S. Gadea , J. Castillo , A. Santiago , L. Fallarino , R. Cid , N. Herran-Diaz de Argote , A. Villaverde , I. Ruiz de Larramendi , J. Rikarte
{"title":"Tailoring copper interfaces for high quality and performance thin electrodeposited lithium metal anodes","authors":"S. Gadea , J. Castillo , A. Santiago , L. Fallarino , R. Cid , N. Herran-Diaz de Argote , A. Villaverde , I. Ruiz de Larramendi , J. Rikarte","doi":"10.1016/j.est.2025.118823","DOIUrl":"10.1016/j.est.2025.118823","url":null,"abstract":"<div><div>Lithium metal anode (LMA) is considered a key component for next-generation high-energy-density batteries due to its high theoretical capacity (3860 mAh g<sup>−1</sup>) and low electrochemical potential (−3.04 V vs. standard hydrogen electrode). Among the strategies to harness its full potential, implementing low lithium excess is particularly promising, enabling competitive practical energy density values at lower cost. However, the widespread adoption of LMAs remains limited due to performance challenges associated with cell performance and limitations in conventional lithium production processes. This study explores electrodeposition as a viable approach to fabricate thin LMAs. Particularly, the effect of substrate modifications via magnetron sputtering is systematically investigated, demonstrating that the interaction between the sputtered metal and lithium directly influences the morphology and surface composition of the electrodeposited lithium, and, ultimately, the electrochemical performance of the cell. This work highlights electrodeposition as a promising alternative process for producing high-quality and thin LMAs suitable for high energy density lithium metal batteries.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"118823"},"PeriodicalIF":8.9,"publicationDate":"2025-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326563","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}
Zhihua Wang , Wen Zhang , Xijun Wang , Zixi Shu , Huacheng Wu , Chenlei Li
{"title":"Fractional-order dynamic model-based terminal voltage estimation for vanadium redox flow battery","authors":"Zhihua Wang , Wen Zhang , Xijun Wang , Zixi Shu , Huacheng Wu , Chenlei Li","doi":"10.1016/j.est.2025.118802","DOIUrl":"10.1016/j.est.2025.118802","url":null,"abstract":"<div><div>The vanadium redox flow battery (VRFB) is a prominent large-scale energy storage technology, distinguished by its exceptional cycle life and high safety performance. The development of an accurate model capable of replicating VRFB characteristics under real operating conditions is imperative for the advancement of control strategies and condition monitoring techniques. While traditional integer-order models have been extensively utilized, they are inadequate in describing the complex electrochemical behaviors of VRFBs, particularly in capturing the non-integer-order dynamic characteristics inherent in the polarization process.</div><div>To address this limitation, the present study proposes a novel dynamic model for VRFBs based on fractional-order theory. The experimental methodology involves constant-current intermittent discharge testing. Subsequently, a parameter identification method incorporating nonlinear least squares is employed to determine key model parameters, including internal ohmic resistance, polarization resistance, fractional order capacitance, and fractional order. The identified parameters are then applied to simulate the performance of a single VRFB cell. The simulation results demonstrate that the battery's constant-current intermittent discharge output voltage follows a characteristic three-stage pattern across varying discharge rates. In conclusion, to validate the proposed model, the battery's voltage response is subjected to experimental testing under a variety of constant-current intermittent discharge conditions. The findings of the study demonstrate a high degree of concordance between the model and the experimental data. The absolute error recorded was no greater than 3.58 %, and the root-mean-square error was no greater than 5.67 mV. This level of accuracy serves to confirm the model's reliability for practical applications. In addition, the established theoretical framework provides a solid foundation for advanced VRFB control strategies and state monitoring, which contributes to the optimization of large-scale energy storage systems.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"118802"},"PeriodicalIF":8.9,"publicationDate":"2025-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326568","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}
