaces. Such structural features endowed the catalyst with excellent catalytic activities for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under alkaline freshwater and natural seawater conditions. To reach a current density of 100 mA cm<sup>−2</sup>, overpotentials of only 353 and 397 mV were required for the OER and HER in natural seawater, respectively. The catalysts were highly stable under alkaline freshwater and natural seawater conditions with excellent long-term stability. In addition, an anion exchange membrane electrolyzer assembled by Pt/C || A-Ni<sub>2</sub>Fe–P yielded a current of 2 A cm<sup>−2</sup> at a voltage of 2.23 V. This remarkable catalytic activity is attributed to the multiple interfaces exposing more active sites and the formation of phosphides and metallic nickel nanoparticles, which could optimize the adsorption energy of the intermediates. The outstanding stability of the catalysts was derived from the effective repulsion of Cl<sup>−</sup> by the phosphate passivation layer formed during the reconfiguration of the metal phosphides. This work provides a new idea for the synthesis of high-performance bifunctional electrocatalysts for seawater electrolysis.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 153972"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187700","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}

引用次数: 0

Experimental determination and prediction methods of flammability limits of hydrogen 氢可燃性极限的实验测定与预测方法

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.153877

Haoran Zhao , Shikai Bao , Xuhao Yuan , Xiao Cai , Gang Li

{"title":"Experimental determination and prediction methods of flammability limits of hydrogen","authors":"Haoran Zhao , Shikai Bao , Xuhao Yuan , Xiao Cai , Gang Li","doi":"10.1016/j.ijhydene.2026.153877","DOIUrl":"10.1016/j.ijhydene.2026.153877","url":null,"abstract":"<div><div>In the present study, the flammability limits of hydrogen are measured using a low temperature combustion chamber. The effects of initial temperature, pressure, and dilution on the flammability limits of hydrogen are investigated, and two classic prediction methods of flammability limits are evaluated. The results indicate that the flammability range of hydrogen is widened with the increase of temperature and pressure, mainly due to the larger chain-branching reaction rates and higher chance of molecule collisions. The flammability range of hydrogen is narrowed with the increase of dilution ratio, and the inert capability of CO<sub>2</sub> is stronger than that of N<sub>2</sub>. The adiabatic flame temperature (AFT) method can give a satisfactory prediction for the flammability limits of hydrogen, despite this method is heavily dependent on the accuracy of the critical adiabatic flame temperature. The limiting burning velocity (LBV) method overpredicts the flammability limits of hydrogen, and it is limited by the experimental data of laminar burning velocity. Both the critical adiabatic flame temperature and limiting burning velocity of hydrogen are not constant and significantly vary under different conditions. Finally, to use the two methods more accurately, the critical adiabatic flame temperature and limiting burning velocity of hydrogen are correlated in a wide range of conditions. The present study emphasizes the non-constant variation of critical adiabatic flame temperature and limiting burning velocity, which can improve the prediction accuracy of hydrogen flammability limits.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 153877"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187696","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}

引用次数: 0

Are the ohmic and polarization resistances of solid oxide electrochemical cells independent from each other? 固体氧化物电化学电池的欧姆电阻和极化电阻是否相互独立？

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-14 DOI: 10.1016/j.ijhydene.2026.154040

Maria A. Gordeeva , Eugenia N. Homutinnikova , Gennady K. Vdovin , Dmitry A. Medvedev

{"title":"Are the ohmic and polarization resistances of solid oxide electrochemical cells independent from each other?","authors":"Maria A. Gordeeva , Eugenia N. Homutinnikova , Gennady K. Vdovin , Dmitry A. Medvedev","doi":"10.1016/j.ijhydene.2026.154040","DOIUrl":"10.1016/j.ijhydene.2026.154040","url":null,"abstract":"<div><div>Solid oxide electrochemical cells (SOCs) operating at low and intermediate temperatures represent a promising technology for efficient and environmentally friendly energy conversion. The performance of these cells is predominantly governed by their total area specific resistance, which comprises two principal components: the ohmic resistance (associated with ionic transport within the electrolyte) and the polarization resistance (originating from electrode reaction kinetics). Consequently, the rational design of high-performance SOCs necessitates the independent optimization of these resistive contributions. It is generally accepted that ohmic and polarization resistances are intrinsic properties of the electrolyte and electrodes, respectively, and can thus be controlled separately through material doping or microstructural engineering of the corresponding components. However, the electrolyte and electrode materials form a common area (interface), indicating their close relation to each other. In the present study, a simple experiment was conducted to confirm the relationship between ohmic and polarization resistances. In detail, several symmetrical cells were prepared using the same electrode material and various electrolytes. It was shown that the polarization resistance of the electrode was as low as higher ionic conductivity of the electrolytes under identical experimental conditions. The obtained results are further discussed within the broader context of literature data for protonic ceramic fuel and electrolysis cells, revealing a commonality: the performance of the electrode is not an isolated property but is intrinsically linked to the characteristics of the electrolyte with which it interfaces.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 154040"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186965","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}

