International Journal of Hydrogen Energy最新文献_第6页

Under pressure: Hydrogen crossover in anion exchange membrane water electrolysis – experimental and modeling study 压力下：阴离子交换膜电解中的氢交叉实验与模型研究

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-12 DOI: 10.1016/j.ijhydene.2026.153682

Matthias Ranz , Elisabeth Verwüster , Benedikt Karan , Florian de Pauli , Bianca Grabner , Bernhard Schweighofer , Hannes Wegleiter , Alexander Trattner

{"title":"Under pressure: Hydrogen crossover in anion exchange membrane water electrolysis – experimental and modeling study","authors":"Matthias Ranz , Elisabeth Verwüster , Benedikt Karan , Florian de Pauli , Bianca Grabner , Bernhard Schweighofer , Hannes Wegleiter , Alexander Trattner","doi":"10.1016/j.ijhydene.2026.153682","DOIUrl":"10.1016/j.ijhydene.2026.153682","url":null,"abstract":"<div><div>Anion exchange membrane water electrolysis (AEMWE) offers a promising route for efficient hydrogen production, yet data on hydrogen crossover under elevated differential pressures remain scarce. This study investigates hydrogen crossover through seven state-of-the-art AEMs under non-operando conditions, replicating realistic temperature, pressure, mass flow, and contact pressure. A dedicated setup enables quantification of hydrogen transport through fully hydrated membranes without applying current or potential, thereby isolating diffusion and convection from electro-osmotic drag, supersaturation, and recombination effects. Measurements between 10 and 70 bar are complemented by a physical model describing diffusion and convective transport in the water-filled channels and within the polymer matrix. Results show a significant polymer-phase contribution to overall crossover and a clear trade-off between hydrogen permeability and area-specific resistance of the membrane. The presented data and model represent a lower limit for hydrogen crossover in current AEMs, providing essential guidance for membrane design and safe operation of pressurized AEM electrolyzers.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153682"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186981","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

Collaborative multi-component optimization strategy guided NiFeCoMnCu bifunctional electrocatalyst for overall water splitting 协同多组分优化策略指导NiFeCoMnCu双功能电催化剂整体水分解

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-12 DOI: 10.1016/j.ijhydene.2026.153932

Ru Wang , Hanlin Chen , Quan Zong , Lijing Yan , Tingli Ma , Qiaoling Kang

{"title":"Collaborative multi-component optimization strategy guided NiFeCoMnCu bifunctional electrocatalyst for overall water splitting","authors":"Ru Wang , Hanlin Chen , Quan Zong , Lijing Yan , Tingli Ma , Qiaoling Kang","doi":"10.1016/j.ijhydene.2026.153932","DOIUrl":"10.1016/j.ijhydene.2026.153932","url":null,"abstract":"<div><div>The development of efficient and low-cost electrocatalysts for water-splitting is vital for advancing hydrogen-based renewable energy solutions. Herein, the synthesis of a non-noble metal NiFeCoMnCu high-entropy alloy (HEA) is reported using a straightforward citric acid-assisted chelation route, resulting in a material with a single-phase fcc structure. Owing to the high-entropy effect, the NiFeCoMnCu HEA demonstrates exceptional bifunctional electrocatalytic performance, achieving low overpotentials of 240 mV for the oxygen evolution reaction (OER) and 165 mV for the hydrogen evolution reaction (HER) at 10 mA cm<sup>−2</sup> in 1.0 M KOH. A systematic comparison with catalysts of increasing metallic components reveals that the performance enhancement stems from synergistic electronic interactions among the constituent metals. In addition, the NiFeCoMnCu HEA drives overall water splitting at a cell voltage of 1.53 V for 10 mA cm<sup>−2</sup>, superior to the noble-metal benchmark system Pt/C || RuO<sub>2</sub> (1.62 V). Moreover, the NiFeCoMnCu HEA electrocatalyst maintains excellent activity and stability in seawater splitting, sustaining 10 mA cm<sup>−2</sup> at 1.8 V for 10 h. This work establishes a green and scalable route for designing HEA electrocatalysts toward sustainable energy conversion.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153932"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186995","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

Boosting photocatalytic hydrogen production: Strong built-in electric field in biomass-derived Mo2C–ZnCdS ohmic junction synergistically promotes charge separation 促进光催化制氢：生物质来源的Mo2C-ZnCdS欧姆结中强大的内置电场协同促进电荷分离

