International Journal of Hydrogen Energy最新文献_第4页

Thermodynamic analysis and investigation of phase evolution in the Mg–Ni–Ce system obtained by mechanical alloying and spark plasma sintering 机械合金化和火花等离子烧结制备的Mg-Ni-Ce体系的热力学分析和相演化研究

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-12 DOI: 10.1016/j.ijhydene.2026.153846

Muкhamedova Nuriya , Miniyazov Arman , Sokolov Igor , Ospanova Zhanna , Uazyrkhanova Gulzhaz , Sabyrtaeva Aisara , Оken Ospan , Bekmagambetova Balzhan

A comprehensive thermodynamic and kinetic modeling, as well as an experimental investigation, was carried out for the Mg–Ni–Ce system aimed at applications as solid-state hydrogen storage materials. Based on CALPHAD calculations in Thermo-Calc for compositions Mg85Ni10Ce5, Mg90Ni7Ce3, and Mg95Ni3Ce2 in the temperature range of 450–500 °C, isothermal sections of the phase diagram of the Mg–Ni–Ce system were constructed, equilibrium phase regions were determined, and the optimal conditions for the formation of hydride-active intermetallics Mg₂Ni and Mg₁₂Ce phases were predicted. Diffusion modeling in DICTRA showed limited mutual diffusion depths (<30 nm) over 180 s at 480 °C and a pronounced asymmetry of the Matano plane, caused by differences in the self-diffusion coefficients of Mg, Ni, and Ce. Experimentally, powders with the composition Mg90Ni7Ce3 were prepared by mechanical alloying at different ball-to-powder mass ratios (BPR = 10:1 and 30:1), followed by spark plasma sintering (SPS) at 500–560 °C, 1 MPa, for 5 min. X-ray diffraction (XRD) analysis revealed the sequential formation of Mg₂Ni and Ce–Mg phases during milling, accompanied by defect accumulation and distortion of the Mg crystal lattice. The intermetallic phase Ce₂Mg₁₇, absent after mechanical alloying, was detected only after SPS in the 480-500 °C range, indicating enhanced interaction between Ce and Ni under pulsed heating.

Comparison of the calculated phase diagrams with the experimentally observed phase evolution highlighted Mg-rich compositions near Mg95Ni3Ce2 and the temperature range of 480–500 °C as the optimal compromise between the thermodynamic stability of Mg₂Ni. Mg₁₂Ce intermetallics and controlled phase densification. The results provide a thermodynamically grounded approach to designing Mg–Ni–Ce systems for hydrogen storage and establish a basis for further studies on sorption–desorption behavior and cyclic stability within the selected compositional range.

对Mg-Ni-Ce体系作为固态储氢材料的应用进行了全面的热力学和动力学建模，并进行了实验研究。在450 ~ 500℃的温度范围内，利用热钙法对Mg85Ni10Ce5、Mg90Ni7Ce3和Mg95Ni3Ce2进行calhad计算，构建了Mg-Ni-Ce体系相图的等温截面，确定了平衡相区，预测了氢化活性金属间化合物Mg2Ni和Mg12Ce相形成的最佳条件。DICTRA中的扩散模型显示，在480°C下，180 s内相互扩散深度有限（<30 nm）， Matano面明显不对称，这是由Mg、Ni和Ce的自扩散系数不同引起的。在不同球粉质量比（BPR = 10:1和30:1）下，采用机械合金化法制备Mg90Ni7Ce3粉末，并在500 ~ 560℃、1 MPa、5 min条件下进行放电等离子烧结（SPS）。x射线衍射（XRD）分析表明，在铣削过程中，Mg2Ni相和Ce-Mg相相继形成，并伴有缺陷积累和Mg晶格畸变。金属间相Ce2Mg17在480 ~ 500℃范围内不存在，仅在SPS后才被检测到，表明脉冲加热增强了Ce和Ni之间的相互作用。将计算得到的相图与实验观察到的相演化进行比较，发现在Mg95Ni3Ce2附近富mg成分和480 ~ 500℃的温度范围是Mg2Ni热力学稳定性的最佳折衷。Mg12Ce金属间化合物与控制相致密化。研究结果为设计Mg-Ni-Ce储氢体系提供了热力学依据，并为进一步研究其在选定成分范围内的吸附-解吸行为和循环稳定性奠定了基础。

