International Journal of Electrochemical Science最新文献_第7页

Effect of deformation treatment on corrosion properties of Fe-Mn-Si shape memory alloys 变形处理对Fe-Mn-Si形状记忆合金腐蚀性能的影响

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-12-04 DOI: 10.1016/j.ijoes.2025.101263

Li Xinmei , Li Zhiming , Suo Shuai , Xue Tianxiang , Li Wen , Guo Fuqiang

引用次数: 0

Reduced graphene oxide-supported bipyridyl iron(II) complex as an efficient electrocatalyst for hydrogen evolution 还原氧化石墨烯负载的联吡啶铁（II）配合物作为析氢的高效电催化剂

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-11-24 DOI: 10.1016/j.ijoes.2025.101251

Amal BaQais , Mohamed M. Ibrahim , Salih S. Al-Juaid , Mohammed A. Amin

{"title":"Reduced graphene oxide-supported bipyridyl iron(II) complex as an efficient electrocatalyst for hydrogen evolution","authors":"Amal BaQais , Mohamed M. Ibrahim , Salih S. Al-Juaid , Mohammed A. Amin","doi":"10.1016/j.ijoes.2025.101251","DOIUrl":"10.1016/j.ijoes.2025.101251","url":null,"abstract":"<div><div>A bipyridyl-containing iron(II) complex, [Fe(BPy)₂Cl₂]•BPy (Fe-BPy), was synthesized and immobilized on reduced graphene oxide (rGO) to construct a hybrid electrocatalyst (Fe-BPy/rGO) for the hydrogen evolution reaction (HER) in alkaline media. Comprehensive characterization, including single-crystal XRD, spectroscopic, and electrochemical analyses, confirmed the octahedral geometry of Fe(II) and its stable non-covalent integration with rGO. Glassy carbon electrodes modified with Fe-BPy/rGO at different loading densities (0.1–0.5 mg cm⁻²) were evaluated in 0.1 M KOH. The optimized catalyst (0.5 mg cm⁻²) demonstrated outstanding HER activity, achieving an onset potential of −21 mV vs. RHE, an exchange current density of 0.7 mA cm⁻², and a Tafel slope of −114 mV dec⁻¹ , delivering 10 mA cm⁻² at an overpotential of 119 mV. These performances rival those of commercial Pt/C under identical conditions and surpass most reported molecular electrocatalysts in alkaline electrolytes. The hybrid also exhibited excellent durability, retaining activity after 5000 CV cycles and 48 h chronoamperometry. This study underscores the critical role of rGO in enhancing charge transfer, catalytic site accessibility, and long-term stability. The findings provide design guidelines for future molecular HER electrocatalysts, emphasizing the benefits of integrating earth-abundant transition-metal complexes with conductive carbon supports. Such hybrid systems represent a viable pathway toward cost-effective, scalable, and sustainable hydrogen production technologies.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 1","pages":"Article 101251"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682011","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}

引用次数: 0

Preparation and electrochemical performance of Nb-doped LiFePO₄/C regenerated from spent Li-ion battery cathodes 废锂离子电池负极再生nb掺杂lifepo4 /C的制备及其电化学性能

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-12-11 DOI: 10.1016/j.ijoes.2025.101261

Yuan Tang, Yanshuai Zhao, Kaixiong Xiang

引用次数: 0

Influence of chloride ion concentration on the corrosion behavior of 304 austenitic stainless steel in sulfuric acid 氯离子浓度对304奥氏体不锈钢在硫酸中腐蚀行为的影响

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-11-27 DOI: 10.1016/j.ijoes.2025.101257

