Journal of energy storage最新文献

{"title":"Dual-phase (AlMgCoNiCuZn)O high-entropy oxide embedded in graphite nanosheets with superior lithium storage capability","authors":"Yuxin Li ,&nbsp;Yongchang Qiu ,&nbsp;Guanmei Yao ,&nbsp;Xu Mou ,&nbsp;Xianqing Liang ,&nbsp;Haifu Huang ,&nbsp;Dan Huang ,&nbsp;Wenzheng Zhou ,&nbsp;Shuaikai Xu ,&nbsp;Jin Guo","doi":"10.1016/j.est.2025.115993","DOIUrl":"10.1016/j.est.2025.115993","url":null,"abstract":"<div><div>High-entropy oxides (HEOs) are promising anode materials for Li-ion batteries (LIBs) due to their wide component range and tunable Li-storage property. However, low electrical conductivity and sluggish reaction kinetics restrict their practical applications. In this work, a novel (AlMgCoNiCuZn)O HEO-graphite composite (Al-MgTMO/G) was constructed via facile solid-state reaction and scalable ball milling methods. The synthesized composite has an architecture that includes fine Al-MgTMO nanoparticles embedded in ultrathin graphite nanosheets. It is found that Al-MgTMO contains a major rock-salt phase along with a mirror spinel phase, which induces the generation of extra oxygen vacancies. These factors together enhance its Li-ion transport and electrochemical kinetics. Meanwhile, graphite nanosheets can further increase the electrical conductivity and stabilize the structure of Al-MgTMO. As a result, the Al-MgTMO/G composite delivers a high reversible capacity of 949.4 mAh g⁻¹ after 160 cycles at 0.2 A g⁻¹. Additionally, it also exhibits intriguing rate capability of 481.1 mAh g⁻¹ at 2.0 A g⁻¹ and long-term stability of 405.3 mAh g⁻¹ after 400 cycles at 1.0 A g⁻¹. This work presents a simple, efficient and scalable strategy for designing HEO-based anode materials with high lithium storage performance.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115993"},"PeriodicalIF":8.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520449","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":"Effects of heterogeneous structure on conduction mechanism and electrochemical performance of LiTa2PO8-fast lithium-ion conductor in quasi-solid-state lithium-ion batteries","authors":"Sharad Singh Jadaun ,&nbsp;Amrish K. Panwar ,&nbsp;Geetanjali","doi":"10.1016/j.est.2025.116030","DOIUrl":"10.1016/j.est.2025.116030","url":null,"abstract":"<div><div>All-solid-state lithium-ion (Li-ion) batteries offer enhanced safety and energy density, making them appealing as next-generation energy storage technologies compared to existing rechargeable lithium-ion batteries. However, their widespread applications are still limited due to their weak interfacial characteristics and the low ionic conductivity of solid electrolytes. Hence, there is a need to develop novel solid-state electrolytic materials with exceptional qualities that can be used as solid-state ionic conductors. LiTa₂PO₈ (LTPO) is a recently developed solid electrolyte. It has strong ionic conductivity (&gt;10⁻⁴ S cm⁻¹) and nominal grain boundary conductivity at room temperature, which qualifies it for use in solid-state Li-ion batteries. Here, in this investigation, LTPO has been synthesized using a solid-state reaction route, and its sintering temperature, structure, and microstructure have been investigated using TGA/DSC, XRD, SEM, and TEM, respectively. This is the first time in the relevant literature, that multi-step sintering has been employed to produce dense LTPO pellets, and the presence of the Maxwell- Wagner effect due to the heterogeneous structure of LTPO using dielectric, impedance spectroscopy and different conduction mechanisms in grain and grain boundary has been studied. Furthermore, the electrochemical performance of solid-state electrolyte has been tested in a Lithium symmetric cell using protective buffer layers (BLs) of Polypropylene (PP) soaked with LiPF₆, and the symmetric cell shows stable cyclic performance up to 120 h with minimum overpotential values. Full LFP|BL|LTPO|BL|Li cell has been fabricated and shows a stable discharge capacity of 91.9 mAhg⁻¹ after 35 cycles with a good capacity retention of 80.9 %.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 116030"},"PeriodicalIF":8.