Journal of energy storage最新文献_第9页

Enhancing thermal conductivity and photothermal conversion of wood-based phase change materials through carbon-doped boron nitride incorporation 掺杂碳氮化硼提高木基相变材料的导热性和光热转化率

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-12 DOI: 10.1016/j.est.2026.121055

Chen Liu , Jing Li , Kaiwen Bai, Yitao Guo, Luze Liu, Li Yan, Shanshan Lv

Wood-based phase change material composites are widely utilized in building materials due to their sustainability and environmental benefits. However, their inherently low thermal conductivity limits their effectiveness in thermal energy storage and conversion. To overcome this limitation, this study proposes an innovative strategy by incorporating carbon-doped boron nitride (BCN) and polyethylene glycol (PEG2000) into delignified wood (DW) to fabricate a novel composite phase change material (BCN-DW/PEG). The BCN is synthesized using glucose and hexagonal boron nitride (h-BN). This strategy effectively improves thermal conductivity while preserving the material's excellent phase change energy storage capability. The thermal conductivity of BCN-DW/PEG reaches 0.371 W/(m·K), exhibiting a 106% increase compared to DW/PEG. Additionally, the composite retains a high latent heat storage capacity of 187.5 J/g due to the efficient integration of PEG2000. Furthermore, BCN-DW/PEG demonstrates remarkable solar-thermal conversion performance, reaching 85 °C within 250 s under 1-sun irradiation. This outstanding performance is attributed to the synergistic effect of BCN and PEG2000, which enhances both thermal conduction and solar-thermal conversion. Overall, this study provides a sustainable approach for solar-assisted thermal management in energy-efficient non-structural buildings.

木基相变材料复合材料因其可持续性和环境效益在建筑材料中得到广泛应用。然而，其固有的低导热性限制了其在热能储存和转换方面的有效性。为了克服这一限制，本研究提出了一种创新的策略，将碳掺杂氮化硼（BCN）和聚乙二醇（PEG2000）掺入去木质素木材（DW）中，制备一种新型复合相变材料（BCN-DW/PEG）。以葡萄糖和六方氮化硼（h-BN）为原料合成了BCN。这种策略有效地提高了导热性，同时保持了材料优异的相变储能能力。BCN-DW/PEG的导热系数达到0.371 W/(m·K)，比DW/PEG提高了106%。此外，由于PEG2000的高效集成，该复合材料保持了187.5 J/g的高潜热储存能力。此外，BCN-DW/PEG具有出色的光热转换性能，在1次太阳照射下250 s内达到85°C。这种优异的性能归功于BCN和PEG2000的协同效应，增强了热传导和太阳能热转换。总的来说，这项研究为节能非结构建筑的太阳能辅助热管理提供了一种可持续的方法。

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引用次数: 0

Dynamic analysis of a wave-driven liquid piston compressed air energy storage system 波浪驱动液活塞压缩空气储能系统的动力学分析

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-12 DOI: 10.1016/j.est.2026.120992

Shujian Ma , Xiaolin Wang , Michael Negnevitsky , Evan Franklin , Alexandre Pichard

This paper presents a dynamic analysis of a wave-driven liquid-piston compressed air energy storage (W-CAES) system. A comprehensive dynamic model is developed and validated with experimental data. Buoy motion is simulated via ANSYS-AQWA, while dynamic thermal behaviours are modelled using FORTRAN. Heat transfer between liquid and air during compression/expansion and its effect on system performance are evaluated. The effects of key parameters (e.g. liquid-piston cylinder shape parameter, pre-set pressure, pressure ratio, turbine flow rate, and wave conditions) are investigated. Results showed that heat transfer in the liquid-piston cylinder significantly improved the compression/expansion process, reducing the polytropic index from 1.4 (adiabatic) to ∼1.1 (nearly isothermal). Compression cylinder shape analysis revealed that small (flat) or large (narrow) height-to-diameter ratios enhanced heat transfer and efficiency compared to moderate shapes. Pre-set pressure had little effect on round-trip efficiency and capture factor, though it raised energy storage density reaching 1.1 MJ/m³ at 8 bar. The turbine flow rate had minimal impact on efficiency or capture factor. Case studies at five representative wave sites revealed that wave conditions strongly affected the capture factor, peaking at 30% near the East China Sea, and ranging 7–12% at other sites. These findings indicate this W-CAES design performs better in lower-wave-energy regions, but designs should be tailored to specific wave conditions.