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-11 DOI: 10.1016/j.ijhydene.2026.153973

Ziyu Li, Mei Li, Xianglong Lyu, Meijuan Ding, Jingyi Nie, Chaoqi Ding, Aohui Ping, Zhiliang Jin

{"title":"Boosting photocatalytic hydrogen production: Strong built-in electric field in biomass-derived Mo2C–ZnCdS ohmic junction synergistically promotes charge separation","authors":"Ziyu Li, Mei Li, Xianglong Lyu, Meijuan Ding, Jingyi Nie, Chaoqi Ding, Aohui Ping, Zhiliang Jin","doi":"10.1016/j.ijhydene.2026.153973","DOIUrl":"10.1016/j.ijhydene.2026.153973","url":null,"abstract":"<div><div>The performance of photocatalytic hydrogen production is largely constrained by the charge transfer efficiency on the surface of the catalyst. The main challenge faced by ZnCdS (ZCS) in practical applications is the low efficiency of light-generated charge separation and slow migration. This study utilized sunflower stalk as a carbon source and ammonium molybdate tetrahydrate as a molybdenum source to synthesize Mo<sub>2</sub>C without the need for reducing gases in a one-step process. Mo<sub>2</sub>C and ZCS were integrated using a solvent evaporation technique to synthesize an ohmic junction catalyst (MCZ6), which was applied in photocatalytic hydrogen evolution. The results indicated that within 5 h, the hydrogen evolution of the MCZ6 complex was 120.3 mmol g<sup>−1</sup>, which was 5.98 times higher than that of the original ZCS (20.3 mmol g<sup>−1</sup>). It is worth noting that when evaluated in coal chemical wastewater, the hydrogen production capacity of the catalyst remained at 15 μmol, which pave the way for its future use in practical settings. Through photoelectrochemical experiments and Kelvin probe force microscopy analysis, the surface charge transfer efficiency of ZCS increased from 3.12% to 11.89%, and the built-in electric field strength of MCZ6 reached 50.3 mV. Combined with density functional theory, the charge distribution in MCZ6 further confirms the efficient charge transfer mechanism in the ohmic junction. This study provides novel insights and theoretical foundations for the green synthesis of Mo<sub>2</sub>C and the enhancement of photocatalytic hydrogen production performance through the regulation of surface charge transfer efficiency.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153973"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187053","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

Binder-free stabilization of transient Co(OH)2 active phases on conductive nanoparticles for durable and kinetically accelerated electrocatalytic oxygen evolution 导电纳米颗粒上瞬态Co(OH)2活性相的无粘结剂稳定和动态加速电催化析氧

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.153933

Brindha Devi Sankar, Yong-Cing Chen, Jin-Rui Lin, Yi Hsueh Chen, Jrjeng Ruan

{"title":"Binder-free stabilization of transient Co(OH)2 active phases on conductive nanoparticles for durable and kinetically accelerated electrocatalytic oxygen evolution","authors":"Brindha Devi Sankar, Yong-Cing Chen, Jin-Rui Lin, Yi Hsueh Chen, Jrjeng Ruan","doi":"10.1016/j.ijhydene.2026.153933","DOIUrl":"10.1016/j.ijhydene.2026.153933","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) are promising electrocatalysts for the oxygen evolution reaction (OER), yet their intrinsic catalytic performance is severely limited by poor charge transport, structural instability, and inherent hydrophobicity, which impedes catalyst-electrolyte interactions. Herein, the crystallization of cobalt-based MOF (Co-MOF) directly on stacking networks of Co<sup>2+</sup>-coordinated indium tin oxide (ITO) nanoparticles has been engineered, forming robust, binder-free hybrid electrodes. Via designed potential cycling, the board-like Co-MOF crystals reconstruct into hydrophilic petal-like Co(OH)<sub>2</sub> intermediate phases still bonded on nanoparticles. With rich active Co<sup>3+</sup>/Co<sup>4+</sup> redox centers and thus significantly enhanced interfacial charge transport, the overpotential reduces from 404 to 344 mV, while the Tafel slope decreases from 116 to 106 mV dec<sup>−1</sup>. Moreover, the post-crystallization substitutional doping induces partial nanoparticle coalescence, therefore improving the conductivity of nanoparticle networks and resulting in a Tafel slope of 80 mV dec<sup>−1</sup> with overpotential around 314 mV. The optimized Co-MOF/doped-ITO nanoparticle hybrid electrode maintains 95% of its activity after 72 h of continuous operation, confirming excellent durability. This work unveils a mechanistic evolution of active intermediate phases of MOF catalysts, which are extraordinarily stabilized via the covalent bonding with conductive nanoparticle networks, offering a new viable route toward stable high-performance OER catalysis.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153933"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187208","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

