Electrochimica Acta最新文献_第6页

Citric acid as electrolyte additive in aqueous magnesium-air battery used in Antarctic climate 柠檬酸作为电解液添加剂用于南极气候条件下的镁-空气水电池

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-14 DOI: 10.1016/j.electacta.2025.146689

Iliyan Popov , Boris Shirov , Temenuzhka Spasova , Yovka Milusheva , Adlin Dancheva , Reneta Boukoureshtlieva

{"title":"Citric acid as electrolyte additive in aqueous magnesium-air battery used in Antarctic climate","authors":"Iliyan Popov , Boris Shirov , Temenuzhka Spasova , Yovka Milusheva , Adlin Dancheva , Reneta Boukoureshtlieva","doi":"10.1016/j.electacta.2025.146689","DOIUrl":"10.1016/j.electacta.2025.146689","url":null,"abstract":"<div><div>The Magnesium-Air battery is a highly attractive energy source due to its high specific energy, low cost, and potential for rapid mechanical recharging. This study explores the use of citric acid as an additive to saline electrolytes, including seawater, to enhance the performance of the magnesium-air electrochemical system under polar climate conditions.</div><div>The optimized electrolyte composition, containing 10 g/dm³ of citric acid, demonstrated a balance between moderate corrosion rates and high system stability. Low-temperature studies revealed that the citric acid-modified electrolyte maintained superior performance compared to the control, even at sub-zero temperatures, due to improved ionic conductivity and reduced freezing effects. This behavior highlights the additive's effectiveness in enabling continuous operation under extreme environmental conditions. Additionally, while not the main focus, it was observed that citric acid improved the performance of the gas diffusion electrode, further enhancing the overall system's efficiency.</div><div>A magnesium-air battery incorporating citric acid as an additive powered a weather station at the Bulgarian Antarctic Station on Livingstone Island from December 1, 2022, to January 31, 2023. The system operated reliably in the harsh polar environment, maintaining stable cell voltages and consistent operation at temperatures between +1 °C and +11 °C. These results demonstrate the potential of citric acid-enhanced magnesium-air batteries for remote and off-grid applications in extreme environments.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"535 ","pages":"Article 146689"},"PeriodicalIF":5.5,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281058","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}

引用次数: 0

High-energy density solid-state biredox energy storage device based on poly(ionic liquid)/ionic liquid redox electrolytes 基于聚（离子液体）/离子液体氧化还原电解质的高能密度固态双氧化还原储能装置

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-14 DOI: 10.1016/j.electacta.2025.146714

Pedro S.C. de Oliveira , Luana S. de Oliveira , Gabriel C. de Assis , Glaura G. Silva , Paulo F.R. Ortega , João Paulo C. Trigueiro , Rodrigo L. Lavall

{"title":"High-energy density solid-state biredox energy storage device based on poly(ionic liquid)/ionic liquid redox electrolytes","authors":"Pedro S.C. de Oliveira , Luana S. de Oliveira , Gabriel C. de Assis , Glaura G. Silva , Paulo F.R. Ortega , João Paulo C. Trigueiro , Rodrigo L. Lavall","doi":"10.1016/j.electacta.2025.146714","DOIUrl":"10.1016/j.electacta.2025.146714","url":null,"abstract":"<div><div>In this work we have synthesized two redox-active poly(ionic liquid) / ionic liquid (PIL/IL) solid-state electrolytes based on the 2,2,6,6- tetramethylpiperidine-1-oxyl (TEMPO) and anthraquinone active molecules. We first characterized the two electrolytes to better understand their electrochemical behavior in a three-electrode configuration utilizing thermally reduced graphene oxide (Tr-GO) as working electrodes. An asymmetric supercapacitor (full cell) was then assembled with two Tr-GO electrodes and each redox-active PIL/IL electrolyte in one semi-cell, according to their redox active potentials: TEMPO as the catholyte and anthraquinone as the anolyte. The biredox solid-state supercapacitor showed excellent performance, with 81.4 F g<sup>-1</sup> capacitance at 0.25 A g<sup>-1</sup>, and an energy density of 59.9 W h kg<sup>-1</sup>, placing this device among the best in the literature for solid devices based on non-aqueous redox electrolytes, especially at low current densities. The supercapacitor retained 82.9% of its initial capacitance after 3000 charge/discharge cycles. This work presents a great advancement for the field of energy storage in applications that demand leakage-free high energy density devices.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"536 ","pages":"Article 146714"},"PeriodicalIF":5.5,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288510","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}