本文对波浪驱动液活塞压缩空气储能系统进行了动力学分析。建立了综合动力学模型，并用实验数据进行了验证。浮标运动通过ANSYS-AQWA模拟，而动态热行为使用FORTRAN建模。评估了压缩/膨胀过程中液体和空气之间的热传递及其对系统性能的影响。研究了关键参数（如液柱塞缸形参数、预设压力、压力比、涡轮流量和波浪条件）的影响。结果表明，液体-活塞缸内的传热显著改善了压缩/膨胀过程，将多向性指数从1.4（绝热）降低到~ 1.1（近等温）。压缩圆柱体形状分析显示，与中等形状相比，小（平）或大（窄）的高度与直径比增强了传热和效率。预设压力对往返效率和捕集系数影响不大，但能提高储能密度，在8 bar时达到1.1 MJ/m3。涡轮流量对效率或捕集系数的影响最小。5个代表性波点的案例研究表明，波浪条件对捕获因子的影响较大，东海附近的捕获因子最高为30%，其他波点的捕获因子在7-12%之间。这些发现表明，W-CAES设计在低波能区域表现更好，但设计应针对特定的波浪条件进行定制。

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引用次数: 0

Advances in sustainable plant-based nanomaterials for supercapacitors 可持续植物基超级电容器纳米材料的研究进展

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-14 DOI: 10.1016/j.est.2026.120993

G. Mahendran , Mathiyazhagan Narayanan , Arivalagan Pugazhendhi

A recent progress on sustainable nanomaterials (SNMs) based research for supercapacitor (SC) application is gaining interest among researchers with main focus of energy storage. Although standard electrodes materials are effective and also cause environmental health issues, due to their harmful effects and non-biodegradable nature. Thus, finding a sustainable and bio-based nanomaterials (NMs) for SC and other energy storage purposes related researches are well recognized as viable substitute for typical SC. The plant-based NMs shows a substantial ability owing to their adjustable physicochemical natures, biocompatibility, and minimal impact. The sustainable methods like solvent-free carbonization, microwave-assisted pyrolysis, and the applications of bio-templates for nanostructure production. Plant based NMs synthesis can ensure the synthesis of nanostructured electrode substances demonstrating superior morphological and electrochemical natures. Phytochemicals like alkaloids, flavonoids, saponins, terpenoids, tannins, polyphenols, and so acts as fine reducing and stabilizing agents, determining the NMs morphology, crystalline nature, and surface traits are essential factors that influence the energy storage and transport process in SC. Knowing the structural and chemical nature of phytochemical is significant for enhancing their electrochemical activity. This review examine recent progress in plant-derived NMs for SC electrodes, highlighting their composition, structural nature, and energy storage potentials. Furthermore, this review analyses the role of green synthesized NMs (Ag, Au, and Fe) and composite materials in elevating energy storage ability, and significant synthesis processes that modify their electrochemical natures. Besides, this review also outlines the challenges of amalgamating plant-based NMs into scalable SC methods and offer insights into future progress of superior, and sustainable electrode substrates.

基于可持续纳米材料的超级电容器应用研究的最新进展引起了研究人员的兴趣，主要集中在储能方面。虽然标准电极材料是有效的，但由于其有害影响和不可生物降解的性质，也会引起环境健康问题。因此，寻找一种可持续的生物基纳米材料（NMs）用于SC和其他储能目的的相关研究被公认为是典型SC的可行替代品。植物基纳米材料因其可调节的物理化学性质、生物相容性和最小的影响而显示出可观的能力。无溶剂碳化、微波辅助热解、生物模板在纳米结构生产中的应用等可持续方法。基于植物的纳米电极合成可以确保合成具有优异形态和电化学性质的纳米结构电极物质。生物碱、黄酮类、皂苷、萜类、单宁、多酚等植物化学物质作为精细的还原剂和稳定剂，决定了NMs的形态、结晶性质和表面特性是影响其能量储存和转运过程的重要因素，了解植物化学物质的结构和化学性质对提高其电化学活性具有重要意义。本文综述了用于SC电极的植物源NMs的最新进展，重点介绍了它们的组成、结构性质和储能潜力。此外，本文还分析了绿色合成的纳米材料（Ag、Au和Fe）及其复合材料在提高储能能力方面的作用，以及改变其电化学性质的重要合成工艺。此外，本文还概述了将基于植物的纳米材料与可扩展的SC方法相结合的挑战，并为未来发展提供了更好的、可持续的电极衬底。

