{"title":"CoMo-LDHs two-dimensional nanosheets grown in BiVO4 and enhanced photoelectrochemical water oxidation","authors":"Mingyu Jing, Yuzheng Wang, Guimei Shi, Laishi Li, Yusheng Wu, Feng Liu, Anbang Guo, Hongyan Yi","doi":"10.1016/j.ijhydene.2025.03.336","DOIUrl":"10.1016/j.ijhydene.2025.03.336","url":null,"abstract":"<div><div>CoMo-LDHs grown on BiVO<sub>4</sub> (BVO) worm-like structures (BVO@CoMo-LDHs) were prepared by hydrothermal method. BVO@CoMo-LDHs can greatly increase the reaction contact area and provide more reaction active sites, thus greatly improving the hydrolysis capacity of photoelectric chemistry (PEC). The BVO@CoMo-LDHs photoanode exhibits excellent photoelectric performance under neutral electrolyte conditions. The optical current density reached 4.3 mA/cm<sup>2</sup>, which was three times that of the naked BVO (1.5 mA/cm<sup>2</sup>). CoMo-LDHs structure was found to inhibit V<sup>5+</sup> hydrolysis, thus extending lifespan. In the study of the electron transfer kinetics, the step from ∗ OOH to O<sub>2</sub> is identified as a rate-determining step, which favors the desorption of O<sub>2</sub> and accelerates the reaction. According to the work function and electron differential density calculation, a built-in electric field will be generated at the interface, determining the electron transfer direction and forming the Ⅱ-type heterojunction, thus reducing the overall carrier recombination.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 473-485"},"PeriodicalIF":8.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705564","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 hydrogen production and storage at wind farms: An economic and environmental optimisation","authors":"Mohammad Sameti , Emily Mulcair , Eoin Syron","doi":"10.1016/j.ijhydene.2025.03.279","DOIUrl":"10.1016/j.ijhydene.2025.03.279","url":null,"abstract":"<div><div>As the levels of variability on the electric grid increase, the occurrences and magnitude of curtailment increase accordingly. Powering electrolysers using curtailed wind is a potential means of employing this otherwise wasted energy, as well as displacing fossil fuels in sectors such as transport and heating. In this paper, an optimisation model, capable of determining the optimal sizing of a curtailed-wind-driven green hydrogen production to maximise profit is proposed. It considers system's technical characteristics; its location relative to the market, the regions wholesale electricity price, the target market selling price, and the windfarm's projected curtailment profile. The subsystems, including transport, storage, compression, and grid contribution as well as the electrolyser are sized to meet this optimal level. The hypothesis of whether the market into which the hydrogen is sold into plays a significant role in the sizing and profitability is addressed through 36 scenarios. A low curtailment, low distance scenario maximises the electrolysers size (60 MW) at a selling price of 6.7 €/kg or above, however, at 6.6 €/kg the electrolyser is sized at 14.86 MW. The storage decreases the profit by up to 40 % and when the transport is the dominant expense, it constitutes around 50 % of the expenditure. The variation in profitability from one curtailment profile to another is much more significant at a high electricity price compared to a low price. Furthermore, considering CO<sub>2</sub> emissions or reduction in the payback period in the analysis will result in a different system schematic.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 572-583"},"PeriodicalIF":8.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Iqra Sadiq, Syed Asim Ali, Saman Shaheen, Iqra Fatima, Tokeer Ahmad