引用次数: 0

Silver decorated CuO-mesoporous graphitic carbon nitride as electrochemical sweat sensor for sensing ammonium ions: A membrane-free voltammetric approach 银修饰的介孔石墨氮化碳作为传感铵离子的电化学汗液传感器：一种无膜伏安方法

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-14 DOI: 10.1016/j.electacta.2025.146716

Nikita J. Patil , Ramakrishnan Vishnuraj , Ganesh Kumar Mani , Murali Rangarajan , Parthasarathy Srinivasan

{"title":"Silver decorated CuO-mesoporous graphitic carbon nitride as electrochemical sweat sensor for sensing ammonium ions: A membrane-free voltammetric approach","authors":"Nikita J. Patil , Ramakrishnan Vishnuraj , Ganesh Kumar Mani , Murali Rangarajan , Parthasarathy Srinivasan","doi":"10.1016/j.electacta.2025.146716","DOIUrl":"10.1016/j.electacta.2025.146716","url":null,"abstract":"<div><div>Ammonium ions (NH<sub>4</sub><sup>+</sup>) detection in sweat is important for monitoring metabolic health and hydration levels, offering insights into physiological conditions. This study reported a membrane-free electrochemical sweat sensor based on Ag-CuO-MGCN nanocomposite for detecting NH<sub>4</sub><sup>+</sup> ions in artificial sweat. The sensor exhibited three linear ranges, 0.01 to 0.05 µM,0.05 to 1 µM, and 1 to 2000 µM with the LOD of 3.82 nM, 63.06 nM, and 0.28 µM for the three concentration ranges, respectively. Real-time recovery studies were conducted using artificial sweat, revealing repeatable and reproducible characteristics. In the probing of NH<sub>4</sub><sup>+</sup>ions, it is witnessed that the CuO gets complexed to <span><math><msup><mrow><mo>[</mo><mrow><mi>C</mi><mi>u</mi><msub><mrow><mo>(</mo><mi>N</mi><msub><mi>H</mi><mn>3</mn></msub><mo>)</mo></mrow><mn>4</mn></msub></mrow><mo>]</mo></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></math></span><sup>,</sup> resulting in a decreasing trend in the reduction current. The introduction of Ag nanoparticles further supported this steep decrement in the reduction current, which correlates strongly and sensitively even to trace level detection of NH<sub>4</sub><sup>+</sup>ions. In addition, detecting NH<sub>4</sub><sup>+</sup>ions employing the paper screen printed electrode suggests the potentiality of the novel Ag-CuO-MGCN nanointerface in wearable sensing applications. Since the mechanism of NH<sub>4</sub><sup>+</sup>ions detection in the artificial sweat stands novel, this proof of concept study opens a way forward to advancing biosensing technologies for personalized health monitoring.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"535 ","pages":"Article 146716"},"PeriodicalIF":5.5,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288509","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}

引用次数: 0

High performance ZrO2 modified sulfonated poly (ether ether ketone) ion-exchange membrane for Iron-chromium redox flow battery application 高性能ZrO2改性磺化聚醚醚酮离子交换膜在铁铬氧化还原液流电池中的应用

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-14 DOI: 10.1016/j.electacta.2025.146695

Qianqian Zeng , Xi Liu , Yang Liu , Qinghao Feng , Zhaohao Wang , Guanchen Liu , Xiaoyin Xie , Zhihai Liu