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引用次数: 0

High temperature metal oxide thermochemical energy storage materials: Thermodynamic and kinetic investigations 高温金属氧化物热化学储能材料：热力学和动力学研究

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-13 DOI: 10.1016/j.est.2026.120830

Xiaoqiang Zhang , Chaomurilige , Xingchao Han , Zongkun Chen , Hongkun Ma , Mingxi Ji , Dongyu Meng , Jiakang Yao , Guangyao Zhao , Geng Qiao , Tongtong Zhang , Yulong Ding

Cobalt (Co-) and copper (Cu-) based metal oxides are promising materials for high-temperature thermochemical energy storage (HT-TCES) due to their rapid redox kinetics, low thermal hysteresis, substantial energy density, and unlimited storage duration. However, their commercial application is hindered by challenges involving multi-physics and cross-scale coupling phenomenon. A comprehensive investigation is essential for material optimization and scale up. Therefore, this study experimentally explores Co- and Cu-based metal oxides mixed with Al₂O₃ and MgO respectively through comprehensive micro/macro-structure, thermodynamic and kinetics characterization. The results reveal that Co₃O₄/CoO with 10 wt% Al₂O₃ (CoAl10) shows redox-enthalpy of 378 J g^-1 and 359 J g^-1 after 150 cycles, corresponding to reductions of 1.6 % and 8.8 %. While for CuO/Cu₂O with 15 wt% MgO (CuMg15), maintains redox-reaction enthalpy of 448 J g^-1 and 446 J g^-1 with reductions of 24 % and 21 %. During cycling, spinel CoAl₂O₄ and spinel-like Cu₂MgO₃ structures formed enhance oxygen vacancy formation and mechanical strength. Notably, CoAl10 can withstand maximum compressive stress of 8 MPa for after 60 cycles. Kinetic models for CoAl10 and CuMg15 were developed using experimental data, providing insights to improve thermochemical energy storage models and advance material development for HT-TCES applications. This work aims to elucidate the multi-scale mechanisms governing performance and durability, paving the way for optimized Co- and Cu-based metal oxides in high-temperature energy storage systems.

钴（Co-）和铜（Cu-）基金属氧化物具有氧化还原动力学快、热滞后小、能量密度大、储存时间长等优点，是高温热化学储能（HT-TCES）的重要材料。然而，它们的商业应用受到多物理场和跨尺度耦合现象等挑战的阻碍。全面的调查对材料优化和扩大规模至关重要。因此，本研究通过综合微观/宏观结构、热力学和动力学表征，对Co基和cu基金属氧化物分别与Al2O3和MgO混合进行了实验研究。结果表明，当Al2O3 （CoAl10）质量分数为10 wt%时，循环150次后，Co3O4/CoO的氧化还原焓分别为378 J g-1和359 J g-1，还原率分别为1.6%和8.8%。当MgO浓度为15wt %时，CuO/Cu2O的氧化还原焓分别为448jg -1和446jg -1，还原焓分别为24%和21%。在循环过程中，尖晶石CoAl2O4和类尖晶石Cu2MgO3结构的形成促进了氧空位的形成和机械强度的提高。值得注意的是，经过60次循环后，CoAl10可以承受8 MPa的最大压应力。利用实验数据建立了CoAl10和CuMg15的动力学模型，为改进热化学储能模型和推进HT-TCES应用的材料开发提供了见解。这项工作旨在阐明控制性能和耐久性的多尺度机制，为优化高温储能系统中的Co和cu基金属氧化物铺平道路。

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引用次数: 0

Multifunctional binder engineering approach toward mechanically adaptive and self-healing poly(benzoxazole aniline)-based flexible supercapacitors 机械自适应和自修复聚苯并恶唑苯胺基柔性超级电容器的多功能粘结剂工程方法

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.est.2026.120686

Sajida Khan , Tayyaba Bashir , Gul Hassan , Shah Fahad , Ahmad Shuja , Habib Ahmad

