International Journal of Hydrogen Energy最新文献

英文中文

Retraction notice to "Development of SnCo2O4 spinel supported on the rGO nanosheet with the improved electrochemical performance of OER activity" [International Journal of Hydrogen Energy 51 (2024) 436-447] “在还原氧化石墨烯纳米片上支持SnCo2O4尖晶石并提高OER活性的电化学性能”的撤回通知[International Journal of Hydrogen Energy 51 (2024) 436-447]

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-08-05 Epub Date: 2026-07-16 DOI: 10.1016/j.ijhydene.2026.156511

Hossam Donya, Salma Aman, Naseeb Ahmad, Hafiz Muhammad Tahir Farid, Taha Abdel Mohaymen Taha

引用次数: 0

Gd–Sm dual rare-earth co-doped La0.5Sr0.5FeO3-δ cathode with enhanced ORR activity and CO2 durability for IT-SOFC Gd-Sm双稀土共掺La0.5Sr0.5FeO3-δ阴极，增强了IT-SOFC的ORR活性和CO2耐久性

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-06-26 DOI: 10.1016/j.ijhydene.2026.156244

Jiahao Yang, Xiaofei Zhu, Xuanhao Zhao, Qiwei Chen, Bingwu Wang, Jinghe Bai

La_0.5Sr_0.5FeO_3-δ (LSF) is limited by sluggish oxygen reduction reaction (ORR) kinetics and poor CO₂ tolerance for intermediate-temperature solid oxide fuel cells (IT-SOFCs). Herein, Gd–Sm A-site co-doped La_0.3Gd_0.1Sm_0.1Sr_0.5FeO_3-δ (LSFGS) was designed and synthesized. Its properties were systematically compared with those of pristine LSF and single-doped La_0.4Sm_0.1Sr_0.5FeO_3-δ and La_0.4Gd_0.1Sr_0.5FeO_3-δ. The results indicate that A-site doping significantly increases the oxygen vacancy concentration in the perovskite lattice, improves the gas diffusion kinetics on the cathode surface and the ionic transport capability within the crystal lattice, thereby effectively accelerating the ORR. At 700 °C, LSFGS shows a low area-specific resistance of 0.075 Ω cm² and delivers a peak power density of 0.99 W cm⁻², 2.54 times that of LSF. It also exhibits excellent 100 h stability and outstanding CO₂ tolerance. This work provides a feasible co-doping strategy for high-performance IT-SOFC cathodes.

La0.5Sr0.5FeO3-δ (LSF)在中温固体氧化物燃料电池（IT-SOFCs）中受到氧还原反应（ORR）动力学缓慢和CO2耐受性差的限制。本文设计并合成了Gd-Sm a位共掺杂La0.3Gd0.1Sm0.1Sr0.5FeO3-δ (LSFGS)。将其性能与原始LSF、单掺杂La0.4Sm0.1Sr0.5FeO3-δ和La0.4Gd0.1Sr0.5FeO3-δ进行了系统比较。结果表明，a位掺杂显著提高了钙钛矿晶格中的氧空位浓度，改善了阴极表面气体扩散动力学和晶格内离子输运能力，从而有效地加速了ORR。在700 °C时，LSFGS的面积比电阻为0.075 Ω cm2，峰值功率密度为0.99 W cm−2，是LSF的2.54倍。它还具有优异的100 h稳定性和出色的CO2耐受性。这项工作为高性能IT-SOFC阴极提供了一种可行的共掺杂策略。

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引用次数: 0

Assessment of first-order conditional moment closure for lean H2-air turbulent premixed flames using direct numerical simulation data 利用直接数值模拟数据评估稀薄h2 -空气湍流预混火焰的一阶条件矩闭性

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-06-28 DOI: 10.1016/j.ijhydene.2026.156214

Hamid Kavari, Nilanjan Chakraborty

An a priori assessment of first-order Conditional Moment Closure (CMC) for turbulent lean H₂–air premixed flames was conducted using Direct Numerical Simulation (DNS) data for statistically planar flames with equivalence ratios of 0.4 and 0.7 under varying turbulence intensities. A presumed β-Probability Density Function (PDF) has been shown to capture the qualitative behaviour of the Favre-conditioned PDF of the reaction progress variable, although quantitative discrepancies remain. Existing models for conditional mean velocity perform satisfactorily, while conditional scalar dissipation rate models reproduce DNS trends qualitatively but with quantitative discrepancies linked to inaccuracies in Favre-averaged scalar dissipation rate and PDF predictions. First-order CMC predicts conditional mean reaction rates accurately for H₂ and H₂O but overpredicts O₂ reaction rates due to elevated conditional variance. DNS data also reveal counter-gradient conditional scalar fluxes associated with sub-unity Lewis number effects, highlighting the need for improved scalar flux closures.

