Electrochimica Acta最新文献

{"title":"Cation-Anion Synergy: CsF Additive for Dendrite Suppression and Interface Reinforcement in Lithium Metal Batteries","authors":"Hao Deng, Wanjie Xu, Xinle Li, Pengfei Liu, Ding Tang, Sen Huang","doi":"10.1016/j.electacta.2025.146312","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146312","url":null,"abstract":"The extremely high theoretical capacity of lithium metal anode positions it as an ideal candidate for next-generation high-energy-density energy storage systems. However, its practical application is hindered by uncontrollable lithium dendrite growth and the instability of the solid electrolyte interphase (SEI) layer. This study proposes an electrolyte modification strategy based on the synergetic effect of Cs⁺ and F^–, employing low-concentration CsF additives to simultaneously achieve uniform lithium deposition and optimized the composition of SEI. The results reveal that Cs⁺ preferentially adsorbs at the tip regions of the lithium metal surface via an electrostatic shielding mechanism, forcing Li⁺ to nucleate uniformly on flat regions, thereby effectively suppressing dendrite formation. Meanwhile, F^– promotes the formation of LiF within the SEI layer, significantly enhancing interfacial stability. Electrochemical tests revealed that the addition of 0.05 M CsF enhanced the average Coulombic efficiency of Li||Cu cells from 58.9% to 70.9% after 100 cycles at 0.5 mA/cm², while significantly extending the cycling lifespan of Li||Li symmetric cells from 100 h to over 250 h under 1 mA/cm² current density. In NCM622||Li cells, the capacity retention after 100 cycles at 1C improves from 38.6% to 80.6%. X-ray photoelectron spectroscopy and scanning electron microscopy characterization confirm that the LiF-enriched SEI layer induced by CsF effectively reduces interfacial impedance and inhibits dead lithium accumulation. This work provides innovative insights into developing high-performance lithium metal batteries through cation-anion synergetic regulation of electrolyte interfaces.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"42 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872474","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":"TiO2/CuO photoelectrocatalysts as enhanced photoanodes for oxygen evolution reaction","authors":"Miguel Ángel Ortiz, Carlos Jiménez, Rafael Camarillo, Jesusa Rincón, Fabiola Martínez","doi":"10.1016/j.electacta.2025.146324","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146324","url":null,"abstract":"This work addresses the synthesis of effective photoelectrocatalysts to be used as anodic material for the oxygen evolution reaction (OER) consisting of TiO₂ modified with Cu oxides by one pot supercritical fluid synthesis at Cu concentrations from 3 to 13 %. The catalysts obtained involve TiO₂ anatase phase nanoparticles combined with Cu oxides (mainly CuO). The combined TiO₂-Cu materials with higher Cu concentration show lower band gap energies. Better charge transfer capability has been observed in TiO₂-Cu catalysts with intermediate Cu concentrations (6.5 and 8 %) in the absence of light. LSV have been used to test the activity of these catalysts in OER. TiO₂/Cu 6.5% catalyst have exhibited the highest activity towards OER, as well as the highest improvement under simulated sunlight illumination. This may be attributed to an adequate combination in TiO₂/Cu 6.5% of low band gap energy and low charge transfer resistance, that seem to promote the synergy of the electro- and photocatalytic roles of the catalyst to favour the oxidation of water to oxygen. Similar or even better OER activity has been attained with this anodic material compared to that reported in several works in the literature with more complex anodes.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"24 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872468","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":"On the stabilizing effect of Zr doping in LiMn1.5Fe0.5O4 spinel cathodes for Lithium-ion Batteries","authors":"M. Canini, M. Coduri, U. Anselmi-Tamburini, D. Callegari, E. Quartarone","doi":"10.1016/j.electacta.2025.146325","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146325","url":null,"abstract":"Spinel structures are promising cathodes for Lithium-ion batteries due to good functional performance and sustainability. LiMn₂O₄ is the most investigated composition, despite some drawbacks: i) Jahn-Teller distortion involving Mn (III), and ii) partial dissolution of Mn (II) upon cycling. Here, we report on spinel compositions (LiM_xMn_1-xO₄) where Mn is partially substituted by Fe (III) to decrease the Mn (III) amount. This system was doped with small amounts (<0.05 at.%) of Zr (IV) and decorated with ZrO₂ nanoparticles with a synergistic role: i) to replace electrochemically active cations with pillar ions and stabilize the spinel structure during cycling; ii) to protect the electrode/electrolyte interface and reduce the TMs dissolution upon cycling. Li(Mn_1.5-xFe_0.5 Zr_x)O₄ (LMFZ) was synthesized through solid-state reaction and characterized by multi-technique approach. The best composition (LMFZ2) exhibited very high structural stability with no change in lattice parameters and very low Mn (II) dissolution rate upon prolonged cycling at 0.5C. When cycled at 0.08C at 2.3-4.3V, this cathode delivered stable specific capacity exceeding 140 mAh g^-1. Good capacity retention > 87% was determined after 160 cycles at both low and higher C rates (namely 0.5C and 2C). Superior electrochemical properties were observed for the Zr-doped cathode with respect to LiMn_1.5Fe_0.5O₄.