International Journal of Electrochemical Science最新文献

{"title":"An alternative method for anodic electropolymerization of polymelamine in water-free deep eutectic solvents","authors":"Yujie Tan ,&nbsp;Jin Ma ,&nbsp;Hongwen Tao ,&nbsp;Yuanqiang Hao ,&nbsp;Peisheng Zhang ,&nbsp;Rongjin Zeng ,&nbsp;Shu Chen","doi":"10.1016/j.ijoes.2025.101096","DOIUrl":"10.1016/j.ijoes.2025.101096","url":null,"abstract":"<div><div>In our previous study (Electrocatalysis 15: 394–400, 2024), we proposed a method for preparing polymelamine (pMel) by adding a small amount of water to deep eutectic solvents (DES). However, electropolymerization under completely anhydrous conditions has not yet been achieved. This study experimentally identified that the main challenges in electropolymerizing melamine in anhydrous DES solutions are the low concentration of melamine monomer used in current literature and the slow diffusion rate in DES. These factors lead to the rapid depletion of melamine monomer in the electrode-solution interface diffusion layer by electro-generated active chlorine, ultimately preventing the effective deposition of pMel films. By leveraging the high solubility of melamine in DES, we successfully achieved pMel synthesis under anhydrous conditions in Ethaline and Glyceline by appropriately increasing the melamine monomer concentration or applying stirring. The formation process and morphological structure of the pMel deposition layer were confirmed using cyclic voltammetry (CV), quartz crystal microbalance (EQCM), and atomic force microscopy (AFM).</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 9","pages":"Article 101096"},"PeriodicalIF":1.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical detection of cortisol using a molecularly imprinted Au-decorated SiC/β-cyclodextrin nanocomposite sensor in human sweat","authors":"Yan Hu,&nbsp;Tao Jiang","doi":"10.1016/j.ijoes.2025.101093","DOIUrl":"10.1016/j.ijoes.2025.101093","url":null,"abstract":"<div><div>The developed wearable electrochemical sensing platform demonstrates significant potential for continuous monitoring of cortisol in human sweat, a key biomarker for evaluating stress and fatigue levels in athletic performance. Utilizing a novel Au-decorated nanocomposite functionalized with β-cyclodextrin-assisted molecular recognition sites, this study outlines a systematic fabrication process where SiC nanoparticles are first oxidized and subsequently decorated with gold nanoparticles, achieving an average Au particle diameter of 5.3 ± 1.2 nm to enhance conductivity and electron transfer kinetics. The incorporation of dual amine-terminated β-cyclodextrin not only improves molecular recognition but also facilitates selective cortisol capture, as evidenced by sensitivity improvements to approximately 1.85 μF per ng/mL over a linear range of 5–45 ng/mL and a limit of detection as low as 2.8 ng/mL. Comprehensive electrochemical evaluations, including cyclic voltammetry, confirm the sensor’s ability to reliably distinguish cortisol from potential interferents, yielding selectivity coefficients between 18.3 and 31.0, with reproducibility demonstrated by relative standard deviations below 4.8 %. Real sweat sample analyses using a standard addition method provided a robust calibration curve (R² = 0.993), confirming effective quantification in complex biological matrices typical of athletic environments. Furthermore, the sensor exhibited excellent mechanical resilience, with a capacitance reduction of only 4 % after 20 bending cycles, and maintained stable performance over 30 days, indicating long-term durability suitable for wearable sports applications. This innovative approach integrates material design, surface chemistry, and device engineering to enable rapid, accurate, and noninvasive monitoring of athlete stress levels, offering a promising avenue for real-time physiological tracking during training and competitive performance.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101093"},"PeriodicalIF":1.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144239721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front Matter1:Full Title Page","authors":"","doi":"10.1016/S1452-3981(25)00159-2","DOIUrl":"10.1016/S1452-3981(25)00159-2","url":null,"abstract":"","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101084"},"PeriodicalIF":1.