International Journal of Electrochemical Science最新文献

{"title":"Electrochemical and theoretical investigation of oxadiazole derivatives as corrosion inhibitors for brass (Cu58Zn40Pb2) in simulated cooling water","authors":"A. Rochdi ,&nbsp;A. Chraka ,&nbsp;N. Er-rahmany ,&nbsp;R. Touir ,&nbsp;M. Ebn Touhami ,&nbsp;M. Chahboune ,&nbsp;H. Larhzil ,&nbsp;B. Mernari ,&nbsp;J. Saranya ,&nbsp;Hatem A. Abuelizz ,&nbsp;A. Zarrouk","doi":"10.1016/j.ijoes.2025.101034","DOIUrl":"10.1016/j.ijoes.2025.101034","url":null,"abstract":"<div><div>The effect of temperature and immersion time on the anticorrosion character of two oxadiazoles derivatives, namely 2,5-bis(3-methylphenyl)-1,3,4-oxadiazole (3-MPOX) and 2,5-bis(4-methylphenyl)-1,3,4-oxadiazole (4-MPOX) for a brass Cu58Zn40Pb2 substrate in a simulated cooling water system (SCWS) solution was investigated using a potentiodynamic polarization curve (PDP) and electrochemical impedance spectroscopy (EIS). In order to explain the action mode and confirm the anticorrosion performance order, DFT calculations and MD simulation were conducted. The PDP results showed that 3-MPOX and 4-MPOX act as a mixed type inhibitor and their anticorrosion efficiency losses slightly with temperature electrolyte from 91 % and 90 % at 305 K to 81 % and 78 % at 335 K for 3-MPOX and 4-MPOX, respectively. Thermodynamic and kinetic parameters for the adsorption process indicated that these compounds adsorbed via physical adsorption. Additionally, the EIS results demonstrated that the performance of these compounds enhances remarkably with immersion time, reaching its extreme of 98 % and 95 % after 24 hours of immersion for 10⁻³ M 3-MPOX and 10⁻³ M 4-MPOX, respectively. Therefore, for two effect temperature and immersion times, it is found that the inhibition efficiency depends on the –CH₃ position in the ring and follows the classmen: 3-MPOX ≥ 4-MPOX. Finally, the DFT calculations indicated that 3-MPOX is more reactive than 4-MPOX confirming the obtained experimental performance. MD simulation indicated that the 3-MPOX and 4-MPOX molecules are oriented parallel to the Cu/Zn atoms surface, succeeding adsorption by a great portion of the C-O / C-N groups and C<img>C bonds of aromatic benzene. These findings explained and confirmed the action mode and the obtained performance order.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101034"},"PeriodicalIF":1.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890593","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":"Theoretical study on sodium storage properties of two-dimensional magnetic VS2 monolayer","authors":"Wei-qin Fan,&nbsp;Xin-xin Zhao","doi":"10.1016/j.ijoes.2025.101052","DOIUrl":"10.1016/j.ijoes.2025.101052","url":null,"abstract":"<div><div>In order to broaden the selection range of anode materials for sodium ion batteries, improve the overall performance of batteries and commercial application potential. This study assessed the potential of monolayer VS₂ as an anode material using first-principles calculations. Through ab initio molecular dynamics simulations,the thermal stability of the VS₂ monolayer was verified. CI-NEB calculations revealed that sodium ions diffuse efficiently on the VS₂ monolayer, with a diffusion barrier of approximately 0.12 eV. Calculations of the density of states indicate that the VS₂ monolayer is intrinsically metallic, implying excellent rate performance. By calculating Na adsorption behavior on the VS₂ monolayer, we determined that the minimum open-circuit voltage range is 0.01 V with a maximum Na storage capacity of 932 mAh/g. During charge/discharge, the magnetism of the VS₂ monolayer changes due to variations in V-d orbital occupancy. Our study provides new ideas for screening sodium-ion battery anode materials. It also proposes a novel approach to monitor battery state-of-charge states based on changes in material magnetic moments.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 8","pages":"Article 101052"},"PeriodicalIF":1.