{"title":"High performance ZrO2 modified sulfonated poly (ether ether ketone) ion-exchange membrane for Iron-chromium redox flow battery application","authors":"Qianqian Zeng , Xi Liu , Yang Liu , Qinghao Feng , Zhaohao Wang , Guanchen Liu , Xiaoyin Xie , Zhihai Liu","doi":"10.1016/j.electacta.2025.146695","DOIUrl":"10.1016/j.electacta.2025.146695","url":null,"abstract":"<div><div>A high-performance ion-exchange membrane (IEM) for an iron-chromium redox flow battery (ICRFB) was fabricated by zirconium dioxide (ZrO<sub>2</sub>) with sulfonated poly (ether ketone) (SPEEK, with a degree of sulfonation: 57 %). A series of physical and chemical tests such as water uptake (WU), swelling ratio (SR), ion exchange capacity (IEC), proton conductivity, strength characteristics and permeability were performed. Additionally, it was notable that the ZrO<sub>2</sub> -SPEEK (Zr/S) IEM with the optimal reference ratio (7.5 %) showed higher coulombic efficiency (CE:97.74 %) and energy efficiency (EE:82.85 %) at 100 mA·cm<sup>−2</sup> than Nafion-212 IEM (CE:96.7 %, EE:82.55 %) and SPEEK-57 IEM (CE:96.86 %, EE:76.84 %) in the ICRFB single-cell test. In the first cycle, the Zr/S-7.5 % IEM delivered a higher discharge capacity (708 mAh) than the Nafion-212 IEM (508 mAh) and SPEEK-57 IEM (373 mAh). Moreover, the composite membrane could maintain 1.2 V open-circuit voltage for 56.5 h in the self-discharge experiment, surpassing Nafion-212 IEM (4.617 h) and SPEEK-57 IEM (14.783 h).</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"535 ","pages":"Article 146695"},"PeriodicalIF":5.5,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279800","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}

引用次数: 0

Preparation and catalytic performance of CoCuOx-C electrodes in wastewater treatment CoCuOx-C电极的制备及其在废水处理中的催化性能

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-14 DOI: 10.1016/j.electacta.2025.146717

Lili Hu , Xiao Zhang , Xianheng Zhi , Yuling Zhang , Zhiqiang Zhang , Ming Li , Shuqin Wang

引用次数: 0

Modelling catalyst degradation in proton exchange membrane fuel cell: Heterogeneous Pt degradation and cell performance loss 模拟质子交换膜燃料电池催化剂降解：非均相铂降解和电池性能损失

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-14 DOI: 10.1016/j.electacta.2025.146702

Yubo Hu, Mingsheng Hao, Yinshi Li

{"title":"Modelling catalyst degradation in proton exchange membrane fuel cell: Heterogeneous Pt degradation and cell performance loss","authors":"Yubo Hu, Mingsheng Hao, Yinshi Li","doi":"10.1016/j.electacta.2025.146702","DOIUrl":"10.1016/j.electacta.2025.146702","url":null,"abstract":"<div><div>Pt degradation is the main ageing mechanism restricting the lifespan of proton exchange membrane fuel cells (PEMFCs) and it exhibits spatial heterogeneity as the Pt particles are exposed to spatially varying local conditions during operation. Current models for studying Pt degradation ignore the local condition variations, resulting in limited understanding of such heterogeneous degradation phenomena within cathode catalyst layer (CCL). Herein, a degradation-performance coupled model is developed by coupling a two-dimensional Pt degradation model with a global PEMFC performance model, which contains the instantaneous feedback between local condition variations and aging behavior to investigate the heterogeneous Pt degradation and cell performance loss. The Pt degradation deteriorates PEMFC performance via additional activation overpotential, amplified microscale oxygen transport resistance and increased ohmic loss caused by the concentrated reaction current region moving away from the membrane. In addition, exacerbated ECSA and Pt mass loss can be found near the CCL/membrane interface and additional non-uniformity is demonstrated on in-plane direction, showing Pt degrades more at the outlet than the inlet. More importantly, the contribution of different degradation mechanisms and particle size distribution evolution also exhibit spatially non-uniform. Insights from this work may guide the design of highly durable membrane electrodes.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"536 ","pages":"Article 146702"},"PeriodicalIF":5.5,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288507","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}

引用次数: 0

Optimizing cation synergy in high entropy oxides for superior bifunctional oxygen electrocatalysis 优化高熵氧化物中阳离子协同作用的双功能氧电催化

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-13 DOI: 10.1016/j.electacta.2025.146709

