Journal of Power Sources最新文献_第10页

Recent advances in polymer-modified electrodes for bioelectrochemical systems: A comprehensive review of microbial fuel cells, conductive polymers and biopolymer applications 生物电化学系统中聚合物修饰电极的最新进展：微生物燃料电池、导电聚合物和生物聚合物应用的综合综述

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-19 DOI: 10.1016/j.jpowsour.2026.239273

Divya Shanmugavel , Omar Solorza-Feria , Sathish Kumar Kamaraj

Polymer based electrodes and membranes hold considerable promises for advancing wastewater derived by bioelectrochemical systems (BES) at larger scale, since they combine improved electron transfer and power densities with high stability and well defined surface chemistry. However, the diverse range of naturally derived biopolymers and synthetic polymer families has not been compared systematically across the various BES platforms, based on quantitative performance metrics and lifetimes. Here, we comprehensively review polymer based electrodes and membranes for energy efficient and self-sustained wastewater treatment from material, electrolyte, reactor design and biochemistry-characterization, while benchmarking against carbon and metal based technologies. Conductive pfixing, PANI, PEDOT, GO derivatives), immobilized redox and ion exchange polymers (chitosan, polyamines, polystyrene, etc.), and bio polycarbonate/hybrid/bimetal oxides are evaluated as coatings for charge mediating, interfacial modulation, fixing of nanohybrid components and antifouling/antibacterial separations. They are compared as high surface area electrodes (foams, CNT nanofibers, hydrogels, carbon papers/fabrics), ultrathin films or ion permselective/porous membranes, across various BES configurations ranging from sediment/plant/floating MFCs to stacked MEC, MDC and solid state batteries. This provides rational selection criteria for polymers under representative environmental conditions, with focus on degradation in aggressive electrolyte/wastewater, dopant leaching, thermal stability, uniformity, self-repellence, electrode reactance and durability under battery cycling/pressure loads. We summarize key fundamental BES properties on consolidated performance plots vs. lifetime and identify design criteria and knowledge gaps for accelerating polymer based BES devices toward full scale, with emphasis on synergistically incorporated biopolymers, fiber/polycarbonate, ceramic and carbon hybrids. First review of conductive and biopolymer electrodes across BES platforms.

基于聚合物的电极和膜在大规模推进生物电化学系统（BES）产生的废水方面具有相当大的前景，因为它们结合了改进的电子转移和功率密度，具有高稳定性和良好的表面化学特性。然而，在不同的BES平台上，基于定量性能指标和寿命，还没有对各种天然衍生生物聚合物和合成聚合物家族进行系统的比较。在这里，我们从材料、电解质、反应器设计和生化表征等方面全面回顾了聚合物基电极和膜在节能和自我持续废水处理方面的应用，同时对碳基和金属基技术进行了基准测试。导电固定、聚苯胺、聚dot、氧化石墨烯衍生物)、固定化氧化还原和离子交换聚合物（壳聚糖、聚胺、聚苯乙烯等）以及生物聚碳酸酯/杂化/双金属氧化物作为电荷中介、界面调制、纳米杂化组分固定和防污/抗菌分离的涂层进行了评价。它们被比较为高表面积电极（泡沫、碳纳米管纳米纤维、水凝胶、碳纸/织物）、超薄膜或离子透选/多孔膜，跨越各种BES配置，从沉积物/植物/浮动mfc到堆叠MEC、MDC和固态电池。这为具有代表性的环境条件下的聚合物提供了合理的选择标准，重点是在腐蚀性电解质/废水中的降解，掺杂剂浸出，热稳定性，均匀性，自排斥性，电极电抗和电池循环/压力负载下的耐久性。我们总结了综合性能图与寿命的关键基本BES特性，并确定了加速聚合物基BES设备走向全尺寸的设计标准和知识差距，重点是协同结合生物聚合物、纤维/聚碳酸酯、陶瓷和碳杂化物。首次回顾了BES平台上的导电电极和生物聚合物电极。

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引用次数: 0

Manganese dioxide/single-walled carbon nanotube composite film as freestanding cathode with immobilized sulfur for lithium-sulfur batteries 二氧化锰/单壁碳纳米管复合膜作为固定硫锂硫电池的独立阴极