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"17 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872473","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":"Hollow porous AuNPs decorated on Pty and MB-coated rGO-COOH for a highly sensitive label-free electrochemical cystatin-C immunosensor for chronic kidney disease assessment","authors":"Supapich Romportong, Suntisak Khumngern, Natha Nontipichet, Thanawath Tuntiwongmetee, Panote Thavarungkul, Proespichaya Kanatharana, Pornpen Sangthawan, Apon Numnuam","doi":"10.1016/j.electacta.2025.146304","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146304","url":null,"abstract":"A label-free electrochemical immunosensor for cystatin-C (Cys-C) was developed by integrating hollow porous gold nanoparticles (HPAuNPs), polytyramine (Pty), methylene blue (MB), and carboxylated reduced graphene oxide (rGO-COOH) to modify a screen-printed carbon electrode (SPCE). rGO-COOH was employed to support the MB redox indicator and enhance the conductivity and surface area of the electrode. Pty was employed to prevent material detachment from the surface electrode and to support the attachment of HPAuNPs. The outstanding conductivity and extensive surface area of HPAuNPs improved immunosensor performance. Differential pulse voltammetry was used to determine Cys-C by measuring the oxidation current change of MB resulting from the immunoreaction between Cys-C and cystatin-C antibody (anti-Cys-C). The immunosensor for Cys-C detection exhibited a linear response range from 1.0 ×<span><span style=\"\"><math><mspace is=\"true\" width=\"0.33em\"></mspace></math></span><span style=\"font-size: 90%; display: inline-block;\" tabindex=\"0\"><svg focusable=\"false\" height=\"0.281ex\" role=\"img\" style=\"vertical-align: -0.141ex;\" viewbox=\"0 -60.6 330 121.2\" width=\"0.766ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"><g is=\"true\"></g></g></svg></span><script type=\"math/mml\"><math><mspace width=\"0.33em\" is=\"true\"></mspace></math></script></span>10⁻⁸ to 1.0 × 10¹ ng mL⁻¹, with a limit of detection of 3.67 ×<span><span style=\"\"><math><mspace is=\"true\" width=\"0.33em\"></mspace></math></span><span style=\"font-size: 90%; display: inline-block;\" tabindex=\"0\"><svg focusable=\"false\" height=\"0.281ex\" role=\"img\" style=\"vertical-align: -0.141ex;\" viewbox=\"0 -60.6 330 121.2\" width=\"0.766ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"><g is=\"true\"></g></g></svg></span><script type=\"math/mml\"><math><mspace width=\"0.33em\" is=\"true\"></mspace></math></script></span>10⁻⁹ ng mL⁻¹. Additionally, good reproducibility, storage stability, reusability, and excellent selectivity were obtained. The proposed label-free immunosensor for detecting Cys-C in human plasma shows results consistent with immunoturbidimetric assay (<em>P&gt;</em>0.05), indicating its reliability and accuracy.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"1 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872470","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 Chiral Ni(II) Complex Immobilized on Carboblack C as a Readily Available and Effective Enantioselective Voltammetric Sensor for Recognition of Atenolol Enantiomers in Real Samples","authors":"Rufina A. Zilberg, Yulia B. Teres, Elena O. Bulysheva, Pavel Yu. Ivanov, Ivan V. Vakulin, Maria V. Panova, Michael G. Medvedev, Mikhail N. Khrizanforov, Victor I. Maleev, Vladimir A. Larionov","doi":"10.1016/j.electacta.2025.146309","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146309","url":null,"abstract":"The search of a chiral selector is an essential aspect in the development of enantioselective voltammetric sensors, as stereoselectivity is achieved through the chiral surface of the electrode. This paper introduces the first application of a readily accessible and robust chiral Belokon’s Ni(II) complex as an efficient chiral selector. This complex, derived from a Schiff base of glycine and (<em>S</em>)-2-(<em>N</em>-benzylprolyl)aminobenzophenone, is immobilized onto a graphitized Carboblack C paste electrode, enabling efficient recognition and determination of atenolol (Atn) enantiomers. The characteristics of the developed electrochemical analytical sensor were evaluated, revealing an effective electrode surface area (<em>A</em>) of 7.51±0.53 mm² and a charge transfer resistance (<em>R</em>_et) of 11.50±0.09 kΩ. A linear relationship was established between the Atn oxidation peak current and its concentration in solution, maintained across a range of 100 to 1000 µM. The detection limits for (<em>S</em>)-Atn were found to be 2.76 (LOD) and 9.23 µM for the lower limit of detectable concentrations (LOQ), while for (<em>R</em>)-Atn, these values were 4.51 and 15 µM, respectively. Notably, the sensor exhibited greater sensitivity to (<em>S</em>)-Atn, with a potential difference (ΔE_p) of 20 mV and a current ratio (<em>i_S</em>/<em>i_R</em>) of 1.60. The developed paste electrode demonstrates the ability to selectively recognize Atn enantiomers in model solutions, biological fluids, and pharmaceutical samples. Furthermore, employing principal component analysis (PCA) and independent class analogy modeling methods, the study presents a potential approach for identifying pharmaceutical formulations of Atn by their manufacturers.