Energy resilience and decarbonization via hybrid renewable energy systems: A techno-economic study 能源弹性和通过混合可再生能源系统脱碳：技术经济研究

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.153765

Waqar Ali Khan , Ashkan Pakseresht , Caslon Chua , Ali Yavari

{"title":"Energy resilience and decarbonization via hybrid renewable energy systems: A techno-economic study","authors":"Waqar Ali Khan , Ashkan Pakseresht , Caslon Chua , Ali Yavari","doi":"10.1016/j.ijhydene.2026.153765","DOIUrl":"10.1016/j.ijhydene.2026.153765","url":null,"abstract":"<div><div>Global energy systems remain dominated by fossil fuels, accounting for over 80% of primary supply and driving severe climate impacts through greenhouse gas emissions. The transition to renewable sources such as solar and wind is hindered by their intermittency — daily generation can fluctuate by more than 70%, with strong seasonal variability — leading to continued reliance on fossil-based backup generation. Achieving near-complete energy autonomy while maintaining economic viability therefore remains a major challenge. This study evaluates the techno-economic feasibility of hybrid solar–wind–battery–hydrogen systems across nine configurations using a Rule-Based Heuristic Dispatch Algorithm (RB-HDA). System performance was assessed through four key metrics: demand met, fossil-fuel reliance, and economic feasibility via Levelized Cost of Energy (LCOE) and Levelized Cost of Hydrogen (LCOH). Hybrid solar–wind–battery systems met 99.89% of demand with an LCOE of 0.39–2.32 AUD/kWh, but remained limited by seasonal deficits. Integrating hydrogen storage improved resilience to 99.999% demand met with only one fossil-fuel backup hour annually, achieving an LCOH of 0.04 AUD/kg while maintaining an LCOE of 2.32 AUD/kWh. The results demonstrate hydrogen’s role as a pivotal enabler of long-term energy autonomy and a scalable, high-reliability alternative to fossil-based generation.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153765"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187207","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

Synergistic catalysis of biomass-derived porous carbon decorated with cobalt fluoride on the hydrogen storage properties of MgH2–NaBH4 composite 氟化钴修饰生物质源多孔碳对MgH2-NaBH4复合材料储氢性能的协同催化作用

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-11 DOI: 10.1016/j.ijhydene.2026.153945

Yuanhang Wang , Meijia Liu , Tengyu Zhang , Fangong Kong , Jiaguang Zheng

{"title":"Synergistic catalysis of biomass-derived porous carbon decorated with cobalt fluoride on the hydrogen storage properties of MgH2–NaBH4 composite","authors":"Yuanhang Wang , Meijia Liu , Tengyu Zhang , Fangong Kong , Jiaguang Zheng","doi":"10.1016/j.ijhydene.2026.153945","DOIUrl":"10.1016/j.ijhydene.2026.153945","url":null,"abstract":"<div><div>Owing to the high hydrogen storage capacity (7.6 wt%), abundant resources, and environmental friendliness, magnesium hydride (MgH<sub>2</sub>) has become one of the most widely studied solid-state hydrogen storage materials. In this study, we prepare a composite of MgH<sub>2</sub>–NaBH<sub>4</sub>, and then catalytically modify this MgH<sub>2</sub>–NaBH<sub>4</sub> composite by using cobalt fluoride supported on biomass-derived porous carbon (CoF<sub>2</sub>@PC). The doped composite exhibits excellent hydrogen storage capacity. It desorbs 5.04 wt% H<sub>2</sub> within 10 min at 300 °C and 5.06 wt% H<sub>2</sub> within 2 min at 350 °C. The improvement in hydrogen absorption kinetics is reflected in the rapid absorption of 5.27 wt% H<sub>2</sub> within 1 min at 200 °C. With a notable reduction to 92.82 kJ/mol, the dehydrogenation activation energy (Ea) is 20.6% lower than that of the pure MgH<sub>2</sub>–NaBH<sub>4</sub> composite. Mechanistic analysis indicates that Mg<sub>2</sub>Co/Mg<sub>2</sub>CoH<sub>5</sub> are in situ formed during the hydrogen absorption and desorption processes, acting as a “hydrogen pump” to lower the energy barrier for hydrogen atom transportation, thus accelerating both re/dehydrogenation. Furthermore, the in situ-generated MgF<sub>2</sub> and NaF can serve as electron-transfer media, accelerating hydrogen diffusion. After hydrogen desorption, the generated MgB<sub>2</sub> exists as a stable compound, which catalyzes subsequent Mg/MgH<sub>2</sub> hydrogenation and dehydrogenation. Additionally, the porous carbon support promotes the high dispersion of the catalyst, thereby contributing to improved performance. This study provides new insights into improving magnesium-based composite hydrogen storage materials through the synergistic catalysis of biomass-based carbon materials and transition metal fluorides.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153945"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146147520","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