{"title":"Unlocking potential and challenges of MOFs and COFs based energy materials for CO2 reduction and H2 production","authors":"Iqra Sadiq, Syed Asim Ali, Saman Shaheen, Iqra Fatima, Tokeer Ahmad","doi":"10.1016/j.ijhydene.2025.03.249","DOIUrl":"10.1016/j.ijhydene.2025.03.249","url":null,"abstract":"<div><div>Green H<sub>2</sub> generation and CO<sub>2</sub> capture provide the captivating aspirations for environmental remediation to acquire carbon neutral prospects. Albeit, actualization and extensibility of these technologies need effective catalytic systems to enhance the performances of H<sub>2</sub> evolution reaction (HER) and CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR). MOFs and COFs are the fascinating functional compounds possessing porous structures which reveal tunable surface property and tremendous specific surface area. This review article intimates with the remarkable characteristics of MOFs/COFs and current achievements in the field of heterogeneous catalysis that can proffer exceptional photocatalytic and electrocatalytic activity specifically towards CO<sub>2</sub>RR and HER for scalable sustainable endeavors. The prudent choices of fabrication methods to achieve cost-efficient catalytic maneuvers have been detailed in the light of recent methodological advances. In the contemplation of understanding reaction mechanism and viability of MOFs/COFs based energy operations, the recent growth in their theoretical modelling and techno-economic assessments have been extensively discussed and finally the future perspectives have been presented to highlight the scope of improvement coherently. This review will act as a felicitous medium for promoting MOF and COF based catalytic systems towards energy-conversion applications with utilizable cognizance for future energy technologies.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696110","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}
Yihong Sun , Jianfeng Wan , Wenyan Bi , Shizheng Xie , Menglin Yu , Yikai Hou , Tianen Li , Dongkui Zhou , Lebin Li , Baozhong Liu
{"title":"NiCoP-stabilized single atoms for efficient hydrogen evolution: A first-principles study","authors":"Yihong Sun , Jianfeng Wan , Wenyan Bi , Shizheng Xie , Menglin Yu , Yikai Hou , Tianen Li , Dongkui Zhou , Lebin Li , Baozhong Liu","doi":"10.1016/j.ijhydene.2025.03.323","DOIUrl":"10.1016/j.ijhydene.2025.03.323","url":null,"abstract":"<div><div>The efficient production of hydrogen through water electrolysis can be regarded as a pragmatic strategy for the generation of clean, low-carbon, safe, and highly efficient energy. However, to overcome the significant overpotential, the sluggish hydrogen evolution reaction (HER) requires a significant energy input. A good atomic-level electrocatalyst design strategy plays a crucial role in improving HER performance. In this work, density functional theory (DFT) calculations are systematically applied to investigate single metal-atom electrocatalysts stabilized on NiCoP supports (M@NiCoP). Initially, a computational evaluation of the thermodynamic and electrochemical stability of all the catalysts was conducted. Subsequently, the hydrogen adsorption Gibbs free energies of these catalysts were calculated, to screen out materials that exhibited both good performance and stability. The research result indicates that Sn@NiCoP and Pt@NiCoP exhibited excellent stability and catalytic activity, especially the ΔG<sub>H∗</sub> of Pt@NiCoP catalyst with only 0.01 eV (pH = 0), which outperforms the current Pt/C catalyst. This research offers theoretical predictions regarding the design of low-cost HER electrocatalysts. Moreover, it has pioneered new methods for stabilizing single-atom (SAC) catalysts.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696561","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}
Xuesong Wei , Yutaro Umehara , Hironori Nakajima , Kohei Ito , Atsuroh Etoh , Shoji Mori