利用直接数值模拟（DNS）数据，对不同湍流强度下等效比为0.4和0.7的统计平面火焰进行了一阶条件矩闭性（CMC）的先验评估。假设的β-概率密度函数（PDF）已被证明可以捕获反应过程变量的favre条件PDF的定性行为，尽管定量差异仍然存在。现有的条件平均速度模型表现令人满意，而条件标量耗散率模型定性地再现了DNS趋势，但由于favre平均标量耗散率和PDF预测的不准确性，存在定量差异。一阶CMC准确预测H2和H2O的条件平均反应速率，但由于条件方差升高，对O2反应速率的预测过高。DNS数据还揭示了与亚单位路易斯数效应相关的反梯度条件标量通量，强调了改进标量通量闭包的必要性。

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引用次数: 0

Adsorption-based hydrogen Storage: A comprehensive review and comparative analysis of cryogenic sorption data 基于吸附的储氢：低温吸附数据的综合回顾和比较分析

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-06-27 DOI: 10.1016/j.ijhydene.2026.156054

Maria-Sophie Günther, Xiaoxian Yang, Daniel Zipplies, Eric F. May, Markus Richter

Achieving emissions neutrality requires major advances in hydrogen storage technologies. Adsorption on porous materials offers a potential alternative to conventional compression and liquefaction with advantages in safety and energy efficiency. This review examines hydrogen adsorption isotherms for metal–organic frameworks (MOFs), zeolites, and carbon-based materials at 77 K and 298 K using data from the NIST/ARPA-E adsorbent database (up to January 2026). Key aspects including ortho–para hydrogen isomerism, physisorption mechanisms, measurement methods, and adsorption metrics are discussed. Large variability in reported data arises from inconsistent reporting of adsorption type, measurement uncertainty, and hydrogen isomer composition. At 298 K, adsorption capacities remain low (<5 mmol/g), while at 77 K capacities increase substantially, with IRMOF-1 reaching ∼30 mmol/g. MOFs generally show the highest capacities, whereas zeolites and activated carbons may provide superior stability. Standardized methodologies are needed for reliable comparison and technology development.

实现零排放需要在储氢技术方面取得重大进展。多孔材料的吸附为传统的压缩和液化提供了潜在的替代方案，具有安全和节能的优势。本文利用NIST/ARPA-E吸附剂数据库（截至2026年1月）的数据，研究了金属有机框架（mof）、沸石和碳基材料在77 K和298 K下的氢吸附等温线。讨论了邻对氢异构、物理吸附机理、测量方法和吸附指标等关键方面。报告数据的巨大差异源于吸附类型、测量不确定度和氢异构体组成的不一致报告。在298 K时，吸附量仍然很低（<5 mmol/g），而在77 K时，吸附量大幅增加，IRMOF-1达到~ 30 mmol/g。mof通常表现出最高的容量，而沸石和活性炭可能提供更好的稳定性。需要标准化的方法进行可靠的比较和技术开发。

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引用次数: 0

A hybrid q-rung orthopair fuzzy AHP-TOPSIS method for assessing hydrogen production potential: The case study from Türkiye 混合q-rung矫形模糊AHP-TOPSIS法评价制氢潜力：来自<s:1> rkiye的案例研究

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-06-26 DOI: 10.1016/j.ijhydene.2026.156251

Filiz Arslantürk, Özge Nalan Bilişik

The increasing need for sustainable and low-carbon energy sources has brought hydrogen to the forefront of global energy strategies. This study aims to evaluate renewable energy alternatives for hydrogen production in Türkiye by applying a hybrid multi-criteria decision-making (MCDM) methodology which integrates the Analytic Hierarchy Process (AHP) and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) under the q-Rung Orthopair Fuzzy Set (q-ROFS) environment. Twenty-one evaluation criteria, across five dimensions were used to assess six renewable energy sources.

The results indicate that geothermal energy is the most suitable renewable alternative for hydrogen production in Türkiye. A sensitivity analysis was conducted to evaluate the stability of the rankings. This study provides a practical decision-support tool for policymakers and investors to align hydrogen strategies with Türkiye's renewable energy potential. Future extensions may incorporate geospatial data analytics and machine learning for region-specific evaluations using real-time data.

