Journal of Electroanalytical Chemistry最新文献

{"title":"Screen-printed textile substrates’ suitability as a platform for electrochemical sensors’ construction","authors":"Nuna G. Costa ,&nbsp;Cláudia S. Buga ,&nbsp;Natália Cândido Homem ,&nbsp;Antonio J. Paleo ,&nbsp;Vítor Sencadas ,&nbsp;Júlio C. Viana ,&nbsp;Arturo Gonzales ,&nbsp;Joana C. Antunes ,&nbsp;A.M. Rocha","doi":"10.1016/j.jelechem.2024.118805","DOIUrl":"10.1016/j.jelechem.2024.118805","url":null,"abstract":"<div><div>Electronic sensors are essential in applications like biosensors and fuel cells, providing rapid solutions for substance detection. Integrating electrochemical sensors into textiles offers advantages such as flexibility, comfort, and potential for wearable applications. This study explores the suitability of three textile substrates—100 % polyester knit mesh (S1), 100 % recycled polyester knit mesh (S2), and 50 % recycled polyester/50 % hemp fabric (S3)—for constructing screen-printed electrodes (SPEs). The goal is to develop a textile-based electrochemical sensor with a 3-electrode system (reference, auxiliary, and working electrode) using semi-automated screen printing. The electrochemical performance of two carbon inks, Elantas 9553 and DuPont BQ242, was evaluated to select the best working electrode (WE) ink. DuPont BQ242 was found most suitable for WE production, exhibiting quasi-reversible behavior and temperature stability. The electrochemical behavior of the textile-SPEs printed with DuPont BQ242 revealed that substrate S3 had superior properties, with higher peak currents (peak current ratio of 1.2) and smaller peak potential separation (602 n/V). Carbon Elantas 9553 was more sensitive to temperature changes (1 % variation) than the more stable DuPont BQ242 (0.03 % variation). The stability of the inks on substrates was examined using the 4-point probe method, highlighting excellent electrical stability under UV, high temperatures, cosmetics, and artificial sweat. The final textile-based SPE outperformed commercial SPEs, showing superior redox properties, with a peak potential separation (ΔEp) 56 % smaller and a relative standard deviation (RSD) of 1.58 % over 20 measurements. These textile-based SPEs present a valuable alternative to conventional rigid sensors, which are typically single-use and less durable.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118805"},"PeriodicalIF":4.1,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Equivalent Electrical Circuit recommendation for Electrochemical Impedance Spectroscopy: A benchmark of different Machine Learning algorithms","authors":"Fermín Sáez-Pardo,&nbsp;Juan José Giner-Sanz,&nbsp;Valentín Pérez-Herranz","doi":"10.1016/j.jelechem.2024.118812","DOIUrl":"10.1016/j.jelechem.2024.118812","url":null,"abstract":"<div><div>Electrochemical Impedance Spectroscopy (EIS) is a technique widely used in the electrochemistry field that allows assessing the kinetic parameters of electrochemical systems. In general, EIS spectra are analyzed using 2 methodologies: the physical–mathematical methodology and the Equivalent Electrical Circuit (EEC) methodology. The physical–mathematical methodology consists in developing and solving the set of differential equations that govern the system. In contrast, the EEC methodology describes EIS data in terms of EEC models, decreasing the math complexity and democratizing the use of the EIS technique. In the EEC methodology, the most critical task is selecting a physically sound EEC model. To help with the EEC model selection, Prof. Digby D. Macdonald proposed creating the Electrochemistry’s Genome Project, which would consist of a large database and an Artificial Intelligence (AI) able to suggest plausible EEC models given an EIS spectrum. Until now, several works have explored the idea of using Machine Learning (ML) for recommending an EEC for a given EIS spectrum. Indeed, several authors have benchmarked different ML algorithms for this task. However, these benchmarks generally report point estimates of the accuracy achieved by each algorithm, but do not assess its uncertainty.