Ahmed.S. Alshamsi, Asma.Y. Alkaabi, Afra.G. AlBlooshi

{"title":"Influence of chloride ion concentration on the corrosion behavior of 304 austenitic stainless steel in sulfuric acid","authors":"Ahmed.S. Alshamsi, Asma.Y. Alkaabi, Afra.G. AlBlooshi","doi":"10.1016/j.ijoes.2025.101257","DOIUrl":"10.1016/j.ijoes.2025.101257","url":null,"abstract":"<div><div>The corrosion behavior of 304 austenitic stainless steel in sulfuric acid (H<sub>2</sub>SO<sub>4</sub>) solutions was investigated as a function of chloride ion (Cl<sup>-</sup>) concentration. The steel exhibited distinctive electrochemical behaviors governed by both acid and chloride concentrations. In H<sub>2</sub>SO<sub>4</sub> solutions (≤ 1 M), the corrosion current density (<em>i</em><sub><em>corr</em></sub>) increased, while the polarization resistance (<em>Rₚ</em>) decreased with increasing Cl<sup>-</sup> concentration, indicating accelerated corrosion rate. In contrast, in ≥ 2 M H<sub>2</sub>SO<sub>4</sub> solutions, <em>i</em><sub><em>corr</em></sub> decreased and <em>Rₚ</em> increased with increasing Cl<sup>-</sup> concentration up to approximately 0.5–1.0 M, followed by a reversal in trend at higher chloride levels (≥ 1 M NaCl). The pitting susceptibility of the steel was strongly influenced by both parameters, increasing with Cl<sup>-</sup> concentration but diminishing with higher H<sub>2</sub>SO<sub>4</sub> concentrations. These results demonstrate a competitive interaction between Cl<sup>-</sup> and SO<sub>4</sub>²⁻ ions, where sulfate ions inhibit pitting, thereby improving the corrosion resistance of 304 stainless steel in relatively high acidic concentration media.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 1","pages":"Article 101257"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145616610","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}

引用次数: 0

Carbon nanotube/Bimetallic oxide-Copper-MOF (PdO-NiO-Cu-MOF-MWCNTs) composite for efficient hydrogen production from formic acid coupled with CO₂ utilization 碳纳米管/双金属氧化物-铜- mof （PdO-NiO-Cu-MOF-MWCNTs）复合材料用于甲酸高效制氢和CO₂利用

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-11-21 DOI: 10.1016/j.ijoes.2025.101250

Dina Thole , Kwena D. Modibane , Reineck Mhlaba , Sheriff A. Balogun , Ebrahiem Botha , Collen L. Makola , Nicholas M. Musyoka

{"title":"Carbon nanotube/Bimetallic oxide-Copper-MOF (PdO-NiO-Cu-MOF-MWCNTs) composite for efficient hydrogen production from formic acid coupled with CO₂ utilization","authors":"Dina Thole , Kwena D. Modibane , Reineck Mhlaba , Sheriff A. Balogun , Ebrahiem Botha , Collen L. Makola , Nicholas M. Musyoka","doi":"10.1016/j.ijoes.2025.101250","DOIUrl":"10.1016/j.ijoes.2025.101250","url":null,"abstract":"<div><div>Investigating new, effective, and useful catalysts continues to be a research and industrial need as the world's hunt for sustainable energy continues to grow. In particular, it has been demonstrated that metal-organic frameworks support the capture and electrochemical reversible reaction of CO₂-to-formic acid, with remarkable CO₂ capture capabilities. We present here the photocatalytic hydrogen production activity of a quaternary structure made up of bimetallic oxides, metal-organic frameworks, and carbon nanotubes. Comprehensive structure–performance correlations for the development of effective photocatalysts are provided by detailed characterization before and after catalysis. The best performance is shown by the quaternary composite, which achieves 99.9 % hydrogen selectivity with carbon dioxide capture and produces 21.2 mmol/g of hydrogen at a rate of 220 μmol/g/min. The present paper offers a promising approach to develop highly efficient and cost-effective low-dimensional photoelectrocatalysts for sustainable hydrogen production from formic acid with CO<sub>2</sub> capture, potentially tackling the challenges posed by the climate crisis.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 1","pages":"Article 101250"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145571101","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}

引用次数: 0

Investigation of the effect of chloride ions on the corrosion of DH36 steel in acidic solution 氯离子对DH36钢在酸性溶液中腐蚀影响的研究

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-11-10 DOI: 10.1016/j.ijoes.2025.101230