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928688","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 and chemometric authentication of Panax notoginseng from different geographical origins using graphene-modified screen-printed electrodes","authors":"Shujing Wang ,&nbsp;Jun Wang ,&nbsp;Wenjia Mi ,&nbsp;Wen Wen ,&nbsp;Xinyu Wang","doi":"10.1016/j.ijoes.2025.101050","DOIUrl":"10.1016/j.ijoes.2025.101050","url":null,"abstract":"<div><div>An effective, rapid, and low-cost platform for herbal authentication was developed by integrating nanomaterial-modified sensor technology with advanced data analysis techniques. In this study, 120 Panax notoginseng samples (40 each from Yunnan, Sichuan, and Guangxi provinces) were collected and analyzed. A graphene-modified screen-printed electrode was fabricated by depositing 10 μL of graphene ink and allowing a 2-hour drying period, which yielded a uniform film with an average flake size of 200 nm. Differential pulse voltammetry was employed to capture the redox behaviors of herbal extracts in 0.1 M phosphate-buffered saline (pH 7.0) and 0.1 M acetate-buffered solution (pH 4.5), resulting in distinct oxidation peaks at 0.47 V, 0.50 V, and 0.45 V for the three sample groups. The acquired signals were normalized and subjected to first-order derivative processing to enhance peak resolution and minimize baseline drift. Subsequent principal component analysis revealed that the first two components accounted for 72 % and 13 % of the total variance, respectively, cumulatively explaining 85 % of the data variability. Furthermore, machine learning algorithms were applied to classify the samples based on their processed electrochemical fingerprints, with the non-linear support vector machine model achieving an accuracy of 92.0 %, precision of 92.5 %, recall of 91.5 %, and an area under the receiver operating characteristic curve of 0.95, misclassifying only 4 out of 108 test instances. These results indicate that the proposed platform can reliably distinguish subtle differences in the chemical profiles of herbal extracts, offering a promising approach for objective quality control and authentication in herbal medicine applications. These innovative findings underscore the potential for widespread implementation of this technique in commercial and research settings.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101050"},"PeriodicalIF":1.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890596","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":"Synthesis of Hierarchically Structured Nickel–Iron Sulfide on Nickel Foam as a Catalyst for Efficient Oxygen Evolution Reaction","authors":"Yuanze Wei,&nbsp;Junpeng Cheng,&nbsp;Qing Yang,&nbsp;Siqi Wang,&nbsp;Xing Chen,&nbsp;Bing Li,&nbsp;Benxue Zou","doi":"10.1016/j.ijoes.2025.101051","DOIUrl":"10.1016/j.ijoes.2025.101051","url":null,"abstract":"<div><div>A nickel-iron sulfide nanosheets modified nickel foam electrode NiFeS/NF was prepared via a facial one-step hydrothermal method. The NiFeS/NF showed a hierarchical porous structure with nanosheet-constructed flower-like clusters with a large surface area. The composite catalyst NiFeS/NF exhibited high oxygen-evolution activity in 1<!--> <!-->M KOH electrolyte. It had an overpotential of 170<!--> <!-->mV at 10<!--> <!-->mA/cm² with a low Tafel slope of 86<!--> <!-->mV dec^-1. After 100<!--> <!-->h of oxygen evolution at 100<!--> <!-->mA<!--> <!-->cm⁻², the electrode maintained good stability. Density functional theory calculations show that NiFeS/NF exhibits superior OER activity in alkaline media due to the optimization of Gibbs free energy ΔG_OER and a more favorable O₂ desorption process.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101051"},"PeriodicalIF":1.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898424","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 detection of hydrogen sulfide","authors":"Fang Chen ,&nbsp;Xiuhua Wei ,&nbsp;Yuanqiang Hao ,&nbsp;Yikun Wan ,&nbsp;Yintang Zhang ,&nbsp;Maotian Xu","doi":"10.1016/j.ijoes.2025.101046","DOIUrl":"10.1016/j.ijoes.2025.101046","url":null,"abstract":"<div><div>Hydrogen sulfide (H₂S), as a biologically significant gaseous signaling molecule and environmental pollutant, has garnered extensive attention due to its crucial roles in various physiological processes and environmental systems. Photoelectrochemical (PEC) sensing has emerged as a promising analytical strategy for H₂S detection owing to its high sensitivity, excellent selectivity, and minimal background interference, achieved through effectively coupling specific analyte recognition events with photoinduced electrochemical signals. This review systematically summarizes recent advances in PEC sensing technologies for H₂S detection, categorized into three main strategies: (i) PEC sensors based on the intrinsic hole-scavenging