International Journal of Electrochemical Science最新文献

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Effect of reaction time on the morphology and electrochemical performance of Co₃O₄/Carbon cloth cathodes for zinc-ion batteries 反应时间对Co₃O₄/碳布锌离子电池阴极形态及电化学性能的影响
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-23 DOI: 10.1016/j.ijoes.2025.101215
Kefan Wu, Zhe Wang, Yujia Wang, Ying Ma, Tianran Lin, Youfeng Zhang
{"title":"Effect of reaction time on the morphology and electrochemical performance of Co₃O₄/Carbon cloth cathodes for zinc-ion batteries","authors":"Kefan Wu,&nbsp;Zhe Wang,&nbsp;Yujia Wang,&nbsp;Ying Ma,&nbsp;Tianran Lin,&nbsp;Youfeng Zhang","doi":"10.1016/j.ijoes.2025.101215","DOIUrl":"10.1016/j.ijoes.2025.101215","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries (AZIBs) show great promise for applications in smart grid energy storage, power tools, and other fields. Among various cathode materials, Co₃O₄ stands out as an ideal candidate. However, while many studies have focused on the synthesis, design, and doping of cathode materials, the influence of synthesis parameters such as hydrothermal reaction time on morphology and electrochemical performance has been less explored. In this study, Co₃O₄/CC cathode materials were fabricated on carbon cloth via hydrothermal reactions with different durations: 3, 4, 6, and 8 h. The electrode synthesized over 8 h exhibited the best battery performance. It featured uniformly distributed Co₃O₄ nanowires with a regular surface and small dimensions on the carbon cloth. The corresponding Zn-ion battery demonstrated excellent rate capability and low reaction resistance. Within a voltage window of 0.01–2.2 V, the initial discharge specific capacity reached 108.2 mAh/g at a current density of 1 A/g. After 60 charge–discharge cycles, the specific capacity increased to 142.6 mAh/g, indicating good cycling stability. This work provides optimized hydrothermal reaction conditions for preparing high-performance Co₃O₄ cathodes for zinc-ion batteries.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 12","pages":"Article 101215"},"PeriodicalIF":2.4,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360449","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
Electrochemical evaluation of nanostructured coatings for corrosion protection of structural metals 纳米结构金属防腐涂层的电化学评价
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-20 DOI: 10.1016/j.ijoes.2025.101214
Qianqian Wang
{"title":"Electrochemical evaluation of nanostructured coatings for corrosion protection of structural metals","authors":"Qianqian Wang","doi":"10.1016/j.ijoes.2025.101214","DOIUrl":"10.1016/j.ijoes.2025.101214","url":null,"abstract":"<div><div>Corrosion of steel and other construction metals represents a critical threat to infrastructure durability, and recent advances in nanotechnology have inspired a new generation of protective coatings with superior performance. This review provides a comprehensive analysis of electrochemical methods used to evaluate nanocoatings (nanostructured coatings and nano-additive-modified coatings) and highlights how different classes of nanoscale materials improve corrosion resistance. Techniques such as potentiodynamic polarization, electrochemical impedance spectroscopy, linear polarization resistance, and localized probes not only quantify reductions in corrosion current and increases in charge-transfer resistance, but also clarify the mechanisms by which nanostructured additives function. Inorganic nanoparticles such as silica, titania, and ceria enhance barrier density and adhesion, while layered clays and double hydroxides impart both tortuous diffusion paths and inhibitor release capability. Carbon-based nanomaterials, including graphene, graphene oxide, and carbon nanotubes, offer unique two-dimensional or fibrous architectures that create highly effective barriers, though their long-term behavior depends strongly on dispersion, orientation, and defect control. Conductive polymers and hybrid composites integrate active passivation with structural reinforcement, and self-healing nanocontainer systems demonstrate the ability to autonomously restore protection at damaged sites. By comparing diverse strategies, this review emphasizes the interplay between barrier effects, active inhibition, and mechanical reinforcement, while also recognizing the challenges of durability, scalability, and environmental safety. Overall, electrochemical insights have advanced both the understanding and optimization of nanocoatings, guiding the design of multifunctional systems that can extend service life and reduce maintenance costs for critical infrastructure.