International Journal of Electrochemical Science最新文献

{"title":"Voltammetric analysis of As3+ and sulfamethoxazole on an electrode modified with a composite of carbon dots and graphitic carbon nitride","authors":"Theo H.G. Moundzounga ,&nbsp;Moses G. Peleyeju ,&nbsp;Benjamin O. Orimolade ,&nbsp;Abimbola M. Olatunde ,&nbsp;Winny K. Maboya ,&nbsp;Samson O. Akpotu ,&nbsp;Muntuwenkosi M. Chili ,&nbsp;Michael J. Klink","doi":"10.1016/j.ijoes.2025.100947","DOIUrl":"10.1016/j.ijoes.2025.100947","url":null,"abstract":"<div><div>The need to monitor priority pollutants in the aqueous environments cannot be overemphasised. Herein, we employed a glassy carbon electrode (GCE) modified with a nanocomposite of carbondots (CDs) and graphitic carbon nitride (g-C₃N₄) for the determination of arsenic(III) and sulfamethoxazole (SMX) in aqueous media. The composite material, synthesised by microwave technique, was characterised by transmission electron microscopy and X-ray diffraction. The electrochemical behaviours of the modified glassy electrode were also investigated using cyclic voltammetry (CV) and differential pulsed voltammetry. The findings indicated that the constructed g-C₃N_{4/CDs/GCE electrode markedly improved the oxidation peak currents of both analytes,} suggesting enhanced sensitivities. Notably, the working ranges and detection limits obtained for arsenic (III) were 2 – 10 and 1.64 μM and 0.3 – 0.1 and 0.10 μM for SMX, respectively. Though, copper, cadmium, lead and zinc were observed to interfere with the determination of As³⁺, but EDTA was used to mask these interfering effects of the cations. The modified electrode (g- C₃N_{4/CDs/GCE) was used to quantify arsenic and SMX in spiked aqueous solution by standard} addition and percentage recoveries of 98–100% and 80–105% were recorded for As³⁺ and SMX respectively. Thus, the findings of this study established that the investigated nanocomposite material represents an easy and sensitive platform for the determination of As³⁺ and SMX in the aqueous environments to curb environmental pollution.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100947"},"PeriodicalIF":1.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of low-complexity algorithms for assessing lithium-ion battery charging based on state of health metrics","authors":"Shun-Chung Wang ,&nbsp;Chun-Liang Liu ,&nbsp;Guan-Jhu Chen ,&nbsp;Yi-Hua Liu ,&nbsp;Jyun-Hong Chen ,&nbsp;Yu-Chin Kao","doi":"10.1016/j.ijoes.2025.100946","DOIUrl":"10.1016/j.ijoes.2025.100946","url":null,"abstract":"<div><div>Lithium-ion batteries are crucial for portable devices like smartphones and laptops, as well as electric vehicles like e-bikes and cars. However, commercial products often opt for simple charging methods without considering the specific demands of different battery states of health. This study evaluates five simple charging methods under varying battery health conditions, based on six performance indicators: maximum temperature rise, average temperature rise, charge capacity, discharge capacity, charge rate, and charge efficiency. The five methods include constant current-constant voltage charging, constant power-constant voltage charging, and constant loss-constant voltage charging. The study also proposes a states of health estimation method for the charging techniques, using a neural network to build a battery states of health estimator. The results show a maximum relative error of 4.12 %, a minimum relative error of 0.1 %, an average relative error of 0.98 %, and a root mean square error of 1.35 %.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100946"},"PeriodicalIF":1.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Vitis vinifera seed oil as a green corrosion inhibitor for high-carbon steel and ferrovanadium alloys in sulfuric acid","authors":"Roland Tolulope Loto,&nbsp;Ordinakachukwu Uvemena Uyanwune,&nbsp;Ayomide Oreoluwa Oluwasesan,&nbsp;Ipinnuoluwa Joseph Oladipo,&nbsp;Marshal Emokpare Agbi","doi":"10.1016/j.ijoes.2025.100936","DOIUrl":"10.1016/j.ijoes.2025.100936","url":null,"abstract":"<div><div>The corrosion inhibition performance of <em>Vitis vinifera</em> seed oil (VVSO) was investigated on high-carbon steel (HCS) and ferrovanadium (FV) alloy in 0.25 M H₂SO₄ solution using gravimetric, potentiodynamic polarization, open circuit potential (OCP) measurements and optical microscopy. Gravimetric studies revealed superior inhibition efficiency on HCS, where corrosion rates decreased progressively with increasing VVSO concentration, reaching 95 % efficiency at 0.5 % VVSO after 360 h of exposure. In comparison, FV alloys exhibited moderate inhibition, peaking at 73.95 % at 2 % VVSO. Potentiodynamic polarization results confirmed mixed-type inhibition behavior, with significant reductions in corrosion current density for HCS, correlating with efficiencies exceeding 70 %. Conversely, for FV alloys, the highest inhibition efficiency of 72.95 % was recorded at 2 % VVSO, suggesting adsorption saturation at higher concentrations. Open circuit potential studies highlighted shifts to less negative potentials, indicative of enhanced corrosion resistance. For HCS, stabilization occurred around −0.490 V at 0.5 % VVSO, forming a protective layer, while for FV, the potential stabilized at −0.495 V at 3 % VVSO, demonstrating uniform inhibitor adsorption and reduced anodic dissolution. Overall, VVSO demonstrated concentration-dependent inhibition, exhibiting superior protection on HCS and moderate efficacy on FV as evident in the difference between the optical images of the inhibited and non-inhibited alloy surfaces. The findings underscore the potential of VVSO as an eco-friendly and effective corrosion inhibitor, with optimal performance influenced by substrate material and inhibitor concentration.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100936"},"PeriodicalIF":1.3,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of concrete cover thickness on steel corrosion in reinforced concrete: Insights from advanced imaging and material analysis","authors":"Jaber Taheri-Shakib ,&nbsp;Adil Al-Mayah","doi":"10.1016/j.ijoes.2025.100933","DOIUrl":"10.1016/j.ijoes.2025.100933","url":null,"abstract":"<div><div>This research manuscript presents a comprehensive analysis of the effects of cover thickness on the corrosion dynamics in reinforced concrete structures. Two distinct concrete cover thicknesses were studies namely: the small cover (SC) and the large cover (LC). Employing advanced 3D imaging techniques, X-ray Computed Tomography (CT), and material analysis methodologies, Scanning Electron Microscopy (SEM) equipped with Energy-Dispersive X-ray Spectroscopy (EDS) and Raman spectroscopy. This study delves into the corrosion process under accelerated conditions. The examination of point corrosion in both specimens highlights distinctive patterns influenced by the concrete cover thickness. The SC experiences point corrosion in larger pits within the corrosion zone of the steel reinforcement, resulting in interconnected 'wormholes' pathways that amplify localized corrosion effects. The LC displays a more dispersed pattern of point corrosion initiation within the corrosion zone of the steel reinforcement, with the resulting corrosion products remaining confined to their original locations. Analysis of crack formation reveals that SC exhibits an increase in cracks with branching, but their origins do not align with areas of maximum corrosion pit formation in the steel reinforcement. In contrast, LC displays a unique pattern of crack initiation, originating near pores and within the corrosion pits in the steel reinforcement, with smaller openings and limited branching, primarily guided by pore presence. The Raman spectroscopy analysis reveals that the predominant compounds in SC are iron hydroxides, primarily ferrihydrite with reduced crystallinity, indicating an ongoing corrosion process within the steel reinforcement. In contrast, the corrosion products in LC consist of iron oxides and iron hydroxides, reflecting a more complex corrosion process within the steel reinforcement.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100933"},"PeriodicalIF":1.3,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical simulation and experimental study on micromilling-assisted electrochemical machining","authors":"Xia Cao ,&nbsp;Yafeng He ,&nbsp;Sipeng Wang","doi":"10.1016/j.ijoes.2025.100934","DOIUrl":"10.1016/j.ijoes.2025.100934","url":null,"abstract":"<div><div>This study proposes a micromilling-assisted electrochemical machining method to obtain high-quality surfaces on a titanium alloy (Ti6Al4V). This method replaces the traditional mixed electrolyte composed of NaCl and NaNO₃ with a highly replication-accurate NaNO₃ electrolyte. The passive film on the titanium alloy surface was alternately removed by the cutting action of the micromilling cutters, ensuring smooth progress in electrochemical machining. A theoretical model of the cross-sectional profile of Ti6Al4V micromilling-assisted electrochemical machining was established, and dynamic numerical simulations and process experiments were conducted. The effects of machining voltage, feed speed, and spindle speed on the current density and machining depth were investigated. The results indicated that the machining depth increased with machining voltage and decreased with higher feed and spindle speeds. At a feed speed of 3 mm/min, processing voltage of 24 V, and spindle speed of 2000 r/min, the surface quality of the titanium alloy Ti6Al4V was high, achieving a surface roughness of 1.785 μm. The experimental cross-sectional profile of the composite processing depth aligned well with theoretical predictions.