Jiantao Wang, Bochen Jiang

{"title":"Investigation of the effect of chloride ions on the corrosion of DH36 steel in acidic solution","authors":"Jiantao Wang, Bochen Jiang","doi":"10.1016/j.ijoes.2025.101230","DOIUrl":"10.1016/j.ijoes.2025.101230","url":null,"abstract":"<div><div>This study systematically investigates the corrosion behavior of DH36 steel under the combined influence of chloride (Cl⁻) and hydrogen (H⁺) ions, simulating marine splash zone environments. Electrochemical techniques—including potentiodynamic polarization measurements and electrochemical impedance spectroscopy (EIS)—coupled with microstructural analyses (SEM and EDS) were employed to evaluate corrosion mechanisms in NaCl solutions (1–7.5 wt%) and in acidic solutions containing 3.5 wt% NaCl with HCl concentrations ranging from 0 to 0.6 mol/L. Results reveal that with increasing Cl<sup>−</sup> concentration, the corrosion potential decreases from − 519 mV to − 588 mV and the corrosion current density increases from 0.0137 mA/cm² to 0.0279 mA/cm², indicating accelerated corrosion rates. Notably, at > 5 wt% NaCl, pit density surges to 11,440 pits/mm² (7.5 wt%), while pit size expands by ∼ 80 %. In acidic Cl⁻-rich environments (HCl ≥ 0.4 mol/L), corrosion intensifies, and corrosion products become porous, facilitating longitudinal grooves and deep pits. EIS data confirm decreased polarization resistance (e.g., R<sub>p</sub> drops from 4211 Ω·cm² to 2297 Ω·cm² in 7.5 wt% NaCl), and Warburg impedance emerges, signifying diffusion-controlled corrosion. The dominant mechanism involves electrochemical reactions where Cl⁻ and H⁺ act in concert to aggressively promote Fe dissolution via soluble complexes (e.g., [FeCl(OH)]⁻<sub>ad</sub>), while acidic conditions inhibit passivation. These findings highlight the critical vulnerability of DH36 steel in aggressive marine settings, providing essential insights for enhancing corrosion resistance in offshore structures.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 1","pages":"Article 101230"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682364","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}

引用次数: 0

Time-resolved electrochemical impedance spectroscopy study of calcium fluoride formation and ion transport dynamics in highly concentrated CaSO₄–NaF systems 高浓度硫酸钙-NaF体系中氟化钙形成及离子传递动力学的时间分辨电化学阻抗谱研究

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-11-21 DOI: 10.1016/j.ijoes.2025.101249

Meryem Bensemlali , Halima Mortadi , Abdellatif Aarfane , Abdoullatif Baraket , Abdelowahed Hajjaji , Fouad Belhora , Mina Bakasse , Najoua Labjar , Said Laasri , Hamid Nasrellah

{"title":"Time-resolved electrochemical impedance spectroscopy study of calcium fluoride formation and ion transport dynamics in highly concentrated CaSO₄–NaF systems","authors":"Meryem Bensemlali , Halima Mortadi , Abdellatif Aarfane , Abdoullatif Baraket , Abdelowahed Hajjaji , Fouad Belhora , Mina Bakasse , Najoua Labjar , Said Laasri , Hamid Nasrellah","doi":"10.1016/j.ijoes.2025.101249","DOIUrl":"10.1016/j.ijoes.2025.101249","url":null,"abstract":"<div><div>This work investigates the reaction kinetics in a highly concentrated (×50) mixture of calcium sulfate (CaSO₄) and sodium fluoride (NaF) using real-time, in-situ Electrochemical Impedance Spectroscopy (EIS) over 48 h. The primary objective was to establish the electrochemical profile and monitor ion transport dynamics under aggressive, non-equilibrium conditions designed to accelerate precipitation kinetics. Analysis of the complex conductivity spectra (σ′ and σ′′) and Nyquist plots, modeled with an equivalent electrical circuit R₁(R₂//CPE), revealed two distinct kinetic regimes. The temporal evolution of the dc conductivity (σ₀) showed an initial decrease, followed by a rise, culminating in stabilization after approximately 19 h. This stabilization is interpreted as the establishment of a dynamic equilibrium state. Concurrent trends in the high-frequency conductivity (σ∞), CPE exponent (p), and relaxation time (τ) suggest significant microstructural evolution within the system. While the electrochemical data are consistent with the expected precipitation of CaF₂ and provide a kinetic profile suggesting a potentially faster route to equilibrium than traditional methods, this study focuses on establishing EIS as a monitoring tool. Direct analytical confirmation of the solid phase and quantitative yield analysis are recognized as essential next steps and are the focus of immediate future work.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 1","pages":"Article 101249"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733572","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}