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 12","pages":"Article 101214"},"PeriodicalIF":2.4,"publicationDate":"2025-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360448","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
Electrochemical oxidation of four pharmaceutical pollutants using Ti/IrO2 and Nb/BDD anodes: Application of factorial design methodology 用Ti/IrO2和Nb/BDD阳极电化学氧化四种药物污染物:析因设计方法的应用
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-17 DOI: 10.1016/j.ijoes.2025.101211
Akotto Achiepo Gaetan , Briton Bi Gouessé Henri , Ngoma Tsaty Veronique junior , Yao Kouassi Benjamin , Drogui Patrick
{"title":"Electrochemical oxidation of four pharmaceutical pollutants using Ti/IrO2 and Nb/BDD anodes: Application of factorial design methodology","authors":"Akotto Achiepo Gaetan ,&nbsp;Briton Bi Gouessé Henri ,&nbsp;Ngoma Tsaty Veronique junior ,&nbsp;Yao Kouassi Benjamin ,&nbsp;Drogui Patrick","doi":"10.1016/j.ijoes.2025.101211","DOIUrl":"10.1016/j.ijoes.2025.101211","url":null,"abstract":"<div><div>The simultaneous oxidation of four PhCs (Carbamazepine (CBZ), Caffeine (CAF), Ibuprofen (IBU), and Diclofenac (DFC)) has been investigated by electrochemical oxidation process using Ti/IrO<sub>2</sub> and Nb/BDD anode electrodes, respectively. The initial concentration of each PhCs was 69 µg/L. The effectiveness of the electro-oxidation process was due to its capability of oxidizing PhCs at the anode surface and in solution. A factorial experimental design was used for determining the influent parameters on the PhCs degradation. Four factors were investigated: supporting electrolyte concentration, current density, period of electrolysis and anode type. Anode type and treatment time were the most influent parameters on the electrochemical degradation of pollutants. By using a 2<sup>4</sup> factorial design, the best performance for PhCs degradation (more than 99 % of each PhC removed) was obtained by using boron doped diamond anode electrode (BDD) operated at a current density of 5.24 mA/cm<sup>2</sup> during 70 min of period treatment time in the presence of 1.0 g Na<sub>2</sub>SO<sub>4</sub>/L. However, the period of treatment time could be five times reduced (to simultaneously remove around 100 % of each PhC) while using NaCl as supporting electrolyte (instead of Na<sub>2</sub>SO<sub>4</sub>). This was mainly attributed to the combination of direct and indirect effect of electrolysis, more effective in the case of NaCl used as supporting electrolyte compared to Na<sub>2</sub>SO<sub>4</sub>. The direct effect of electrolysis contributed to oxidize 40–80 % of PhCs (namely for DFC, IBU and CAF), whereas more than 99 % of CBZ could be oxidized owing to the sole direct effect of electrolysis.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 12","pages":"Article 101211"},"PeriodicalIF":2.4,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360450","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
Study on improving the inner surface quality of laser powder bed fusion-fabricated Hastelloy X by electrochemical polishing 电化学抛光提高激光粉末床熔敷哈氏合金X内表面质量的研究
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-16 DOI: 10.1016/j.ijoes.2025.101213
Weiye Hu , Yanliang Li , Xiaoyun Hu , Yongbin Zeng