capability of H₂S; (ii) PEC platforms constructed via the in situ generation of metal sulfides (such as CdS, Bi₂S₃, Ag₂S, and Cu_xS); and (iii) PEC sensors incorporating small organic molecular probes specifically responsive to H₂S. Detailed discussions include detection principles, sensor configurations, material components, and analytical performance of various PEC sensing systems. Finally, perspectives are provided regarding future opportunities and challenges, including the exploration of novel metal sulfide semiconductors, development of advanced single-atom catalysts for precise recognition of H₂S, and further optimization of multifunctional organic PEC probes to extend practical applications in environmental monitoring, biomedical diagnostics, and food safety analyses.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101046"},"PeriodicalIF":1.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882871","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":"Development of an electrochemical immunosensor for sensitive detection of clenbuterol in food supplements","authors":"Lianlin Zhai ,&nbsp;Yanan Liu","doi":"10.1016/j.ijoes.2025.101047","DOIUrl":"10.1016/j.ijoes.2025.101047","url":null,"abstract":"<div><div>A label-free electrochemical immunosensor is reported for trace-level determination of clenbuterol in sports food supplements. A carboxyl-terminated 11-mercaptoundecanoic acid (11-MUA) self-assembled monolayer was assembled on a gold micro-disk and activated with EDC/NHS to covalently anchor anti-clenbuterol antibodies. Clenbuterol binding was transduced by electrochemical impedance spectroscopy, giving a linear ΔR_ct–log C relationship from 10⁻¹¹ to 10⁻⁶ g/mL (R² = 0.993) and a limit of detection of 3.2 × 10⁻¹² g/mL. The sensor exhibits excellent precision (intra-/inter-assay RSD 2.5 %/3.1 %) and selectivity against structurally related β-agonists. Recoveries of 92.5–105.8 % were obtained in spiked commercial supplements, confirming matrix tolerance. After 20 days at 4 °C the signal retained 90 % of its initial value, underscoring practical shelf-life. These figures of merit match or surpass chromatographic and ELISA benchmarks while requiring no sophisticated instrumentation or sample derivatisation. The platform therefore provides a rapid, low-cost tool for on-site clenbuterol surveillance and supports regulatory compliance in sports-nutrition manufacturing.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101047"},"PeriodicalIF":1.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873416","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)00113-0","DOIUrl":"10.1016/S1452-3981(25)00113-0","url":null,"abstract":"","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 5","pages":"Article 101038"},"PeriodicalIF":1.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870113","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":"Enhanced oxygen evolution reaction activity of iridium oxide supported on tantalum-doped tin oxide for acidic water electrolysis","authors":"Juanjuan Tian ,&nbsp;Shang Li ,&nbsp;Zuobiao Zhu ,&nbsp;Jinting Tan ,&nbsp;Mu Pan","doi":"10.1016/j.ijoes.2025.101045","DOIUrl":"10.1016/j.ijoes.2025.101045","url":null,"abstract":"<div><div>In the research process of proton exchange membrane electrolysis, Ir-based catalysts exhibit sluggish dynamics of reaction and the poor durability in strongly acidic medium, as well as the high cost greatly limit their commercialization. In this paper, in order to decrease the Ir amount and improve precious metal utilization, Ta-doped tin oxide (SnO₂) was prepared by sol-gel method in this paper as a support and loaded with iridium dioxide (IrO₂). The results indicate that the Ta doping increased conductivity of SnO₂ by two orders of magnitude and inhibited particle size growth. The introduction of 2Ta-SnO₂ supports improved the electric charge transfer dynamics during the catalytic reaction process, and the mass activity of the 40 wt% IrO₂/2Ta-SnO₂ catalyst reached 835.39 A g⁻¹ IrO₂, which was 3.6 times higher than that of commercial IrO₂. The overpotential of the 40 wt% IrO₂/2Ta-SnO₂ catalyst was 264 mV at a current density of 10 mA cm⁻², which is due to the prominent dispersion effect of the support as well as the interaction of the support surface with the active substance. Its stability is better than that of commercial IrO₂ in a stability test over 20,000 s. Therefore, Ta-doped SnO₂ supported IrO₂ catalysts have a promising application by reducing the cost of precious metal catalysts and enhancing the electrocatalytic properties of OER catalysts.