The growing demand for wearable and soft electronic systems requires energy storage devices that can deliver electrochemical efficiency while enduring mechanical stress and structural damage. Conducting polymers offers a pathway to such systems, yet their performance is often undermined by poor cycling stability and inadequate electrode cohesion. In this work, poly(benzoxazole aniline) (pBOA), a derivative of polyaniline with enhanced flexibility and stability, was employed as the active material in flexible supercapacitor electrodes. The role of binders was systematically evaluated by comparing conventional insulating types (PVDF, PVP, CMC) with the conductive polymer PEDOT:PSS. Comprehensive electrochemical and self-healing assessments revealed that PEDOT:PSS serves as an active conductive matrix rather than a passive binder. Upon healing, the PEDOT:PSS-based electrode recovered to a series resistance (Rs) of 25.4 Ω, corresponding to ∼35.0%, ∼32.5%, and ∼53.7% lower post-healing Rs compared with PVDF-, CMC-, and PVP-based electrodes, respectively, and remaining ∼6.6% lower than the binder-free device. This superior charge transport translated into an aerial capacitance of 146.3 mF cm⁻², 86% capacity retention after 1000 cycles, and ∼95% post-healing capacitance recovery. These findings reposition the binder from a passive additive to a decisive factor in dictating multifunctional device behavior, highlighting PEDOT:PSS as a dual-role binder–conductor for robust and adaptable energy storage platforms.

对可穿戴和软电子系统日益增长的需求要求储能设备能够在承受机械应力和结构损伤的同时提供电化学效率。导电聚合物为这种系统提供了一条途径，但它们的性能往往受到循环稳定性差和电极凝聚力不足的影响。本研究将聚苯胺的衍生物聚苯并恶唑苯胺（pBOA）作为柔性超级电容器电极的活性材料。通过对传统绝缘材料（PVDF、PVP、CMC）与导电聚合物PEDOT:PSS的对比，系统评价了粘结剂的作用。综合电化学和自修复评估表明，PEDOT:PSS是一种主动导电基质，而不是被动粘合剂。愈合后，基于PEDOT: pss的电极恢复到25.4 Ω的串联电阻（Rs），与基于PVDF、CMC和vpp的电极相比，愈合后的Rs分别降低了~ 35.0%、~ 32.5%和~ 53.7%，比无粘结剂的装置低了~ 6.6%。这种优越的电荷传输转化为146.3 mF cm−2的空中电容，1000次循环后容量保持率为86%，修复后电容恢复率为~ 95%。这些发现将粘结剂从被动添加剂重新定位为决定多功能器件行为的决定性因素，突出了PEDOT:PSS作为强大且适应性强的储能平台的双作用粘结剂-导体。

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引用次数: 0

Approaching lithium-ion-level performance in sodium-ion batteries through rational reaction-zone design 通过合理的反应区设计接近钠离子电池的锂离子级性能

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.est.2026.120776

Sara Barati , Luís G. Dias , Juarez L.F. Da Silva

Limitations in ion transport in sodium-ion batteries (SIBs) impose severe constraints on the reachable capacity and voltage stability at technologically relevant C-rates, thereby limiting their competitiveness compared to lithium-ion batteries (LIBs). In this work, we employ a two-stage methodological framework that combines the pseudo-two-dimensional Doyle–Fuller–Newman model with a one-factor-at-a-time sensitivity analysis. This framework is subsequently integrated with constrained multi-objective optimization to systematically assess and contrast the design requirements of SIBs and LIBs. Our results obtained from the sensitivity analysis indicate that although the electrolyte diffusion coefficient and cation transference number remain fundamental constraints in SIBs, the electrode architecture, particularly the particle size, electrode thickness, porosity, and active material volume fraction, emerges as the principal determinant of discharge capacity and reaction-zone stability at moderate-to-high C-rates. In SIBs, large particle sizes and thick electrodes exacerbate solid-state diffusion limitations and electrolyte concentration polarization, resulting in a pronounced contraction of the reaction zone at discharge rates exceeding 1 C. By contrast, LIBs exhibit a higher tolerance to electrolyte transport limitations but are nonetheless strongly governed by electrode architectural parameters, especially the cathode particle size, porosity, and active material fraction. Based on these insights, parameter optimization improved the capacity of SIBs by up to 70 %, achieving a specific energy of 244.5 W h kg^-1 at 0.5 C, thus approaching the performance of commercial LIBs. Crucially, the optimized SIB configurations sustained a stable and spatially homogeneous reaction zone across a broad range of C-rates, a feature that is expected to mitigate degradation phenomena and capacity fade. The alignment of these results with industrial reports further emphasizes the practical relevance and applicability of the proposed framework.

