Journal of The Electrochemical Society最新文献

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Deciphering the Role of p-Type ZnCo2O4 Semiconductor Nanoflakes for Selective Enhancement of Voltammetric Responses Toward Redox Species System: Interfacial Electron-Transfer Kinetics and Adsorption Capacity 解密 p 型 ZnCo2O4 半导体纳米片在选择性增强氧化还原物种系统伏安反应中的作用:界面电子转移动力学和吸附容量
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-30 DOI: 10.1149/1945-7111/ad71fa
Xuan Dinh Ngo, Ngoc Huyen Nguyen, Thi Lan Huong Phung, Tuan Anh Nguyen, Nguyen Thanh Vinh, Quy Nguyen Van, Vinh Hoang Tran, Nhung Pham Tuyet, Anh-Tuan Le
{"title":"Deciphering the Role of p-Type ZnCo2O4 Semiconductor Nanoflakes for Selective Enhancement of Voltammetric Responses Toward Redox Species System: Interfacial Electron-Transfer Kinetics and Adsorption Capacity","authors":"Xuan Dinh Ngo, Ngoc Huyen Nguyen, Thi Lan Huong Phung, Tuan Anh Nguyen, Nguyen Thanh Vinh, Quy Nguyen Van, Vinh Hoang Tran, Nhung Pham Tuyet, Anh-Tuan Le","doi":"10.1149/1945-7111/ad71fa","DOIUrl":"https://doi.org/10.1149/1945-7111/ad71fa","url":null,"abstract":"In this study, we describe experimental efforts to decipher the role of ZnCo<sub>2</sub>O<sub>4</sub> nanoflakes (ZCO-NFs) for selective enhancement of voltammetric responses of screen-printed electrode (SPE) toward redox species system. The ZCO-NFs sample was characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and UV–vis spectroscopy. The electrochemical characterization of bare SPE and modified SPE electrodes was investigated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and Mott−Schottky analysis. A series of redox systems including paracetamol (PA), dopamine (DA), chloramphenicol (CAP), furazolidone (FZD), p-nitrophenol (p-NP), carbaryl (CBR), ofloxacin (OXF), and erythromycin (ERY) were selected to investigate for (i) reversible redox process, (ii) irreversible electrochemical oxidation process, and (iii) irreversible electrochemical reduction process on both bare-SPE and ZCO-NFs/SPE electrodes. The obtained results showed that ZCO-NFs possess the selective enhancement of electrochemical response for redox systems with an increase of 24%–90% for PAR, DA, FZD, CAP, and CBR and a decrease of 13%–49% for p-NP, ERY, and OFX. The different electrochemical response of redox species at nanostructured semiconductor electrodes is attributed to the contribution of both the adsorption capacity of redox species and the interfacial electron transfer process between electrode and redox species. An insight into the interfacial electron transfer kinetics and its contribution to the enhancement of electrochemical response on p-type semiconductor electrode is helpful in designing high-performance sensing platforms based on spinel oxide nanostructures.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"108 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Communication—Forecast of the Impact of Degradation Modes on a Commercial Hard Carbon/Na3V2(PO4)2F3-based Na-ion Battery 通信--降解模式对商用硬碳/Na3V2(PO4)2F3 型负离子电池影响的预测
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-30 DOI: 10.1149/1945-7111/ad728e
Matthieu Dubarry, David Beck
{"title":"Communication—Forecast of the Impact of Degradation Modes on a Commercial Hard Carbon/Na3V2(PO4)2F3-based Na-ion Battery","authors":"Matthieu Dubarry, David Beck","doi":"10.1149/1945-7111/ad728e","DOIUrl":"https://doi.org/10.1149/1945-7111/ad728e","url":null,"abstract":"Commercial Na-ion batteries are becoming available with performance forecasted to be similar to that of their lithium counterparts. On the many diagnosis and prognosis techniques developed to characterize batteries in the past four decades, it is essential to assess how many could be directly transferred to Na-ion batteries. In particular, the degradation modes approach is among the most interesting to test because it is widely used and allows to forecast the voltage response of the cells upon degradation. This work investigates the applicability of this approach to a commercial Na-ion cell comprising hard carbon and sodium vanado-fluorophosphate electrodes.<inline-formula>\u0000<inline-graphic xlink:href=\"jesad728e-ga.jpg\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula>","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"60 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimal Design of a Binder-Free Manganese/Cobalt Bilayer Bifunctional Catalyst for Rechargeable Zinc–Air Batteries 用于锌-空气充电电池的无粘结剂锰/钴双层双功能催化剂的优化设计
