Electrochimica Acta最新文献

{"title":"Microstructural evolution-driven degradation of nickel-based SOFC anodes: Insights from mesoscale modeling","authors":"Mingyuan Sun ,&nbsp;Ang Li ,&nbsp;Yuxuan Fei ,&nbsp;Zhiyuan Chen ,&nbsp;Lei Zhu ,&nbsp;Zhen Huang","doi":"10.1016/j.electacta.2025.147454","DOIUrl":"10.1016/j.electacta.2025.147454","url":null,"abstract":"<div><div>Degradation mechanisms in nickel-based anode composites (Ni/YSZ and Ni/CGO) critically influence the electrochemical performance and durability of solid oxide fuel cells (SOFCs). Despite notable advances, the complex relationship between morphological evolution and long-term electrochemical degradation in nickel-based electrodes remains insufficiently clarified. This study introduces a novel mesoscale modeling framework that integrates phase-field modeling (PFM) and the lattice Boltzmann method (LBM) to quantitatively predict long-term performance evolution. The developed PFM elucidates compositional and microstructural evolution within the electrode, capturing intricate phase boundary dynamics. Concurrently, the LBM rigorously evaluates electrochemical reaction pathways and charge transfer resistances, offering a multi-physics perspective on performance degradation. The model is rigorously validated using the MAD (Median Absolute Deviation), with errors of only 1.8%, 2.43%, and 4.1% for the initial electrode structure, activation overpotential, and particle size growth, respectively. Through systematic parametric studies, this work quantifies the influences of initial particle size and volume fraction on the interplay between degradation and electrochemical performance. In the case of nickel-based electrodes, a higher volume fraction of the ion-conducting phase led to the maximum evaluation scores, reaching 47.8% and 44.2%, respectively. These findings establish a robust performance evaluation framework, providing critical insights into the synergistic effects of microstructural evolution on electrode durability and establishing a foundation for rational design of next-generation SOFC anodes.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"542 ","pages":"Article 147454"},"PeriodicalIF":5.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical corrosion behavior of welded joints with multi-metallographic structures in liquid film electrolytes","authors":"Zhendong Li, Zhongqiu Fu, Bohai Ji","doi":"10.1016/j.electacta.2025.147439","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.147439","url":null,"abstract":"Welded joints in steel structures demonstrate significant corrosion susceptibility in atmospheric environments due to their multi-metallographic structures. Current research predominantly focuses on the galvanic couple formed between the weld metal and base metal, yet critically neglects the effect of the heat-affected zone. Moreover, the electrochemical corrosion mechanisms under atmospheric liquid film electrolyte conditions remain insufficiently investigated. To elucidate the electrochemical corrosion characteristics of welded joints with multi-metallographic structures under liquid film electrolytes, we developed a three-electrode corrosion model incorporating mass transport and corrosion products. By implementing controlled variations in liquid film thickness and corrosion product porosity, the study examined the dynamic evolution of the electrolyte film and electrode surface reaction kinetics during corrosion processes. The results indicate that the corrosion process of the weld seam and base metal is always jointly controlled by electrode reactions and oxygen diffusion, while the heat-affected zone is co-regulated by liquid film thickness and corrosion product porosity. An increase in liquid film thickness and porosity can promote ion diffusion and reduce the potential difference, thereby decreasing the acidification difference between different metallurgical structures in the welded joint. As the porosity increases, the corrosion morphology of each metallurgical structure gradually becomes more uniform.