钠离子电池（sib）中离子传输的局限性严重限制了其在技术相关c -速率下的可达容量和电压稳定性，从而限制了其与锂离子电池（lib）相比的竞争力。在这项工作中，我们采用了一个两阶段的方法框架，将伪二维Doyle-Fuller-Newman模型与单因素一次敏感性分析相结合。该框架随后与约束多目标优化相结合，系统地评估和对比sib和lib的设计需求。我们从灵敏度分析中得到的结果表明，尽管电解质扩散系数和阳离子转移数仍然是sib的基本限制因素，但电极结构，特别是粒径、电极厚度、孔隙率和活性物质体积分数，在中高c速率下成为放电容量和反应区稳定性的主要决定因素。在sib中，大颗粒尺寸和厚电极加剧了固态扩散限制和电解质浓度极化，导致放电速率超过1 c时反应区明显收缩。相比之下，lib对电解质传输限制表现出更高的耐受性，但仍然受到电极结构参数的强烈控制，尤其是阴极颗粒尺寸、孔隙率和活性物质分数。基于这些发现，参数优化将sib的容量提高了70%，在0.5℃下实现了244.5 W h kg-1的比能，从而接近商用lib的性能。最重要的是，优化后的SIB结构在广泛的c -速率范围内保持了稳定和空间均匀的反应区，这一特征有望减轻降解现象和容量衰减。这些结果与工业报告的一致性进一步强调了拟议框架的实际相关性和适用性。

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引用次数: 0

Numerical study of multi-nozzle inlet structure optimization for immersion cooling systems of large-scale lithium-ion battery pack 大型锂离子电池组浸没冷却系统多喷嘴进口结构优化数值研究

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.est.2026.120872

Wenhao Shan , Qun He , Ziyang Cao , Zhichao Zhang , Zuoqiang Dai , Lili Zheng , Xichao Li

Liquid immersion cooling for lithium-ion battery has attracted extensive interest due to superior cooling performance. This study proposes multiple-nozzle inlet configurations for immersion cooling system of the large-scale lithium-ion battery pack (90S1P). It is revealed that the multiple-nozzles force the fluid to flow through the gaps between battery cells, contributing to significantly enhanced heat transfer between coolant and battery cells. Wherein, the multi-nozzle inlet on the front of battery pack (CIF) exhibits better comprehensive performance than those on the side (CIS). In the CIF configuration, nozzle-to-battery distance, nozzle diameter and battery row gap significantly influence the temperature rise, temperature difference and pressure drop of system. The corresponding optimal values are determined to be 1 mm, 20 mm, and 10 mm, respectively. In the optimal configuration, the flow rate of 2 L/min and 5 L/min are adopted for discharging at 1C and 3C, respectively, to balance the power consumption, maximum temperature and temperature difference. When the battery pack is discharged at 3C, the temperature rise and temperature difference are only 14.98 °C and 4.96 °C, respectively. The results highlight great potential application of liquid immersion cooling in the field of large-scale energy storage system.

锂离子电池的液体浸没冷却由于其优越的冷却性能而引起了广泛的关注。本研究提出了大型锂离子电池组（90S1P）浸没冷却系统的多喷嘴进口配置。研究表明，多喷嘴迫使流体流过电池单元之间的间隙，从而显著增强了冷却剂与电池单元之间的传热。其中，电池组正面（CIF）的多喷嘴进口综合性能优于侧面（CIS）的多喷嘴进口。在CIF配置下，喷嘴到电池的距离、喷嘴直径和电池排间隙对系统的温升、温差和压降影响显著。确定其最优值分别为1mm、20mm和10mm。在最优配置中，1C和3C放电分别采用2l /min和5l /min的流量，以平衡功耗、最高温度和温差。当电池包在3C放电时，温升仅为14.98℃，温差仅为4.96℃。研究结果表明，液体浸没冷却技术在大型储能系统领域具有巨大的应用潜力。

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引用次数: 0

Coupled intercalation–defect engineering modulates ion transport dynamics in V2O5 cathode for aqueous zinc-ion batteries 耦合插层缺陷工程调节水锌离子电池V2O5阴极离子输运动力学

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.est.2026.120900

Shangqi Sun, Jian Zong, Qinyang Xue, Shiyu Hua, Zhi Li, Jiahui Cai, Liguang Qin, Chang Guo

