Journal of energy storage最新文献

{"title":"Multi-task learning framework for fault detection in energy storage system lithium-ion batteries: From degradation to slight overcharge","authors":"Zhipeng Yang ,&nbsp;Kun Zheng ,&nbsp;Hualong Zheng ,&nbsp;Feifan Zhou ,&nbsp;Jinhao Meng ,&nbsp;Zhengxiang Song","doi":"10.1016/j.est.2025.117164","DOIUrl":"10.1016/j.est.2025.117164","url":null,"abstract":"<div><div>Fault detection and state of health (SOH) estimation are both critical for ensuring the safety and reliability of lithium-ion battery energy storage systems (BESS), yet conventional methods often treat them separately, leading to inefficient data utilization and limited fault sensitivity under subtle conditions such as slight overcharge. To enhance diagnostic efficiency and address the challenges of data scarcity, this study proposes a multi-task learning framework that leverages both aging data and limited fault data to simultaneously achieve SOH estimation and overcharge detection in BESS. To overcome inefficiencies of separate models, the framework introduces a shared feature factor within a comprehensive loss evaluation mechanism, allowing a single model to effectively handle both SOH estimation and slight overcharge detection. To further tackle the issue of data imbalance in slight overcharge scenarios, a Mixup data augmentation method was developed, ensuring consistency with the original fault dataset. Testing results demonstrated that the framework achieved an SOH estimation accuracy of 97.8 % and a fault detection accuracy of 97.1 %. Additionally, to meet practical deployment needs, the framework was optimized for efficiency, with memory usage and floating-point operations per second as key criteria, reducing inference time by 55.5 %.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117164"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107188","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}

{"title":"The role of porosity gradient distribution on the heat transfer characteristics of copper foam/paraffin composite phase change material","authors":"Bin Yang,&nbsp;Lingkang Xie,&nbsp;Yaxin Cao,&nbsp;Xiaohui Yu","doi":"10.1016/j.est.2025.117157","DOIUrl":"10.1016/j.est.2025.117157","url":null,"abstract":"<div><div>In this paper, the thermophysical properties of copper foam/paraffin composite PCM during the melting process were numerically investigated by using the finite element analysis (FEA) method. Based on the unit tetrakaidecahedron model with different porosity, six copper foam/paraffin composite PCM with different gradient porosity distributions were designed, and three-dimensional direct numerical simulations were carried out for the copper foam/paraffin composite PCM models with different gradient distributions. The veracity of the analytical model and the numerical method had been validated, and a high degree of concordance had been observed. The phase field distributions and temperature changes of the PCMs with different porosity gradient distributions during the melting process and their effects on the heat storage performance were investigated. The results show that the heat transfer performance and heat storage capacity of the PCMs can be significantly improved by changing the porosity distribution. The L-shaped distribution (82.06 % on the left) could maximize the heat transfer rate of the composite PCM while maintaining a better heat storage capacity. The phase change time was reduced by 16 s and the heat storage rate was increased by 5.7 % compared with the 89.03 % uniform porosity PCM. The results of this study provide new insights into the study of heat transfer properties of pore structure-enhanced composite PCM.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117157"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123906","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}

{"title":"Accurate estimation of residual capacity for large-scale retired-LFP batteries with multiple aging pathways","authors":"Yulong Ni ,&nbsp;Lei Pei ,&nbsp;Wei Jiang ,&nbsp;He Zhang ,&nbsp;Dazhi Yang ,&nbsp;Kai Song ,&nbsp;Chao Lyu ,&nbsp;Chunbo Zhu ,&nbsp;Jiangdong Huang ,&nbsp;Jianing Xu","doi":"10.1016/j.est.2025.117111","DOIUrl":"10.1016/j.est.2025.117111","url":null,"abstract":"<div><div>Accurately estimating the residual capacity of large-scale retired batteries is a challenging task due to the existence of multiple aging pathways, which hinders the development of second-life applications. This study proposes an effective method for accurately estimating the residual capacity of large-scale retired batteries exhibiting multiple aging pathways. First, five clustering features that represent different aging pathways were identified through the analysis of capacity loss mechanisms and incremental capacity (IC) curves. A clustering algorithm combining the self-organizing map (SOM) and K-means (SK-means) algorithms was then developed. The integration of SOM addresses the challenges of determining the initial number of clusters and selecting the initial cluster centers in the K-means algorithm. The SK-means algorithm was subsequently applied to cluster retired lithium iron phosphate (LFP) batteries with multiple aging pathways, using a hybrid dataset from Yishui (YS_LFP) and EVE Energy (YWLN_LFP). Finally, an improved Gaussian process regression (IGPR) model was established by combining the Matern covariance function with automatic relevance determination (ARD) and the Rational Quadratic covariance function with ARD. Based on the clustering results obtained from the SK-means algorithm, distinct residual capacity estimation models were developed for each cluster. Furthermore, highly accurate residual capacity estimates were achieved using only the first 10 % of the data for each cluster, with root mean squared error (RMSE) values within 1.81 % for the first cluster and 0.13 % for the second cluster. Comparisons with various scenario assumptions and different estimation methods demonstrate that the proposed method achieves superior accuracy in estimating residual capacity for batteries with multiple aging pathways.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117111"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123918","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}