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-30 DOI: 10.1149/1945-7111/ad7294
Takayuki Kiso, Tomoya Higo, Wataru Yoshida, Yu Katayama, Masaharu Nakayama
{"title":"Optimal Design of a Binder-Free Manganese/Cobalt Bilayer Bifunctional Catalyst for Rechargeable Zinc–Air Batteries","authors":"Takayuki Kiso, Tomoya Higo, Wataru Yoshida, Yu Katayama, Masaharu Nakayama","doi":"10.1149/1945-7111/ad7294","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7294","url":null,"abstract":"We have developed a bilayer film comprising cobalt oxyhydroxide (CoOOH) underlayer and manganese dioxide (MnO<sub>2</sub>) upper layer, which are active toward oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), respectively. The bilayer bifunctional catalyst is synthesized by electrodepositing cobalt hydroxide (Co(OH)<sub>2</sub>) on a porous carbon paper (CP) and subsequently immersing the obtained Co(OH)<sub>2</sub>/CP in a potassium permanganate (KMnO<sub>4</sub>) solution without binders or conductive additives. Specifically, electron transfer between the already-deposited Co(OH)<sub>2</sub> and MnO<sub>4</sub>\u0000<sup>–</sup> proceeded in the solution, yielding MnO<sub>2</sub>, until all the Co ions become trivalent, after which self-terminates. The proposed method only allows for the construction of the minimum required bifunctional catalyst only at the reaction site of the gas-diffusion electrode, i.e., at the so-called three-phase interface, thus remarkably increasing catalyst utilization while improving reactant and product diffusions. The developed catalyst shows stable MnO<sub>2</sub>/CoOOH cycles at |20| mA cm<sup>–2</sup> with a minimal difference (0.764 V) between the OER and ORR potentials, reflecting the structural advantage of the proposed catalyst. This work proposes efficient bifunctional catalysts having spatially separated OER/ORR reactive sites that can be synthesized via the simple and scalable electrochemical method, which does not require the skill and optimization of binder and electron-conducting additives.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"15 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analyzing Thermal Runaway Propagation in Lithium-Ion Battery Modules with Reduced Flammability Electrolyte Cells 分析采用易燃性降低电解质电池的锂离子电池模块中的热失控现象
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-30 DOI: 10.1149/1945-7111/ad7293
Alexander Sorensen, Jeffrey Belt
{"title":"Analyzing Thermal Runaway Propagation in Lithium-Ion Battery Modules with Reduced Flammability Electrolyte Cells","authors":"Alexander Sorensen, Jeffrey Belt","doi":"10.1149/1945-7111/ad7293","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7293","url":null,"abstract":"A thorough analysis of thermal runaway propagation was conducted, focusing on both module and cell levels, using a range of standard flammability and reduced flammability electrolytes in 18650 cells sourced from Eagle-Picher Technologies. Utilizing techniques such as accelerated rate calorimetry; cell enthalpy, maximum thermal runaway temperature, and thermal runaway onset and initiation temperatures were evaluated, consistently demonstrating their reliability. Employing the NASA X-57 module billet as a strategy for mitigating thermal runaway propagation, the absorption of cell energy during failure events was observed, effectively preventing the spread of thermal runaway between cells. Notably, the use of reduced flammability electrolyte resulted in an average reduction of 104 °C in maximum thermal runaway temperature at the module level, thereby offering decreased risk in preventing thermal runaway propagation during failures. Note the relatively modest 51 °C difference observed between reduced flammability and standard flammability cells during individual cell tests. This underscores the importance of conducting tests at both the cell and module levels in the development of systems for certification, where the cell-level data indicate a 51 °C discrepancy, while the module-level analysis shows a more substantial 104 °C differentiation.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"7 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrothermal Synthesis of Rare-earth Ferrate for Electrochemical Detection of 4-Aminophenol in Food Samples and Products 水热法合成用于电化学检测食品样品和产品中 4-氨基苯酚的稀土铁酸酯
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-29 DOI: 10.1149/1945-7111/ad716f
Parthasarathi Manimaran, Umamaheswari Rajaji, Shen-Ming Chen, Karthik Raja Ramalingam, Samar A. Aldossari, Ting-Yu Liu