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2026.239341

Zibo Zhao , Chunlin Li , Hanchi Wang , Lei Sun , Xiaoshuai Yu , Guoyong Wang

Lithium sulfur (Li-S) batteries hold great promise for next generation energy storage, yet their practical deployment is hampered by sluggish reaction kinetics and the notorious polysulfide shuttle effect. The development of advanced catalytic hosts that can accelerate redox conversion and confine polysulfides is therefore crucial for achieving stable, high performance Li-S batteries. We report a freestanding cathode architecture based on a manganese dioxide/single walled carbon nanotube (MnO₂/SWCNT) composite film. This film is constructed via a facile vacuum filtration process, resulting in a porous, layered structure that seamlessly integrates continuous conductive pathways with abundant catalytic interfaces. The MnO₂ nanowires not only provide strong chemisorption sites for lithium polysulfides (LiPSs) but also accelerate their conversion kinetics. Coupled with the highly conductive and physically confining SWCNT network, the composite cathode delivers a high specific capacity of 922 mAh g⁻¹ at 2 C and maintains an capacity decay rate of 0.069 % per cycle over 500 cycles. Furthermore, the freestanding design obviates the need for conventional metal current collectors, conductive additives, and polymer binders, thereby boosting the overall energy density of the cell. This work leverages a synergistic combination of structural engineering and compositional design, offering an effective strategy to realize high performance Li-S batteries.

锂硫（Li-S）电池在下一代储能领域有着巨大的前景，但其实际部署受到反应动力学迟缓和臭名昭著的多硫穿梭效应的阻碍。因此，开发能够加速氧化还原转化和限制多硫化物的先进催化载体对于实现稳定、高性能的锂- s电池至关重要。我们报道了一种基于二氧化锰/单壁碳纳米管（MnO2/SWCNT）复合膜的独立阴极结构。这种薄膜是通过简单的真空过滤过程构建的，形成了一个多孔的分层结构，无缝地将连续的导电途径与丰富的催化界面结合在一起。二氧化锰纳米线不仅为多硫化锂（LiPSs）提供了强大的化学吸附位点，而且加速了它们的转化动力学。再加上高导电性和物理限制的swcnts网络，复合阴极在2℃下提供了922 mAh g - 1的高比容量，并且在500次循环中保持了0.069%的容量衰减率。此外，这种独立设计避免了传统金属集流器、导电添加剂和聚合物粘合剂的使用，从而提高了电池的整体能量密度。这项工作利用了结构工程和成分设计的协同结合，为实现高性能锂电池提供了有效的策略。

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引用次数: 0

Development and validation of a layer-unspecific physical model for voltage degradation to predict the remaining useful life of proton exchange membrane water electrolyzers 开发并验证了一种用于预测质子交换膜水电解槽剩余使用寿命的电压退化层非特异性物理模型

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2025.239122

Felix Dittmar , Thomas Lickert , Tom Smolinka , Karsten Pinkwart , Jens Tübke

The deployment of proton exchange membrane (PEM) water electrolysis plants is accelerating, creating a need for accurate lifetime prediction to support reliable and cost-effective operation. Yet, degradation models suitable for plant-level lifetime estimation remain scarce. To address this gap, this study introduces a layer-unspecific physical model to estimate voltage degradation and the remaining useful life of PEM water electrolysis stacks from current–voltage data. The model extracts quasi-steady polarization curves from operation without diagnostic downtime. As a central novelty, it fits a simplified electrochemical equation assuming a fixed Tafel slope, which enables stable tracking of the temporal evolution of resistance and exchange current density by avoiding parameter collinearity. Uncertainty is quantified through Monte Carlo propagation of regression parameters, enabling lifetime forecasts with confidence intervals. Validation is conducted with a 26 200 h synthetic dataset and a 2200 h experimental six-cell stack dataset. The synthetic data enable validation over industry-relevant lifetimes without multi-year testing, while the experimental data confirm practical applicability. Across both datasets, the model reproduced voltages with millivolt-scale error and provided prognostic horizons suitable for maintenance planning. Overall, the approach offers a practical and interpretable model for PEM water electrolysis efficiency prediction and accelerates model development while reducing reliance on extended lifetime experiments.