</div><div>In this work, we benchmarked different ML EEC recommendation algorithms. To achieve this, we refined a preexistent database, obtaining a new database. Then, the new database was used to train different ML algorithms, optimize their hyperparameters, and assess their accuracy. Finally, the performance of the different optimized algorithms were compared. Whereas most of the other benchmarks available in literature work with point estimates of the accuracies, in this work, the accuracy distributions have been estimated. This methodology allows to compare the performance of the different algorithms in a much more reliable and robust way.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118812"},"PeriodicalIF":4.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical template synthesis of hollow zinc oxide microtubes for photoelectrocatalytic water splitting: Effects of electrodeposition conditions and annealing temperature","authors":"D.S. Dmitriev,&nbsp;M.I. Tenevich,&nbsp;E.K. Khrapova","doi":"10.1016/j.jelechem.2024.118813","DOIUrl":"10.1016/j.jelechem.2024.118813","url":null,"abstract":"<div><div>In this paper, the problem of synthesizing hollow structures as a photoactive material for water electrolysis is addressed using the example of ZnO microtubes. In the study, a novel method of electrochemical template-assisted synthesis was applied to produce microtubes. The influence of zinc electrodeposition conditions (mode and electrolyte) and annealing on the photoelectrocatalytic (PEC) properties of the electrode material was evaluated. Samples prepared from citrate and zincate electrolytes were analyzed using scanning electron microscopy, energy dispersive X-ray mapping, X-ray diffraction, diffuse reflectance spectroscopy, photogalvanic response, voltammetry, and electrochemical impedance spectroscopy. The purpose of this paper was to demonstrate the advantages of using a citrate electrolyte over a classical zincate electrolyte for the electrochemical template method. It has been found that using citrate electrolyte allows for the production of ZnO microtubes that improve the PEC performance by 1.5–2 times. The effect of the synthesis conditions of the electrode material on the charge transfer resistance and diffusion limitations in the water splitting reaction is analyzed.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118813"},"PeriodicalIF":4.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen-doped mesoporous carbon for high-performance zinc-iodine batteries","authors":"Mingshuo Zhang,&nbsp;Yangzheng Hou,&nbsp;Yunjie Zhu,&nbsp;Manman Ren,&nbsp;Xiaoxia Cai,&nbsp;Qinze Liu,&nbsp;Congde Qiao,&nbsp;Weiliang Liu,&nbsp;Jinshui Yao","doi":"10.1016/j.jelechem.2024.118798","DOIUrl":"10.1016/j.jelechem.2024.118798","url":null,"abstract":"<div><div>Iodine-based aqueous zinc ion (Zn-I₂) batteries have received wider attention due to their excellent electrochemical reversibility, low cost and environmental friendliness. In this work, we report a polymeric nanocomposite with great potential for zinc-ion (Zn-I₂) water battery. Nitrogen-doped mesoporous carbon (NMC) was prepared using phenol, formaldehyde and melamine by a simple and easy sol–gel technique. The rich-pore structure is conducive to improving the adsorption effect of iodine and accelerating the wetting of electrolyte, ensuring the stability of battery during cycling process. The NMC/I₂ cathode material exhibits excellent electrochemical performance, which ensure rapid equilibration of iodine adsorption and dissolution in the electrolyte, showing 80.7 % capacity retention and 91mAh g⁻¹ reversible specific capacity after 100 cycles at 0.1 A g^-1.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118798"},"PeriodicalIF":4.