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引用次数: 0

Optimal configuration of a port integrated energy system considering the nonlinearity of hydrogen-blended gas turbines 考虑混合氢燃气轮机非线性的港口综合能源系统优化配置

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-12 DOI: 10.1016/j.ijhydene.2026.153897

Xianzhi Jia , Yujia Song , Dazhi Yang , Qi Gao , Jinjun Bai

To address carbon emissions from global ports, this work constructs a low-carbon port integrated energy system (PIES) that combines solar power, hydrogen energy storage, hydrogen-blended gas turbine (HBGT), and carbon capture, utilization, and storage (CCUS). The proposed PIES leverages the complementarity among various energy components to achieve the optimal configuration with the minimum total annual cost and realize deep carbon reduction. A nested optimization algorithm integrating an improved PSO into a mixed-integer linear program is designed to address the nonlinearity introduced by the HBGT in the PIES configuration problem. More specifically, the PSO is used to optimize the dynamic blending ratio of hydrogen and natural gas, which resolves the modeling inaccuracy of conventional models that use a fixed ratio. A case study of a port in Dalian determines the optimal PIES configuration as follows: HBGTs rated at 7.040 MW, electrolyzers at 14.638 MW, hydrogen storage tanks with a capacity of 1881 kg, and carbon capture devices rated at 1.363 MW. Results indicate that considering nonlinear HBGT output increases its annual power supply by 15.33%, while reducing natural gas consumption by 3.74%, carbon emissions by 63.82%, and total annual cost by 1.38%. Incorporating CCUS raises the total annual cost by 10.98% but cuts carbon emissions by 87.96%.

为了解决全球港口的碳排放问题，本工作构建了一个低碳港口综合能源系统（PIES），该系统将太阳能发电、氢储能、氢混合燃气轮机（HBGT）和碳捕集、利用和封存（CCUS）相结合。所提出的馅饼利用各种能源成分之间的互补性，以最小的年总成本实现最佳配置，实现深度碳减排。设计了一种将改进的粒子群优化算法集成到混合整数线性规划中的嵌套优化算法，以解决HBGT引入的非线性问题。具体来说，利用粒子群算法对天然气和氢气的混合比例进行动态优化，解决了传统模型使用固定比例建模的不准确性问题。以大连某港口为例，确定了最佳配置为：额定功率为7.040 MW的HBGTs、14.638 MW的电解槽、1881 kg的储氢罐、1.363 MW的碳捕集装置。结果表明，考虑非线性后，HBGT的年供电量增加15.33%，天然气消耗减少3.74%，碳排放减少63.82%，年总成本减少1.38%。合并CCUS将使年度总成本提高10.98%，但减少了87.96%的碳排放。

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引用次数: 0

Synergistic catalytic effects of Ti0.10Zr0.15V0.35Cr0.10Ni0.30 alloy and Pd/C composites on MgH2 hydrogen storage properties Ti0.10Zr0.15V0.35Cr0.10Ni0.30合金和Pd/C复合材料对MgH2储氢性能的协同催化作用

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-13 DOI: 10.1016/j.ijhydene.2026.154031

Jiangtao He , Xinwei Wang , Ming Gao , Yugang Su , Hongsheng Jia

Magnesium hydride (MgH₂) suffers from sluggish kinetics and high operational temperatures, hindering practical hydrogen storage. We pioneer a spatially decoupled catalytic strategy that assigns distinct roles to Ti₀.₁₀Zr₀.₁₅V₀.₃₅Cr₀.₁₀Ni₀.₃₀ (TA) alloy (bulk diffusion promoter) and Pd/C (surface dissociation catalyst), overcoming the inherent coupling of rate-limiting steps in MgH₂. This design achieves near-ambient absorption (4.56 wt% at 100 °C) and eliminates activation cycles—a milestone unattained by single-catalyst systems. Kissinger analysis confirms a 46.0% reduction in activation energy (78.8 kJ/mol) for the surface-limited step, directly validating the spatial separation of catalytic functions. Crucially, the composite retains 92.3% capacity after 30 cycles with negligible kinetic degradation (0.40% decay/cycle), eliminating the need for activation. This work establishes a spatially coupled catalytic mechanism that decouples surface and bulk processes, enabling a lower operating temperature for MgH₂.