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"89 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Mixed-Conducting Strategy Enabling Uniform Prelithiation of Silicon-Based Lithium-Ion Batteries","authors":"Jiale Li, Bo Peng, Hao Shen, Yaoyu Wang, Jun Liu, Kunhao Zhang, Feng Yu, Weizhai Bao","doi":"10.1016/j.electacta.2025.147442","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.147442","url":null,"abstract":"Prelithiation has been widely recognized as an effective strategy to mitigate the low initial Coulombic Efficiency of silicon-carbon (Si-C) anodes in lithium-ion batteries. Conventional prelithiation methods suffer from non-uniform lithium distribution and unstable formation of solid electrolyte interphase (SEI). To address these issues, this work introduced a mixed electron-ion conductor (MEIC) as a multifunctional additive to establish dual conductive pathways enabling concurrent electron and ion transport. This strategy enhances lithium-ion diffusion kinetics and charge transfer efficiency through a hybrid electron-ion conductive network. Physical characterizations reveal that the mixed-conducting strategy enables uniform prelithiation and promotes the formation of a stronger SEI. Electrochemical testing of full cells demonstrates that MEIC modified electrodes achieve an initial Coulombic Efficiency of 94.5% and a capacity retention of 66.1% after 500 cycles at 1 C, outperforming traditional contact prelithiation methods by 22%. Even at a high rate of 2.0 C, the capacity of MEIC-based electrodes is improved compared to conventional counterparts. Notably, this strategy is fully compatible with roll-to-roll manufacturing processes, offering a scalable pathway for high-energy-density Si-C anodes in practical applications.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"69 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of energy storage performance and cycling stability of electrochemically synthesized PANI–ZnFe2O4 electrodes","authors":"Imran Khan ,&nbsp;Anwar ul Haq Ali Shah ,&nbsp;Salma Bilal ,&nbsp;Philipp Röse","doi":"10.1016/j.electacta.2025.147440","DOIUrl":"10.1016/j.electacta.2025.147440","url":null,"abstract":"<div><div>Conducting polymer-metal oxide hybrids are promising electrode materials for supercapacitors, yet achieving a balance between high capacitance and long-term stability remains challenging. In this work, polyaniline (PANI) - zinc ferrite (ZnFe₂O₄) composites were synthesized by in situ electrochemical polymerization of aniline with controlled deposition duration for ZnFe₂O₄-nanoparticle incorporation. Structural and spectroscopic characterization confirmed uniform dispersion of ZnFe₂O₄ within the polymer matrix and the formation of fibrous nanostructures. Electrochemical analysis revealed a progressive enhancement of redox activity and charge storage with increasing ZnFe₂O₄ content. The optimized composite exhibited a specific capacitance of up to 1402 F g⁻¹ at 1 A g⁻¹, together with an energy density of 141.9 Wh kg⁻¹ and a power density of 404.9 W kg⁻¹. When assembled into a symmetric supercapacitor, the PANI-zinc ferrite composite retained 97.6 % of its initial capacitance after 10,000 charge–discharge cycles. Electrochemical impedance spectroscopy further indicated that structural degradation under accelerated aging is primarily associated with particle and polymer chain cracking/breaking, leading to increased mass transport resistance, thereby reducing the energy storage capability.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"542 ","pages":"Article 147440"},"PeriodicalIF":5.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-situ polymerization polyaniline-coating of V10O24·nH2O (VOH) for enhanced zinc-ion battery performance","authors":"Menglong Zhu ,&nbsp;Xiaoyan Gao ,&nbsp;Jiacheng Huang ,&nbsp;Ruiwen Tang ,&nbsp;Zhaoyang Liu ,&nbsp;Xiaoran Guo ,&nbsp;Xiaojie Zhang","doi":"10.1016/j.electacta.2025.147438","DOIUrl":"10.1016/j.electacta.2025.147438","url":null,"abstract":"<div><div>Recognized for their safety and low cost, aqueous zinc-ion batteries (AZIBs) hold significant promise for large-scale energy storage fields. Layered vanadium-based compounds offer attractive AZIBs cathodes with open crystal structures, high theoretical specific capacity, and resource abundance. However, they often suffer from vanadium dissolution and poor cycling stability caused by corrosion from free water molecules. To address these issues, polyaniline-coated V₁₀O₂₄·nH₂O (VOH@PANI) was synthesized via in-situ polymerization strategy. The conductive PANI coating not only enhances the electrical conductivity of composite, but also induces an amorphous structure transformation, thereby improving the rate capability. Furthermore, the polyaniline coating increases the material's hydrophobicity, effectively suppressing vanadium dissolution and enhancing electrochemical stability. Benefiting from this modification, the fabricated VOH@PANI-300 electrode delivers a specific capacity of 424.09 mAh g⁻¹ at 0.2 A g⁻¹ and maintains 314.51 mAh g⁻¹ after 1000 cycles at 5 A g⁻¹, corresponding to a capacity retention of 89.70 %. These results markedly surpass the uncoated VOH electrode (348.12 mAh g⁻¹ at 0.2 A g⁻¹, 39.62 % retention after 1000 cycles at 5 A g⁻¹. This work establishes a viable approach for preparing high-performance vanadium-based cathode materials of AZIBs.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"542 ","pages":"Article 147438"},"PeriodicalIF":5.