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel hydrothermally fabricated alkaline earth metal and transition metal sulfide (BaS/CuS) composite: An electrode for supercapacitor application","authors":"Farhan Faisal ,&nbsp;Gaber A.M. Mersal ,&nbsp;Ahmed M. Fallatah ,&nbsp;Mohamed M. Ibrahim ,&nbsp;Salma Emaan ,&nbsp;Zeinhom M. El-Bahy","doi":"10.1016/j.jelechem.2024.118804","DOIUrl":"10.1016/j.jelechem.2024.118804","url":null,"abstract":"<div><div>The speedy utilization and exploitation of fossil fuels lead to establishment of an ecosystem marked by pollution and the depletion of energy resources. Nevertheless, expediting the progress of alternative approaches to generate energy and fabricate energy storage devices is crucial. In such cases, supercapacitors (SC) emerged as the most auspicious energy storage device in terms of performance. Supercapacitors can have their electrochemical efficiency enhanced by employing several electrode materials, including transition metal oxides, chalcogenides, perovskites, and spinel. As an electrode for improved SC applications, a new BaS/CuS composite was created in this work using a hydrothermal method. The physical characterizations confirmed the proof of successful fabrication. BET results show that the prepared composite of the BaS/CuS has enhanced surface area (87.4 m² g⁻¹). BaS/CuS composite electrode was tested in alkaline media via three electrode configurations, and it demonstrated the high C_s (908.7F/g at 1 A/g), high energy density, and power density of 68.6 Wh kg⁻¹ and 368.6 W kg⁻¹ respectively, and good cyclic stability. According to the previously described findings, the synthesized electrode is promising for supercapacitor use.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118804"},"PeriodicalIF":4.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic electrochemical performance of NdFeO3/rGO composite for enhanced oxygen and hydrogen evolution reactions","authors":"Khalid A. Alrashidi ,&nbsp;Iram Manzoor ,&nbsp;Abdul Ghafoor Abid ,&nbsp;Saikh Mohammad ,&nbsp;Muhammad Bilal ,&nbsp;Nadir Abbas ,&nbsp;Farooq Ahmad ,&nbsp;Jafar Hussain Shah","doi":"10.1016/j.jelechem.2024.118807","DOIUrl":"10.1016/j.jelechem.2024.118807","url":null,"abstract":"<div><div>The research delves into a comprehensive process for synthesizing and characterizing NdFeO₃, reduced graphene oxide (rGO), and their composite. In present work, the NdFeO₃/rGO composite is synthesized using ultrasonic methods. Subsequently, techniques such as FT-IR, XRD, SEM, EDX, and XPS univocally affirmed the synthesis of NdFeO₃/rGO. The pristine materials NdFeO₃, rGO, and NdFeO₃/rGO were investigated for oxygen evolution reaction (OER) and hydrogen evolution reaction. The findings reveal that the NdFeO₃/rGO composite exhibits superior OER and HER compared to individual components in the presence of 1 M KOH solution. The NdFeO₃/rGO at current densities of 100, 500 and 1000 mAcm⁻² displays lower overpotentials 220, 255 and 345 mV for OER and enhanced stability over extended testing periods for 80 h. Similarly, composite at current densities of 100, 500, and 1000 mAcm⁻² to acquire overpotentials of 206, 301, and 466 mV, respectively. The exalted electrocatalytic performance of NdFeO_3/rGO is related to the production of synergism between NdFeO₃ and rGO, promoting faster charge transfer kinetics and catalytic activity. Overall, the study underscores the potential of NdFeO₃/rGO as promising and inexpensive electrocatalysts for OER and HER, offering significant promise for applications in sustainable energy conversion.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118807"},"PeriodicalIF":4.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave-Assisted synthesis of CuxFe100-x/Carbon aerogel (x = 0, 30, 50, 70) with enhanced Electrocatalytic activity towards oxygen evolution reaction","authors":"Meryem Samancı ,&nbsp;Muhammad Asim ,&nbsp;Akbar Hussain ,&nbsp;Naveed Kausar Janjua ,&nbsp;Ayşe Bayrakçeken","doi":"10.1016/j.jelechem.2024.118811","DOIUrl":"10.1016/j.jelechem.2024.118811","url":null,"abstract":"<div><div>A simple and efficient microwave-assisted synthesis route was adopted for carbon aerogel (CA)-supported Cu and Fe catalysts for OER in alkaline media. Catalysts were characterized physically by ICP-MS, XRD, TEM, XPS, SEM, and EDX and electrochemically by CV, chronoamperometry, and EIS. The catalyst having the composition of Cu₃₀Fe₇₀/CA showed excellent activity towards OER with low overpotential (345 mV) and Tafel slope (92.5 mV dec⁻¹). Diffusion coefficient (D° = 2.1 × 10⁻⁸ cm² s⁻¹), mass transport coefficient (m_T = 2.8 × 10⁻⁴ cm s⁻¹), heterogeneous rate constant (k° = 5.7 × 10⁻⁴ cm s⁻¹), and electrochemically active surface area (0.0167 cm²) were obtained for Cu₃₀Fe₇₀/CA modified glassy carbon electrode. CV response in the non-faradic region showed that C_dl and electrochemical surface area (ECSA) of Cu₃₀Fe₇₀/CA increased ∼ 34 times compared to Fe/CA. This work suggests that adding up an optimum amount of Cu to the Fe/CA nanocomposite offers a cost-effective and efficient electrocatalyst for OER.