氢氧化镁（MgH2）存在动力学迟缓和操作温度高的问题，阻碍了氢的实际储存。我们开创了一种空间解耦催化策略，该策略赋予Ti0.10Zr0.15V0.35Cr0.10Ni0.30 （TA）合金（体扩散促进剂）和Pd/C（表面解耦催化剂）不同的作用，克服了MgH2中固有的限速步骤耦合。该设计实现了近环境吸收（100°C时为4.56 wt%），并消除了活化循环，这是单催化剂系统无法实现的里程碑。Kissinger分析证实，表面限制步骤的活化能降低了46.0% (78.8 kJ/mol)，直接验证了催化功能的空间分离。最重要的是，该复合材料在30次循环后仍保持92.3%的容量，而动力学降解可以忽略不计（0.40%衰减/循环），无需活化。这项工作建立了一个空间耦合的催化机制，将表面和体过程解耦，使MgH2的工作温度更低。

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引用次数: 0

Achieving 9.7 wt% hydrogen mass fraction with enhanced adsorption in wavy alternating magnesium/chromium–titanium alloy monolayers 在波浪状交替镁/铬-钛合金单层中，通过增强吸附，获得9.7 wt%的氢质量分数

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-11 DOI: 10.1016/j.ijhydene.2026.153959

Xing Yang, Xuchang Zhang, Dan Cai, Yongpeng Xia, Chaohao Hu

We report ab initio calculations of the relationship between the total energy and the Mg/Ti interlayer distance for symmetric and antisymmetric cases, and of the hydrogen-atom adsorption energy at Mg/Ti interfaces doped with Cr and V atoms. Bader charge analysis is performed for Cr doping, followed by total-energy calculations for a single hydrogen atom located in different positions within the Mg/Ti slab and at the interface. Furthermore, the density of states for each atom and orbital at the Mg/Ti interfaces is analyzed after Cr doping and hydrogen adsorption. Our findings reveal that the changes in adsorption energy are due to the reduction in charge inhomogeneity difference between the hydrogenated and non-hydrogenated states. The d-electrons of dopant elements (Cr, V) play a crucial role in forming chemical bonds and regulating charge inhomogeneity. In accordance with the novel theory, the slightly modified wave structure exhibits record hydrogen mass fraction (9.7 wt%) with recommended adsorption properties (−0.2 eV

\sim

−0.8 eV). This work provides new insights into the classification, design, and engineering of hydrogen storage materials with improved adsorption energy.

我们报道了从头计算对称和反对称情况下总能量与Mg/Ti层间距离之间的关系，以及掺杂Cr和V原子的Mg/Ti界面上氢原子的吸附能。对Cr掺杂进行了Bader电荷分析，然后对位于Mg/Ti板内不同位置和界面处的单个氢原子进行了总能量计算。进一步分析了Cr掺杂和氢吸附后Mg/Ti界面上各原子和轨道的态密度。我们的研究结果表明，吸附能的变化是由于氢化和非氢化状态之间电荷不均匀性差异的减少。掺杂元素（Cr， V）的d电子在形成化学键和调节电荷不均匀性方面起着至关重要的作用。根据新的理论，稍微修改的波结构显示出创纪录的氢质量分数（9.7 wt%）和推荐的吸附性能（−0.2 eV ~−0.8 eV）。这项工作为具有改进吸附能的储氢材料的分类、设计和工程提供了新的见解。

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引用次数: 0

Transport of hydrogen-blended natural gas in transmission pipelines under steady, slow-transient, and rapid-transient conditions 氢混合天然气在稳定、慢瞬态和快瞬态条件下的管道输送

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-11 DOI: 10.1016/j.ijhydene.2026.153887