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-operando 3D visualization of nickel electrodeposition and mass transport phenomena: Insights from X-ray microcomputed tomography","authors":"Rodrigo F.B. de Souza,&nbsp;Andrea S. Del Pozzo,&nbsp;Antonio D. Giuliano,&nbsp;Gabriel Silvestrin,&nbsp;Lorenzo De Micheli,&nbsp;Edson P. Soares,&nbsp;Claudia Giovedi,&nbsp;Luis A.A. Terremoto,&nbsp;Samir L. Somessari,&nbsp;Almir O. Neto,&nbsp;Wilson Calvo","doi":"10.1016/j.ijoes.2025.101090","DOIUrl":"10.1016/j.ijoes.2025.101090","url":null,"abstract":"<div><div>Nickel electrodeposition is widely used in industrial applications due to its ability to enhance the mechanical and corrosion resistance of metallic substrates. However, understanding mass transport mechanisms during electrodeposition remains a challenge, as conventional models struggle to describe complex three-dimensional phenomena such as concentration gradients, depletion zones, and convective instabilities. In this study, we employ X-ray micro-computed tomography (X-ray µCT) <em>in-operando</em> imaging technique to investigate the electrodeposition of nickel on titanium under potentiostatic conditions. Chronoamperometric analysis and scanning electron microscopy (SEM) confirmed distinct deposition behaviors at −0.5 V and −1.2 V, with negligible deposition at the lower potential and significant nickel growth, including dendritic structures, at the higher potential. The X-ray µCT images revealed the formation of structured ionic layers near the electrode surfaces, with Ni²⁺ ion migration and concentration gradients influencing deposition dynamics. At −1.2 V, depletion zones and convective instabilities were identified, suggesting a competition between diffusion, migration, and Rayleigh-Bénard convection. These findings demonstrate the feasibility of X-ray µCT for real-time 3D visualization of electrochemical processes, providing novel insights into mass transport during electrodeposition.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101090"},"PeriodicalIF":1.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144194933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in photoelectrochemical sensing of bisphenol A","authors":"Chongyang Li ,&nbsp;Xuanye Liu ,&nbsp;Hao Zhou ,&nbsp;Yuanqiang Hao","doi":"10.1016/j.ijoes.2025.101089","DOIUrl":"10.1016/j.ijoes.2025.101089","url":null,"abstract":"<div><div>Bisphenol A (BPA), a widely used endocrine disruptor in plastics and consumer goods, poses serious environmental and health threats. Its widespread presence necessitates the development of sensitive, selective, and portable detection methods. Photoelectrochemical (PEC) sensing, combining optical excitation with electrochemical detection, offers distinct advantages such as low background, high sensitivity, and miniaturization potential for trace BPA analysis. In this review, we systematically summarize the latest progress of PEC sensing strategies for BPA detection, classified into three primary mechanisms: (i) direct PEC sensors utilizing the intrinsic electron-donating property of BPA to enhance photocurrent signals, (ii) aptamer-based PEC sensors integrating the high selectivity of aptamer recognition elements with photoactive nanomaterials, and (iii) molecularly imprinted PEC sensors employing artificial recognition cavities embedded in conductive polymers or inorganic semiconductor matrices. Detailed discussions on the sensing mechanisms, material synthesis, electrode construction, and performance evaluation are critically presented. Emphasis is placed on innovative approaches such as heterojunction engineering, visible-light-driven photoactive materials, and self-powered systems. Finally, current challenges and future research perspectives are highlighted. Continuous advancements are expected to significantly promote the practical deployment of PEC sensors for effective BPA monitoring in environmental and food safety applications.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101089"},"PeriodicalIF":1.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tangerine peel-derived nitrogen doped porous carbon as electrode material for high-performance supercapacitors","authors":"Zhihao Gong ,&nbsp;Yuang Guo ,&nbsp;Xiaoli Chen ,&nbsp;Jiangrong Xiao ,&nbsp;Tingting Wang ,&nbsp;Bo Chai","doi":"10.1016/j.ijoes.2025.101081","DOIUrl":"10.1016/j.ijoes.2025.101081","url":null,"abstract":"<div><div>Nitrogen-doped hierarchical meso/microporous carbons were successfully synthesized from tangerine peel through pyrolytic activation at elevated temperature in nitrogen atmosphere, utilizing potassium hydroxide as activator and melamine as nitrogen source. The resulting optimal hierarchical carbon (denoted as NBC-600) possessed a high specific surface area of 601.49 m²·g⁻¹, along with a nitrogen doping level of 2.5 %, both of which contribute significantly to its outstanding supercapacitive performance. Electrochemical evaluations reveal that the NBC-600 electrode delivers an excellent gravimetric specific capacitance of 304.4 F·g⁻¹, accompanied by excellent cycling stability and rate capability. Moreover, a symmetric two-electrode supercapacitor assembled with NBC-600 achieves an energy density of 26.8 Wh·kg⁻¹ at a corresponding power density of 250.0 W·kg⁻¹. Notably, the device demonstrates exceptional cycling stability, retaining 96.9 % of its initial capacitance after 10,000 charge-discharge cycles at a current density of 10 A·g⁻¹. The superior electrochemical properties of NBC-600 surpass that of numerous biomass-derived hierarchical porous carbons, underscoring its feasibility as a cost efficient and high-performance electrode material for next-generation supercapacitors.