Journal of Power Sources最新文献_第9页

Numerical study of thermal characteristics in a Li||Bi liquid metal battery subject to internal short circuit Li b|bi液态金属电池内部短路时热特性的数值研究

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-08 DOI: 10.1016/j.jpowsour.2025.238555

Yi Zhang , Weixin Zhang , Xianbo Zhou , Cheng Xu , Lei Fan , Haomiao Li , Kangli Wang , Min Zhou , Kai Jiang

{"title":"Numerical study of thermal characteristics in a Li||Bi liquid metal battery subject to internal short circuit","authors":"Yi Zhang , Weixin Zhang , Xianbo Zhou , Cheng Xu , Lei Fan , Haomiao Li , Kangli Wang , Min Zhou , Kai Jiang","doi":"10.1016/j.jpowsour.2025.238555","DOIUrl":"10.1016/j.jpowsour.2025.238555","url":null,"abstract":"<div><div>Liquid metal batteries (LMB) are emerging as a promising solution for grid-scale energy storage due to their high capacity and cost-effectiveness. Given the intricate nature of energy transfer during the internal short circuit (ISC) process in LMB, a multi-physics model is introduced in this paper to investigate the heat generation power and temperature distribution during ISC in 40 Ah Li||Bi LMB. The influence of the critical factors—state of charge (SOC), short location and short area size—on ISC is analyzed through a parametric sweep approach. Results reveal that the heat generation during ISC in LMB primarily stems from the alloying chemical reaction between the metallic electrodes (e.g., lithium and bismuth forming Li<sub>3</sub>Bi). The heat generation rate is predominantly influenced by SOC and the short-circuit area size, as these factors govern the reaction kinetics. Additionally, the heat transfer pathway is largely determined by the short-circuit location. During the ISC process, the most severe temperature rise occurs with a peak heat generation rate of 675 W and a peak temperature of 888 °C after 168 s. Furthermore, a temperature rise rate of 1 <sup>o</sup>C/s for the anode is proposed as a reliable boundary for the early warning of ISC in LMB.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238555"},"PeriodicalIF":7.9,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263750","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

A high-performance PVA proton exchange membranes based on dendritic silica nanoparticles loaded with ionic liquids for direct methanol fuel cells 基于负载离子液体的枝状二氧化硅纳米粒子的高性能PVA质子交换膜用于直接甲醇燃料电池

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-08 DOI: 10.1016/j.jpowsour.2025.238581

Zhifei Wu, Zhiwei Wang, Jiaxin Pan, Zhongli Zhang, Jinyao Chen, Ya Cao

{"title":"A high-performance PVA proton exchange membranes based on dendritic silica nanoparticles loaded with ionic liquids for direct methanol fuel cells","authors":"Zhifei Wu, Zhiwei Wang, Jiaxin Pan, Zhongli Zhang, Jinyao Chen, Ya Cao","doi":"10.1016/j.jpowsour.2025.238581","DOIUrl":"10.1016/j.jpowsour.2025.238581","url":null,"abstract":"<div><div>A novel proton exchange membrane (PEM) has been developed using dendritic mesoporous silica nanoparticles (DMSNs) which are synthesized via a process of self-assembly. Proton ionic liquids (PILs) are loaded into DMSNs' 3D radial pore channels through vacuum impregnation, and IL@DMSN composites with varying weight ratios (1.5–7.5 wt%) are incorporated into crosslinked polyvinyl alcohol (PVA) matrices to form cPVA/IL@DMSN-X nanocomposite films. The design effectively mitigates PIL leaching while leveraging DMSNs' unique structural advantages, namely hierarchical porosity, uniform 57 nm particle size, and high surface area. The optimal formulation (cPVA/IL@DMSN-6) demonstrates exceptional performance, with a reduction in methanol permeability to 4.8 × 10<sup>−7</sup> cm<sup>2</sup> s<sup>−1</sup>, and an increase in proton conductivity to 75.4 mS cm<sup>−1</sup>. It is noteworthy that at relative humidity levels of less than 20 %, the membrane demonstrates a proton conductivity of 25 mS cm<sup>−1</sup> and exhibits remarkable thermal stability, with a maximum temperature of 200 °C. A single direct methanol fuel cell (DMFC) based on the prepared membrane exhibits a peak power density of 59.7 mW cm<sup>−2</sup> in pure H<sub>2</sub> operation, and remarkable methanol tolerance with 38.8 mW cm<sup>−2</sup> retained at 10 M methanol feed out. The DMSN incorporation results in a simultaneous enhancement of proton conduction, dimensional stability, and methanol barrier properties, thereby demonstrating significant potential as an alternative PEM for durable DMFC applications.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238581"},"PeriodicalIF":7.9,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263678","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