Intensification of natural gas reforming: Feasibility assessment of a novel technology for blue hydrogen production 强化天然气重整：蓝色制氢新技术的可行性评估

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.153965

Theodoros Papalas , Athanasios Arampatzis , Andy N. Antzaras , Angeliki A. Lemonidou

{"title":"Intensification of natural gas reforming: Feasibility assessment of a novel technology for blue hydrogen production","authors":"Theodoros Papalas , Athanasios Arampatzis , Andy N. Antzaras , Angeliki A. Lemonidou","doi":"10.1016/j.ijhydene.2026.153965","DOIUrl":"10.1016/j.ijhydene.2026.153965","url":null,"abstract":"<div><div>Hydrogen stands at the forefront of the energy transition, yet its conventional carbon- and energy-intensive natural gas reforming production highlights the need for more sustainable solutions. This study presents a novel intensified concept that integrates steam methane reforming with calcium looping for <em>in situ</em> CO<sub>2</sub> capture and high-purity hydrogen production at a low reforming temperature (600 °C), along with chemical looping of nickel oxide to provide internal heat during regeneration of the CO<sub>2</sub> capture material. Setting the levelized cost of hydrogen production over a 20-year lifetime as a comparative key metric, reveals that the intensified process outperforms conventional natural gas reforming, costing $3.61 per kg versus $3.77 per kg. Additionally, the intensified process attains ∼85% reduction in carbon emissions by eliminating fossil fuel combustion to drive reforming <em>via</em> the exothermic carbonation reaction and separating the by-product CO<sub>2</sub> into a high-purity stream. Consequently, a generalized carbon tax of 120$ per tonne of emitted CO<sub>2</sub> could raise costs more than 35% for conventional reforming, while its impact on the intensified process is significantly lower. Overall, the demonstrated feasibility of the novel reforming technology establishes a scalable, cost-competitive, and low-carbon pathway for hydrogen production, while emphasizing the transformative potential of process intensification strategies.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153965"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186894","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

Beyond quantitative risk assessment: A spatial machine learning framework for risk-informed hydrogen appliance deployment 超越定量风险评估：用于风险知情氢设备部署的空间机器学习框架

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.153950

Kanishkar Venkatesan, Anirudha Joshi, Fereshteh Sattari, Lianne Lefsrud, Mohd Adnan Khan

{"title":"Beyond quantitative risk assessment: A spatial machine learning framework for risk-informed hydrogen appliance deployment","authors":"Kanishkar Venkatesan, Anirudha Joshi, Fereshteh Sattari, Lianne Lefsrud, Mohd Adnan Khan","doi":"10.1016/j.ijhydene.2026.153950","DOIUrl":"10.1016/j.ijhydene.2026.153950","url":null,"abstract":"<div><div>Hydrogen is emerging as a practical low-carbon fuel for residential heating, offering decarbonization benefits but raising safety concerns due to its high diffusivity and wide flammability range. This study develops a data-driven framework that classifies societal risk for hydrogen appliance deployment across Canadian residential areas. A Light Gradient Boosting Machine model is trained on 30,000 verified fire incidents in Alberta, enriched with demographic, infrastructural, and geospatial features. The framework achieves strong predictive performance, with an accuracy of 0.80 and a Receiver Operating Characteristics–Area Under Curve (ROC-AUC) of 0.91. Key predictors such as occupancy, asset value, and building height explain regional variations in hydrogen-related risk. The resulting spatial risk maps identify communities requiring retrofits or additional safeguards and provide regulators/planners with hydrogen-specific zoning tools to support safe and sustainable energy transition planning. While demonstrated in Alberta, the framework is adaptable to other provinces and international contexts.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153950"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186895","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