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101081"},"PeriodicalIF":1.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in self-powered electrochemical systems for sports applications: Harnessing energy and sensing","authors":"Baogen Yang ,&nbsp;Longlong Wang ,&nbsp;Bo Sun","doi":"10.1016/j.ijoes.2025.101080","DOIUrl":"10.1016/j.ijoes.2025.101080","url":null,"abstract":"<div><div>Recent advancements in electrochemical science are enabling the development of self-powered systems that address critical power and sensing needs in modern sports applications. This review highlights how electrochemical principles—primarily in energy conversion, storage, and sensing—underpin next-generation “smart” sports devices. Triboelectric and piezoelectric nanogenerators are focal points, as they harness biomechanical energy from athletic movements and impacts. These energy-harvesting transducers, when integrated with electrochemical storage elements such as batteries or supercapacitors, create self-sustaining power loops that eliminate the need for traditional external power supplies. The review discusses the fundamentals of electrochemical storage materials, including nanostructured metal oxides and carbon-based architectures, detailing how these materials facilitate robust, high-capacity energy buffering in wearable formats. Additionally, electrochemical sensing platforms—particularly those based on sweat analysis—are presented as a non-invasive means to monitor key biochemical markers like lactate and electrolytes, providing actionable insights into performance and fatigue. Emphasis is placed on device architecture and fabrication strategies (including flexible substrates and printing techniques) that enhance wearability, durability, and real-time data capture. Beyond material design, emerging trends in machine learning are explored, showcasing how self-powered electrochemical systems can yield intelligent analytics for coaches and athletes alike. By merging electrochemical storage, energy harvesting, and data processing, these smart sports technologies promise to transform athletic training, competition, and injury prevention. Future prospects encompass multifunctional, integrated devices that leverage improved materials, manufacturing scalability, and AI-driven analysis for widespread deployment in sports performance monitoring.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101080"},"PeriodicalIF":1.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on State of Charge estimation method for an improved lithium-ion gas-liquid dynamics model with temperature parameters","authors":"Kuandai Zhang ,&nbsp;Yongjun Tian ,&nbsp;Chengyang Liu ,&nbsp;Huanhuan Li ,&nbsp;Aibin Yi ,&nbsp;Yaping Wang ,&nbsp;Nan Wang ,&nbsp;Lei Pei ,&nbsp;Zhen Wang ,&nbsp;Haobin Jiang","doi":"10.1016/j.ijoes.2025.101073","DOIUrl":"10.1016/j.ijoes.2025.101073","url":null,"abstract":"<div><div>Accurate estimation of the State of Charge (SOC) is fundamental to ensure the safe and reliable operation of lithium-ion batteries, and developing a high-performance battery model is crucial for achieving precise SOC estimation. However, current lithium-ion battery models struggle to balance accuracy and complexity. Against this background, on the basis of further investigating battery polarization phenomena and taking temperature effects into account, this paper constructs an improved gas–liquid dynamics model with temperature parameters and proposes an online SOC estimation method based on this model. The model offers good accuracy, and its voltage equation is only first-order, resulting in low computational cost. This model can more perfectly simulate the voltage rebound characteristics exhibited by the battery as a result of polarization reactions and takes into account the influence of temperature on SOC estimation. Compared with the original gas–liquid dynamics model, this enhanced model improves SOC estimation accuracy. Additionally, the unscented Kalman filter algorithm is introduced to achieve online SOC estimation. Finally, a 3Ah ternary lithium battery is tested under three driving cycles to validate the proposed model and algorithm. The results show that the maximum SOC estimation error is less than 2 % in all cases. When facing initial SOC errors and initial temperature errors, the method rapidly eliminates the impact of initial errors, and the influence of initial errors on subsequent SOC estimation results is minimal, demonstrating strong robustness of the proposed algorithm.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101073"},"PeriodicalIF":1.