对可持续和低碳能源日益增长的需求使氢成为全球能源战略的前沿。本研究旨在通过应用混合多准则决策（MCDM）方法，在q-Rung Orthopair Fuzzy Set （q-ROFS）环境下集成层次分析法（AHP）和理想解相似性排序偏好技术（TOPSIS），评估 rkiye可再生能源制氢替代品。21个评价标准，跨越5个维度，用于评估6种可再生能源。结果表明，地热能是我国最适宜的可再生制氢能源。进行敏感性分析以评估排名的稳定性。这项研究为政策制定者和投资者提供了一个实用的决策支持工具，使氢战略与 rkiye的可再生能源潜力保持一致。未来的扩展可能包括地理空间数据分析和使用实时数据进行区域特定评估的机器学习。

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引用次数: 0

Understanding the catalyst deactivation mechanism during methane pyrolysis for Turquoise hydrogen production over Ce–Ni-phyllosilicate ce - ni -层状硅酸盐上绿松石制氢甲烷热解催化剂失活机理的研究

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-06-28 DOI: 10.1016/j.ijhydene.2026.156280

Kalpana Manda, Venkatesham Kothabai, Satyapaul A. Singh, Sreedhar Inkollu, Sasikumar Boggala, Anjaneyulu Chatla, Sreepriya Vedantam, Ashok Jangam, Venugopal Akula

Turquoise hydrogen production via CH₄ pyrolysis was examined over a core–shell catalyst consisting of a CeO₂ shell and a Ni–SiO₂ core at moderate temperatures. The core–shell configuration effectively delayed catalyst deactivation during methane cracking. Regeneration studies using CO₂ demonstrated efficient carbon recovery, indicating its relevance for carbon capture and utilization strategies. The proximity of the CeO₂ shell to Ni active sites facilitated both the gasification of deposited carbon and enhanced CH₄ activation at relatively lower temperatures. The superior catalytic performance is attributed to the facile reduction of NiO and improved dispersion of Ni⁰ species. CH₄ and/or CO₂ - DRIFTS results suggested that incorporation of ceria in the core–shell structure induced the lattice distortion and enhanced oxygen mobility arising from Ni–ceria interactions (CeO₂-Ni-PS) for improving the reducibility of Ni. Complementary analyses of spent catalysts using TGA, Raman, and TEM provided insight into the origin of delayed deactivation.

在CeO2壳层和Ni-SiO2壳层组成的核壳催化剂上，在中等温度下研究了绿松石甲烷热解制氢。核壳结构有效地延缓了甲烷裂解过程中催化剂的失活。利用二氧化碳的再生研究证明了有效的碳回收，表明其与碳捕获和利用策略的相关性。CeO2壳靠近Ni活性位点有利于沉积碳的气化，并在相对较低的温度下增强CH4活化。优异的催化性能是由于NiO易于还原和Ni0组分的分散性改善。CH4和/或CO2 - DRIFTS结果表明，在核壳结构中掺入铈引起晶格畸变，并增强了Ni- ceria相互作用（CeO2-Ni-PS）引起的氧迁移率，从而提高了Ni的还原性。利用热重分析仪、拉曼光谱和透射电镜对废催化剂进行了补充分析，从而深入了解了延迟失活的原因。

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引用次数: 0

Low-field NMR reveals CO2 injection sequence and aqueous medium effects on pore-scale oil recovery in laminated shale 低场核磁共振揭示了CO2注入顺序和水介质对层状页岩孔隙级采收率的影响

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-06-28 DOI: 10.1016/j.ijhydene.2026.156227

Jianguang Wei, Ping Fu, Xiaodong Dai, Haoran Cheng, Zhejun Pan, Demiao Shang, Rui Wang, Xiaofeng Zhou, Yuanqing Zhang

This study employs low-field NMR to experimentally investigate how CO₂ injection sequence and aqueous medium type affect pore-scale oil recovery in laminated continental shale. Four core-flooding tests were conducted with two sequences (CO₂-first vs. aqueous-first) and two aqueous fluids (slickwater vs. guar gum), all at a 1:1 volumetric ratio. Results show that CO₂-first with slickwater achieves the highest recovery (37.2%), while guar gum pre-flush yields the lowest (27.0%). Interlayer clay-hosted porosity dominates both initial oil storage (58.0–70.4%) and recovery contribution (58.1–79.9%). CO₂ pre-injection enables unimpeded diffusion into sub-10 nm interlayer spaces, maximizing hydrocarbon vaporization, whereas guar gum adsorption and water blockage suppress extraction. The interplay between diffusional extraction and viscous displacement is critically governed by staging order and aqueous-phase rheology. These findings demonstrate that a CO₂-preflush followed by low-viscosity slickwater optimally harnesses both mechanisms for enhanced oil recovery in tight shales.