{"title":"Study on improving the inner surface quality of laser powder bed fusion-fabricated Hastelloy X by electrochemical polishing","authors":"Weiye Hu ,&nbsp;Yanliang Li ,&nbsp;Xiaoyun Hu ,&nbsp;Yongbin Zeng","doi":"10.1016/j.ijoes.2025.101213","DOIUrl":"10.1016/j.ijoes.2025.101213","url":null,"abstract":"<div><div>Although laser powder bed fusion (LPBF) exhibits significant advantages in forming complex structures, its application in precision engineering is severely constrained by poor surface quality. This study aims to enhance the surface quality of LPBF-fabricated Hastelloy X through electrochemical polishing (ECP) using eco-friendly NaCl-aqueous and NaCl-ethylene glycol (NaCl-EG) electrolytes. The effects of electrolyte composition and current density on electrochemical dissolution behavior were experimentally investigated. ECP parameters were optimized through a comprehensive evaluation of surface roughness, material removal rate (MRR), and thickness reduction. The results indicate that the formation of a supersaturated salt film in the NaCl-EG electrolyte can suppress the uneven dissolution of carbides and matrix, but its improvement on roughness is limited. Compared with the NaCl-EG electrolyte, the NaCl-aqueous electrolyte achieves comparable surface roughness while increasing the MRR by at least 336.21 %. Furthermore, to address the challenge of polishing internal cavity surfaces of LPBF parts, a conformal tool electrode design strategy is proposed. Through this approach, partially melted particles on the inner surface of curved channels were successfully removed, reducing the surface roughness Sa from 7.16 to 11.91 μm to 1.63–1.95 μm. This extends the application potential of ECP for polishing complex internal channels in LPBF components.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 12","pages":"Article 101213"},"PeriodicalIF":2.4,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145335185","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
Microwave-assisted synthesis of high-performance Na₃V₂(PO₄)₃/C cathode for sodium-ion batteries 钠离子电池高性能Na₃V₂(PO₄)₃/C阴极的微波辅助合成
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-15 DOI: 10.1016/j.ijoes.2025.101204
Jingjing Cai , Liwei Chen , Yanfei Zeng , Shimiao Wang , Haijun Liu , Hongyu Li
{"title":"Microwave-assisted synthesis of high-performance Na₃V₂(PO₄)₃/C cathode for sodium-ion batteries","authors":"Jingjing Cai ,&nbsp;Liwei Chen ,&nbsp;Yanfei Zeng ,&nbsp;Shimiao Wang ,&nbsp;Haijun Liu ,&nbsp;Hongyu Li","doi":"10.1016/j.ijoes.2025.101204","DOIUrl":"10.1016/j.ijoes.2025.101204","url":null,"abstract":"<div><div>As a promising next-generation energy storage system, sodium-ion batteries (SIBs) have attracted significant research attention following the commercialization of lithium-ion batteries, despite their current pre-commercialization status. The electrochemical performance of SIBs critically depends on cathode materials, among which polyanionic compounds have shown particular promise. Sodium vanadium phosphate (Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>) with an open three-dimensional framework has emerged as a competitive cathode candidate due to its structural stability, high theoretical capacity (117.6 mAh·g⁻¹), and elevated operating voltage (3.4 V vs. Na⁺/Na). This study presents a novel synthesis strategy for carbon-coated Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> composites, demonstrating remarkable electrochemical performance. The optimized material exhibits an initial discharge capacity of 119.2 mAh·g⁻¹ at 0.5 C rate, approaching its theoretical limit. More importantly, it maintains 96.6 % capacity retention after 100 cycles, showcasing exceptional cycling stability. The rational material design and enhanced sodium-ion diffusion kinetics achieved through carbon modification provide valuable insights for developing high-performance polyanionic cathode materials, potentially accelerating the practical implementation of SIB technology.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 11","pages":"Article 101204"},"PeriodicalIF":2.4,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332247","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
Corrosion behavior of electrodeposited Zn–Co and Zn–Co–Mo coatings on mild steel in NaCl solution 电沉积Zn-Co和Zn-Co - mo涂层对低碳钢在NaCl溶液中的腐蚀行为
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-14 DOI: 10.1016/j.ijoes.2025.101208
Ke Wang