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review on the application strategies of electrooxidation technology for landfill leachate treatment","authors":"Meiyu Jia ,&nbsp;Yaoping Guo ,&nbsp;Keng Xuan ,&nbsp;Binyu Lu ,&nbsp;Sehrish Sadia","doi":"10.1016/j.ijoes.2025.101078","DOIUrl":"10.1016/j.ijoes.2025.101078","url":null,"abstract":"<div><div>Landfill leachate treatment remains a significant environmental challenge due to its complex composition and high pollutant concentrations. Electrochemical oxidation (EO) has emerged as an effective method for leachate treatment, offering advantages such as strong oxidation capability, mild reaction conditions, and no secondary pollution. However, current research primarily focuses on modifying anode materials, with limited comparative studies across different types and insufficient attention to process design for real-world applications. To address these gaps, this review thoroughly examines the degradation mechanisms of pollutants during EO, including direct oxidation pathways and indirect oxidation mediated by multiple reactive species. It also systematically analyzes the properties of boron-doped diamond (BDD) and various dimensionally stable anodes (DSA) in activating reactive species for landfill leachate treatment. Four practical processes that combine EO with other technologies are proposed, along with a discussion of their respective advantages, disadvantages, and suitable application scenarios. Additionally, we discussed the formation mechanisms of chlorinated by-products in EO and engineering control strategies to mitigate secondary pollution. This review provides a comprehensive reference for selecting and optimizing anode materials, offering valuable insights into the design of hybrid processes to enhance treatment efficiency and improve real-world applicability.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101078"},"PeriodicalIF":1.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-physical field simulation and experimental research on inner-jet through-mask electrochemical machining of micro-pit arrays","authors":"Feng Wang,&nbsp;Xinke Yuan,&nbsp;Cheng Zhou,&nbsp;Yiqing Wan,&nbsp;Tao Wang,&nbsp;Xiaokai Wu","doi":"10.1016/j.ijoes.2025.101079","DOIUrl":"10.1016/j.ijoes.2025.101079","url":null,"abstract":"<div><div>Micro-textures such as micro-pits and micro-grooves play a significant role in regulating the surface properties of metal components. Through-mask electrochemical machining (TMECM) is a non-contact machining method based on the principle of anodic dissolution. It utilizes an insulating mask to generate micro-texture features in batches on the surface of workpieces, playing a significant role in surface micro-structure processing. This work presents an inner-jet TMECM method to address the challenges of limited machining depth and a narrow machining dimension range in a micro-pit array TMECM. A gas-liquid two-phase flow field model and an electric field model were established. Based on the coupled simulation, the influence of different inner-jet cathodes on the changes in physical quantities was investigated. The simulation results showed that due to the small coverage area of the contracted cathode bottom, the flow velocity in the frontal gap was as high as 9.16 m/s. This led to a reduction in the area of bubble aggregation and a decrease in the low-conductivity region. Therefore, employing a contracted cathode was beneficial for obtaining higher precision micro-pit arrays. In contrast, when using right-angled and extended cathodes, the larger coverage area of the cathode bottom reduced the flow velocity in the frontal gap to below 3 m/s. This led to an increase in bubble formation and aggregation area, resulting in greater fluctuations in conductivity. Moreover, the high current density region with a current density higher than 50 A/cm² significantly expanded. Therefore, using right-angled and extended cathodes was beneficial for improving the machining efficiency of micro-pit arrays, but the machining accuracy was relatively low. Based on the simulation analysis, comparative experiments were conducted to investigate the coupling effects between inner-jet cathode characteristics and processing parameters on the machining of micro-pit arrays. The resulting variation patterns for micro-pit diameter, depth, and average corrosion coefficient were obtained. Additionally, by utilizing appropriate inner-jet cathodes and machining parameters, the diameter of the micro-pit array can be regulated between 200μm and 470μm, and the depth can be controlled between 0μm and 150μm. This demonstrates that TMECM with an inner-jet cathode can enhance both the dimension range and the depth of micro-pit array machining by regulating the high current density coverage area and electrolyte fluid kinetic energy.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101079"},"PeriodicalIF":1.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}