{"title":"Effect of mesh size of Ni wire mesh electrodes on alkaline water electrolysis performance: A study based on the observation of bubble departure behavior","authors":"Xuesong Wei , Yutaro Umehara , Hironori Nakajima , Kohei Ito , Atsuroh Etoh , Shoji Mori","doi":"10.1016/j.ijhydene.2025.03.267","DOIUrl":"10.1016/j.ijhydene.2025.03.267","url":null,"abstract":"<div><div>To enhance the compactness of electrolyzers and mitigate energy losses during high operating current densities, the concept of a zero-gap electrolytic cell design has been proposed, with wire mesh commonly utilized as electrodes owing to its cost effectiveness and easy fabrication. To achieve more efficient hydrogen production, many studies have been done on developing high-performance water electrolysis catalysts based on wire mesh electrode. The structure of wire mesh electrode can influence its gas bubbles release behavior, thereby impacting its water electrolysis performance significantly. However, the relationship between the wire mesh structure, gas bubble behavior on wire mesh, and water electrolysis performance of wire mesh is still unclear. In this study, four types of Ni wire mesh electrodes with varying mesh numbers (20 mesh, 40 mesh, 100 mesh, and 200 mesh) were employed as cathodes in a zero-gap electrolytic cell to investigate the relationship between wire mesh structure, behavior of hydrogen bubble detachment from wire mesh, and hydrogen evolution reaction (HER) performance of wire mesh. At a high current density (<em>i</em><sub>ECSA</sub> = 800 mA/cm<sup>2</sup>) in 1 M KOH aqueous solution, hydrogen bubbles detach in a higher rate and smaller size from the Ni wire mesh with higher mesh number. In this case, the HER overpotential decreases in the order of 20 mesh >40 mesh >100 mesh >200 mesh, because the higher detachment rate and smaller detachment size of hydrogen bubbles can cause a greater catalytic active sites exposure of Ni wire mesh electrode and lead to a lower HER overpotential. To simulate the operating condition of industrial electrolyzers, a 4 M KOH aqueous solution was also utilized as the electrolyte to explore the aforementioned relationship. Under <em>i</em><sub>ECSA</sub> = 800 mA/cm<sup>2</sup>, the average sizes of hydrogen bubbles detachment from four types of wire mesh electrodes increased to varying degrees comparing with that observed in 1 M KOH aqueous solution. These findings indicate that operating conditions of the electrolysis system may influence the relationship between HER performance of wire mesh and wire mesh structure by altering the behavior of hydrogen bubble on wire mesh. Our study highlighted the importance of evaluating the characteristics of bubble on wire mesh during water electrolysis in order to determine the wire mesh structure with optimum performance.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liang Zeng , Liu Luo , Jian He , Ding Zhu , Shijia Mu , Wei Wang , Yigang Yan , Chaoling Wu , Yungui Chen
{"title":"Development of Ti–Mn alloys with low hysteresis and high capacity by introducing Cr","authors":"Liang Zeng , Liu Luo , Jian He , Ding Zhu , Shijia Mu , Wei Wang , Yigang Yan , Chaoling Wu , Yungui Chen","doi":"10.1016/j.ijhydene.2025.03.287","DOIUrl":"10.1016/j.ijhydene.2025.03.287","url":null,"abstract":"<div><div>Ti–Mn hydrogen storage alloys have excellent comprehensive advantages, including high reversible capacity, good cycling stability, and cost-effectiveness. However, the significant hydrogen absorption and desorption hysteresis hinders its practical applications. In this work, a systematic investigation is conducted into the effects of Cr content on the composition, structure, and hydrogen storage properties of Ti<sub>1.25</sub>Mn<sub>1.75-<em>x</em></sub>Cr<sub><em>x</em></sub> (<em>x</em> = 0, 0.05, 0.15, and 0.25) alloys, with a particular focus on the impact of Cr introduction on the hydrogen absorption and desorption hysteresis of these alloys. The experimental results indicate that the alloy exhibits the best overall hydrogen storage properties when x = 0.15, with a maximum reversible hydrogen storage capacity of 1.96 wt%. The introduction of Cr can significantly reduce hysteresis without notably altering the hydrogen absorption and desorption properties. The hysteresis factor decreases from 0.1881 (<em>x</em> = 0) to 0.0496 (<em>x</em> = 0.25). Notably, a reasonable explanation for how the introduction of Cr reduces hysteresis in Ti–Mn alloys based on the material's plastic deformation properties is given. This study provides insights for the design of Ti–Mn alloys with low hysteresis and high capacity.