Pengbing Wang , Yongjian Li , Lin Yang , Xin Tian , Shaoguang Feng , Fei Guo

Hydrogen blending into existing natural gas infrastructure represents a practical pathway for large-scale hydrogen transport. A fully coupled non-isothermal transient flow model is developed to systematically investigate pipeline transport behavior across the full 0–100% hydrogen blending range. The model rigorously incorporates hydrogen-dependent thermophysical properties, thermal effects, and elevation influences. Steady, slow transient, and rapid transient conditions are systematically examined. The results indicate that, under constant energy delivery, pressure loss exhibits a non-monotonic dependence on hydrogen fraction, reaching a maximum at approximately 80% blending. System energy efficiency attains a minimum near 50%, while pressure fluctuations intensify within the 80–90% blending range, suggesting an unfavorable operating interval. During rapid transients, increasing hydrogen fraction accelerates pressure wave propagation and shortens recovery times, thereby enhancing the dynamic stability of the pipeline system.

将氢气混合到现有的天然气基础设施中是大规模氢气输送的可行途径。建立了一个完全耦合的非等温瞬态流动模型，系统地研究了整个0-100%氢气混合范围内的管道输送行为。该模型严格地结合了氢依赖的热物理性质、热效应和海拔影响。系统地检查了稳态、慢瞬态和快速瞬态条件。结果表明，在能量输出恒定的情况下，压力损失与氢分数呈非单调依赖关系，在混合约80%时达到最大值。系统能源效率在50%附近达到最低，而压力波动在80-90%的混合范围内加剧，表明不利的运行间隔。在快速瞬变过程中，增加氢气含量加速了压力波的传播，缩短了恢复时间，从而提高了管道系统的动态稳定性。

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引用次数: 0

Explosion dynamics of hydrogen-blended natural gas perturbed by CO2 injection in a closed duct 封闭管道内CO2注入扰动氢混合天然气的爆炸动力学

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-12 DOI: 10.1016/j.ijhydene.2026.153988

Yuchun Zhang, Wen Yang, Kun Zhang, Baoping Jiang, Xufeng Yang

This study investigates flame propagation and overpressure dynamics of hydrogen-blended natural gas (hydrogen blending ratio, X_H2 = 0-0.8) perturbed by CO₂ injection in a closed duct. CO₂ was injected with an injection time (t_inject) varied from 0 to 600 ms, and an initial pressure of 1.00 MPa. Results show that CO₂ injection wrinkles the flame front by turbulent perturbations, promoting flame acceleration. Jet exhibits a stimulating effect, causing the most severe explosion at t_inject = 60 ms. As CO₂ injection exceeds 60 ms, the dilution effect gradually increases, weakening the turbulent enhancement and reducing the explosion intensity. CO₂ injection of 300 ms is a critical time, causing a transition from explosion-promoting to explosion-suppressing. For a given X_H2, the maximum overpressure and flame velocity first increase and then decrease with t_inject. Lower X_H2 requires a shorter injection time to reach the lowest flammability limit and exhibits greater sensitivity to CO₂ injection.

本文研究了在密闭管道内注入CO2扰动下混合氢天然气（混合氢比XH2 = 0-0.8）的火焰传播和超压动力学。CO2注入时间为0 ~ 600ms，初始压力为1.00 MPa。结果表明：CO2注入通过紊流扰动使火焰锋面起皱，促进火焰加速；射流表现出刺激作用，在喷射= 60ms时引起最严重的爆炸。当CO2注入超过60 ms时，稀释效应逐渐增强，湍流增强减弱，爆炸强度降低。300 ms的CO2注入是一个关键时刻，它将导致从促爆到抑爆的转变。对于一定的XH2，最大超压和火焰速度随喷射先增大后减小。较低的XH2需要更短的喷射时间才能达到最低的可燃性极限，并且对CO2喷射具有更高的敏感性。

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引用次数: 0

Optimal siting of wind powered green hydrogen production in Bangladesh using interval-valued T-spherical fuzzy multi-criteria decision-making method 区间值t球模糊多准则决策方法在孟加拉国风电绿色制氢选址中的应用

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-12 DOI: 10.1016/j.ijhydene.2026.153931