{"title":"Corrosion behavior of electrodeposited Zn–Co and Zn–Co–Mo coatings on mild steel in NaCl solution","authors":"Ke Wang","doi":"10.1016/j.ijoes.2025.101208","DOIUrl":"10.1016/j.ijoes.2025.101208","url":null,"abstract":"<div><div>Vehicle body, particularly against chloride-containing environments such as de-icing salts, is a challenging task. The Zn-Co films are a potential and promising one for coated steel sheets, but a third alloying element in the Zn-Co alloys such as molybdenum greatly improves the performance of anticorrosive properties. In this study, the corrosion behavior and surface morphology of electrodeposited binary Zn-Co and ternary Zn-Co-Mo coatings on mild steel were examined. Coatings were electrodeposited from an acidic chloride solution containing sulphanilic acid (brightener) and gelatin (grain refiner). The chemical component of the coatings was verified by ICP-OES and EDS. Corrosion resistance was tested in 3.5 wt% NaCl solutions by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The surface morphology and chemical composition were characterized using scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). Results revealed that 1.7 wt% cobalt showed the highest improvement in binary alloy. The incorporation of molybdenum (∼ 1.0 wt%) resulted in a smoother, more uniform, and finer-grained ternary coating. Electrochemical studies resulted in noteworthy decrease in corrosion current density and increase charge transfer resistance for Zn-Co-Mo. The XPS analysis also evidences the presence of stable, molybdenum-enriched passive oxide layers which block chloride ion ingress. The ternary Zn-Co-Mo coating (containing 1.7 wt% Co and 1.0 wt% Mo) shows excellent corrosion resistance in chloride environment by the creation of a dense and stable passive film, as it finds potential application for corrosion protection of car parts in automotive industry.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 11","pages":"Article 101208"},"PeriodicalIF":2.4,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332170","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
Recent progress of electrochemical sensors for accurate detection of heavy metal ions in water: A comprehensive review 电化学传感器精确检测水中重金属离子的研究进展综述
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-14 DOI: 10.1016/j.ijoes.2025.101209
Jing Liu , Yuan Yin , Gang Liu
{"title":"Recent progress of electrochemical sensors for accurate detection of heavy metal ions in water: A comprehensive review","authors":"Jing Liu ,&nbsp;Yuan Yin ,&nbsp;Gang Liu","doi":"10.1016/j.ijoes.2025.101209","DOIUrl":"10.1016/j.ijoes.2025.101209","url":null,"abstract":"<div><div>Water pollution represents a critical global environmental challenge, with heavy metal ions constituting a major class of contaminants. These toxic ions enter the human body through multiple pathways, including the consumption of contaminated drinking water, dermal contact, and bioaccumulation in the food chain. Once introduced, they pose severe health risks due to their high toxicity, strong bioaccumulation potential, and slow excretion rate. Such characteristics enable them to accumulate over time, creating long-term threats to both ecosystems and public health. Addressing these risks requires the development of highly sensitive, accurate, and reliable detection methods to monitor and identify heavy metal pollutants effectively, thereby ensuring environmental monitoring and public health protection. The growing prominence of electrochemical sensing devices in the identification and quantification of toxic metal ions is attributed to their low cost, high selectivity, exceptional sensitivity, and ability to achieve very low detection limits. This review provides a comprehensive overview of recent developments in electrochemical sensing platforms for monitoring heavy metals in aqueous environments and identifies emerging directions for future research. The review is structured to first examine electrode fabrication strategies, detailing the properties of electrodes and the characteristics of electrodes produced through various methods. Next, it reviews research progress concerning the modification of electrodes, emphasizing a variety of modifying materials, including inorganic compounds, organic frameworks, and biomaterials. Subsequently, progress in the supporting analytical frameworks is discussed, including signal recognition, data processing, and predictive modeling algorithms that enable intelligent analysis. Finally, current trends in electrochemical sensing are summarized, and perspectives are offered for the development of novel electrochemical sensor technologies for reliable and precise detection of heavy metal ions.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 11","pages":"Article 101209"},"PeriodicalIF":2.4,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332165","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