Uygar Geyikci, Tuncay Erdil, Cagla Ozgur, Cigdem Toparli

{"title":"Optimizing cation synergy in high entropy oxides for superior bifunctional oxygen electrocatalysis","authors":"Uygar Geyikci, Tuncay Erdil, Cagla Ozgur, Cigdem Toparli","doi":"10.1016/j.electacta.2025.146709","DOIUrl":"10.1016/j.electacta.2025.146709","url":null,"abstract":"<div><div>High entropy oxide materials are new-generation materials with diverse possible applications in various fields, including electrocatalyst research. However, the effectiveness of non-stoichiometric high-entropy oxides remains unexplored. Using the well-established sol-gel method, this study synthesized five high-entropy oxides with varying deviations from stoichiometry. Variations in metal-oxygen bond lengths and work functions are observed by deviating from stoichiometric ratios without showing significant changes in oxygen vacancy content. Among the high-entropy oxides (HEOs), the Co-rich (Co<sub>0.3</sub>Fe<sub>0.175</sub>Cr<sub>0.175</sub>Mn<sub>0.175</sub>Zn<sub>0.175</sub>)<sub>3</sub>O<sub>4</sub> (Co0.3) and (Co<sub>0.225</sub>Fe<sub>0.1</sub>Cr<sub>0.225</sub>Mn<sub>0.225</sub>Zn<sub>0.225</sub>)<sub>3</sub>O<sub>4</sub> (Fe0.1) compositions demonstrate a better performance in OER, ORR, and battery applications attributed to their enhanced charge transfer rates and catalytic activity. Co0.3 exhibited the lowest overpotential of 428 mV at a current density of 10 mA cm<sup>−2</sup> and the smallest Bifunctional Index (BI) of 0.95 V. Analysis reveals a non-linear correlation between Co and Fe content, work function, metal-oxygen bond length, and electrocatalytic activity. Our findings propose a better understanding of the effect of non-stoichiometry and Co and Fe synergy on high-entropy oxide for advancing electrocatalyst design.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"536 ","pages":"Article 146709"},"PeriodicalIF":5.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144278540","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}

引用次数: 0

First electrochemical analysis of acalabrutinib via heterostructure porous carbon matrix contains multimetals 含多金属的异质结构多孔碳基体对阿卡拉布替尼的电化学分析

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-13 DOI: 10.1016/j.electacta.2025.146715

Nesrin Bugday , Asena Ayse Genc , Wiem Bouali , Nevin Erk , Sedat Yaşar

{"title":"First electrochemical analysis of acalabrutinib via heterostructure porous carbon matrix contains multimetals","authors":"Nesrin Bugday , Asena Ayse Genc , Wiem Bouali , Nevin Erk , Sedat Yaşar","doi":"10.1016/j.electacta.2025.146715","DOIUrl":"10.1016/j.electacta.2025.146715","url":null,"abstract":"<div><div>A novel electrochemical sensor based on a NiZn/Co heterostructure embedded in nitrogen-doped porous carbon (NiZn/Co@NPC) was successfully developed for the sensitive determination of Acalabrutinib (ACA). The NiZn/Co@NPC nanocomposite was synthesized using Ni/Zn@ZIF as a precursor, ensuring the uniform dispersion of nanoparticles within the porous carbon matrix, as confirmed by XRD, SEM, and TEM analyses. The incorporation of multi-metallic active sites and the high surface area of the porous carbon significantly enhanced electron transfer, minimized nanoparticle aggregation, and improved electrochemical performance. The NiZn/Co@NPC-modified glassy carbon electrode (NiZn/Co@NPC/GCE) exhibited superior sensitivity compared to the bare electrode, with a wide linear detection range (0.5–5.0 µM), a low detection limit (0.03 µM), and excellent repeatability (RSD = 1.4 %) and reproducibility (RSD = 2.0 %). The sensor demonstrated high selectivity against potential interferents, confirming its robustness for real-world applications. Analytical validation in pharmaceutical capsules, spiked urine, and plasma samples using the standard addition method yielded recoveries ranging from 99.4 % to 101.9 %, confirming the accuracy and reliability of the electrochemical method. The incorporation of multi-metallic active sites and creation of more electroactive surface area in the porous carbon by doping different redox active metals leads to significantly enhanced charge transfer, minimized nanoparticle aggregation, and improved electrochemical performance.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"536 ","pages":"Article 146715"},"PeriodicalIF":5.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288513","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}

引用次数: 0

Exploring the relationship between water impurities, electrode charge density, and electric double layer structure and capacitance in carbon micropores 碳微孔中水杂质、电极电荷密度、双电层结构和电容的关系研究