Reham R. Mostafa , Mahmoud Abdel-Salam , Ahmed Fathy
{"title":"EQDEHO: An enhanced Elk herd optimizer for adaptive energy management in grid-connected microgrids with renewable and EV integration","authors":"Reham R. Mostafa , Mahmoud Abdel-Salam , Ahmed Fathy","doi":"10.1016/j.est.2025.118928","DOIUrl":"10.1016/j.est.2025.118928","url":null,"abstract":"<div><div>This research suggests EQDEHO, an enhanced version of Elk herd optimizer (EHO), for optimally managing the energy of a microgrid (MG) powered by renewable and traditional energy resources. The proposed approach includes three essential enhancements: dynamic elite mutation strategy (DEMS), enhanced solution quality strategy (ESQ), and adaptive bull rate strategy (ABRS). The DEMS is employed to achieve a gradual transition from broad exploration to focused exploitation to prevent falling into premature convergence. The ESQ is utilized to enhance exploration and exploitation capabilities, helping the algorithm to avoid local optima and progressively refine solution quality. Moreover, ABRS introduces a dynamic bull rate that evolves using exponential and cosine functions. It begins with a higTwo versions have been provided for Author Contributions. We have followed the .json as per style. Please check and correct if necessary. h value to encourage exploration and gradually decreases to strengthen exploitation, thereby improving search adaptability over time. The MG under consideration is a grid-connected and includes photovoltaic (PV) generating unit, wind turbine (WT), fuel cell (FC), micro-turbine (MT), battery storage system, and electric vehicles (EVs). The primary goals are to reduce the overall operational costs and environmental pollutant emissions while keeping the generation and dTwo versions have been provided for Author Contributions. We have followed the .json as per style. Please check and correct if necessary. emand balancing, generation restrictions, and storage limitations. Two situations are investigated: the first excludes EVs, while the second tests the EVs in three different charging modes: uncontrolled, controlled, and smart. The recommended EQDEHO is evaluated in contrast to the published Fuzzy self-adaptive particle swarm optimizer (FSAPSO) and other programmed algorithms. The proposed approach outperformed FSAPSO in terms of reducing MG operating costs and emissions by 11.642% and 56.856%, respectively, while the EVs are detached from the MG. Furthermore, the largest reductions when the EVs are plugged into the MG attained with the suggested EQDEHO are 23.018% compared to AOA, 32.840% compared to SWO, and 60.765% compared to AOA during uncontrolled, controlled, and smart modes, respectively. The obtained findings demonstrated the strength and competence of the proposed approach as an effective energy management solution for MG.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118928"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326078","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}
Yuanzhe Gu , Xuelai Zhang , Jun Ji , Weisan Hua , Chao Lan
{"title":"Shipboard applications of heat pumps and thermal energy storage under dual carbon targets: Opportunities and challenges","authors":"Yuanzhe Gu , Xuelai Zhang , Jun Ji , Weisan Hua , Chao Lan","doi":"10.1016/j.est.2025.118556","DOIUrl":"10.1016/j.est.2025.118556","url":null,"abstract":"<div><div>In response to China's carbon peaking and carbon neutrality goals—commonly referred to as the “dual carbon” strategy—and the International Maritime Organization's emission reduction targets, shipboard energy systems face the dual challenge of high carbon emissions and low efficiency. Traditional thermal management technologies struggle to adapt to the dynamic marine environment, characterized by fluctuating temperatures and variable energy demands. The integration of heat pumps and phase change materials (PCMs) presents a promising solution, offering efficient heat recovery and thermal storage. However, current heat pump systems remain constrained by large temperature variations, limited space, and stability issues under marine conditions. Among PCMs, paraffin-based materials are the most widely used due to their thermal stability, safety, and cost-effectiveness, despite their low thermal conductivity. Among system configurations, embedded Heat Pump–PCM systems show significant advantages in space-limited environments such as ships, while parallel configurations provide greater flexibility for variable load conditions. Through case studies in waste heat recovery, battery thermal management, and cabin air conditioning, the system's energy-saving potential and feasibility are evaluated. A comprehensive performance assessment framework is proposed, incorporating coefficient of performance, thermal storage efficiency, and life cycle cost, providing technical insights for the development of green, efficient, and intelligent ship energy systems.