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527135","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":"Cu-based Prussian blue cubic sheet with core-shell structure for high-rate sodium-ion batteries","authors":"Haonan Cui ,&nbsp;Jun Wu ,&nbsp;Zibin Xu ,&nbsp;Junming Xu ,&nbsp;Yurong Cai ,&nbsp;Wenbin Ni ,&nbsp;Xiaochong Zhou","doi":"10.1016/j.est.2025.116031","DOIUrl":"10.1016/j.est.2025.116031","url":null,"abstract":"<div><div>Suffering from their severe frame distortion, conventional Prussian blue analogues (PBAs) have still remained challenges in poor cyclability and short life-span for cathodes of sodium-ion batteries (SIBs). By employing a two-step co-precipitation coating strategy, a cubic sheet FeCu-HCF@Cu-HCF composite was in-situ synthesized in this paper with a core-shell structure of Na_xFe_1-yCu_y[Fe(CN)₆] (FeCu-HCF) as a core and Na_xCu[Fe(CN)₆] (Cu-HCF) as a shell layer. As an active cathode for SIBs, as-prepared FeCu-HCF@Cu-HCF composite showed an excellent cyclability retaining its initial capacity of 83.08 % after 300 cycles at 0.5C and high-rate capability of up 10C (1C = 140 mA·g⁻¹). Results analysis demonstrated that FeCu-HCF@Cu-HCF sample achieved an improved reaction kinetics with a higher Na⁺ diffusion coefficient and a lower coordinated water content than FeCu-HCF, indicating its better application prospect for high-performance of SIBs.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 116031"},"PeriodicalIF":8.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520724","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":"Study on the influence of high-rate charge/discharge cycle numbers and spacing on thermal runaway propagation in lithium-ion batteries","authors":"Yajun Huang ,&nbsp;Yinquan Zhao ,&nbsp;Weifeng Xu ,&nbsp;Wei Bai ,&nbsp;Xiongqi Shen ,&nbsp;Junling Wang ,&nbsp;Yawei Lu ,&nbsp;Zhirong Wang","doi":"10.1016/j.est.2025.116005","DOIUrl":"10.1016/j.est.2025.116005","url":null,"abstract":"<div><div>This study examines the effects of high-rate cycling and inter-battery spacing on thermal runaway propagation (TRP) in lithium-ion batteries through thermal abuse tests. Experiments were conducted under a 3C charge/discharge rate with cycle numbers of 30, 50, 70, and 100, and inter-battery spacings of 0 cm, 1 cm, 1.5 cm, and 2 cm. The results reveal that increasing spacing significantly delays the onset of TRP, with no TR occurring at a spacing of 2 cm and a maximum temperature of 72 °C, establishing 2 cm as the critical spacing for TRP. 100 charge/discharge cycles at a 3C rate resulted in a 21.3 % decrease in state of health (SOH), a 317-s advancement in thermal runaway (TR) onset time, and a 17.2 % reduction in peak temperature compared to 30 charge/discharge cycles. Declining SOH led to greater instability, shortening the time to trigger TR and reducing the peak temperature. The mass loss during TR was directly proportional to SOH. Thermal analysis showed that, at a 1 cm spacing, the second battery experienced TR with minimal heat absorption, whereas increasing spacing to 1.5 cm or 2 cm improved heat dissipation and extended TRP time, preventing TR despite increased surface temperatures. Additionally, at a 1 cm spacing, fewer charge/discharge cycles required greater heat absorption for the second battery to reach TR. Changes in electrode morphology after charge/discharge cycling were also examined. This research provides insights into TRP mechanisms in high-rate charge/discharge cycling, offering theoretical guidance for TR suppression and enhancing battery safety and energy storage technology.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 116005"},"PeriodicalIF":8.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520347","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":"A physically cross-linked carboxymethyl cellulose/chitosan hydrogel electrolyte with high ionic conductivity for zinc-ion hybrid supercapacitors","authors":"Yujia Yang,&nbsp;SiYang Ni,&nbsp;JingQiao Zhu,&nbsp;Qiang Xiao,&nbsp;Xianliang Song,&nbsp;Xiaojuan Jin","doi":"10.1016/j.est.2025.115980","DOIUrl":"10.1016/j.est.2025.115980","url":null,"abstract":"<div><div>The growing interest in zinc-ion hybrid supercapacitors (ZHSCs) has spurred research into hydrogel polymer electrolytes with high ionic conductivity and electrochemical stability. Leveraging the advantages of natural polymers, this study