质子交换膜（PEM）水电解装置的部署正在加速，因此需要准确的寿命预测，以支持可靠且经济高效的操作。然而，适合于植物级寿命估计的退化模型仍然很少。为了解决这一差距，本研究引入了一种非特定层的物理模型，从电流-电压数据估计电压退化和PEM水电解堆栈的剩余使用寿命。该模型在没有诊断停机的情况下，从运行中提取准稳态极化曲线。作为核心的新颖之处，它符合假设固定Tafel斜率的简化电化学方程，通过避免参数共线性，可以稳定地跟踪电阻和交换电流密度的时间演变。通过回归参数的蒙特卡罗传播来量化不确定性，从而实现具有置信区间的寿命预测。利用26,200 h的合成数据集和2,200 h的六单元堆叠实验数据集进行验证。合成数据可以在行业相关的使用寿命内进行验证，而无需进行多年的测试，而实验数据则证实了实际适用性。在这两个数据集中，该模型再现了毫伏级误差的电压，并提供了适合维护计划的预测范围。总的来说，该方法为PEM水电解效率预测提供了一个实用且可解释的模型，并加速了模型的开发，同时减少了对延长寿命实验的依赖。

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引用次数: 0

High energy density quasi-solid-state lithium-ion batteries: dry electrode process and gel polymer electrolyte securing 4.5 V stable high-loading cathode technology 高能量密度准固态锂离子电池：干电极工艺和凝胶聚合物电解质确保4.5 V稳定高负载阴极技术

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2026.239332

Dafeng Wei , Zekai Chen , Junqiao Huang , Jinhan Li , Zhichuan Shen , Zefeng Lin , Reem Alsaigh , Nadyah Alanazi , Abdullah N. Alodhayb , Zhicong Shi

Using high-loading thick electrodes prepared by dry electrode process is an effective way for higher energy density Lithium-ion batteries(LIBs). The integration of gel polymer electrolytes (GPEs) with traditional slurry-cast thick electrodes remains fundamentally challenged by interfacial incompatibility, sluggish ion transport kinetics, mechanical stress accumulation, and parasitic side reactions from residual solvents, leading to performance decay. This study presents a novel strategy for constructing stable 4.5 V high-loading lithium-ion batteries through the synergistic integration of dry electrode and in-situ polymerized GPEs. The inherent solvent-free nature of the dry process avoids the parasitic side reactions associated with residual solvents. Consequently, the Dry electrode-LiNi_0.8Mn_0.1Co_0.1O₂ (DE-NCM811) fabricated via polytetrafluoroethylene (PTFE) fibrillation-calendering demonstrates seamless interfacial compatibility when coupled with a fluorinated grafted gel polymer electrolyte formed by in-situ free-radical polymerization. Galvanostatic intermittent titration technique (GITT) and electrochemical impedance spectroscopy (EIS) evaluations confirm superior Li⁺ diffusion kinetics and interfacial stability in the DE-NCM811|GPE|Li. Comparative electrochemical analysis reveals the superior performance of the DE-NCM811|GPE|Li, demonstrating 83.89 % capacity retention after 120 cycles in the voltage range of 3–4.5 V at 0.2 C, enhanced rate capability of 217.25 mAh g⁻¹ at 0.1 C, stable cycling performance at high loadings of 75 mg cm⁻² (80.18 % capacity retention) after 70 cycles.

采用干电极法制备高负荷厚电极是制备高能量密度锂离子电池的有效途径。凝胶聚合物电解质（GPEs）与传统浆料浇铸厚电极的集成仍然面临着界面不相容、离子传输动力学缓慢、机械应力积累和残留溶剂的寄生副反应等问题的挑战，这些问题导致性能下降。本研究提出了一种通过干电极和原位聚合gpe的协同集成来构建稳定的4.5 V高负载锂离子电池的新策略。干燥过程固有的无溶剂性质避免了与残留溶剂相关的寄生副反应。因此，通过聚四氟乙烯（PTFE）纤化压延制备的干电极- lini0.8 mn0.1 co0.1 o2 （DE-NCM811）与原位自由基聚合形成的氟化接枝凝胶聚合物电解质耦合时，表现出无缝的界面相容性。恒流间歇滴定技术（git）和电化学阻抗谱（EIS）评估证实了DE-NCM811|GPE|Li具有优异的Li+扩散动力学和界面稳定性。对比电化学分析表明，DE-NCM811|GPE|Li具有优异的性能，在0.2 C下，在3-4.5 V电压范围内，120次循环后的容量保持率为83.89%，在0.1 C下的倍率容量为217.25 mAh g−1，在75 mg cm−2的高负载下，70次循环后的循环性能稳定，容量保持率为80.18%。