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118811"},"PeriodicalIF":4.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrothermal synthesis of self-supported hierarchical microflowers of Co3O4 nanowires for potential supercapacitor application","authors":"Radhika S. Desai ,&nbsp;Vinayak S. Jadhav ,&nbsp;Pritam J. Morankar ,&nbsp;Sushant B. Patil ,&nbsp;Shivaji B. Sadale ,&nbsp;Sidharth R. Pardeshi ,&nbsp;Divya D. Lad ,&nbsp;Pramod S. Patil ,&nbsp;Chan-Wook Jeon ,&nbsp;Dhanaji S. Dalavi","doi":"10.1016/j.jelechem.2024.118800","DOIUrl":"10.1016/j.jelechem.2024.118800","url":null,"abstract":"<div><div>This study explores the synthesis of ultrathin flower architecture of spinel-structured Co₃O₄ electrodes, on nickel foam using a double hydrothermal method, followed by annealing at 250 °C for 4 h. We systematically investigate the effects of varying reaction times and additional Co²⁺ treatment during the second hydrothermal process on the morphology and electrochemical properties of Co₃O₄. Field emission scanning electron microscopy (FE-SEM) images confirm the formation of self-supported hierarchical flowers, characterized by sharp, spike-like nanowires (16–33 nm in diameter) arranged radially. The self-supported optimized hierarchical Co₃O₄ thin film, characterized by its unique architecture and substantial mass loading of 4.6 mg cm⁻², achieved an impressive specific capacitance of 749.48F g⁻¹ at a scan rate of 10 mV s⁻¹ (specific capacity of 182.16 mAh g⁻¹) in 2 M KOH electrolyte and retained 64 % of its initial capacitance after 5000 cycles. Furthermore, a symmetric device demonstrated the ability to illuminate a red LED for approximately 120 s when two devices were connected in series.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118800"},"PeriodicalIF":4.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Platinum group metals-based electrodes for high-performance lithium-oxygen batteries: A mini-review","authors":"Ntakadzeni Madima,&nbsp;Mpfunzeni Raphulu","doi":"10.1016/j.jelechem.2024.118799","DOIUrl":"10.1016/j.jelechem.2024.118799","url":null,"abstract":"<div><div>In the realm of energy storage, the evolution of lithium-oxygen (Li-O₂) batteries has garnered substantial attention, owing to their potential to revolutionize electric vehicles. For a long time, ideas for sustainable development have positioned platinum group metals (PGMs) as potentially revolutionary, especially in the automotive industry. Intended to enhance Li-O₂ battery performance, PGMs are appealing due to their catalytic activities and this might be a big step forward for the electrification automotive industry and possibly pave the way for longer-lasting batteries used for reasons other than transportation. Therefore, this review explores progressions in PGMs-based electrocatalysts used as electrode materials for Li-O₂ batteries, starting with an overview of the Li-O₂ battery principle and its challenges. It then examines in detail the utilization of PGMs-based electrocatalysts as electrode materials for improving Li-O₂ battery performance. Finally, it addresses the remaining hurdles preventing the full integration of PGMs into battery technologies, offering insights into the current status and future possibilities for PGMs in Li-O₂ battery technology.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"976 ","pages":"Article 118799"},"PeriodicalIF":4.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “A comprehensive electrochemical analysis revealing the surface oxidation behavior difference between pyrite and arsenopyrite” [J. Electroanal. Chem. 969 (2024) 118552]","authors":"Jialei Li ,&nbsp;Zhicheng Liu ,&nbsp;Shunfu Ao ,&nbsp;Shuai Ning ,&nbsp;Ruizeng Liu ,&nbsp;Wenqing Qin","doi":"10.1016/j.jelechem.2024.118728","DOIUrl":"10.1016/j.jelechem.2024.118728","url":null,"abstract":"","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118728"},"PeriodicalIF":4.1,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}