presents a carboxymethyl cellulose (CMC)/chitosan (CS) PECH synthesized via the semi-dissolution acidification sol-gel transition (SD-A-SGT) method. The presence of -COO⁻ and -NH₃⁺ groups within the PECH provides ion transport channels, enabling the formation of a CMC/CS-ZnSO₄ (CCZ) hydrogel electrolyte with high ionic conductivity (110 mS cm⁻¹) and ion transference number (0.73) upon soaking in ZnSO₄ solution. This CCZ electrolyte exhibits excellent polarization stability, a wide electrochemical stability window, and low corrosion current in zinc symmetric cells. ZHSCs utilizing the CCZ electrolyte demonstrate impressive cycling stability (retaining 84.8 % capacity after 10,000 cycles at a high current density of 10.0 A g⁻¹) and favorable energy density (186.88 Wh kg⁻¹ at 1.6 kW kg⁻¹⁾. Furthermore, the electrolyte maintains its electrochemical stability in flexible ZHSC devices, showcasing its potential for flexible energy storage. This research contributes to the development of high-performance, durable polyelectrolyte composite hydrogel electrolytes for flexible ZHSC devices.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115980"},"PeriodicalIF":8.9,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520787","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":"Generalizing capacity estimation for cross-domain lithium-ion batteries with deep multi-domain adaptation","authors":"Yubo Zhang,&nbsp;Youyuan Wang ,&nbsp;Zhiwei Shen,&nbsp;Dongning Huang,&nbsp;Weigen Chen","doi":"10.1016/j.est.2025.115947","DOIUrl":"10.1016/j.est.2025.115947","url":null,"abstract":"<div><div>Accurately estimating the available capacity to correctly reflect the state of health (SOH) of lithium-ion batteries is crucial for ensuring their safe and efficiency. However, capacity estimation models confront major challenges in generalizing across lithium-ion batteries with different chemistry, types, and varying operating conditions because of the distribution shifts. To address the issue, this paper proposes a deep multi-domain adaptation (DMDA) method to tackle distribution shift problems and to enhance the generalization of capacity estimation for various batteries under dynamic operating conditions. First, cycling experiments with prismatic cells are conducted and compared with public datasets to form a mathematical problem statement. Second, marginal and conditional distribution shifts between multi-domains are aligned by the proposed hybrid loss function and the novel optional kernel strategy during a semi-supervised training process. Meanwhile, we present a training strategy by embedding Bayesian Optimization. Finally, the superiority of the proposed method is verified by comparing with the state-of-the-art transfer learning methods on two case studies. Dimensionality reduction and visualization analysis are further conducted to enhance the interpretability of the results. This work contributes to broaden the existing capacity estimation model to encompass a wide range of lithium-ion batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115947"},"PeriodicalIF":8.9,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521046","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":"Biomass-derived graphitic-like hierarchical porous carbon for electrochemical supercapacitor application","authors":"Meseret Ethiopia Guye,&nbsp;Mintesinot Dessalegn Dabaro,&nbsp;Hern Kim","doi":"10.1016/j.est.2025.116037","DOIUrl":"10.1016/j.est.2025.116037","url":null,"abstract":"<div><div>High conductivity and applicable pore size are typically anticipated as key features for high-performance capacitive carbon electrodes in supercapacitor applications. However, these desired characteristics often conflict with each other, making incorporating both into a single carbon material challenging. Herein, graphitic-like hierarchical porous carbon (GHPC) was synthesized through a straightforward two-step pyrolysis process, utilizing pumpkin skin as the precursor without activating agents. We found that in contrast, to single pyrolysis under N₂ atmosphere, further annealing under H₂ gas effectively improves specific surface area and creates a graphitic-like hierarchical porous structure with mesopores, achieving an effective electrode potential for supercapacitors. GHPC's unique graphitic-like hierarchical porous structure contributes to excellent electrochemical performance achieving a specific capacitance of 274 Fg⁻¹ and exceptional rate capability of 67 % at 1 Ag⁻¹. Furthermore, GHPC showcased an outstanding cyclic stability of 95.7 % at current density of 2 Ag⁻¹ after 5000 cycles in 1 M KOH analyte, comparable to the state-of-the-art chemically activated biomass-derived carbon. These results emphasize the potential of biomass-derived graphitic-like hierarchical porous carbon as a promising electrode material for high-performance supercapacitors.