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-13 DOI: 10.1016/j.electacta.2025.146711

Darya L. Gurina , Sergey E. Kruchinin , Yury A. Budkov

{"title":"Exploring the relationship between water impurities, electrode charge density, and electric double layer structure and capacitance in carbon micropores","authors":"Darya L. Gurina , Sergey E. Kruchinin , Yury A. Budkov","doi":"10.1016/j.electacta.2025.146711","DOIUrl":"10.1016/j.electacta.2025.146711","url":null,"abstract":"<div><div>Supercapacitors are becoming increasingly important in energy storage applications due to their high power density, long cycle life, and fast charging capabilities. However, to further enhance supercapacitor performance, a deeper understanding of the electric double layer (EDL) structure at the electrode-electrolyte interface is essential. This molecular dynamics (MD) study explores the structure and electrochemical behavior of 2 M 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide/dimethyl sulfoxide ([EMIM][NTf₂]/DMSO) electrolytes, with and without water impurities, confined within slit-shaped carbon micropores (widths: 0.7–1.9 nm; surface charge densities: 0 to ± 1.6 <em>e</em>/nm²). The findings reveal that water disrupts ion layering, reduces the counterion fraction near electrode surfaces, and alters hydrogen-bonding patterns. Disjoining pressure oscillates with pore width, with minor changes upon water addition. The disjoining pressure's parabolic dependence on surface charge matches reported data for [EMIM][NTf₂] in carbon electrodes. Water reduces disjoining pressure in moderately negative pores (σ = -0.2 to -0.8 <em>e</em>/nm²) but increases it in neutral and highly charged pores, reflecting hydration and adsorption changes. Calculated differential capacitance profiles exhibit camel-shaped curves, with an asymmetry between positive and negative potentials, consistent with experimental trends for [EMIM][NTf₂]/DMSO systems. The values align closely with those reported for carbon electrodes.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"535 ","pages":"Article 146711"},"PeriodicalIF":5.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144278539","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}

引用次数: 0

Effects of synchronous laser irradiation on anodic dissolution behavior 同步激光照射对阳极溶解行为的影响

IF 5.5 3区材料科学

Electrochimica Acta Pub Date : 2025-06-13 DOI: 10.1016/j.electacta.2025.146713

Yong Yang , Yufeng Wang , Wenming Jiang , Tong Li , Yunfeng Liu , Wenwu Zhang

{"title":"Effects of synchronous laser irradiation on anodic dissolution behavior","authors":"Yong Yang , Yufeng Wang , Wenming Jiang , Tong Li , Yunfeng Liu , Wenwu Zhang","doi":"10.1016/j.electacta.2025.146713","DOIUrl":"10.1016/j.electacta.2025.146713","url":null,"abstract":"<div><div>Laser has been adopted to improve the efficiency and localization of electrochemical machining (ECM), which is referred to as laser and electrochemical machining (LECM). Nevertheless, the electrochemical dissolution behavior under synchronous laser irradiation remains unclear. This study investigated the effects of laser irradiation on the electrochemical dissolution behavior and surface characteristics. The polarization curves and electric current efficiency were measured using synchronous laser irradiation on the electrochemical dissolution area. Furthermore, the evolution of the surface morphology, roughness, chemical content, and residual stress with varying laser power and electric current densities was characterized. Results demonstrated that laser irradiation could remove passivation film, enabling anodic dissolution at a lower potential and enhancing electric current density. Electrochemical impedance spectroscopy (EIS) results revealed that laser irradiation could decrease electrochemical impedance by three orders of magnitude. Moreover, the electric current efficiency could be increased by synchronous laser irradiation with an electric current density of smaller than 3.75 A/cm<sup>2</sup>. XPS results also indicated that laser irradiation favored the anodic reactions. Meanwhile, the surface characteristics relied on the comparison of electric current density and laser power. The enhanced electrochemical dissolution improved the surface finish with an increase in electric current density during LECM. The surface tensile stress increased with increasing laser power, which could accelerate the rate of anodic dissolution. Additionally, laser processing could improve the precision of ECM by locally removing the oxide film. This work contributes to the understanding of the material removal mechanisms of LECM, which would promote the development and utilization of LECM.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"535 ","pages":"Article 146713"},"PeriodicalIF":5.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144278542","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}

引用次数: 0