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引用次数: 0

Unveiling hidden membrane transport phenomena in PEM electrolyzers: Modeling the impact of gas crossover and electro-osmotic water drag 揭示PEM电解槽中隐藏的膜传输现象：模拟气体交叉和电渗透水阻力的影响

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2026.239318

Ali Bayat , Prodip K. Das , Suvash C. Saha

Green hydrogen production via proton exchange membrane water electrolyzers (PEMWEs) is a key pathway for decarbonizing industrial energy systems; however, predictive modeling accuracy is strongly influenced by membrane-level transport phenomena. In particular, hydrogen and oxygen crossover through the polymer electrolyte and electro-osmotic water drag can reduce gas purity, lower Faradaic efficiency, and introduce safety-related constraints, yet these effects are commonly neglected in single-phase numerical frameworks. In this study, a validated three-dimensional single-phase PEMWE model is extended to explicitly incorporate solution–diffusion-based gas crossover and electro-osmotic drag within the governing transport equations. Simulations performed on a representative PEMWE geometry quantify the resulting impacts on polarization behavior, membrane hydration, effective proton conductivity, and outlet gas composition under standard operating conditions. The results show that cross-membrane transport introduces a measurable voltage penalty (up to O(10⁻²) V) and induces significant dilution of product gases, accompanied by redistribution of water content within the membrane–electrode assembly. These findings demonstrate that even under single-phase operation, membrane transport phenomena play a non-negligible role in shaping performance, efficiency, and gas purity. The presented framework provides a physically consistent basis for capturing these effects and offers a quantitative bridge between simplified single-phase models and more comprehensive multiphase PEMWE simulations, supporting improved design and safer operation of electrolyzer systems.

质子交换膜水电解槽绿色制氢是实现工业能源系统脱碳的重要途径；然而，预测模型的准确性受到膜水平输运现象的强烈影响。特别是，氢气和氧气通过聚合物电解质交叉以及电渗透水阻力会降低气体纯度，降低法拉第效率，并引入与安全相关的约束，但这些影响在单相数值框架中通常被忽略。在这项研究中，扩展了一个经过验证的三维单相PEMWE模型，明确地将基于溶液扩散的气体交叉和电渗透阻力纳入控制输运方程。在典型的PEMWE几何结构上进行的模拟量化了在标准操作条件下对极化行为、膜水合作用、有效质子电导率和出口气体成分的影响。结果表明，跨膜传输引入了可测量的电压惩罚（高达O(10−2)V），并诱导产物气体的显着稀释，伴随着膜电极组件内含水量的重新分配。这些发现表明，即使在单相操作下，膜输运现象在塑造性能、效率和气体纯度方面也起着不可忽视的作用。所提出的框架为捕获这些效应提供了物理上一致的基础，并在简化的单相模型和更全面的多相PEMWE模拟之间提供了定量桥梁，支持改进设计和更安全的电解槽系统运行。

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引用次数: 0

Bio-inspired NiCoP@NiCo sulfide core-shell heterostructure for high areal capacity and rate performance in alkaline zinc-based batteries 生物启发NiCoP@NiCo硫化物核壳异质结构用于碱性锌基电池的高面积容量和倍率性能

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2026.239336

Kai Zhou , Jingwen Wu , Shan Huang , Zhengdong Zhang , Ruyu Huang , Siting Chen , Beini Lin , Yu Bao , Chenggong Han , Li Niu

Developing cathode materials that synchronously offer high areal capacity and outstanding rate performance remains a pivotal challenge in the pursuit of high-energy, high-power, and durable aqueous alkaline Zn-based batteries. Here, a novel vertical hierarchical heterostructure nanoarray comprising nanosheets and nanowires was directly grown on nickel foam (NF). A bio-inspired NiCoP “Fly trap leaf” scaffold was synthesized, followed by the electrochemical growth of a NiCo sulfide shell to form a core-shell NiCoP@NiCo sulfide architecture (NF/NCP@NCS). This multiscale design enhances the electroactive site density, accelerates electron and ion transport, and improves mechanical stability during cycling. The resulting NF/NCP@NCS-based CoNi//Zn full cell demonstrated an outstanding performance of 2.3 mAh cm⁻² at 10 mA cm⁻² and maintained 1.25 mAh cm⁻² when the current density was escalated to 100 mA cm⁻², underscoring its excellent rate capability. The system also provides an impressive 4 mWh cm⁻² in energy density and boasts a maximum power output of 180 mW cm⁻². These results validate our facile nature-inspired 3D vertical hierarchical heterostructure as an encouraging electrode design strategy for aqueous Zn-based batteries, bridging the gap toward practical, scalable, and safe energy storage solutions.