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 116037"},"PeriodicalIF":8.9,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521047","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":"Advanced electrode materials: The role of double-linker Ni and Co metal-organic frameworks in electrochemical energy storage","authors":"Muhammad Azam Khan ,&nbsp;Hassan Tariq ,&nbsp;Muhammad Shahid Khan ,&nbsp;Ahmed Shuja ,&nbsp;Muhammad Musharaf ,&nbsp;Saikh Mohammad Wabaidur ,&nbsp;Mohd Zahid Ansari ,&nbsp;Yaqoob Khan ,&nbsp;Imran Murtaza","doi":"10.1016/j.est.2025.115920","DOIUrl":"10.1016/j.est.2025.115920","url":null,"abstract":"&lt;div&gt;&lt;div&gt;In recent years, metal-organic frameworks (MOFs) have garnered significant interest as novel electrode materials for energy storage devices. However, many MOFs' limited conductivity and capacity have hindered their widespread application. This study presents a practical approach to enhancing MOF conductivity by incorporating two organic linkers, ethylenediaminetetraacetic acid (EDTA) and 2,6-pyridine dicarboxylic acid (PDC), into a pristine MOF structure to form a high-dimensional framework. To the best of our knowledge, this is the first comprehensive evaluation of a double-linker MOF featuring these two linkers for supercapacitor applications. A simple solvothermal method was used to incorporate EDTA and PDC linkers, promoting hydrogen bonding, multiple coordination modes, and π-stacking interactions, which contribute to the stabilization and formation of high-dimensional Ni and Co frameworks. Structural analysis using X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) confirmed the presence of functional groups from the linkers. The morphology and surface roughness of the synthesized materials were analyzed using scanning electron microscopy (SEM) and a surface profilometer, respectively. High-resolution transmission electron microscopy (HRTEM) images confirmed the polycrystalline nature of the MOFs, while the TEM image at 50 nm magnification revealed a layered structure consisting of thin, transparent sheets. This observation highlights a lightweight, porous framework characterized by uniform thickness and smooth edges, indicating the successful synthesis of MOFs with minimal defects. Furthermore, nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS) results corroborate the formation of the framework. The high porosity of the double-linker MOFs enabled enhanced ion transport from the electrolyte during faradaic reactions, providing favorable pathways for charge transfer and leading to excellent electrochemical performance. The supercapacitive behavior of the synthesized mono-linker and double-linker MOFs was thoroughly investigated using galvanostatic charge/discharge (GCD) experiments in 3 M KOH electrolyte, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Notably, the double-linker Ni- and Co-MOFs exhibited superior performance, with specific capacitances of 984 Fg&lt;sup&gt;−1&lt;/sup&gt; and 950 Fg&lt;sup&gt;−1&lt;/sup&gt;, respectively, at a current density of 1 A g&lt;sup&gt;−1&lt;/sup&gt;. This significantly improved their mono-linker counterparts (mono-metallic Ni: 379 Fg&lt;sup&gt;−1&lt;/sup&gt;, mono-metallic Co: 452 Fg&lt;sup&gt;−1&lt;/sup&gt;). The mono-linker MOFs were converted to their oxides upon annealing at 400 °C. Interestingly, annealing the double-linker MOFs at the same temperature altered their phase, particularly in the case of Co, which transitioned from hybrid to pseudocapacitive behavior. The molarity of the aqueous electrolyte was also optimized. A two-electrode device based on the