Detection and quantitative assessment of internal short circuits in lithium-ion battery packs based on differential voltage analysis and mahalanobis distance 基于差分电压分析和马氏距离的锂离子电池组内部短路检测与定量评估
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-14 DOI: 10.1016/j.ijoes.2025.101212
Junkun Zhang , Li Jin , Zhongao Wang , Quanhui Li , Xiaoxue Yan , Ertao Lei , Kai Ma , Chao Lyu
{"title":"Detection and quantitative assessment of internal short circuits in lithium-ion battery packs based on differential voltage analysis and mahalanobis distance","authors":"Junkun Zhang ,&nbsp;Li Jin ,&nbsp;Zhongao Wang ,&nbsp;Quanhui Li ,&nbsp;Xiaoxue Yan ,&nbsp;Ertao Lei ,&nbsp;Kai Ma ,&nbsp;Chao Lyu","doi":"10.1016/j.ijoes.2025.101212","DOIUrl":"10.1016/j.ijoes.2025.101212","url":null,"abstract":"<div><div>Accurate and prompt diagnosis of internal short circuits at an early stage is critical for preventing severe safety incidents and ensuring the reliability and safety of lithium-ion batteries. However, existing early-stage internal short-circuit diagnosis methods often rely heavily on high-precision battery models and large volumes of high-quality labeled training data, limiting their practicality and robustness in real-world applications. To address these limitations, this paper proposes a novel method for early detection and quantitative assessment of internal short circuits in lithium-ion battery packs, based on differential voltage (DV) analysis and Mahalanobis distance. The proposed approach extracts a median DV curve from the sorted terminal voltages of individual cells within a battery pack, which serves as a reference to characterize the normal cell behavior. The Mahalanobis distance between each cell's DV curve and the reference curve is then calculated and compared against a threshold to distinguish short-circuited cells from healthy ones. For the identified faulty cells, the short-circuit current and resistance are estimated by analyzing the differences between charging voltage curves across adjacent cycles, enabling precise quantification of fault severity. Experimental validation is conducted using simulated internal short circuits with varying severities. Results show that the proposed method can accurately detect short-circuited cells when the short-circuit resistance is less than or equal to 300 Ω. The maximum and minimum relative errors of short-circuit resistance estimation are 5.21 % and 1.20 %, respectively, demonstrating the effectiveness and accuracy of the proposed method.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 11","pages":"Article 101212"},"PeriodicalIF":2.4,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332168","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 corrosion inhibition of X42 carbon steel in CO₂-saturated brine using phaseolus vulgaris L. Bean extract 菜豆提取物对X42碳钢在CO 2饱和盐水中的缓蚀作用研究
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-14 DOI: 10.1016/j.ijoes.2025.101210
Abdul Samad Ridha Rashid , Shahin Khameneh Asl , Hamed Asgharzadeh , Taher Rabizadeh , Adel K. Mahmoud
{"title":"Investigation of the corrosion inhibition of X42 carbon steel in CO₂-saturated brine using phaseolus vulgaris L. Bean extract","authors":"Abdul Samad Ridha Rashid ,&nbsp;Shahin Khameneh Asl ,&nbsp;Hamed Asgharzadeh ,&nbsp;Taher Rabizadeh ,&nbsp;Adel K. Mahmoud","doi":"10.1016/j.ijoes.2025.101210","DOIUrl":"10.1016/j.ijoes.2025.101210","url":null,"abstract":"<div><div>This study introduces a green corrosion inhibitor derived from white bean (Phaseolus vulgaris L.) extract (PVL), an abundant agricultural source, for X42 carbon steel in a CO₂-saturated 3.5 wt% NaCl solution. The anticorrosion performance of the synthesized PVL-extract was evaluated over a concentration