在追求高能量、高功率和耐用的碱性锌基水电池的过程中，开发同时提供高面积容量和卓越倍率性能的正极材料仍然是一个关键挑战。在泡沫镍（NF）上直接生长了一种由纳米片和纳米线组成的新型垂直分层异质结构纳米阵列。合成了仿生NiCoP“捕蝇草叶”支架，随后电化学生长NiCo硫化物外壳，形成核-壳NiCoP@NiCo硫化物结构（NF/NCP@NCS）。这种多尺度设计增强了电活性位点密度，加速了电子和离子的传递，并提高了循环过程中的机械稳定性。所制备的NF/NCP@NCS-based CoNi//Zn全电池在10 mA cm - 2条件下具有2.3 mAh cm - 2的优异性能，当电流密度增加到100 mA cm - 2时，电池性能保持在1.25 mAh cm - 2。该系统还提供了令人印象深刻的4 mWh cm - 2的能量密度，并拥有180 mW cm - 2的最大功率输出。这些结果验证了我们简单的受自然启发的3D垂直分层异质结构作为水性锌基电池的令人鼓舞的电极设计策略，弥合了实用，可扩展和安全的能量存储解决方案的差距。

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引用次数: 0

Achieving superior supercapacitor performance through synergistic integration of reduced graphene oxide and antimony-doped tin oxide nanostructures 通过还原氧化石墨烯和掺锑氧化锡纳米结构的协同集成，实现卓越的超级电容器性能

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2026.239334

Umesh D. Babar , Onkar C. Pore , Bapuso M. Babar , Priyanka P. Chavan , Suhas H. Sutar , Sarfraj H. Mujawar , Ashok D. Chougale , Ebrahim Alhajri , Nilesh R. Chodankar , Pradip D. Kamble

Nanocomposites integrated with reduced graphene oxide (rGO) are highly attractive for energy storage due to their exceptional electrical conductivity, large surface area, and efficient charge transport pathways. This research presents the design of rGO-modified antimony-doped tin oxide (ATO) as a high-performance electrode material for supercapacitors (SCs). ATO offers excellent electrical conductivity and stability, while rGO enhances surface area and charge transport. The rGO/ATO composite, synthesized via a hydrothermal process followed by chemical reduction, exhibited a well-integrated nanostructure. Electrochemical measurements revealed a remarkable specific capacitance of 664 F/g at 3 mA/cm², alongside superior rate capability and long-term cycling stability (81 % retention after 10,000 cycles). The assembled hybrid pouch-type SCs, employing rGO/ATO and activated carbon electrodes, delivered 81 F/g with an energy density of 19 Wh/kg¹ and power density of 590 W/kg. Overall, the rGO/ATO hybrid demonstrates excellent stability and energy–power balance, underscoring its strong potential for next-generation sustainable energy storage devices.

与还原氧化石墨烯（rGO）集成的纳米复合材料由于其卓越的导电性、大表面积和高效的电荷传输途径而在能量存储方面具有很高的吸引力。本研究提出了rgo修饰的掺锑氧化锡（ATO）作为超级电容器（SCs）的高性能电极材料的设计。ATO具有优异的导电性和稳定性，而还原氧化石墨烯增强了表面积和电荷传输。通过水热法和化学还原法制备了rGO/ATO复合材料，具有良好的纳米结构。电化学测量显示，在3 mA/cm2下，比电容达到664 F/g，具有优异的倍率能力和长期循环稳定性（10,000次循环后保持81%）。采用还原氧化石墨烯/ATO和活性炭电极组装的混合袋式超导材料的能量密度为81 F/g，能量密度为19 Wh/kg1，功率密度为590 W/kg。总体而言，rGO/ATO混合材料表现出出色的稳定性和能量-功率平衡，强调了其作为下一代可持续能源存储设备的强大潜力。

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引用次数: 0

Spatially defined and ultra-thin Pt coatings via interface engineering for cost-effective proton exchange membrane water electrolysis 空间定义和超薄Pt涂层通过界面工程的成本效益的质子交换膜水电解

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2026.239359

Chang Liu , Chen Ju , Yixuan Ma , Congcong Yao , Xinzhou Zhang , Yang Liu , Ke Zhang , Xiaoke Li , Aidong Tan , Jianguo Liu