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118556"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326094","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}
Xinyu Zhang , Jun Tang , Bin Yao , Jiajun Zhu , Wulin Yang , Lingping Zhou , Licheng Tang , Zaifang Yuan , Licai Fu
{"title":"Anti-perovskite halide Li2(OH)Br1-xClx as a high-performance electrolyte for high-temperature batteries","authors":"Xinyu Zhang , Jun Tang , Bin Yao , Jiajun Zhu , Wulin Yang , Lingping Zhou , Licheng Tang , Zaifang Yuan , Licai Fu","doi":"10.1016/j.est.2025.118914","DOIUrl":"10.1016/j.est.2025.118914","url":null,"abstract":"<div><div>Anti-perovskites halide salts Li<sub>2</sub>(OH)X (X = Halogen) are widely investigated as solid-state electrolytes. Owing to their low melting points and excellent thermal stability, the Li<sub>2</sub>(OH)X has been applied in the thermal battery electrolytes. Li<sub>2</sub>(OH)Br<sub>1-x</sub>Cl<sub>x</sub> presented low melting points (250–260 °C), outstanding thermal stability (<5 % mass loss at 550 °C), superior ionic conductivity (2.06 S cm<sup>−1</sup> at 500 °C for Li<sub>2</sub>(OH)Br<sub>0.85</sub>Cl<sub>0.15</sub> composite electrolytes), and high decomposition voltages. Cl<sup>−</sup> doping further optimizes the material's electrochemical properties: the Li-B| Li<sub>2</sub>(OH)Br<sub>0.85</sub>Cl<sub>0.15</sub>|Cu<sub>2</sub>O cell provides a high voltage plateau of 1.97 V and a high specific capacity of 356 mAh g<sup>−1</sup> at 300 °C; compared to the common low-melting-point electrolyte LiF-LiCl-KBr-CsCl in thermal batteries, it delivers a specific discharge capacity 190 % higher under the same testing conditions (400 °C, 100 mA cm<sup>−2</sup>); compared to Li<sub>2</sub>(OH)Br, it delivers a 29.3 % reduction in pulsed internal resistance and a 36.7 % increase in decomposition voltage at 500 °C. This work not only explores the high-temperature electrochemical properties of anti-perovskite halide salts and broadens their application scope but also introduces a novel low-melting-point molten salt into the thermal battery field, holding promise for resolving the long-standing challenge of thermal batteries' inability to achieve high-current discharge at low temperatures.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118914"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326133","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}
Na Du , Xintian Wang , Ruo Tong Wang , Enting Xu , Yu Ying Zhu , Yan Zhao , Peng Ren , Fei Yen
{"title":"A hidden role of the nitrate ions in nitrate-based energy storage materials","authors":"Na Du , Xintian Wang , Ruo Tong Wang , Enting Xu , Yu Ying Zhu , Yan Zhao , Peng Ren , Fei Yen","doi":"10.1016/j.est.2025.118906","DOIUrl":"10.1016/j.est.2025.118906","url":null,"abstract":"<div><div>Nitrate-based salts exhibit anomalously large changes of entropy near some of their phase transitions. When accounting for the possible sources of entropy, usually only the positional and orientational aspects of the ions are considered while temporal ordering has been largely ignored. In-plane librations of polyatomic ions such as NO<sub>3</sub><sup>−</sup> possess a periodically oscillating orbital magnetic moment so if there is an onset of gearing (temporal ordering) between neighboring NO<sub>3</sub><sup>−</sup>, then the equivalent of an antiferromagnetic structure is established and the magnetic susceptibility χ(<em>T</em>) should exhibit a pronounced change. In the cases of LiNO<sub>3</sub>, Ca(NO<sub>3</sub>)<sub>2</sub>, K<sub>0.5</sub>Rb<sub>0.5</sub>NO<sub>3</sub> and C(NH<sub>2</sub>)<sub>3</sub>NO<sub>3</sub>, we experimentally identify sharp discontinuities in χ(<em>T</em>) at their respective order-disorder phase transitions <em>T</em><sub>N</sub> indicating gearing of NO<sub>3</sub><sup>−</sup>. A model employing the law of conservation of angular momentum is used to explain the possible origin of gearing below <em>T</em><sub>N</sub>. Our findings identify a previously unidentified type of molecular interaction and source of entropy which may be exploited to further increase the enthalpy of the widely-popular hydrated salts employed as energy storage devices.