Developing cathode materials with high capacity and long lifespan remains the central challenge for the practical application of aqueous zinc-ion batteries. In this work, a hydrothermal method combined with low-temperature H₂/Ar plasma treatment was employed to successfully introduce oxygen vacancies (OVs) into pre-intercalated zinc vanadium oxide hydrates (Zn₀.₁₂₅V₂O₅·0.95H₂O). This approach achieves a synergistic enhancement of structural stability, electronic conductivity, and electrochemical performance. Kinetic analysis together with theoretical calculations reveals that the plasma-induced OVs and enlarged interlayer spacing cooperatively reduce the Zn²⁺ diffusion barrier and improve electronic transport. Consequently, the charge storage mechanism transitions from a diffusion-controlled process to a pseudocapacitive-dominated behavior, significantly accelerating reaction kinetics and improving structural reversibility. The optimized electrode delivers a high reversible capacity of approximately 445.6 mAh g⁻¹, excellent rate performance of around 230.4 mAh g⁻¹ at 5 A g⁻¹, and ultralong cycling stability exceeding 2000 cycles. This study demonstrates that plasma-power-mediated intercalation and defect engineering provide a simple yet scalable strategy for constructing high-performance vanadium-based cathodes, offering a universal blueprint for the design of next-generation aqueous zinc-ion battery systems.

开发高容量、长寿命的正极材料仍然是水锌离子电池实际应用的核心挑战。在这项工作中，采用水热法结合低温H₂/Ar等离子体处理，成功地将氧空位（OVs）引入预插层锌钒氧化物水合物（Zn 0.₁₂₅V₂O₅·0.95H₂O）。这种方法实现了结构稳定性、电子导电性和电化学性能的协同增强。动力学分析和理论计算表明，等离子体诱导的OVs和层间距的增大共同降低了Zn2+的扩散势垒，提高了电子输运。因此，电荷存储机制从扩散控制过程转变为伪电容主导行为，显著加快反应动力学并提高结构可逆性。优化后的电极提供了约445.6 mAh g - 1的高可逆容量，在5 a g - 1时的优异倍率性能约为230.4 mAh g - 1，超长循环稳定性超过2000次循环。该研究表明，等离子体功率介导的嵌入和缺陷工程为构建高性能钒基阴极提供了一种简单而可扩展的策略，为下一代水性锌离子电池系统的设计提供了通用蓝图。

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引用次数: 0

Hybrid energy storage systems with innovative artificial neural network-based controller for strengthening power system resilience 基于创新人工神经网络控制器的混合储能系统增强电力系统弹性

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.est.2026.120824

Rakesh Kumar Singh , Ravi Shankar , Vimlesh Verma

To mitigate power fluctuations and system inertia loss caused by renewable energy penetration, energy storage systems (ESSs) have become a vital component of modern power grids. This study evaluates the performance of various ESS technologies, including battery ES (BES), flywheel ES (FES), capacitive ES (CES), superconducting magnetic ES (SMES), ultra-capacitors (UC), and redox flow batteries (RFB). The cost-effectiveness of various battery combinations is also analyzed, tested, and compared. The analysis is conducted on a two-area test system within a deregulated environment, incorporating diverse transaction models such as bilateral and pool-based Transactions (BBT and PBT). Each area hosts two GENCOs and two DISCOs: Area 1 integrates thermal-hydro generation alongside distributed wind generation, while Area 2 features a nuclear-gas power plant with distributed photovoltaic generation. For secondary frequency control, a novel parallel combination of PDN and PI^λDN controllers (PDN + PI^λDN) utilizing artificial neural networks (ANNs) is introduced. The OVPL (Opposition-based Volleyball Premier League) algorithm—an enhanced version of the VPL algorithm incorporating opposition-based learning—optimizes controller gains and system parameters. In the BBT scenario, battery technologies are assessed, and hybrid configurations are developed. Taking into account contract breach scenarios, the best battery arrangement is chosen to meet increased demand when wind and photovoltaic (PV) generation are combined. Lastly, simulation analysis using the OPAL-RT platform and the proposed approach for larger, more intricate grid networks (IEEE-118 bus systems) confirms the practical viability of the suggested methodology.