Tausif Ali , Ahmet Aytekin , Mihail Demidionov

The transition to a hydrogen-based energy system requires site-specific planning to ensure cost-effectiveness and sustainability. This study proposes an integrated framework combining Simple Weight Calculation (SIWEC) and Stable Preference Ordering Towards Ideal Solution (SPOTIS) within an interval-valued T-spherical fuzzy environment to identify optimal sites for wind-powered hydrogen production in Bangladesh. Ten years of ERA5 wind data at 100 m hub height were analyzed alongside techno-economic, climatic, geographical, socio-economic, and risk indicators derived from secondary sources and expert judgment. Results show moderate wind resources (3–5 m/s), with Noakhali, Thakurgaon, and Feni identified as the most suitable locations. The H165-4.0 MW turbine outperformed larger alternatives, yielding 58–68% higher energy output under local conditions. Sensitivity analysis reveals rectifier efficiency and discount rate as key drivers of levelized cost of hydrogen, while scenario analysis indicates a 47% cost reduction at top sites, highlighting policy and technology dependence.

向氢基能源系统的过渡需要具体的场地规划，以确保成本效益和可持续性。本研究提出了一个综合框架，结合简单权重计算（SIWEC）和对理想解决方案的稳定偏好排序（SPOTIS），在区间值t球形模糊环境中确定孟加拉国风电制氢的最佳地点。对ERA5 10年100 m枢纽高度的风数据进行了分析，并结合二次来源和专家判断得出的技术经济、气候、地理、社会经济和风险指标进行了分析。结果表明：风力资源适中（3 ~ 5 m/s）， Noakhali、Thakurgaon和Feni是最适宜的位置；H165-4.0兆瓦涡轮机的性能优于大型替代品，在当地条件下的能量输出高出58-68%。敏感性分析显示，整流器效率和贴现率是氢气平准化成本的关键驱动因素，而情景分析显示，顶级站点的成本降低了47%，突出了政策和技术的依赖性。

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引用次数: 0

Corrigendum to “Study on hydrogen embrittlement susceptibility of X80 steel through in-situ gaseous hydrogen permeation and slow strain rate tensile tests” [Int J Hydrogen Energy 48 (2023) 243–256] “通过原位气体氢渗透和慢应变速率拉伸试验研究X80钢的氢脆敏感性”的勘误表[J]氢能48 (2023)243-256]

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-20 DOI: 10.1016/j.ijhydene.2026.153960

Cailin Wang , Jiaxuan Zhang , Cuiwei Liu , Qihui Hu , Rui Zhang , Xiusai Xu , Hongchao Yang , Yuanxing Ning , Yuxing Li

引用次数: 0

Exergy and sustainability analysis of methylamine borane-enhanced gasoline fuel blends 甲胺硼烷增强汽油燃料混合物的可持续性分析

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-11 DOI: 10.1016/j.ijhydene.2026.153700

Ahmet Yakın , Taha Tuna Göksu , Mehmet Gülcan

This experimental study examines the energetic and exergetic performance of hydrogen-rich methylamine-borane (MAB) fuel blends in a spark-ignition gasoline engine. To assess the efficacy of solid-state hydrogen carriers, MAB was solubilized in ethanol and mixed with gasoline at volume ratios of 5% (MAB5) and 10% (MAB10). Experiments were performed at a constant speed of 2500 rpm across different engine loads: 0%, 25%, 50%, 75%, and 100%. The findings demonstrate that MAB5 attained the highest exergy efficiency of 18.87% at full load, surpassing gasoline at 16.77% and MAB10. The observed efficiency gain results from the thermal decomposition of MAB, which releases hydrogen and enhances combustion kinetics, consequently minimizing thermodynamic irreversibilities within the system. As a result, MAB5 demonstrated the least entropy generation and exhaust exergy losses in comparison to the gasoline fuel. Increasing the additive ratio to 10% (MAB10) led to a decrease in exergetic performance, attributable to physicochemical constraints, thereby underscoring a significant tradeoff between hydrogen enrichment and fuel properties. MAB5 fuel was more efficient than others in the Sustainability Index results, which emphasize the importance of environmental impacts, with a high score of 1.23. The study presented showed that MAB fuels at low concentrations can be an effective source of hydrogen and could be practically applied in conventional spark-ignition engines to improve fuel efficiency and reduce environmental impact without requiring extensive engine modifications.