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"14 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872471","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":"Corrosion and Solid-State Properties of Nb2O5 coating deposited on Ti-6Al-4V Alloy via DC Reactive Sputtering","authors":"João Pedro Lopes do Nascimento, Murilo Oliveira Alves Ferreira, Rogério Valentim Gelamo, Rui Miguel da Silva Sampaio, Natália Bueno Leite Slade, Jéferson Aparecido Moreto, João Carlos Salvador Fernandes","doi":"10.1016/j.electacta.2025.146323","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146323","url":null,"abstract":"This study investigates the surface modification of Ti-6Al-4V alloy substrates via Nb₂O₅ coatings deposited through reactive sputtering. The solid-state properties and corrosion behaviour of the Nb₂O₅ coatings were analysed using electrochemical techniques and optical ellipsometry. The results demonstrate a significant enhancement in the corrosion resistance of the Ti-6Al-4V/Nb₂O₅ system compared to the uncoated alloy. The Nb₂O₅ thin film exhibits n-type semiconducting behaviour with a donor concentration of approximately 10¹⁶ cm⁻³. Photoelectrochemical studies revealed energy band gaps of 3.39 eV for Ti-6Al-4V and 3.27 eV for Ti-6Al-4V/Nb₂O₅ and a lower Urbach energy (0.44 eV) for the coated system compared to the substrate (0.68 eV), indicating that the coatings produced via reactive sputtering effectively reduced the energy states linked to defects and imperfections, acting as a passivating layer for the Ti-6Al-4V surface and enhancing its corrosion resistance. These findings establish a clear relationship between the solid-state properties of the Nb₂O₅ coating and its ability to enhance the corrosion resistance of the Ti-6Al-4V alloy.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"22 1","pages":"146323"},"PeriodicalIF":6.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875904","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":"Unraveling the surface kinetics of Co:BiVO4/CoOx photoanodes for photoelectrochemical water oxidation","authors":"Liao Yijun, Yulan Zhou, Side Fu, Huang Jiaxun, Wu Leyi, Xuejun Xu, Manfang Mai, Xinzhou Ma","doi":"10.1016/j.electacta.2025.146310","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146310","url":null,"abstract":"BiVO₄ is one of the most promising photoanodes for photoelectrochemical water splitting but their performance is still limited by charge recombination and sluggish surface kinetics. To deal with these limitations, various Co:BiVO₄/CoO_x photoanodes were prepared in this work. Photocurrent density was increased by a factor of 2-3 by optimizing Co-doping. To find out the enhance mechanism, photoinduced absorption spectroscopy (PIAS) was employed to establish the relationship between photocurrent density and concentration of the photogenerated holes on surface. Meanwhile, intensity-modulated photocurrent spectroscopy (IMPS) was applied to measure the rate constant of charge transfer and surface recombination. The improved PEC performance was attributed to the synergy effect of Co-doping that increased the bulk charge separation efficiency and significantly suppressed surface recombination by two orders of magnitude at high potentials. More importantly, our investigation reveals that not all the surface holes could participate in water oxidation reaction and the utilization proportion of them was strongly dependent on Co-doping and potential. Not more than 12 % of the photogenerated holes were used for water oxidation on the pristine BiVO₄ surface over a wide potential range. In contrast, as high as 80 % of the photogenerated holes participated in water oxidation with the assistance of the CoO_x nano-catalysts. It is the critical enhancement mechanism of the Co:BiVO₄/CoO_x photoanodes for photoelectrochemical water oxidation.