range of 50–1000 ppm using weight loss, electrochemical polarization, and impedance spectroscopy (EIS). According to the results, the optimal concentration was 500 ppm, which reduced the corrosion rate by 95.9 ± 8.8 % (from 34.0 ± 2.0 mpy to 1.4 ± 0.3 mpy) and the corrosion current density by 94 ± 1 % (from 12.1 ± 0.2 µA/cm² to 0.7 ± 0.09 µA/cm²), while increasing charge transfer resistance by 88.8 ± 3.6 % (from 330 ± 5 Ω·cm² to 623 ± 7 Ω·cm²). Considering various adsorption isotherms, it was determined that the adsorption of PVL-extract on the carbon steel substrate obeyed the Langmuir adsorption isotherm. AFM provided quantitative surface analysis, revealing a dramatic reduction in average roughness (Sa) from 78 nm (<em>Ra</em> = 285 nm) on the blank coupon to just 0.86 nm (<em>Ra</em> = 5.6 nm) on the sample protected by 500 ppm PVL-extract. This profound smoothing effect was also visually confirmed by SEM. FTIR spectroscopy confirmed the adsorption of the tested inhibitor on the surface of the tested coupons, and UV-Vis spectroscopy verified the formation of inhibitor-iron complexes.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 11","pages":"Article 101210"},"PeriodicalIF":2.4,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332169","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
Failure mechanisms and corrosion behavior of epoxy-based protective coatings prepared on 20# steel exposed to cooling water 20#钢环氧基保护涂层在冷却水中的失效机理及腐蚀行为
IF 2.4 4区 化学
International Journal of Electrochemical Science Pub Date : 2025-10-13 DOI: 10.1016/j.ijoes.2025.101207
Kai Ren , Jie Zhang , Yangyang Liu , Qingle Hou , Ruiyong Zhang , Mathivanan Krishnamurthy , Zeyu Zuo , Yunyan Zhao , Zhenhua Yu
{"title":"Failure mechanisms and corrosion behavior of epoxy-based protective coatings prepared on 20# steel exposed to cooling water","authors":"Kai Ren ,&nbsp;Jie Zhang ,&nbsp;Yangyang Liu ,&nbsp;Qingle Hou ,&nbsp;Ruiyong Zhang ,&nbsp;Mathivanan Krishnamurthy ,&nbsp;Zeyu Zuo ,&nbsp;Yunyan Zhao ,&nbsp;Zhenhua Yu","doi":"10.1016/j.ijoes.2025.101207","DOIUrl":"10.1016/j.ijoes.2025.101207","url":null,"abstract":"<div><div>Protective organic coatings are essential for extending the service life and ensuring the safe, low-carbon operation of industrial circulating-cooling-water heat exchangers. Yet prolonged exposure to high-temperature recirculating water accelerates coating degradation and substrate corrosion, while the underlying galvanic mechanisms remain insufficiently understood. Here, we elucidate these mechanisms by immersing epoxy-coated 20# carbon steel in 40 °C cooling water for 40 days, focusing on localized coating damage with an anode-area ratio of 1:2 (small vs. large anode). During immersion, the coating thickness declined to 96.04 µm and 93.12 µm for the small-anode and large-anode specimens, respectively, while blister density surged by day 20–5.1 n cm<sup>−2</sup> and 5.3 n cm<sup>−2</sup>. Substrate corrosion rates reached 1.143 mm a<sup>−1</sup> (small anode) and 1.048 mm a<sup>−1</sup> (large anode). The small anode exhibited a markedly stronger “small-anode effect,” generating higher galvanic current density, deeper pits, and more severe localized attack. Corrosion followed a dynamic “film formation-breakdown-reformation” cycle in which iron-based products such as Fe<sub>2</sub>O<sub>3</sub>, β-FeOOH, and Fe(OH)<sub>3</sub> initially accelerated anodic dissolution, subsequently compacted to form a temporary barrier, and ultimately underwent delamination. By revealing how localized coating failure and galvanic coupling synergistically intensify corrosion and by clarifying the transient protective role of corrosion products, this study advances the fundamental understanding of galvanic corrosion kinetics and provides a mechanistic framework for designing next-generation coatings and predictive-maintenance strategies, thereby driving progress in corrosion science and engineering.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 11","pages":"Article 101207"},"PeriodicalIF":2.4,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332172","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
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