引用次数: 0

Crystalline facet-driven NiS2/CdS composites for enhanced piezoelectric photocatalytic hydrogen evolution and mechanism 晶面驱动NiS2/CdS复合材料增强压电光催化析氢及其机理

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-14 DOI: 10.1016/j.ijhydene.2026.154006

Yang Guo , Shuqin Yuan , Xinnian Xia , Shuaijun Pan , Zhenfei Yang

{"title":"Crystalline facet-driven NiS2/CdS composites for enhanced piezoelectric photocatalytic hydrogen evolution and mechanism","authors":"Yang Guo , Shuqin Yuan , Xinnian Xia , Shuaijun Pan , Zhenfei Yang","doi":"10.1016/j.ijhydene.2026.154006","DOIUrl":"10.1016/j.ijhydene.2026.154006","url":null,"abstract":"<div><div>Crystal plane engineering and the piezoelectric effect show promise for enhancing hydrogen evolution reaction performance, yet potential synergistic effects between them remain unclear. In this study, NiS<sub>2</sub>/CdS composites dominated by CdS (002) crystalline facet were successfully synthesized and used for piezoelectric photocatalytic hydrogen evolution. Under piezoelectric conditions, CdS72 with a high (002) facet ratio demonstrated a 4.56 times improvement in hydrogen evolution performance compared to pure light irradiation, while CdS24 with a lower (002) facet ratio showed a 2.8 times enhancement. Notably, the optimized sample NiS<sub>2</sub>-5/CdS72 reached a piezoelectric photocatalytic hydrogen evolution rate of 15.67 mmol g<sup>−1</sup> h<sup>−1</sup>, which is 4.54 times higher than that of NiS<sub>2</sub>-5/CdS24 with pure irradiation. Through piezoelectric force microscopy (PFM) and finite element simulations, we revealed that the (002) enriched CdS72 generates stronger piezoelectric fields, which synergistically accelerate photogenerated charge separation as evidenced by enhanced piezoelectric photocurrent responses. The combination of the piezoelectric effect and crystalline face engineering enables structural design and broad application of highly active photocatalysts.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 154006"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187761","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}

引用次数: 0

Geospatial identification of thermal energy clusters for the development of local solar hydrogen networks in the manufacturing industry: A case study in southeastern Spain. Toward EU-ready local hydrogen networks 热能集群的地理空间识别，以促进制造业中当地太阳能氢网络的发展：以西班牙东南部为例。面向欧盟的本地氢网络

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.154012

J.A. Romero-Ramos , Ignacio Arias , Josué F. Rosales-Pérez , Rodrigo Escobar , José Cardemil , M. Pérez-García

{"title":"Geospatial identification of thermal energy clusters for the development of local solar hydrogen networks in the manufacturing industry: A case study in southeastern Spain. Toward EU-ready local hydrogen networks","authors":"J.A. Romero-Ramos , Ignacio Arias , Josué F. Rosales-Pérez , Rodrigo Escobar , José Cardemil , M. Pérez-García","doi":"10.1016/j.ijhydene.2026.154012","DOIUrl":"10.1016/j.ijhydene.2026.154012","url":null,"abstract":"<div><div>This study presents a geospatial methodology to screen local green hydrogen networks that connect photovoltaic-electrolyzer production sites with nearby manufacturing industries that consume natural gas for thermal processes. The framework integrates industrial thermal demand estimation, usable industrial land for photovoltaic deployment, annual modeling of hydrogen production and planning-level network routing restricted to the road network. In southeastern Spain, the workflow identifies 8811 candidate sites yield 521 GWh/y of potential hydrogen (28.5% of regional industrial gas demand). Connectivity is assessed at 75-300 m service radii and network performance is quantified using route intensity (pipeline km/GWh potentially delivered). The 150 m scenario offers the best reach-efficiency trade-off, making 51.6% of facilities reachable and capturing 158 GWh/y of clustered hydrogen potential, with a median route intensity of 11 km/GWh. The proposed GIS-based workflow provides a replicable screening-level tool for the early planning of short-range hydrogen distribution networks, supporting future techno-economic and regulatory assessments.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 154012"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187658","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}