double-link","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115920"},"PeriodicalIF":8.9,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512538","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":"Metal-organic framework derived SrTi1-xCoxO3-δ as anion-intercalated electrode for supercapacitor","authors":"Geeta Chaudhary ,&nbsp;Shobhita Singal ,&nbsp;Ashish Yadav ,&nbsp;Prakshi Soni ,&nbsp;Raj Kishore Sharma","doi":"10.1016/j.est.2025.115984","DOIUrl":"10.1016/j.est.2025.115984","url":null,"abstract":"<div><div>Herein, we have synthesized Co-doped SrTiO₃ (SrTi_1-xCo_xO_3-δ) at ambient conditions using metal-organic framework (MOF) of constituent elements. Structural and charge storage characteristics of SrTiO₃ were optimized by Co-doping (0 ≤ x ≤ 3 %). Different morphological features i.e. nano-block to elongated nano-needles were obtained in SrTi_1-xCo_xO_3-δ by changing the Co concentration from 0 ≤ x ≤ 3 %. Being larger in size than Ti, Co doping expanded the interlayer spacing of (011) plane and enhanced the oxygen vacancy concentration to maintain charge neutrality. Among all, SrTi_1-xCo_xO_3-δ (x = 2 %) exhibited an exceptionally high electrochemically active surface area (ECSA) of 2388 m² g⁻¹, lowest optical band gap (2.7 eV), and highest specific capacitance (1311 F g⁻¹ @ 2 A g⁻¹). This is attributed to the rich electronic conductivity, and highest oxygen vacancy concentration (∼31 %) in SrTi_1-xCo_xO_3-δ (x = 2 %) which boosted the anion-intercalated energy storage. Fabricated symmetric (STCO||STCO) and asymmetric (STCO||Activated Carbon) cells resulted in an appreciable energy density of 38 Wh kg⁻¹ @575 W kg⁻¹ and 53.5 @1196 W kg⁻¹ with an operating voltage of 1.2 V &amp; 1.3 V, respectively.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 115984"},"PeriodicalIF":8.9,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512039","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":"State of power estimation for LIBs in electric vehicles: Recent progress, challenges, and prospects","authors":"Xueling Shen ,&nbsp;Hang Zhang ,&nbsp;Jingjing Li ,&nbsp;Chenran Du ,&nbsp;Zhanglong Yu ,&nbsp;Yi Cui ,&nbsp;Yanyan Fang ,&nbsp;Zhong Wang","doi":"10.1016/j.est.2025.116042","DOIUrl":"10.1016/j.est.2025.116042","url":null,"abstract":"<div><div>The rapid advancement of electric vehicle (EV) technology is revolutionizing the transportation, with electrification and intelligence serving as the primary driving forces. Accurate battery power estimation is crucial to this transformation. Lithium-ion batteries (LIBs), as the core energy storage components in EVs, exhibit strong nonlinear characteristics across multiple physical domains due to material properties and compatibility issues. As a result, accurate power estimation for LIBs poses a significant challenge in current EV development. This paper reviews state of power (SOP) estimation methods, categorizing them into four major types: characteristic maps, models, data-driven machine learning, and multi-state joint estimation. The principles, functionalities, and applications of each method are evaluated. This paper uncovers the underlying relationships among multiple states and elucidates why multi-state joint estimation outperforms single-state estimation. Furthermore, the fusion of physics-based models and data-driven models emerges as a promising direction for achieving high-precision SOP estimation under dynamic operating conditions. The challenges faced in SOP estimation are detailed, including the requirements for high accuracy, real-time performance, robustness, predictive capabilities, and safety margins. This study highlights four technical contradictions, such as balancing model complexity and real-time performance, and proposes a novel SOP estimation framework that leverages hybrid modeling and multi-state joint estimation. This new framework will bridge the gap between current estimation methods and the demands of intelligent EVs, thereby contributing to advancing the understanding of SOP estimation and ultimately enhancing battery performance, safety, and longevity.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"115 ","pages":"Article 116042"},"PeriodicalIF":8.9,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512532","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}