Pt coating is applied to Ti porous transport layers (PTL) in proton exchange membrane water electrolyzers (PEMWE) to suppress Ti passivation and interfacial losses. The lack of understanding of the relationship between interface and durability of the coatings has led to excessive Pt usage, significantly increasing component costs and hindering the large-scale deployment of PEMWE. The impact of ultra-thin coatings on the durability at high current density remains poorly understood. Here, we systematically investigated sputtered Pt coatings with thicknesses of 4, 8, 13, 25, and 50 nm on Ti felt PTLs to correlate coating structure, interfacial stability, and electrochemical performance during long-term operation. We demonstrate that Pt coating on the PTL is only required on the catalyst layer side, as the flow field interface shows negligible impact. The PTL with 4 nm Pt coating achieved comparable cell performance to thicker coatings but experienced faster degradation due to Pt delamination and subsequent catalyst layer detachment. The work function mismatch between ultra-thin Pt and TiO_x induces charge redistribution, weakening adhesion at the interface. This study establishes the interfacial electronic mechanism linking coating thickness and durability, providing design principles for electronic and interfacial engineering to overcome cost bottlenecks in large-scale PEM hydrogen production.

在质子交换膜水电解槽（PEMWE）的Ti多孔输运层（PTL）上涂覆Pt涂层以抑制Ti钝化和界面损失。由于缺乏对涂层界面和耐久性之间关系的理解，导致Pt的过度使用，大大增加了组件成本，阻碍了PEMWE的大规模部署。超薄涂层对高电流密度下耐久性的影响仍然知之甚少。在这里，我们系统地研究了厚度为4、8、13、25和50 nm的溅射Pt涂层在Ti毡ptl上的结构、界面稳定性和长期运行时的电化学性能。我们证明了Pt涂层在PTL上只需要在催化剂层一侧，因为流场界面的影响可以忽略不计。4纳米Pt涂层的PTL电池性能与较厚涂层相当，但由于Pt分层和随后的催化剂层脱离，PTL电池的降解速度更快。超薄Pt和TiOx之间的功函数不匹配导致电荷重新分布，削弱了界面上的附着力。本研究建立了连接涂层厚度和耐久性的界面电子机制，为电子和界面工程克服大规模PEM制氢的成本瓶颈提供了设计原则。

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引用次数: 0

High lithium-ion conductivity via tetrazolium-crosslinked gel polymer electrolyte for lithium secondary batteries 锂二次电池用四氮唑交联凝胶聚合物电解质的高锂离子电导率

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-17 DOI: 10.1016/j.jpowsour.2026.239331

Uddhav Kulkarni , Won-Jang Cho , Jeong Hoon Yoon , Kiran P. Shejale , Minsoo P. Kim , Jong-Seong Bae , Oc Hee Han , Gi-Ra Yi

Gel polymer electrolytes (GPEs) are effective candidates for developing long-lasting, high-energy-density lithium-ion batteries (LIBs). We present a crosslinked network polymer of poly(acrylonitrile-r-vinylidene diazide) with tethered tetrazolium rings (xPAN⁺) as highly stable and ion-selective GPEs for lithium-ion batteries. In concert with nitrile and azide groups from acrylonitrile and vinylidene blocks, these cationic rings play a crucial role in facilitating the movement of lithium-ions by interacting with both anions and solvent molecules, similar to single-ion conductors. This structure enables a remarkable lithium transference number (t_Li⁺ = 0.9) and lithium-ion conductivity of 1.67 mS/cm at 30 °C. As a result, xPAN⁺ GPEs performed stable cycling performance over 2000 h in lithium plating and stripping behavior and maintained discharge capacity retention of 92.15 % in LiFePO₄ paired half-cell (141.18 mAh/g at 0.5C over 230 cycles). This work demonstrates a straightforward approach for fabricating ionic polymer-based GPEs that promote superior ion transport and ensure stable electrochemical performance in LIBs.