{"title":"Electrochemical exploration of perovskite structured LaCoO3 nanoparticles embedded on MXene sheets for high-performance energy conversion and storage devices","authors":"M. Murugesan ,&nbsp;P. Devendran ,&nbsp;K.R. Nagavenkatesh ,&nbsp;N. Nallamuthu ,&nbsp;Sunil Kumar Y.C.","doi":"10.1016/j.est.2025.117123","DOIUrl":"10.1016/j.est.2025.117123","url":null,"abstract":"<div><div>The growth of heterostructures nanomaterials with abundant active sites and outstanding electrical conductivity are essential to boost the electrochemical performance of energy storage and energy conversion applications. In this report, LaCoO₃ and LaCoO₃/MXene nanocomposite (NCs) are prepared by the simple hydrothermal route and prepared samples were analyzed for structural, morphological, and elemental composition using powder X-ray diffraction, SEM, EDX with mapping, HRTEM, FTIR and XPS techniques. The essential electrochemical properties of the prepared NCs were analyzed by CV, GCD, LSV and EIS studies. The specific capacitances (Csp) of perovskite LaCoO₃/MXene NCs have achieved 1253.27 F/g at 5 mV/s. The prepared LaCoO₃/MXene NCs revealed outstanding capacitance retaining up to 87.5 % after 5000 cycles. The LaCoO₃/MXene||MXene was used as asymmetric supercapacitor (ASC) device, which is delivered notable energy density (ED) of 159.28 Wh/kg and a power density (PD) of 1440 W/kg at 1 A/g. After 5000 continuous cycles, the fabricated ACS device capacitance retains of 90.95 % and exhibits a coulombic efficiency of 95.8 %. In addition, from the oxygen evaluation reaction (OER) analysis the LaCoO₃/MXene NCs exhibits overpotential of 321 mV corresponding to the 10 mA/cm² current density, along with the lesser Tafel slope 77.09 mV/dec for OER in 1 M KOH. As a result, the prepared LaCoO₃/MXene electrode having exceptional qualities might prove toward the trustable electrode material for the front-line supercapacitors and water splitting applications.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117123"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124410","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}

{"title":"Boosting the performance of alkaline Al-air batteries by interfacial reconstruction via N-doped carbon quantum dots","authors":"Lei Guo ,&nbsp;Yue Huang ,&nbsp;Ankang Su ,&nbsp;Ting Shang ,&nbsp;Minghe Qu ,&nbsp;Wei Shi ,&nbsp;Yujie Qiang ,&nbsp;Riadh Marzouki","doi":"10.1016/j.est.2025.117136","DOIUrl":"10.1016/j.est.2025.117136","url":null,"abstract":"<div><div>Al-air batteries (AABs) have garnered attention as an innovative energy source with remarkable performance. Unfortunately, the self-corrosion of Al anodes in alkaline electrolytes impedes its commercialization. This study presents N-doped carbon quantum dots (N-CQDs), synthesized via the hydrothermal method, as electrolyte additives in a 4 M NaOH solution, owing to their quantum size, exceptional dispersion, and polar surface functional groups, which facilitate corrosion inhibition and interfacial stabilization. The influence of varying concentrations of N-CQDs on the self-corrosion of Al and the discharge characteristics of AABs was investigated. The reconstruction of Al-electrolyte interface was explored using electrochemical procedures, hydrogen evolution tests, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and molecular simulation methods. Our results indicated that at a concentration of 150 mg/L of the N-CQDs inhibitor, the inhibition efficiency reaches 68.4 %. Concurrently, the anode utilization improves from 41.4 % to 85.0 %, the capacity density escalates from 1234.6 to 2531.6 mAh g⁻¹, and the energy density increases from 1540.2 to 3367.0 Wh kg⁻¹. This concept of a dynamic monolayer protective interface presents an alluring avenue for stable Al anodes, as well as an effective strategy to advance the practical implementations of AABs.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117136"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107064","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}