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100934"},"PeriodicalIF":1.3,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Point-of-care detection of Japanese encephalitis virus based on advanced electrochemical immunosensor","authors":"Ping Wang,&nbsp;Lijun Yue","doi":"10.1016/j.ijoes.2024.100905","DOIUrl":"10.1016/j.ijoes.2024.100905","url":null,"abstract":"<div><div>Japanese encephalitis virus (JEV) causes acute inflammation of the brain affecting ∼68,000 annually in Asia. While conventional diagnostics like ELISA take days, this work developed an electrochemical immunosensor for rapid JEV detection at point-of-care. The sensor relied on carbon nanoparticles (CNPs) electrodeposited on screen-printed carbon electrodes (SPCE) and covalently linked with anti-JEV antibodies. Systematic optimization resulted in the optimal antibody concentration of 20 μg/mL with 30 min incubation enabling detection down to 42 fg/mL. The dynamic range spanned 100 fg/mL to 100 ng/mL within analysis time of 30 min. The SPCE-based disposable strip format provided &lt; 8 % variability across electrodes. The CNP interface lowered detection limit by 10x versus earlier nanomaterial-assisted JEV sensors owing to high surface area and conductivity. Potential field deployment challenges include antibody stability for prolonged storage, validation across larger clinical cohorts, ease-of-use via integration with microfluidics/smartphones. Further robustification can enable rapid screening at point-of-care during outbreaks in resource-limited settings.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 1","pages":"Article 100905"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","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)00015-X","DOIUrl":"10.1016/S1452-3981(25)00015-X","url":null,"abstract":"","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 1","pages":"Article 100940"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Y₂O₃ content on microstructure, mechanical properties, and corrosion resistance of WC-Co hard alloys prepared by powder metallurgy","authors":"Li Zhiyong ,&nbsp;Azman Jalar ,&nbsp;Norinsan Kamil Othman","doi":"10.1016/j.ijoes.2024.100922","DOIUrl":"10.1016/j.ijoes.2024.100922","url":null,"abstract":"<div><div>The content of additive Y has a significant impact on the microstructure and mechanical properties of sintered cemented carbides prepared via powder metallurgy. However, the effects of Y content on the properties of cemented carbides remain poorly understood. This study investigates the effect of the content of Y₂O₃, introduced via a spray phase transformation process, on the microstructure, mechanical properties, and corrosion resistance of the WC-Co cemented carbide, to advance knowledge in this field. An ultrafine Co-based composite powder containing Y₂O₃ was synthesised using WC, (CH₃COO)₂Co·4 H₂O, and Y(C₂H₃O₂)₃·4 H₂O. The powder was prepared via spray conversion, calcination, oxidation, and low-temperature reduction. The WC-8Co-Y₂O₃ cemented carbide was fabricated through high-energy ball milling and spark plasma sintering to ensure the uniform distribution of the Co bonding phase. The spray transformation process produced irregular amorphous precursor powders containing Co and Y. After calcination, the powders exhibited a reduction in particle size and underwent agglomeration. The ball milling of the WC-8Co-Y₂O₃ composite powder with added WC further reduced the particle size and intensified agglomeration. An increase in the Y₂O₃ content resulted in grain refinement and an increase in the number of WC/Co grain boundaries, thereby improving the corrosion resistance of the alloy. The mechanical properties of the alloys exhibited a trend in which the density, Vickers hardness, and fracture toughness initially increased and then decreased with increasing Y₂O₃ content. At 1.5 wt% Y₂O₃, these properties reached their maximum values, achieving a relative density of 98.94 %, a Vickers hardness of 2034 HV30, and a fracture toughness of 8.39 MPa·m^1/2. The alloy also exhibited optimal corrosion resistance, with E_corr and i_corr values of −252 mV and 6.464 μA/cm², respectively. The presence of Y₂O₃ promoted the formation of an ultrafine Co phase, which mitigated dislocation motion, thereby enhancing the mechanical performance of the cemented carbide. These findings contribute to a comprehensive understanding of the contribution of Y to the properties of cemented carbides.