Assessment of the impact of cathode protection layers on the performance of NMC/Li batteries in electrolytes containing FEC and LiBOB 阴极保护层对含FEC和LiBOB电解质中NMC/Li电池性能影响的评估

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238547

Inbar Anconina , Thomas Leirikh , Pini Shekhter , Rupesh Kumar Tiwari , David Zitoun , Diana Golodnitsky

{"title":"Assessment of the impact of cathode protection layers on the performance of NMC/Li batteries in electrolytes containing FEC and LiBOB","authors":"Inbar Anconina , Thomas Leirikh , Pini Shekhter , Rupesh Kumar Tiwari , David Zitoun , Diana Golodnitsky","doi":"10.1016/j.jpowsour.2025.238547","DOIUrl":"10.1016/j.jpowsour.2025.238547","url":null,"abstract":"<div><div>Achieving stable cycling of high-voltage lithium-ion batteries (LIBs) requires co-design of electrolyte composition and electrode interphases. Here we investigate the combined effects of electrolyte composition and artificial cathode coatings on NMC622 cathodes. Initially, we present an in-depth examination of the commercial electrolyte designed to form LiF/BOB-rich interphases. The electrolyte is based on a quaternary carbonate solvent - dimethyl carbonate/ethyl methyl carbonate/fluoroethylene carbonate/propylene carbonate (DMC/EMC/FEC/PC, 3:3:3:1, v/v), and contains 0.95 M lithium hexafluorophosphate (LiPF<sub>6</sub>) and 0.05M lithium bis(oxalato)borate (LiBOB). This system is compared against a standard binary EC:EMC electrolyte containing 1 M LiPF<sub>6</sub>. The coatings are applied via electrophoretic deposition (EPD). The study evaluates whether cathode protective coatings in the quaternary electrolyte further improve long-term cycleability, beyond the enhancement provided by the standard electrolyte. Molecular dynamics (MD) simulations reveal distinct Li-ion solvation structures in the formulated electrolytes, demonstrating the formation of LiF/BOB-rich interphases. Electrochemical testing shows that electrolyte composition plays a dominant role in determining cycling performance and interfacial resistance, while artificial coatings provide additional stability. The optimized combination achieves over 80 % capacity retention after 300 cycles at 2.8–4.5V voltage cut-offs. These results highlight the importance of integrating solvation chemistry and surface engineering to stabilize electrode-electrolyte interfaces in advanced LIBs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238547"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263701","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

Prospective view of battery degradation diagnostic systems 电池退化诊断系统的前景展望

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238546

Gota Asano , Hiroki Nara , Hiroki Hayashi , Tetsuya Osaka , Toshiyuki Momma

{"title":"Prospective view of battery degradation diagnostic systems","authors":"Gota Asano , Hiroki Nara , Hiroki Hayashi , Tetsuya Osaka , Toshiyuki Momma","doi":"10.1016/j.jpowsour.2025.238546","DOIUrl":"10.1016/j.jpowsour.2025.238546","url":null,"abstract":"<div><div>In recent years, the reuse and recycling of large-scale batteries have gained momentum, driven by concerns over material shortages and cost efficiency. As this trend continues, a critical focus has emerged on systems that can accurately diagnose battery degradation, particularly in terms of safety and long-term performance. While several battery condition monitoring systems have already been proposed and are in practical use, this paper focuses on technologies applicable across a wide range of battery systems — not only for electric vehicles (EVs) but also for stationary energy storage — with particular emphasis on Electrochemical Impedance Spectroscopy (EIS). EIS is a powerful diagnostic technique that involves applying a very small alternating current (AC) signal to an electrochemical system, small enough not to interfere with its operation, and analyzing the frequency-dependent response of the resulting current. Because various electrochemical processes — such as electron transfer, ion migration, charge transfer reactions, and diffusion of reactive species exhibit unique characteristic response frequencies, EIS enables the decomposition of these reactions into their fundamental processes. As a result, EIS proves to be an exceptionally versatile and effective method for evaluating not only lithium-ion secondary batteries but also a wide range of electrochemical devices. These include other storage batteries like lead-acid, lithium-ion, and sodium-sulfur (NAS) batteries, as well as energy-generating systems such as solar cells and fuel cells.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238546"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263751","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