引用次数: 0

Construction of sub-methanol-molecule-scale proton channels in SPBI/POSS-SO3H composite membranes for high-performance direct methanol fuel cells 高性能直接甲醇燃料电池用SPBI/POSS-SO3H复合膜亚甲醇-分子级质子通道的构建

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-14 DOI: 10.1016/j.ijhydene.2026.154041

Guoliang Liu , Meiling Fan , Zaijun Gan , Yixin Luo , Haiyang Yang , Yong Liu , Jie Wang , Hai Liu , Haining Zhang , Ying Ou

{"title":"Construction of sub-methanol-molecule-scale proton channels in SPBI/POSS-SO3H composite membranes for high-performance direct methanol fuel cells","authors":"Guoliang Liu , Meiling Fan , Zaijun Gan , Yixin Luo , Haiyang Yang , Yong Liu , Jie Wang , Hai Liu , Haining Zhang , Ying Ou","doi":"10.1016/j.ijhydene.2026.154041","DOIUrl":"10.1016/j.ijhydene.2026.154041","url":null,"abstract":"<div><div>Construction of hydrophilic channel microstructure represents a critical challenge in proton exchange membranes (PEMs) that simultaneously achieve high proton conductivity and low methanol permeability for direct methanol fuel cells (DMFCs). Herein, a novel <em>in-situ</em> ionic crosslinked composite membrane was fabricated by incorporating sulfonated polyhedral oligomeric silsesquioxane (POSS–SO<sub>3</sub>H) into sulfonated polybenzimidazole (SPBI) matrix. The unique multi-sulfonic acid architecture of POSS-SO<sub>3</sub>H significantly enhance membrane hydrophilicity, creating continuous proton transport channels with optimized hydration networks. Meanwhile, the ionic crosslinking formed between POSS-SO<sub>3</sub>H and SPBI, along with the steric hindrance imparted by POSS-SO<sub>3</sub>H nanoparticles, effectively controlled both the free volume radius and fractional free volume in the membrane matrix, thereby suppressing methanol permeation. Remarkably, the SPBI/POSS-SO<sub>3</sub>H membrane with thickness of 15 μm exhibited a high open-circuit voltage of 0.72 V, remarkable peak power density of 130.20 mW cm<sup>−2</sup> and low crossover current density of merely 120 mA cm<sup>−2</sup> at 80<sup>o</sup>C with 2 M methanol.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 154041"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187757","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}

引用次数: 0

Bayesian optimisation for enhanced hydrogen production and thermal energy systems: Advancing efficiency and sustainability 增强氢气生产和热能系统的贝叶斯优化：提高效率和可持续性

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-17 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.154002

Wendell de Queiróz Lamas , Francisco José Grandinetti

{"title":"Bayesian optimisation for enhanced hydrogen production and thermal energy systems: Advancing efficiency and sustainability","authors":"Wendell de Queiróz Lamas , Francisco José Grandinetti","doi":"10.1016/j.ijhydene.2026.154002","DOIUrl":"10.1016/j.ijhydene.2026.154002","url":null,"abstract":"<div><div>This study presents a novel Bayesian optimisation framework, integrating Gaussian process surrogate models with neural feature extraction, to enhance the efficiency of hydrogen production and associated thermal energy systems. The primary aim was to address the high-dimensional, computationally expensive optimisation challenges inherent in these processes, thereby bridging a key scalability gap in previous applications. The methodological novelty lies in this hybrid model, which achieved a 40% faster convergence than conventional Bayesian optimisation, demonstrating superior sample efficiency. For hydrogen production via ethanol hydrolysis, the framework identified optimal conditions that increased hydrogen yield by 15% and improved energy efficiency by 12%. For ethanol electrolysis, it achieved a 20% reduction in energy consumption. In parallel thermal energy system optimisation, the framework enhanced the thermal conductivity of energy storage materials by 25% and reduced prediction errors in short-term heat load forecasting by 15%. These quantitative gains, validated against experimental data with a normalised mean absolute error below 7%, reveal a critical correlation: optimising thermal system efficiency directly reduces the energy required for hydrogen production. The principal conclusion is that this scalable, data-efficient framework provides a robust tool for integrated system design, with direct implications for industrial scalability and energy policy. It enables significant techno-economic improvements, supporting the economic viability of hydrogen as an energy carrier and facilitating a holistic, multi-objective approach to low-carbon energy system transition.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"218 ","pages":"Article 154002"},"PeriodicalIF":8.3,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187657","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}

引用次数: 0