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118906"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326519","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":"Relative contribution and sensitivity analyses for decision-making in the environmental assessment of bio-based phase change materials","authors":"Humberto Santos , Silvia Guillen-Lambea","doi":"10.1016/j.est.2025.118961","DOIUrl":"10.1016/j.est.2025.118961","url":null,"abstract":"<div><div>This paper aims to investigate the environmental impact of the production of bio-based phase change materials to contribute to the advancement and development of energy systems with a low environmental impact. It uses relative contribution, local, and global sensitivity analysis to target critical inputs for decision-making. The materials selected are jojoba oil, coconut oil, lauric, myristic, and stearic acids, xylitol, and adipic acid, with melting temperatures varying from 14 °C to 152 °C. The methodology follows the ISO guidelines for the life cycle assessment of all materials, for which the boundary system has considered three unit processes: farming, transportation, and manufacturing. It was found that to produce 1 kg of adipic acid, the global warming potential is 13 kg CO<sub>2 eq</sub>, while for jojoba oil, it is only 0.96 kg CO<sub>2 eq</sub>. For phase change materials like jojoba oil, coconut oil, myristic acid, and stearic acid, farming dominates the global warming potential, while manufacturing takes over the major share of this environmental indicator for the remaining materials. The local sensitivity analysis results show that jojoba oil's global warming potential can increase by nearly 38 % if irrigation water reaches its upper bound. On the other hand, global sensitivity analysis shows the Sobol index by which inputs contribute to output uncertainty. For instance, the jojoba oil global warming uncertainty could be affected by 60 % by irrigation water. Results show that the higher melting temperature phase change materials have a higher footprint than the lower melting temperature ones, except for coconut oil, as a consequence of more process inputs and production process complexity. Overall, relative contribution analysis helps locate critical unit processes and inputs, while local sensitivity analysis allows for identifying how critical input variation affects the targeted indicator, and the global sensitivity analysis is useful to understand the critical inputs in terms of uncertainty.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118961"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326532","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}
David Blanco , César Berna-Escriche , Yago Rivera , José Luis Muñoz-Cobo
{"title":"Decarbonizing energy end-uses in semi-isolated islands via renewable and nuclear integration: The Balearic Islands by 2040","authors":"David Blanco , César Berna-Escriche , Yago Rivera , José Luis Muñoz-Cobo","doi":"10.1016/j.est.2025.118866","DOIUrl":"10.1016/j.est.2025.118866","url":null,"abstract":"<div><div>The current study underscores the critical importance of transitioning to clean electricity generation to meet current global decarbonization targets, applying it to the case of the Balearic Archipelago. Therefore, an energy generation system designed with the objective of decarbonizing the Balearic economy by 2040 is proposed. The optimized system combines renewable energy sources, a Small Modular Reactor (SMR) subsystem, and electric grid integration between the archipelago islands with the Spanish mainland grid. The renewable generation comprises solar PV, wind, and biomass components. Additionally, there is a Vanadium Redox Flow Battery subsystem for system management, a system that is vital for coupling generation and demand. Moreover, the system integrates hydrogen as an alternative energy carrier for hard-to-abate applications, facilitating net-zero greenhouse gases across all energy-consuming sectors. Hydrogen production requires significant electrolyzer capacity and utilizes electricity surpluses and water supplies. Despite requiring significant investments in generation sources and storage infrastructure throughout its lifecycle, the system remains highly competitive while achieving a substantial level of decarbonization during its operational phase and maintaining this reduction throughout the entire system's lifecycle. The estimated levelized cost of electricity for the whole system is approximately 9 c€/kWh.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118866"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326570","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}