{"title":"Numerical models with an equivalent thermal conductivity approach for heat release characteristic in densely packed PCM-based finned-tube heat exchangers","authors":"Wenju Hu ,&nbsp;Yuying Bai ,&nbsp;Moning Chang ,&nbsp;Yingjie Du ,&nbsp;Dan Wang","doi":"10.1016/j.est.2025.117087","DOIUrl":"10.1016/j.est.2025.117087","url":null,"abstract":"<div><div>Numerically studying phase change material (PCM)-based finned-tube heat exchangers (PCM-based FHEs) with thin and densely packed fins is challenging due to the high computational grid resolution required and the associated computational costs. To address this gap, this study introduces mathematical models that incorporate an equivalent thermal conductivity approach, specifically tailored for PCM (water)-based FHEs with complex geometries. This innovative approach reduces computational demand by minimizing the required grid resolution, enabling efficient numerical simulations without sacrificing accuracy. The proposed models were experimentally validated using a PCM (water)-based finned-tube heat exchanger functioning as the evaporator in a low-temperature solar thermal energy-assisted air source heat pump system. Model predictions exhibited strong agreement with experimental data, with average standard deviations of 0.938 °C, 0.147 °C, and 0.975 °C during the sensible heat release of water, latent heat release of water, and sensible heat release of ice, respectively. The deviations in the time required for water's sensible heat release and the total phase change duration were 0.78 % and 4.49 %, respectively, while the maximum deviation in refrigerant outlet temperature was 5.6 %. These results underscore the robustness and accuracy of the proposed models in capturing the complex thermal dynamics of PCM-based FHEs with densely packed fins. By addressing the unique challenges associated with such configurations, this work provides a valuable foundation for improving the design and performance of such systems, enabling more efficient thermal energy management in a wide range of practical scenarios.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117087"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107177","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}

{"title":"Recent developments in renewable energy assisted cold thermal energy storage air conditioning systems","authors":"Mohammad Azad Alam ,&nbsp;Kashif Irshad ,&nbsp;Shafiqur Rehman ,&nbsp;Faisal Masood ,&nbsp;Mohamed E. Zayed","doi":"10.1016/j.est.2025.117124","DOIUrl":"10.1016/j.est.2025.117124","url":null,"abstract":"<div><div>The accelerating global fears about climate change and the imperative to reduce energy consumption have spurred a growing interest in sustainable and energy-efficient cooling solutions. Traditional air conditioning systems, reliant on fossil fuels and grid electricity, put a significant burden on energy resources and add to greenhouse gas emissions. To address these challenges, there has been an increase in research and development activities in recent years that are centered on the integration of renewable energy sources with advanced Cold Thermal Energy Storage (CTES) technologies into air conditioning systems. This review article comprehensively explores the latest advancements in renewable energy-assisted CTES air conditioning systems. It begins by elucidating the principles and significance of CTES, discussing its various forms, including phase change materials (PCMs), ice storage, and advanced materials. The integration of PCMs, particularly advanced nano-enhanced or composite PCMs, has been shown to improve thermal storage capacity by approximately 20–30 %, although their long-term stability and environmental impacts require further investigation. Subsequently, the article explores combining geothermal, wind, and solar energy with other sustainable sources into air conditioning systems, emphasizing the potential benefits of reduced greenhouse gas emissions and enhanced energy resilience. For instance, employing solar, wind, and geothermal resources can reduce greenhouse gas emissions by over 75 % compared to conventional systems. It also explores techno-economic analysis, integration challenges, environmental impact, and sustainability assessment. The challenges, such as renewable energy intermittency, resulting in performance variations of about 10–15 %, necessitate the development of intelligent control algorithms and adaptive system architectures. Additionally, the potential research directions, technological innovations, and policy implications have also been discussed in detail.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117124"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124409","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}