本实验研究考察了富氢甲胺-硼烷（MAB）燃料混合物在火花点火汽油机中的能量和火用性能。为了评估固态氢载体的效果，将MAB溶于乙醇中，并以5% （MAB5）和10% （MAB10）的体积比与汽油混合。实验在2500 rpm的恒定转速下进行，不同的发动机负载：0%，25%,50%，75%和100%。结果表明，MAB5在满载时的火用效率最高，达到18.87%，超过了汽油的16.77%和MAB10。观察到的效率增加是由于MAB的热分解，它释放氢并增强燃烧动力学，从而最大限度地减少了系统内的热力学不可逆性。因此，与汽油燃料相比，MAB5表现出最小的熵产和排气火用损失。由于物理化学的限制，将添加剂比例增加到10% （MAB10）会导致火用性能的下降，从而强调了氢富集和燃料性能之间的重要权衡。在强调环境影响重要性的可持续性指数结果中，MAB5燃料比其他燃料效率更高，得分为1.23。该研究表明，低浓度的MAB燃料是一种有效的氢源，可以实际应用于传统的火花点火发动机，以提高燃油效率，减少对环境的影响，而无需对发动机进行大量修改。

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引用次数: 0

Research on contact pressure uniformity and current density uniformity based on topology optimization and topology structure prediction method 基于拓扑优化和拓扑结构预测方法的接触压力均匀性和电流密度均匀性研究

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy

Pub Date : 2026-03-13 Epub Date: 2026-02-12 DOI: 10.1016/j.ijhydene.2026.153745

Wei Jiang , Kai Zhang , Yong Li , Bailin Zheng , Yue Kai

To enhance the uniformity of contact pressure and current density at the interface of proton exchange membrane fuel cell (PEMFC), this paper proposes a topology optimization method and a topology structure prediction approach. First, the end plate (EP) topology is optimized with the objective of maximizing its stiffness while constraining the minimum displacement at the contact interface between the bipolar plate (BPP) and the membrane electrode assembly (MEA). Second, structural and electrochemical simulations are conducted to analyze the uniformity of contact pressure at the BPP-MEA interface and the current density uniformity of the MEA before and after optimization. The results demonstrated that the uniformity of contact pressure and current density improved by 48.5 % and 29 %, respectively. Furthermore, it is observed that the interface contact stiffness exhibited a strong correlation with the topology-optimized structure. Based on this finding, a topology structure prediction method is developed by integrating contact stiffness distribution, equivalent compression stiffness algorithms, and topology optimization theory. A case study involving a sandwich structure revealed that the predicted structure achieved a 23.1 % improvement in the uniformity of interface contact pressure. Overall, this study provides methodological guidance for enhancing the uniformity of contact pressure and current density at PEMFC interface in engineering applications and offers theoretical support for predicting topology structures.

为了提高质子交换膜燃料电池（PEMFC）界面接触压力和电流密度的均匀性，提出了一种拓扑优化方法和拓扑结构预测方法。首先，对端板（EP）拓扑结构进行优化，使其刚度最大化，同时约束双极板（BPP）与膜电极组件（MEA）接触界面处的最小位移。其次，通过结构模拟和电化学模拟，分析优化前后BPP-MEA界面接触压力均匀性和MEA电流密度均匀性。结果表明，接触压力和电流密度的均匀性分别提高了48.5%和29%。此外，观察到界面接触刚度与拓扑优化结构表现出很强的相关性。基于这一发现，提出了一种结合接触刚度分布、等效压缩刚度算法和拓扑优化理论的拓扑结构预测方法。一个涉及三明治结构的案例研究表明，预测结构在界面接触压力均匀性方面取得了23.1%的改善。总体而言，该研究为工程应用中提高PEMFC界面接触压力和电流密度的均匀性提供了方法指导，并为预测拓扑结构提供了理论支持。

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引用次数: 0