引用次数: 0

Artificial neural network modeling of electrochemical noise for predicting corrosion resistance of AA2024-AZ31 alloy in chloride solutions with cerium(III) nitrate hexahydrate 电化学噪声的人工神经网络建模预测AA2024-AZ31合金在六水硝酸铈（III）氯化物溶液中的耐蚀性

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-11-27 DOI: 10.1016/j.ijoes.2025.101253

A. Parrales , Sung-Hyuk Cha , J.M. Angeles , D.E. Millán-Ocampo , R. López-Sesenes , J.A. Hernández

{"title":"Artificial neural network modeling of electrochemical noise for predicting corrosion resistance of AA2024-AZ31 alloy in chloride solutions with cerium(III) nitrate hexahydrate","authors":"A. Parrales , Sung-Hyuk Cha , J.M. Angeles , D.E. Millán-Ocampo , R. López-Sesenes , J.A. Hernández","doi":"10.1016/j.ijoes.2025.101253","DOIUrl":"10.1016/j.ijoes.2025.101253","url":null,"abstract":"<div><div>In this study, artificial neural networks were proposed and applied to estimate the noise resistance (<span><math><msub><mrow><mi>R</mi></mrow><mrow><mi>n</mi></mrow></msub></math></span>) of the AA2024–AZ31 alloy exposed to 0.05 M NaCl with 0, 2, 4, 6, 8, and 10 mM of cerium(III) nitrate hexahydrate. Three pseudo-random number generators (MCG16807, MLF6331, and Mersenne Twister), two preprocessing strategies (normalization and standardization), and several transfer functions were evaluated to determine their impact on predictive accuracy. The Mersenne Twister method, combined with standardization, produced the most consistent results. The best performance was achieved with the dSiLU transfer function and seven neurons with a determination correlation (<span><math><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>) of 0.998 and an RMSE of 33.363. Meanwhile, the Sinc-Squared function yielded results comparable to the best model.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 1","pages":"Article 101253"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682366","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}

引用次数: 0

Front Matter1:Full Title Page 封面1：完整的标题页

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2026-01-13 DOI: 10.1016/S1452-3981(26)00008-8

引用次数: 0

Silver-coated polypyrrole/indium oxide (Ag-PPY/In₂O₃) nanocomposites for humidity sensing 用于湿度传感的镀银聚吡咯/氧化铟（Ag-PPY/In₂O₃）纳米复合材料

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-01-01 Epub Date: 2025-11-26 DOI: 10.1016/j.ijoes.2025.101254

Kusuma D. , Raghavendra S.C. , Revanasiddappa M. , Raghavendra N.

{"title":"Silver-coated polypyrrole/indium oxide (Ag-PPY/In₂O₃) nanocomposites for humidity sensing","authors":"Kusuma D. , Raghavendra S.C. , Revanasiddappa M. , Raghavendra N.","doi":"10.1016/j.ijoes.2025.101254","DOIUrl":"10.1016/j.ijoes.2025.101254","url":null,"abstract":"<div><div>The development of sustainable humidity sensors is crucial for next-generation electronics and telecommunication systems. In this study, silver-coated polypyrrole (Ag–PPy) nanocomposites integrated with indium oxide (In₂O₃, 2–10 wt%) were synthesized via a green route using phytochemical-rich green tea extract as a natural reducing and stabilizing agent. This eco-friendly approach enabled controlled nanoparticle formation while minimizing hazardous by-products. Comprehensive structural and morphological characterization confirmed the successful fabrication of hybrid nanocomposites with tunable physicochemical properties. Humidity-sensing investigations revealed that increasing In₂O₃ content enhanced baseline resistance and sensitivity. Composites containing 6 % and 10 % In₂O₃ exhibited sharp decreases in resistance with increasing relative humidity, demonstrating superior sensitivity, whereas the 2 % composite provided a stable, reversible response, ensuring reliable operation. The improved sensing performance arises from the synergistic effects of the conductive PPy framework, plasmonic Ag, and semiconducting In₂O₃, which collectively facilitate charge transport and water adsorption. These findings highlight Ag–PPy/In₂O₃ nanocomposites as promising eco-engineered materials for humidity sensing in flexible electronics, environmental monitoring, and smart communication technologies.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 1","pages":"Article 101254"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145616611","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}

引用次数: 0