Quantitative analysis of electronic and ionic conductivity trade-offs in all-solid-state battery cathodes with CNT conductive additives 碳纳米管导电添加剂的全固态电池阴极中电子和离子电导率权衡的定量分析

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238523

Yeonju Hong , Dongkyu Lee , Eunhyuk Choi , KyungSu Kim , Seung Ho Choi , Dong-Joo Yoo

{"title":"Quantitative analysis of electronic and ionic conductivity trade-offs in all-solid-state battery cathodes with CNT conductive additives","authors":"Yeonju Hong , Dongkyu Lee , Eunhyuk Choi , KyungSu Kim , Seung Ho Choi , Dong-Joo Yoo","doi":"10.1016/j.jpowsour.2025.238523","DOIUrl":"10.1016/j.jpowsour.2025.238523","url":null,"abstract":"<div><div>While sulfide-based all-solid-state batteries (ASSBs) are considered a promising next-generation energy storage solution for the growing electric vehicle market, their commercialization remains hampered by limitations in composite cathode performance, primarily due to insufficient electronic and ionic percolation. To facilitate the electronic percolation, one-dimensional conductive agents (CAs) have been proposed to establish a more effective electronic network within the electrodes. However, the specific effects of carbon additives on electronic and ionic conductivities within cathodes remain insufficiently understood due to the experimental challenges associated with deconvoluting overpotentials. Herein, we systematically investigate the influence of CA dimension and surface characteristics on rate capability. A physics-based pseudo-two-dimensional model was developed to deconvolute overpotentials, revealing that excess carbon nanotubes lead to high ionic overpotentials despite reduced electronic resistance. These findings highlight the importance of balancing electronic and ionic conductivities, providing guidance for optimizing cathode design and high performance ASSBs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238523"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264151","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

Propagation-resistant glass fibre reinforced polymer sleeves for the reinforcement of lithium-ion cells under thermal abuse conditions 热滥用条件下用于增强锂离子电池的抗传播玻璃纤维增强聚合物套管

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238522

Jonathan Peter Charles Allen, Simon Jones, Stene Charmer, Elliott Read, James Marco

{"title":"Propagation-resistant glass fibre reinforced polymer sleeves for the reinforcement of lithium-ion cells under thermal abuse conditions","authors":"Jonathan Peter Charles Allen, Simon Jones, Stene Charmer, Elliott Read, James Marco","doi":"10.1016/j.jpowsour.2025.238522","DOIUrl":"10.1016/j.jpowsour.2025.238522","url":null,"abstract":"<div><div>Thermal runaway propagation can turn small, contained failures of lithium-ion cells into a catastrophic failure of an entire battery pack. The addition of safety materials to contain such an event is therefore crucial. Sidewall rupture events are likely to result in propagation as failure is directed towards adjacent cells. However, sidewall rupture conditions are less studied due to their difficulty to initiate. Using recently published methods to reliably initiate sidewall rupture under thermal abuse, lightweight sleeve materials have been studied to expand upon our understanding of the performance of these interstitial material solutions. Thermal abuse was achieved via a heating coil at a heating rate near to 100 W, maintaining above 250 °C throughout heating at the coil. Cells were abused at 100 % state of charge. Our research involves the use of glass fibre reinforced polymer composite sleeves to reinforce the sidewall casing of cylindrical cells. At the single-cell level, tests show reinforcement sleeves survived the event and forced ejecta upward and downward from the sleeves. At the cluster level, without sleeves propagation was total with all adjacent cells suffering sidewall rupture. With sleeves, propagation prevention was 100 % effective with no voltage or mass loss to adjacent cells, maintaining 4.2 V and 66 g in all adjacent cells. This research underpins the material selection and improved systems designs of future battery systems for a range of applications including road transport, aerospace and domestic energy storage.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238522"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263703","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