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 315-322"},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698048","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":"Understanding the kinetic enhancement of hydrogen sorption in MgH2 via KNbO3 through the perspective of the catalytic mechanism","authors":"Bhawna Rathi , Shivani Agarwal , Kriti Shrivastava , Hiroki Miyaoka , Takayuki Ichikawa , Manoj Kumar , Ankur Jain","doi":"10.1016/j.ijhydene.2025.03.273","DOIUrl":"10.1016/j.ijhydene.2025.03.273","url":null,"abstract":"<div><div>MgH<sub>2</sub> possesses the attributes of a superior hydrogen storage material because of its excellent efficiency, safety, large hydrogen storage capacity, and cheap cost. However, it still has certain flaws, including a high working temperature and sluggish desorption kinetics, which restrict its applicability and open possibilities to device new methodologies to circumvent these obstacles. The current work is concerned with the study of the hydrogen storage capabilities of MgH<sub>2</sub> - <em>x</em> wt% KNbO<sub>3</sub> (<em>x</em> = 5,10,15) and the underlying mechanism. Among these composites, the MgH<sub>2</sub>+ 10 wt% KNbO<sub>3</sub> sample has the finest performance, which was concluded after evaluating the desorption temperature and isothermal absorption kinetics. Compared to the as-milled and as-received MgH<sub>2</sub>, the 10 wt% doped sample began to emanate hydrogen at about 232 °C (onset temperature) with a peak temperature of 238.5 °C; a reduction of almost 96 °C and 180 °C, respectively. Furthermore with the addition of 10 wt% KNbO<sub>3</sub>, the apparent activation energy for dehydrogenation was decreased from 170 kJ/mol for as received MgH<sub>2</sub> to 70 kJ/mol for catalyzed one. The catalysis yields a 60 % decrement in the kinetic barrier, which is a rather remarkable result compared to the pristine one. Hydrogen absorption at room temperature sees a remarkable upgradation in terms of both increased rate and higher wt% stored by the catalyzed sample (4.28 wt% in 4 h) compared to milled one (0.22 wt% in 4 h). X-ray diffraction (XRD), Scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS) were performed after each step to gain an in-depth understanding of the catalytic mechanism. XPS confirmed that the higher valency Nb (+5) in KNbO<sub>3</sub> was converted to the lower valency speceies, which fastened the transformation of electrons. Additionally, the formation of oxygen vacancies was confirmed which act as active centers and promote electron mobility and hydrogen diffusivity. This event created a multielement multivalent catalytic environment, which improves the sorption kinetics of MgH<sub>2</sub>. Our research might serve as a blueprint for future high-performance, complex catalyst creation for magnesium hydride as reversible hydrogen storage.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696112","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}
Huilin Liu , Yunfeng Lei , Khai Chen Tan , Yazhou Wang , Xiaohua Ju , Hailiang Chu , Yongjin Zou , Teng He , Yong Shen Chua
{"title":"Enhanced hydrogen storage through the synergistic integration of LiAlH4 and carbazole-based liquid organic hydrogen carrier","authors":"Huilin Liu , Yunfeng Lei , Khai Chen Tan , Yazhou Wang , Xiaohua Ju , Hailiang Chu , Yongjin Zou , Teng He , Yong Shen Chua","doi":"10.1016/j.ijhydene.2025.03.318","DOIUrl":"10.1016/j.ijhydene.2025.03.318","url":null,"abstract":"<div><div>Lithium aluminum hydride (LiAlH<sub>4</sub>) and 9-ethyl carbazole (NCZ) are attractive hydrogen storage materials due to high hydrogen storage capacity. However, the practical application of LiAlH<sub>4</sub> and NCZ are hindered by limited reversibility and sluggish reaction kinetics, respectively. In this study, we report the synergistic integration of LiAlH<sub>4</sub> and 9-ethyl carbazole in a 1:1 molar ratio (LA-NCZ) which resulted in remarkable improvement in the hydrogen storage properties. NCZ significantly lowered the dehydrogenation temperature of LiAlH<sub>4</sub>, enabling rapid hydrogen release between 150 °C and 160 °C. The dehydrogenated products of LiAlH<sub>4</sub> (i. e., LiH and Al), on the other hand, enhanced the hydrogenation selectivity and kinetics of NCZ, achieving faster hydrogen uptake and higher conversion efficiency under mild conditions (90 °C, 70 bar H<sub>2</sub>). These mutual enhancements reveal the complementary advantages of the LA-NCZ composite, providing a systematic approach to improving hydrogen storage efficiency, reversibility, and selectivity.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 276-281"},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697944","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}