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Collaboratively adjusting the electron structure of N/Cr dual-doping CoSe2 for boosting catalytic effect of coated separators in Li-S batteries","authors":"Liping Chen, XiaoBo Wang, Yujie Qin, Siru Liu, Kaiyu Xue, Guannan Zu, Yong Li, Juan Wang, Min Fang","doi":"10.1016/j.electacta.2025.147437","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.147437","url":null,"abstract":"Transition metal compounds are a kind of catalysts to coat separators for solving the slow reaction kinetics and alleviating the shuttle effect of lithium sulfur (Li-S) batteries. Up to now, doping modification for transition metal compounds have been extensively studied to enhance their catalytic properties. Nevertheless, dual-doping is rarely studied despite of largely study of single-doping. Herein, CoSe₂ is doped with N/Cr with different electronegativity to enhance intrinsic catalytic activity and enrich active sites. After dual doping, the electron structure of N/Cr-CoSe₂ is regulated with charge redistribution and adjusted <em>d</em> band center. This enables N/Cr-CoSe₂ to achieve the best adsorption effect and catalytic capacity, benefitting from multiple interactions with enriched adsorption sites and elongated S-S bonds of adsorbed Li₂S₄. As a consequence, the Li-S batteries equipped with N/Cr-CoSe₂ coated separators deliver the highest discharge capacity for the best reaction kinetics, in comparison to that of Cr doped CoSe₂ and undoped one. This work could provide some reference for improving their catalytic effect of transition metal compounds by dual-doping modification.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"7 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance AuPd/MWCNTs/Ni-ZIF-8 Nanocomposite: An advanced electrochemical sensing platform for chlorogenic acid detection","authors":"Ying Zhou ,&nbsp;Xinyan Ye ,&nbsp;Jinai Bian ,&nbsp;Guomei Zhang ,&nbsp;Yan Zhang ,&nbsp;Caihong Zhang ,&nbsp;Shaomin Shuang ,&nbsp;Hong Cui","doi":"10.1016/j.electacta.2025.147433","DOIUrl":"10.1016/j.electacta.2025.147433","url":null,"abstract":"<div><div>As a potent antioxidant molecule, chlorogenic acid exhibits various physiological activities, and its detection is of great value. In this study, nickel-zinc-based zeolitic imidazolate framework (Ni-ZIF-8) was successfully prepared via a room-temperature stirring method. Au-Pd alloy was synthesized on the surface of multi-walled carbon nanotubes by an adsorption-reduction method (AuPd/MWCNTs), and the AuPd/MWCNTs/Ni-ZIF-8 composite was further synthesized under ultrasonic treatment. Using this composite as the substrate material, an electrochemical sensor for the detection of chlorogenic acid was constructed. By integrating the molecular recognition capability of Ni-ZIF-8, the highly conductive network of MWCNTs, and the synergistic catalytic effect of AuPd alloy nanoparticles, the fabricated sensor enabled efficient detection of CGA. The sensor exhibited excellent linear responses across a concentration spectrum of 0.1-1 μM and 1-30 μM, and a low detection limit (0.033 μM). AuPd/MWCNTs/Ni-ZIF-8/GCE also showed exceptional selectivity, reproducibility, and stability for the CGA detection, and was successfully applied to the analysis of real samples.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"542 ","pages":"Article 147433"},"PeriodicalIF":5.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145093603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Amine oxidase@Li-CaCu2O3 based electrochemical biosensor for the detection of tyramine in marine fishes and crab","authors":"Ganesan Veerapandi ,&nbsp;Chelladurai Arul ,&nbsp;Poopathi Lavanya ,&nbsp;Sudeera Randiligama ,&nbsp;Nanda Gunawardhana ,&nbsp;Migara Karunarathne ,&nbsp;Chinnathambi Sekar","doi":"10.1016/j.electacta.2025.147436","DOIUrl":"10.1016/j.electacta.2025.147436","url":null,"abstract":"<div><div>Quality analyses of seafood ensure consumer safety, maintain public health, and support the sustainability of the fishing industry. As seafood is a perishable commodity, it is particularly susceptible to contamination by pathogens, biotoxins, and spoilage. Elevated levels of Tyramine (TA) in seafood indicate its quality deterioration through spoilage due to ageing, improper storage or poor handling. Here, we report a novel enzymatic biosensor integrating Amine oxidase (AoX) enzyme with Li-doped CaCu₂O₃ nanoflakes for the quantification of TA in various marine fish species. The AoX enzyme has been covalently immobilized onto the Li-CaCu₂O₃/glassy carbon electrode (GCE) via the cross-linker glutaraldehyde. The AoX@Li-CaCu₂O₃/GCE exhibited excellent electrocatalytic activity and