Interface adsorption enabled Ah-scale aqueous zinc-ion batteries 界面吸附使ah级水锌离子电池成为可能

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238494

Xue Bai , Yang Nan , Wenbin Guo , Kai Yang , Farzaneh Hekmat , Saeed Shahrokhian , Weiguo Hu , Xiong Pu

{"title":"Interface adsorption enabled Ah-scale aqueous zinc-ion batteries","authors":"Xue Bai , Yang Nan , Wenbin Guo , Kai Yang , Farzaneh Hekmat , Saeed Shahrokhian , Weiguo Hu , Xiong Pu","doi":"10.1016/j.jpowsour.2025.238494","DOIUrl":"10.1016/j.jpowsour.2025.238494","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries (AZIBs) hold great potential for large-scale energy storage but are hindered by the limited reversibility of the Zn anode due to parasitic side reactions and uncontrolled dendrite growth. This study introduces ethylene diamine tetraacetic acid (EDTA) as an additive in aqueous electrolyte to lower the solvating capacity of water and promote anion coordination around Zn ions, thus accelerating desolvation kinetics. Stepwise theoretical calculations reveal that EDTA anion preferentially adsorbs on the Zn anode, effectively reshaping the electric double layer (EDL). Quantitative analysis using the Poisson−Boltzmann equation further demonstrates that the adsorption-type anionic additive increases Zn ion number concentration, reduces concentration polarization, and inhibits side reactions on the electrode surface, thereby enhancing charge transfer efficiency and optimizing the reaction process. With the addition of EDTA, Zn−V<sub>2</sub>O<sub>5</sub> full cells with high mass loading (above 8 mg cm<sup>−2</sup>) exhibit improved self-discharge suppression, rate performance, and cycle performance. Notably, a successful transition from coin cells to larger-scale batteries has been demonstrated with a 1.21 Ah-scale pouch cell at the loading of 20 mg cm<sup>−2</sup>.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238494"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264152","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

Influence of minor alloying elements on γ′-Al2O3 crystalline anodic formation and its impact on the dielectric properties of solid conductive polymer capacitors 微量合金元素对γ′-Al2O3晶体阳极形成的影响及其对固体导电聚合物电容器介电性能的影响

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238462

David Quintero , Takumi Ambe , Mana Iwai , Sho Kitano , Koji Fushimi , Hiroki Habazaki

{"title":"Influence of minor alloying elements on γ′-Al2O3 crystalline anodic formation and its impact on the dielectric properties of solid conductive polymer capacitors","authors":"David Quintero , Takumi Ambe , Mana Iwai , Sho Kitano , Koji Fushimi , Hiroki Habazaki","doi":"10.1016/j.jpowsour.2025.238462","DOIUrl":"10.1016/j.jpowsour.2025.238462","url":null,"abstract":"<div><div>High-purity aluminum with minor alloying elements (Fe, Cu, Si, Zn) at the ppm level is essential for achieving an enhanced etched surface area in capacitor manufacturing. However, their influence on the dielectric material formation and the resulting capacitor properties remains unclear. In this study, a 99.99 % pure aluminum was heat-treated at 300, 400, and 540 °C for 3 h, followed by rapid cooling in water. After forming a hydrated alumina layer, a dielectric layer was formed by anodizing at 700 V in a 0.5 mol L<sup>−1</sup> boric acid solution at 85 °C to form crystalline γ′-Al<sub>2</sub>O<sub>3</sub>. Fe-enriched nanoparticles were observed due to the limited solubility of Fe in Al at temperatures below 400 °C, and their presence led to the formation of flaws in the anodic layer during anodization. The conductive polymer solid capacitors, consisting of anodized aluminum coated with PEDOT:PSS, exhibited breakdown potentials averaging between 407 and 411 V (≈41 % below the anodizing voltage of 700 V). However, after the heat treatment at 540 °C, Fe completely dissolved, and the rapid cooling retained it in solid solution, resulting in a defect-free anodic layer. Consequently, the breakdown potential for the solid polymer capacitor was comparable to, or slightly higher than, the anodizing potential.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238462"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264154","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