Aya Chelh, Boutaina Akenoun, Smahane Dahbi, Hamid Ez-Zahraouy
{"title":"Ab-initio investigation of the physical properties of LiBH3 perovskite for hydrogen storage applications","authors":"Aya Chelh, Boutaina Akenoun, Smahane Dahbi, Hamid Ez-Zahraouy","doi":"10.1016/j.est.2025.118927","DOIUrl":"10.1016/j.est.2025.118927","url":null,"abstract":"<div><div>In this paper, a comprehensive ab initio investigation of novel hydride perovskites LibO<span><math><msub><mrow></mrow><mrow><mn>3</mn><mo>−</mo><mi>x</mi></mrow></msub></math></span>H<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span> (x <span><math><mo>=</mo></math></span> 0, 1, 2, 3) was conducted using density functional theory. Their structural, mechanical, thermal, electronic, and optical properties were systematically explored, along with their hydrogen storage capacity and potential as efficient solid-state hydrogen storage materials. Following oxygen-to-hydrogen substitution, LiBH<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> is also examined under 5% and 10% tensile strain to enhance its hydrogen desorption behavior. The complete hydrogenated compound, LiBH<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>, exhibits a high gravimetric hydrogen storage capacity of 14.55 wt% and a desorption temperature of 362.10 K, which is higher than that of many conventional hydrides. However, this is achieved at the cost of thermal and mechanical stability. The application of strain effectively lowers the desorption temperature to 343.23 K at 5% strain and 299.93 K at 10% strain, enabling more practical hydrogen release. These findings highlight strain-engineered LiBH<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>-based perovskites as tunable, cost-effective materials for hydrogen storage and motivate future experimental validation for clean energy applications.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118927"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326071","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}
Xiansong Yuan , Yaxuan Wang , Junfu Li , Shaojie Yuan
{"title":"Exploring the electrochemical failure mechanism of lithium-ion batteries under salt spray condition","authors":"Xiansong Yuan , Yaxuan Wang , Junfu Li , Shaojie Yuan","doi":"10.1016/j.est.2025.118919","DOIUrl":"10.1016/j.est.2025.118919","url":null,"abstract":"<div><div>As the global shipping industry transitions to low-carbon operations, electric ships emerge as a key alternative to traditional fuel-powered vessels, with the performance stability and safety of lithium-ion batteries (LIBs)—their core energy storage units—directly determining ship power system reliability. However, salt spray in marine environments poses a severe threat to the long-term service performance of LIBs. This study investigates lithium iron phosphate (LFP) batteries under simulated marine conditions via accelerated salt spray tests, utilizing multi-scale material characterization techniques to systematically reveal LIB degradation mechanisms. Incremental capacity analysis (ICA), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) elucidates Cl<sup>−</sup> penetration pathways in LFP electrodes and their differential impacts on microstructural integrity. The findings reveal that Cl<sup>−</sup> penetration triggers complex internal reactions, causing electrode surface pitting, lattice contraction, and LiF interfacial layer formation, which lead to active material loss, lithium inventory depletion, and increased internal resistance. Furthermore, the evolution of key electrochemical parameters of an improved single particle model (SP+) confirm their correlation with salt spray-induced failure mechanisms and reveal multiple degradation pathways, including active material loss, interfacial reaction kinetic deterioration, and multi-stage ion transport limitations during liquid-phase diffusion.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"139 ","pages":"Article 118919"},"PeriodicalIF":8.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326074","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}