为了缓解可再生能源渗透带来的电力波动和系统惯性损失，储能系统已成为现代电网的重要组成部分。本研究评估了各种ESS技术的性能，包括电池ES （BES）、飞轮ES （FES）、电容ES （CES）、超导磁性ES （sme）、超级电容器（UC）和氧化还原液流电池（RFB）。各种电池组合的成本效益也进行了分析、测试和比较。分析是在一个放松管制的环境中对两个区域的测试系统进行的，该系统结合了多种交易模型，如双边和基于池的交易（BBT和PBT）。每个区域拥有两个genco和两个DISCOs: 1区集成了热电发电和分布式风力发电，而2区则以核天然气发电厂和分布式光伏发电为特色。针对二次频率控制，提出了一种基于人工神经网络的PDN和pi - λ dn并联组合控制器（PDN + pi - λ dn）。OVPL（基于对手的排球超级联赛）算法是VPL算法的增强版本，结合了基于对手的学习，可以优化控制器增益和系统参数。在BBT方案中，对电池技术进行了评估，并开发了混合配置。考虑到合同违约的情况，选择最佳的电池安排，以满足风能和光伏发电（PV）相结合时增加的需求。最后，使用OPAL-RT平台和针对更大、更复杂的网格网络（IEEE-118总线系统）提出的方法进行仿真分析，证实了所建议方法的实际可行性。

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引用次数: 0

Rational construction of zeolitic imidazolate framework-derived Co3S4@Ti3C2Tx@NiV-LDH/NF electrodes via core–shell design for efficient supercapacitors 通过核壳设计合理构建高效超级电容器用沸石咪唑酸框架衍生Co3S4@Ti3C2Tx@NiV-LDH/NF电极

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage

Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.est.2026.120828

Kexin Li , Xiang Luo , Gentian Yue , Yueyue Gao , Jinghao Huo , Chen Dong , Furui Tan

To fully exploit the large specific surface area, well-defined porous structure, and outstanding advantages in rate capability and cycling stability of metal-organic frameworks, while overcoming their poor electrical conductivity, we synthesized a layered double hydroxide (LDH)-based composite incorporating metal sulfides and Ti₃C₂T_x MXene. This was realized using a zeolitic imidazolate framework (ZIF-67) as a sacrificial template. The as-prepared ZIF-67 and Ti₃C₂T_x MXene were first anchored onto nickel foam (NF) and subsequently converted into a Co₃S₄@Ti₃C₂T_x/NF heterostructure via a sulfidation process. A Co₃S₄/Ti₃C₂T_x/NiV-LDH composite was then fabricated through a hydrothermal method and employed as a cathode for supercapacitors. Electrochemical characterization revealed that, at a scan rate of 20 mV·s⁻¹, the Co₃S₄@Ti₃C₂T_x@NiV-LDH composite delivered a higher specific capacitance, improved conductivity, and superior cycling stability compared to the pristine ZIF-67/NF, ZIF-67@Ti₃C₂T_x/NF, and Co₃S₄@Ti₃C₂T_x/NF electrodes. Furthermore, an asymmetric supercapacitor assembled with Co₃S₄@Ti₃C₂T_x@NiV-LDH/NF as the positive electrode and activated carbon as the negative electrode achieved a high energy density of 43.56 Wh·kg⁻¹ at a power density of 800 W·kg⁻¹, successfully powering an LED light for 5 min.

为了充分利用金属-有机骨架的比表面积大、多孔结构清晰、速率能力和循环稳定性突出的优点，同时克服其导电性差的缺点，我们合成了一种含金属硫化物和Ti3C2Tx MXene的层状双氢氧化物（LDH）基复合材料。这是通过使用沸石咪唑盐框架（ZIF-67）作为牺牲模板来实现的。制备的ZIF-67和Ti3C2Tx MXene首先被锚定在泡沫镍（NF）上，随后通过硫化过程转化为Co3S4@Ti3C2Tx/NF异质结构。采用水热法制备了Co3S4/Ti3C2Tx/NiV-LDH复合材料，并将其用作超级电容器的阴极材料。电化学表征表明，与ZIF-67/NF、ZIF-67@Ti3C2Tx/NF和Co3S4@Ti3C2Tx/NF电极相比，在20 mV·s−1的扫描速率下，Co3S4@Ti3C2Tx@NiV-LDH复合材料具有更高的比电容、更好的电导率和更好的循环稳定性。此外，以Co3S4@Ti3C2Tx@NiV-LDH/NF为正极，活性炭为负极组装的非对称超级电容器在800 W·kg - 1的功率密度下获得了43.56 Wh·kg - 1的高能量密度，成功地为LED灯供电5 min。

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引用次数: 0