Towards green energy: Progress in metal-organic framework and their derived catalysts for hydrogen production through water-splitting via the hydrogen evolution reaction 迈向绿色能源：金属-有机骨架及其衍生的析氢水裂解制氢催化剂的研究进展

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238539

Mohammad Nahidul Islam , Md Mahmudul Hassan Mondol , Md Sohag Torofder , Abrar Hamim Nuren , Nafiz Imran Dipto

{"title":"Towards green energy: Progress in metal-organic framework and their derived catalysts for hydrogen production through water-splitting via the hydrogen evolution reaction","authors":"Mohammad Nahidul Islam , Md Mahmudul Hassan Mondol , Md Sohag Torofder , Abrar Hamim Nuren , Nafiz Imran Dipto","doi":"10.1016/j.jpowsour.2025.238539","DOIUrl":"10.1016/j.jpowsour.2025.238539","url":null,"abstract":"<div><div>Hydrogen evolution reaction (HER) is a promising technology for generating hydrogen through electrocatalytic water splitting, addressing global energy demands. Metal-organic frameworks (MOFs) and their derivatives have gained considerable attention as catalysts in HER due to their unique properties, including high surface area, tunable porosity, and modifiable metal centers. This review presents recent progress in MOF-based electrocatalysts for hydrogen production and highlights their performances as well as property inhancement by various MOF-modifications techniques. Additionally, The HER mechanisms are discussed, with emphasis on the critical role of ΔGH<sub>ads</sub> and electronic structure modulation, with or without doping of elements in optimizing catalytic activity. However, challenges remain regarding scalability, stability in both acidic and alkaline conditions, and cost-effectiveness. Finally, the prospects of MOF-based catalysts in HER and potential solutions to overcome these drawbacks are discussed to promote sustainable and alternative clean energy.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238539"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264157","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

Data-driven assisted state of charge estimation in model-based systems under closed-loop with dynamic covariance correction 基于模型的闭环系统动态协方差校正中数据驱动辅助电荷状态估计

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-07 DOI: 10.1016/j.jpowsour.2025.238570

Tasadeek Hassan Dar, Satyavir Singh

{"title":"Data-driven assisted state of charge estimation in model-based systems under closed-loop with dynamic covariance correction","authors":"Tasadeek Hassan Dar, Satyavir Singh","doi":"10.1016/j.jpowsour.2025.238570","DOIUrl":"10.1016/j.jpowsour.2025.238570","url":null,"abstract":"<div><div>State of charge (SoC) estimation is critical for the effective functioning of battery management systems in electric vehicles. Despite significant advancements in SoC estimation for lithium-ion batteries, existing methods still face challenges in accurately estimating the SoC under dynamic operating conditions, especially in the presence of system nonlinearities like temperature fluctuations, load variations, and aging effects. This work presents a closed-loop SoC estimation framework that integrates a Bidirectional Long Short-Term Memory (Bi-LSTM) neural network with a covariance correction extended Kalman filter (CCEKF), termed as Bi-LSTM-CCEKF, to enhance the accuracy and robustness of SoC prediction. The second-order equivalent circuit battery model is developed, and its parameters are identified using the cuckoo search algorithm. The proposed system utilizes a Bi-LSTM-CCEKF to compensate for the final SoC prediction and dynamically adjust the covariance matrices in the extended Kalman filter, resulting in covariance and error correction based on real-time data. The proposed approach is evaluated with different error matrices that show optimal performance than the existing methods. The system is validated with experimental data, demonstrating significant improvements in SoC estimation accuracy and robustness under various testing profiles. The Bi-LSTM-CCEKF method has a wide operating condition adaptability for electric vehicle battery management system applications.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238570"},"PeriodicalIF":7.9,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263752","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