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 1","pages":"Article 100922"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-dimensional electrode material for (photo)electrochemical reduction of CO2: An overview","authors":"Paulsamy Raja ,&nbsp;Tse-Wei Chen ,&nbsp;Shen-Ming Chen ,&nbsp;Palraj Kalimuthu ,&nbsp;Ganesan Anushya ,&nbsp;Rasu Ramachandran ,&nbsp;Abdullah G. Al-Sehemi ,&nbsp;Vinitha Mariyappan ,&nbsp;Saranvignesh Alargarsamy ,&nbsp;Mohammed Mujahid Alam ,&nbsp;Ajith Velraj ,&nbsp;Selvam Selvapriya ,&nbsp;Ramanujam Kannan","doi":"10.1016/j.ijoes.2024.100874","DOIUrl":"10.1016/j.ijoes.2024.100874","url":null,"abstract":"<div><div>Human-induced global warming poses one of the most urgent and critical challenges to our planet's atmosphere, ecosystems, and overall well-being. To combat this, we must focus on reducing our reliance on fossil fuels, thereby leading to a consequent decrease in atmospheric CO₂ levels. However, the endeavour to curb CO₂ emissions is riddled with obstacles, including sluggish kinetic reactions of the CO₂ conversion process and poor selectivity of the conventional methods. In addition, detecting CO₂ products and intermediates on a small scale presents a notable challenge within this field. The minute quantity of the CO₂ product has the potential to undergo further oxidation or evaporation, thereby complicating the detection process. Within the realm of CO₂ reduction methods, the photoelectrochemical (PEC) CO₂ conversion technique emerges as highly promising and feasible. This method facilitates precise control over the thermodynamics and kinetics of the CO₂ reduction process, thereby enabling improved product selectivity and accelerated reaction kinetics. Its emulation of natural photosynthesis with minimal energy input elevates its potential for widespread adoption. Nevertheless, there are certain limitations currently hindering its widespread application. In contrast, in recent years, 2D electrode materials have demonstrated promising results for PEC CO₂ conversion. The distinct mechanical, physical, and electrochemical properties of 2D materials hold significant promise as novel catalysts for CO₂ reduction. Furthermore, modifying the 2D electrode surface through techniques such as spin-coating, sputter coating, electrophoretic deposition, and electrochemical means can substantially enhance CO₂ reduction and facilitate the production of valuable by-products. These 2D-based composite materials present an innovative perspective, encapsulating their performance and the inherent challenges of this pioneering field.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 1","pages":"Article 100874"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photoelectrochemical sensing strategies for cardiovascular biomarkers: A review","authors":"Xiaoping Zhang ,&nbsp;Yaya Qin","doi":"10.1016/j.ijoes.2024.100906","DOIUrl":"10.1016/j.ijoes.2024.100906","url":null,"abstract":"<div><div>Cardiovascular diseases remain a critical global health challenge, necessitating advanced diagnostic tools for early detection and monitoring. This review comprehensively examines the emerging field of photoelectrochemical (PEC) sensing strategies for cardiovascular biomarker detection, highlighting recent technological innovations and applications. We analyze various PEC detection mechanisms, including direct label-free approaches and indirect amplification methods, emphasizing their roles in achieving enhanced sensitivity and specificity. The review explores crucial developments in semiconductor nanostructures, composite materials, and two-dimensional materials, detailing their integration into sensing platforms. Particular attention is given to recognition elements, including antibodies and aptamers, and their optimization for specific biomarker detection. Recent advances in signal amplification strategies, such as enzymatic labeling and nanoparticle-based enhancement, are discussed in the context of achieving clinically relevant detection limits. The review also addresses current technical challenges, including matrix effects in biological samples and long-term stability issues, while highlighting promising solutions through materials engineering and device design. Understanding these aspects is crucial for advancing PEC biosensor development toward practical clinical applications.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 1","pages":"Article 100906"},"PeriodicalIF":1.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}