Synergistic effect of bimetallic Ni–Ru and oxygen-vacancy-rich Gd-doped CeO2 for enhanced hydrogen production and coke-resistant stability in ethanol partial oxidation 双金属Ni-Ru和富氧空位的gd掺杂CeO2在乙醇部分氧化中增强产氢和抗焦稳定性的协同效应

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.153949

Gene Yang, Jiangtian Li, Deryn Chu

{"title":"Synergistic effect of bimetallic Ni–Ru and oxygen-vacancy-rich Gd-doped CeO2 for enhanced hydrogen production and coke-resistant stability in ethanol partial oxidation","authors":"Gene Yang, Jiangtian Li, Deryn Chu","doi":"10.1016/j.ijhydene.2026.153949","DOIUrl":"10.1016/j.ijhydene.2026.153949","url":null,"abstract":"<div><div>Hydrogen production via catalytic partial oxidation (CPOX) of ethanol is a promising approach for compact and efficient reforming systems. Nickel (Ni)-based catalysts are widely used due to their cost-effectiveness and high activity; however, their durability is limited by coke formation and deactivation. This study investigates the role of oxygen-vacancy-rich Gd-doped ceria (GDC) support and its synergistic interaction with ruthenium (Ru) in Ni-based catalysts. The optimized Ni/Ru(9:1)-GDC (NRG) catalyst showed high hydrogen yield, suppressed methane and light hydrocarbon formation, and stable long-term operation, attributed to the three-way synergy among Ni, Ru, and GDC. In this system, Ni provided active sites for ethanol reforming, Ru facilitated hydrogen spillover and enhanced water-involving redox pathways, and the oxygen-vacancy-rich GDC support supplied mobile lattice oxygen that enabled continuous carbon removal and redox cycling. These results highlight the importance of tuning metal-support interactions and exploiting redox-active supports in the design of durable reforming catalysts for efficient hydrogen production.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153949"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186913","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

Chemoresistive gas sensor arrays based on bimetallic-species-loaded SnO2 nanospheres for identification of hydrogen/methane mixtures 基于双金属负载SnO2纳米球的化学阻性气体传感器阵列用于识别氢/甲烷混合物

IF 8.3 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2026-03-13 Epub Date: 2026-02-11 DOI: 10.1016/j.ijhydene.2026.153956

Ang Li , Sikai Zhao , Jinzhou Bai , Meili Wu , Shuling Gao , Yanbai Shen , Zhenyu Yuan , Fanli Meng

{"title":"Chemoresistive gas sensor arrays based on bimetallic-species-loaded SnO2 nanospheres for identification of hydrogen/methane mixtures","authors":"Ang Li , Sikai Zhao , Jinzhou Bai , Meili Wu , Shuling Gao , Yanbai Shen , Zhenyu Yuan , Fanli Meng","doi":"10.1016/j.ijhydene.2026.153956","DOIUrl":"10.1016/j.ijhydene.2026.153956","url":null,"abstract":"<div><div>Blending low concentrations of hydrogen (H<sub>2</sub>) into existing natural gas pipelines provides a cost-effective transitional strategy for large-scale H<sub>2</sub> utilization. However, stratification between H<sub>2</sub> and methane (CH<sub>4</sub>) may create hazardous H<sub>2</sub>-rich zones, necessitating robust sensing technologies to warn of pipeline embrittlement risks. Herein, four types of BM/SnO<sub>2</sub> (BM = Pt–Au or Pd–Pt) nanospheres (NS, ∼400 nm) were synthesized by photochemical deposition. At 400 °C, BM/SnO<sub>2</sub> NS exhibited rapid and stable sensing behavior, with theoretical detection limits of 0.21 ppm for H<sub>2</sub> and 1.07 ppm for CH<sub>4</sub>, and response/recovery times below 3 s/36 s and 10 s/33 s, respectively. Spectroscopic analyses indicated that AuSn alloys enhanced the H<sub>2</sub> response of Pt–Au/SnO<sub>2</sub> NS via a spillover mechanism, while Pd–Pt species reduced the activation energy for CH<sub>4</sub> oxidation. Sensor arrays combined with machine-learning models enabled accurate classification and quantification of H<sub>2</sub>/CH<sub>4</sub> mixtures, achieving 97% accuracy using resistance data from the initial 6 s response phase.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"217 ","pages":"Article 153956"},"PeriodicalIF":8.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186978","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