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"73 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872469","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":"Exploring environmentally friendly localised corrosion inhibitors through local electrochemical measurements using multielectrode arrays","authors":"Medhani Pathirana, Majid Laleh, Anthony Somers, Bruce Hinton, Glen B. Deacon, Peter C. Junk, Mike Yongjun Tan","doi":"10.1016/j.electacta.2025.146307","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146307","url":null,"abstract":"Localised corrosion is the result of complex heterogeneous electrochemical processes occurring on metal surfaces. Localised corrosion control is one of the most difficult issues in corrosion science and engineering. This study reports a new approach to exploring effective and environmentally friendly localised corrosion inhibitors through local electrochemical measurements using multielectrode array probes. Local galvanic current, local polarisation, and local electrochemical impedance spectroscopy (EIS) measurements were performed on an electrode array probe exposed to waterline corrosion conditions, with and without the presence of rare earth metal (REM) inhibitors that are known to be effective for inhibiting general corrosion. The results revealed significant differences in the behaviour of two REM inhibitors, with La(4OHcin)₃.5H₂O exacerbating localised corrosion by generating intense anodic sites with high local corrosion current densities, while [Y(mbp)₃.H₂O] showing the ability of inhibiting localised corrosion. Such localised corrosion inhibition ability by [Y(mbp)₃.H₂O] was found to be associated with the formation of an inhomogeneous surface film that allows the existence of minor anodes randomly distributing over the surface, leading to low anodic current densities and insignificant general corrosion rather than severe localised corrosion. These results demonstrate a new approach to discovering localised corrosion inhibitors through local electrochemical measurements using electrode arrays.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"37 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867079","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":"Composite polymer electrolytes containing Co(NO3)2 can construct Li3N-rich interfacial layers in lithium-metal batteries","authors":"Hui Li, Hongfang Jiu, Lixin Zhang, Jinfeng Ma, Qian Xu, Yahui Wang, Xintong Chai, Kai Chen, Yunkai Zhang, Fan Wu","doi":"10.1016/j.electacta.2025.146305","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146305","url":null,"abstract":"Lithium metal batteries (LMBs) hold significant promise for energy storage applications, yet they are hindered by low ionic conductivity and severe interfacial issues with the electrolyte. In this study, we developed a Co(NO₃)₂@CPEs system to address these challenges. By incorporating Co(NO₃)₂ additives and LLZTO nanoparticles into the PEO matrix, we aimed to reduce PEO crystallization and enhance Li⁺ transport. Additionally, this approach facilitated the formation of a Li3N-rich solid electrolyte interphase (SEI) layer. The study demonstrate that the inclusion of Co(NO₃)₂ promotes the generation of more Li₃N, LiF, and Li₂Co. These inorganic components significantly improve Li⁺ transport and help prevent the uneven deposition of lithium metal. Co(NO₃)₂@CPEs has an ionic conductivity of 4.96 × 10^-4 S·cm^-2 at 60°C (ionic conductivity of 2.4 × 10^-5 S·cm^-2 at 30°C), a Li⁺ migration number of 0.41, and an electrochemical window of 4.5 V. In addition, the lithium-symmetric battery can be stably cycled for 800 h at a current density of 0.2 mA·cm^-2. The lithium metal battery with lithium iron phosphate (LiFePO₄) as the cathode, on the other hand, has good multiplication capability and cycling stability, in which it can be cycled for 200 revolutions at 0.5 C and has an initial specific capacity of 148.08 mAh·g^-1.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"23 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867081","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":"Corrosion Behavior of Friction Extruded Magnesium Alloys: Grain Refinement and Particle Fragmentation Effect","authors":"A. Sharma, V.K. Beura, V.V. Joshi, K. Solanki","doi":"10.1016/j.electacta.2025.146306","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146306","url":null,"abstract":"The enhancement of corrosion resistance in conventional magnesium alloys across a spectrum of environmental conditions, from alkaline to acidic regimes, remains a pivotal requirement for their widespread industrial adoption. This study investigates the impact of Friction Extrusion (FE) on microstructural refinement and its consequent influence on the corrosion behavior of cast Mg and Mg-3Si alloys. FE treatment effectively refined the magnesium microstructure by diminishing grain size and eliminating microstructural twins. Additionally, it homogenized the distribution and fragmented the cathodic Mg₂Si particles in the Mg-3Si alloy. Both grain refinement and particle fragmentation markedly influenced the overall corrosion response, evident from the heightened cathodic kinetics observed in FE-processed samples. Time-resolved measurements of Mg²⁺ dissolution current, coupled with potentiodynamic polarization analyses, demonstrated an increased level of cathodically induced anodic dissolution in FE-processed Mg compared to the FE-treated Mg-3Si alloy. These experimental findings offer novel insights into the fundamental mechanisms governing corrosion resistance in magnesium alloys, underscoring the critical roles of solid-state processing techniques and initial alloy compositions in determining their corrosion behavior.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"7 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867200","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}