high sensitivity towards the TA detection. High specificity of the AoX enzyme, flake-like morphology, mixed-valence copper centres (Cu²⁺/Cu¹⁺) and improved electroactive surface area of Li-CaCu₂O₃ provide abundant active sites, resulting in an improved redox behaviour with higher current response. Further, the sensor efficiently detected TA over a wide concentration range of 0.15 to 250 μM, with the lowest detection limit and limit of quantification of 0.11 μM and 0.37 μM respectively. In addition, the real-time applicability of the AoX@Li-CaCu₂O₃/GCE has been validated by quantifying TA in marine fishes such as trevally, silver, lady, mullet, anchovy, pipe, cobia fish and sea crab. The obtained results have been cross-validated by high pressure liquid chromatographic analysis. Further, the sensor showed acceptable relative standard deviation (1.02-1.96%) and recovery values (98.1 – 101.5%). In conclusion, the fabricated AoX@Li-CaCu₂O₃/GCE could be useful for rapid and precise sea food analyses.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"542 ","pages":"Article 147436"},"PeriodicalIF":5.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FePO4-Zn/Pt hybrid battery system for the electrochemical extraction of Li+ from salt lake brine with high Mg2+ concentrations","authors":"Qian Zhang ,&nbsp;Xinwen Li ,&nbsp;Kang Chen ,&nbsp;Ying Hu ,&nbsp;Rongmei Liu ,&nbsp;Guixiang Qian ,&nbsp;Zhongliang Tian ,&nbsp;Chao Yang","doi":"10.1016/j.electacta.2025.147223","DOIUrl":"10.1016/j.electacta.2025.147223","url":null,"abstract":"<div><div>This study presents a FePO₄-Zn/Pt hybrid power battery system designed for lithium extraction from salt lake brines. Initially, the FePO₄-Zn battery is utilized for lithium intercalation to form LiFePO₄, which is subsequently reassembled into a LiFePO₄-Pt battery for lithium deintercalation. As a result, a Li⁺-rich aqueous solution, free from interfering metal cations, is obtained. The system eliminates the need for ion-exchange membranes, as the Pt electrode remains separated from the brine, thereby preventing contamination by impurity cations. When applied to a brine containing 0.25 g/L Li⁺ and 73 g/L Mg²⁺, followed by desorption in a solution of 0.25 g/L Li⁺, only a minimal amount of Mg²⁺was transferred to the lithium chloride solution after two cycles, achieving effective lithium extraction and enrichment with an efficiency of 80.6 %.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"542 ","pages":"Article 147223"},"PeriodicalIF":5.6,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145088923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic understanding of ultrafast anomalous lithium-ion transport in supramolecular porous crystals from fused macrocycle cages","authors":"Jacob F.N. Dethan ,&nbsp;Kaiyang Wang ,&nbsp;Liming Zhao ,&nbsp;Jingjie Yeo","doi":"10.1016/j.electacta.2025.147425","DOIUrl":"10.1016/j.electacta.2025.147425","url":null,"abstract":"<div><div>Fused macrocyclic cages have demonstrated excellent ion transport capabilities, yet the detailed mechanisms underlying their ion transport remain poorly understood, primarily due to the lack of experimental techniques capable of characterizing and visualizing processes at the molecular scale. In this study, we employ reactive molecular dynamics simulations to investigate the lithium-ion transport properties of a supramolecular porous crystal recently synthesized from fused macrocyclic cages arranged around a central prismatic core. Our simulations reveal that this crystal exhibits anomalous, non-Fickian subdiffusive ion transport behavior, which arises from the periodic trapping and release of Li⁺ ions at specific binding sites. Increasing the Li⁺ concentration initially enhances ionic conductivity, but conductivity declines once a critical concentration threshold is surpassed. Likewise, Li⁺ conductivity increases with temperature before declining at higher temperatures due to significant structural disturbances within the nanochannel. When methanol is introduced as a solvent, Li⁺ conductivity decreases because of ion clustering. Therefore, our findings indicate that the fused macrocyclic cage structure operates most effectively as a solid electrolyte in the absence of added solvents. Additionally, we observe that the diffusion coefficient diminishes as the thickness of the 1D nanochannel increases. These results provide important mechanistic insights for the design of all-solid-state lithium-ion batteries with ultrafast lithium transport characteristics.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"542 ","pages":"Article 147425"},"PeriodicalIF":5.6,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145088924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}