利用低场核磁共振实验研究了CO2注入顺序和含水介质类型对层状陆相页岩孔隙级采收率的影响。四次岩心驱替试验采用了两种顺序（co2优先vs水优先）和两种含水流体（滑溜水vs瓜尔胶），体积比均为1:1。结果表明：CO2-first法回收率最高（37.2%），瓜尔胶预冲法回收率最低（27.0%）；层间粘土储集孔隙度在初始储油量（58.0 ~ 70.4%）和采收率贡献（58.1 ~ 79.9%）中均占主导地位。CO2预注入可使CO2不受阻碍地扩散到10 nm以下的层间空间，最大限度地提高碳氢化合物的汽化，而瓜尔胶的吸附和水堵塞抑制了萃取。扩散萃取和黏性驱替之间的相互作用主要由分级顺序和水相流变学决定。这些研究结果表明，co2预冲洗后加入低粘度滑溜水，可以很好地利用这两种机制来提高致密页岩的采收率。

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引用次数: 0

Nanopillars-mediated interfacial engineering on porous transport layer for proton-exchange-membrane water electrolysis 质子交换膜电解多孔传输层的纳米柱介面工程

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-06-27 DOI: 10.1016/j.ijhydene.2026.156211

Shufeng Yang, Gaoqiang Yang, Bin Hou, Shengyang Zheng, Jianing You, Shuwan Luo, Yifang Song, Zhiqiang Xie

Optimized interfacial contact between the porous transport layer (PTL) and catalyst layer (CL) is essential for achieving high performance in proton exchange membrane water electrolyzers (PEMWEs). In this research, a chemical etching process was developed to engineer uniform nanopillars on PTL surfaces. We found that the nanopillars on different types of PTLs exhibited varying performance improvements. Nanopillars-Mott and nanopillars-Ti felt reduced overpotentials by 56 mV and 45 mV versus pristine PTLs at 4 A/cm², respectively. The further Voltage breakdown analysis reveals that nanopillars in Mott (lower porosity, extended contact) mainly decrease ohmic overpotential and enhance mass transport, while in Ti felt (larger porosity, limited contact), they reduce both kinetic and ohmic overpotentials. Accelerated stress tests (10k cycles) and post SEM results confirm excellent structural and electrochemical stability. Overall, chemical etching is a feasible method to optimize interface between PTL and CL for high-performance PEMWEs.

优化多孔传输层（PTL）和催化剂层（CL）之间的界面接触是实现质子交换膜水电解槽（PEMWEs）高性能的必要条件。在这项研究中，开发了一种化学蚀刻工艺来在PTL表面上制造均匀的纳米柱。我们发现不同类型ptl上的纳米柱表现出不同的性能改善。纳米柱- mott和纳米柱- ti相对于原始ptl在4 A/cm2时分别降低了56 mV和45 mV。进一步的电压击穿分析表明，纳米柱在Mott中（低孔隙率，扩大接触）主要降低欧姆过电位，增强质量传递，而在Ti毡中（大孔隙率，有限接触），它们同时降低了动力学和欧姆过电位。加速应力测试（10k循环）和后SEM结果证实了优异的结构和电化学稳定性。综上所述，化学蚀刻是优化PTL和CL之间界面的一种可行的方法。

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引用次数: 0

Corrigendum to “Economic feasibility of solar-driven hydrogen photoelectrochemical systems: Insights from a real options analysis” [Int J Hydrogen Energy 247 (2026) 1 July 2026,155753] “太阳能驱动的氢光电化学系统的经济可行性：从实物期权分析的见解”[J]氢能源247(2026)1七月2026,155753]

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-07-02 DOI: 10.1016/j.ijhydene.2026.156292

Luis Garcia-Covarrubias, Thomas M. Van-Rensburg, Susana Leão, Pau Farras, Luis Peña-Lévano

引用次数: 0

Corrigendum to “Solid adsorbents for hydrogen storage: Unified comparative assessment of MOFs, COFs, carbons, and POPs against DOE targets” [Int J Hydrogen Energy 235 (2026) 155220] “用于储氢的固体吸附剂：MOFs， COFs，碳和持久性有机污染物与DOE目标的统一比较评估”的勘误[J J hydrogen Energy 235 (2026) 155220]

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-07-22 Epub Date: 2026-07-02 DOI: 10.1016/j.ijhydene.2026.156288

Abdulrahman Danlami Isa, Aliyu Adebayo Sulaimon

引用次数: 0

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