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101045"},"PeriodicalIF":1.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890694","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 study of the effects of additives and pH on the pulse-electrodeposition of high molybdenum content Ni-Mo alloys","authors":"Dongsong Zeng ,&nbsp;Jiongxian Li ,&nbsp;Xiangui Zheng ,&nbsp;Yinong Shi","doi":"10.1016/j.ijoes.2025.101044","DOIUrl":"10.1016/j.ijoes.2025.101044","url":null,"abstract":"<div><div>To achieve ultrahigh hardness in Ni-Mo binary alloy, it is essential to maximize the incorporation of Mo while avoiding the emergence of intermetallic secondary phases. In the present paper, pulse current electrodeposition was employed to synthesize a Ni-Mo single-phase solid solution with elevated molybdenum content. This was accomplished by systematically optimizing the bath composition, including sodium molybdate concentration, additive selection, and pH adjustment, within a Ni-rich aqueous sodium citrate solution. It is demonstrated that inclusion of saccharin and 2-butyne-1, 4-diol as additives adversely affects the Mo atomic percentage in the Ni-Mo deposit. This is attributed to the intensified adsorption competition between additive molecules and the ternary intermediate ions on the cathode surface during the off-time of pulse current electrodeposition, as corroborated by in situ layer formation analysis using an electrochemical quartz crystal microbalance. Nevertheless, by modulating the pH value towards 7.7 through the controlled ammonia solution in the bath, the concentration of the ternary intermediate precursors was progressively enhanced. This optimization facilitated the successful synthesis of a supersaturated solid solution with a composition of Ni-26 at% Mo. An unprecedented hardness up to 12.8 ± 0.4 GPa can be achieved in this high-molybdenum Ni-Mo alloy through appropriate annealing.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101044"},"PeriodicalIF":1.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877220","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 progress on electrochemical gas sensors for fire detection","authors":"Qun Wu,&nbsp;Zhenzhou Ding,&nbsp;Weidong Zhang","doi":"10.1016/j.ijoes.2025.101043","DOIUrl":"10.1016/j.ijoes.2025.101043","url":null,"abstract":"<div><div>Electrochemical sensing technology represents a rapidly advancing area in fire detection, offering significant improvements over traditional smoke and heat sensors. This review comprehensively examines the current state and recent advances of electrochemical fire detection sensors, emphasizing their ability to identify toxic gases produced during combustion at early stages, thereby enhancing occupant safety. Electrochemical gas sensors excel in detecting carbon monoxide, hydrogen cyanide, nitrogen oxides, and volatile organic compounds with high specificity and sensitivity. Advanced materials such as carbon nanostructures, noble metal catalysts, and metal-organic frameworks have significantly improved sensor performance by increasing sensitivity and reducing response times. However, electrochemical sensors face challenges, including cross-sensitivity, stability issues, and the need for periodic calibration, which currently limit their widespread adoption. Multisensor fusion techniques integrating electrochemical gas sensors with traditional smoke and heat detectors, coupled with sophisticated algorithms including neural networks and fuzzy logic, effectively address false alarms and enhance early fire detection reliability. Emerging innovations like flexible, wearable fire-sensing textiles and smart sensor arrays using microfabrication technology suggest exciting future possibilities for the integration of electrochemical sensors into diverse fire monitoring applications. Despite existing challenges, continuous improvements in sensor technology, combined with intelligent algorithms and big-data analytics, point toward increasingly robust, miniaturized, and smart fire detection systems in the future.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 7","pages":"Article 101043"},"PeriodicalIF":1.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882870","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}