Nicolae Spătaru , Loredana Preda , Elena Matei , Veronica Satulu , Marius Alexandru Mihai , Mihai Marian Radu , Cristina Donath , Olivia Georgeta Moga , Tanţa Spătaru
{"title":"Beneficial role of silicotungstic acid presence on the WO3-modified boron-doped diamond substrate on the electrocatalytic activity for methanol anodic oxidation of supported platinum","authors":"Nicolae Spătaru , Loredana Preda , Elena Matei , Veronica Satulu , Marius Alexandru Mihai , Mihai Marian Radu , Cristina Donath , Olivia Georgeta Moga , Tanţa Spătaru","doi":"10.1016/j.ijhydene.2025.03.327","DOIUrl":"10.1016/j.ijhydene.2025.03.327","url":null,"abstract":"<div><div>The present paper evidences the beneficial effect that the combination of Pt with WO<sub>3</sub> and silicotungstic acid (STA) brings to the methanol oxidation electroactivity. To avoid substrate interferences boron doped diamond (BDD) was used as the electrocatalysts support. SEM measurements have shown that the use of a STA/WO<sub>3</sub>/BDD substrate allows the electrodeposition of smaller Pt clusters, exhibiting better dispersion, higher homogeneity in terms of size and enhanced electrochemically active surface area. Cyclic voltammetry, polarization and EIS experiments demonstrated than STA addition on the WO<sub>3</sub>/BDD support induces to the deposited Pt higher activity and improved resistance to fouling during methanol anodic oxidation. Based on the XPS results such behavior was tentatively ascribed to the higher surface concentration of Pt(OH)<sub>2</sub> species and adsorbed water that STA presence enables, which may assist in the oxidative desorption of reaction intermediates.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 403-411"},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705566","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":"Knowledge-driven multi-timescale optimization dispatch for hydrogen-electricity coupled microgrids","authors":"Zhicheng Wei, Bin Jia, Xing Dong, Fan Li, Bo Sun","doi":"10.1016/j.ijhydene.2025.03.274","DOIUrl":"10.1016/j.ijhydene.2025.03.274","url":null,"abstract":"<div><div>Hydrogen-electricity coupled microgrids (HEMGs), which convert surplus renewable electricity into hydrogen, promise to reduce the asynchronous spatial and temporal distribution between renewable energy outputs and the load demands. However, given the complex system structure and different characteristics of renewable and hydrogen energies, optimizing the dispatch is a difficult task. In this paper, the source-storage-load dispatch problem of HEMGs is solved with a knowledge-driven multi-timescale optimization dispatch strategy. First, the multi-timescale dispatch strategy of seasonal hydrogen storage, day-ahead economic dispatch and intraday dynamic optimization is proposed to balance the supply-and-demand fluctuations. Second, an improved knowledge-driven optimization framework is designed and a knowledge network is established by using the knowledge accumulated from historical data and expert experience to enhance the optimization quality. Third, the system operation under fluctuating inputs is optimized using a variable neighborhood search solution algorithm based on the dynamic window approach. Case studies demonstrated that the proposed optimization strategy reduces the operating cost, carbon emissions and solution time by 23.58 %, 33.95 % and 25.35 % with the proposed optimization strategy.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 333-345"},"PeriodicalIF":8.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698041","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}