凝胶聚合物电解质（gpe）是开发持久、高能量密度锂离子电池（lib）的有效候选者。我们提出了一种交联网络聚合物(聚（丙烯腈-对-偏二氮化乙烯）与系链四氮唑环（xPAN+）作为高度稳定和离子选择性的gpe用于锂离子电池。这些阳离子环通过与阴离子和溶剂分子相互作用，在促进锂离子运动方面起着至关重要的作用，与丙烯腈和偏乙烯块中的腈和叠氮化物基团协同作用，类似于单离子导体。这种结构使得锂离子转移数显著（tLi+ = 0.9）， 30°C时锂离子电导率为1.67 mS/cm。结果表明，xPAN+ GPEs在2000 h以上的镀锂和剥离行为中具有稳定的循环性能，并且在LiFePO4配对半电池（0.5C下141.18 mAh/g， 230次循环）中保持了92.15%的放电容量保持率。这项工作展示了一种直接的方法来制造基于离子聚合物的gpe，促进优越的离子传输，并确保在lib中稳定的电化学性能。

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引用次数: 0

Enhanced lithium metal battery performance with a novel poly(vinylidene fluoride-co-trifluoroethylene) P(VDF-TrFE)-based separator incorporating a garnet-type filler 采用石榴石型填料的新型聚偏氟乙烯-共三氟乙烯P（VDF-TrFE）基隔膜提高锂金属电池性能

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-01-16 DOI: 10.1016/j.jpowsour.2026.239335

J.P. Serra , J.L. Zhong , H. Salazar , A. Fidalgo-Marijuan , R. Gonçalves , G. Barandika , Q. Zhang , Y. Liu , L.J. Zhang , Carlos M. Costa , J.Q. Wang , S. Lanceros-Mendez

The instability of the electrolyte-electrode interphase remains a primary obstacle to realizing high-performance lithium metal batteries. To address this, we report a novel composite separator engineered via temperature-induced phase separation (TIPS), integrating Li_6.26Al_0.24La₃Zr₂O₁₂ (LALZO) garnet nanoparticles within a poly(vinylidene fluoride-co-trifluoroethylene) [P(VDF-TrFE)] matrix. The TIPS process enables uniform dispersion of sol-gel-synthesized LALZO particles (150–400 nm) and allows precise control over the separator's morphology, pore architecture, and porosity, without compromising the polymer's chemical or thermal stability. The garnet filler fundamentally enhances ion transport, with an optimal composite containing 4 wt% LALZO achieving a high ionic conductivity of 4.3 mS cm⁻¹ and an elevated lithium-ion transference number of 0.43. When evaluated in Li||LiNi_0.6Co_0.2Mn_0.2O₂ cells, this separator enables exceptional rate capability (discharge capacities of 185.8, 176.5, 165.2, and 129.8 mAh.g⁻¹ at C/5, C/2, 1 C, and 2 C, respectively) and cycling stability, retaining 88.3 % capacity after 80 cycles at 1 C. Post-cycling analysis reveals that the LALZO nanoparticles promote the formation of a robust, inorganic-rich solid-electrolyte interphase (SEI), which stabilizes the lithium anode interface and significantly reduces interfacial resistance. This work demonstrates that microstructure engineering via TIPS is a powerful strategy for developing multifunctional separators that simultaneously enhance bulk transport and interfacial stability in lithium metal batteries.

电解质-电极界面的不稳定性是实现高性能锂金属电池的主要障碍。为了解决这个问题，我们报道了一种通过温度诱导相分离（TIPS）设计的新型复合分离器，将Li6.26Al0.24La3Zr2O12 （LALZO）石榴石纳米颗粒集成在聚偏氟乙烯-共三氟乙烯[P(VDF-TrFE)]基体中。TIPS工艺可以使溶胶-凝胶合成的LALZO颗粒（150-400 nm）均匀分散，并可以精确控制分离器的形态、孔隙结构和孔隙度，而不会影响聚合物的化学或热稳定性。石榴石填料从根本上增强了离子传输，含有4 wt% LALZO的最佳复合材料获得了4.3 mS cm - 1的高离子电导率和0.43的锂离子转移数。当在Li||LiNi0.6Co0.2Mn0.2O2电池中进行评估时，该分离器具有出色的倍率能力（放电容量为185.8,176.5,165.2和129.8 mAh）。在C/5， C/2, 1 C和2 C下，LALZO纳米颗粒在1 C下循环80次后仍能保持88.3%的容量。循环后的分析表明，LALZO纳米颗粒促进了坚固的、富含无机的固体电解质界面相（SEI）的形成，从而稳定了锂阳极界面并显著降低了界面阻力。这项工作表明，通过TIPS进行微观结构工程是开发多功能分离器的有力策略，可以同时增强锂金属电池的散装运输和界面稳定性。

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