{"title":"Recent research progress of MXenes and MXene composites employed in Zn anodes for aqueous Zn ion batteries","authors":"Mengqi Zhu,&nbsp;Wenhui Ni,&nbsp;Xuran Li,&nbsp;Meiling Zhong,&nbsp;Linlan Huang,&nbsp;Yu Tian,&nbsp;Jindan Zhang","doi":"10.1016/j.est.2025.117141","DOIUrl":"10.1016/j.est.2025.117141","url":null,"abstract":"<div><div>Owing to the advantages of high safety, high capacity, and high economic benefits, aqueous zinc ion batteries have attracted more and more attention. However, the problems of dendrite growth and side reactions of zinc anodes seriously hinder the development of high-performance aqueous zinc ion batteries. MXenes, a family of emerging two-dimensional (2D) materials, exhibited tunable surface functional groups, high electrical conductivity, and excellent mechanical properties, demonstrating great potential in overcoming the challenges of zinc anodes. This review presents recent research progress of MXenes employed in zinc anodes. The fabrication methods and related formation mechanisms of MXenes are first summarized. Then the applications of MXenes in zinc anodes are outlined and discussed in detail regarding the surface protective layer and structure construction. In addition, an outlook section is provided to impel possible directions for further development of zinc anodes in aqueous zinc ion batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117141"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107180","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}

{"title":"Solvent-tethered strategy enables the eutectogel integrated electrode with high conductivity and low-temperature resistance applying for supercapacitors","authors":"Jie Li ,&nbsp;Xiangyu Lin ,&nbsp;Shanshan Wang ,&nbsp;Linyuan Chen ,&nbsp;He Liu ,&nbsp;Hongxiao Wang ,&nbsp;Qingtao Li ,&nbsp;Xu Xu","doi":"10.1016/j.est.2025.117126","DOIUrl":"10.1016/j.est.2025.117126","url":null,"abstract":"<div><div>As demand for wearable electronic devices grows, developing flexible supercapacitors with gel electrolytes has become imperative. To address the low conductivity and poor low-temperature resistance of conventional gel electrolytes, herein, a novel solvent-tethered strategy is proposed and the in-situ polymerization is employed to prepare the eutectogel integrated electrode with high conductivity and low-temperature resistance. Specifically, glycerol (GLy) is incorporated as a tether to bind with acrylic acid (AA, hydrogen bond donor), thus allowing it easier for the quaternary ammonium cations (Ch⁺) of the choline chloride (ChCl, hydrogen bond acceptor) to migrate, thereby improving the ionic conductivity. Theoretical validation via density functional theory confirms the feasibility of this strategy. The resulting eutectogel electrolyte (CAG-1.2) exhibits a high conductivity of 17.0 mS cm⁻¹ at room temperature and remains unfrozen at −90 °C. Moreover, the symmetrical electrode supercapacitor based on CAG-1.2 delivers a specific capacitance of 170 F g⁻¹ and demonstrates remarkable cycling stability over 40,000 cycles, operating effectively even in extreme environments. This strategy provides a new theoretical reference for designing high-performance flexible electronic devices.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117126"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107062","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}

{"title":"Efficient regeneration of anode graphite from spent lithium-ion batteries using a deep eutectic solvent method","authors":"Nannan Cheng,&nbsp;Xiaolong Cheng,&nbsp;Rong Fan,&nbsp;Fangzhi Huang,&nbsp;Shikuo Li","doi":"10.1016/j.est.2025.117168","DOIUrl":"10.1016/j.est.2025.117168","url":null,"abstract":"<div><div>Herein, a rational-designed green deep eutectic solvent method is employed for efficient regeneration of the anode graphite from the spent batteries. The solid electrolyte interphase layer and metal ions coats on the graphite surface can be efficiently removed through the proton-donor effect from the Lewis acid-assisted deep eutectic solvent, leading to well-preserved bulk graphite, greatly reduced electrochemical impedance and polarization. The regenerated graphite exhibits an initial specific capacity of 344.5 mAh g⁻¹ at a current density of 0.2C, with a capacity retention rate of 98.9 % after 160 cycles. The specific capacity is close to 96.7 % of the commercial graphite (356.5 mAh g⁻¹) at that condition. Further, the regenerated graphite also possesses a high specific capacity of 218.0 mAh g⁻¹ at 1C, approximately 3.3 times the improvement of the spent graphite (66.5 mAh g⁻¹). Moreover, an economic analysis of the regenerated graphite suggests that the utilization of the green solvent to regenerate the anode graphite is a cost-effective method to reduce energy consumption by 69.0 % compared to high-temperature acid leaching recycling. This work provides a promising green approach to regenerate and reutilize the anode graphite materials from industrial spent lithium-ion batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"127 ","pages":"Article 117168"},"PeriodicalIF":8.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107178","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}