{"title":"Hydrothermal Synthesis of Rare-earth Ferrate for Electrochemical Detection of 4-Aminophenol in Food Samples and Products","authors":"Parthasarathi Manimaran, Umamaheswari Rajaji, Shen-Ming Chen, Karthik Raja Ramalingam, Samar A. Aldossari, Ting-Yu Liu","doi":"10.1149/1945-7111/ad716f","DOIUrl":"https://doi.org/10.1149/1945-7111/ad716f","url":null,"abstract":"4-Aminophenol (4-APL/4-AP) is one of the toxic chemicals in the water sources. The electrochemical oxidation of 4-APL reaction was studied by electrochemical method with SPCE modified with perovskite rare-Earth ferrate (PrFeO<sub>3</sub>). The nanomaterials were characterize using various morphological analysis by TEM, XRD, FTIR, Raman, XPS. PrFeO<sub>3</sub> needles modified SPCE demonstrated excellent electrocatalytic performance towards the electrooxidation of 4-APL under pH 7.0, having anodic peak current significantly higher than those of the bare SPCE. Using CV and amperometry method to analyse the sensor performance toward 4-APL detection. In CV, the synthetic sensor plays wide 4-APL detection range from 100–500 μM. In amperometry method, the sensor plays wide range of 4-APL detection from 0.03 to 1859 μM and the limit of detection is 0.014 μM. Mainly the proposed sensor material of PrFeO<sub>3</sub>/SPCE exhibit an excellent 4-APL detection carrying out in various food samples. Furthermore, regarding 4-APL analysis, PrFeO<sub>3</sub>/SPCE demonstrate outstanding selectivity, low limit of detection, repeatability, reproducibility, and operational stability.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"62 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Highly Sensitive and Rapid Enzyme Biosensor Based on AuNPs/CS@cMWCNTS for Detecting Fusarium Acid 基于 AuNPs/CS@cMWCNTS 的高灵敏快速酶生物传感器用于检测镰刀菌酸
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-29 DOI: 10.1149/1945-7111/ad7170
Qiaoning Dang, Bolu Sun, Hongxia Shi, Quhuan Ma, Yuhong Liu, Haoye Zou, Xinlan Wang, Xuanxiu Da, Miao Zhou, Ying Lv, Lin Yang, Xiaofeng Shi
{"title":"A Highly Sensitive and Rapid Enzyme Biosensor Based on AuNPs/CS@cMWCNTS for Detecting Fusarium Acid","authors":"Qiaoning Dang, Bolu Sun, Hongxia Shi, Quhuan Ma, Yuhong Liu, Haoye Zou, Xinlan Wang, Xuanxiu Da, Miao Zhou, Ying Lv, Lin Yang, Xiaofeng Shi","doi":"10.1149/1945-7111/ad7170","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7170","url":null,"abstract":"Fusarium acid (FSA) serves as a highly sensitive biomarker for the early warning of bulb rot in Lanzhou lily caused by Fusarium oxysporum infection. Realizing its highly sensitive, accurate, and rapid detection is crucial for the early warning and control of lily bulb rot. Herein, an enzyme biosensor based on the enzyme inhibition principle was developed for the rapid detection of FSA. Firstly, chitosan-functionalized carboxylated multi-walled carbon nanotubes (CS@cMWCNTS) and gold nanoparticles (AuNPs) were modified on a bare electrode by drop coating and electrochemical deposition methods, respectively. Subsequently, dopamine <italic toggle=\"yes\">β</italic>-hydroxylase (DBH) was firmly immobilized on the electrode surface through the gold-sulfur bond. Because the activity of DBH can be inhibited by FSA, which leads to a noticeable change in the signal response during the conversion of dopamine (DA) to norepinephrine (NA). Under optimized experimental conditions, the sensor exhibits an excellent linear relationship in the concentration range of 1.00 × 10<sup>−5</sup> μg ml<sup>−1</sup> ∼ 1.00 × 10<sup>3</sup> μg ml<sup>−1</sup> with the correlation coefficient of 0.9856 and the detection limit is 4.60pg ml<sup>−1</sup>. Additionally, the sensor showed good stability, repeatability (RSD 1.85%), and selectivity. The method was applied to analyze FSA in the extraction from Lanzhou lily with a recovery higher than 97.59% and RSD less than 1.383%. This method enables the highly sensitive and rapid detection of FSA in real samples, and provides scientific basis and technical support for early warning of diseases and accurate implementation of prevention and control strategies in crop planting and production.<inline-formula>\u0000<inline-graphic xlink:href=\"jesad7170-ga.jpg\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula>","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"347 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Addressing Strain and Porosity Changes of Battery Electrodes Due to Reversible Expansion through DEM Simulations 通过 DEM 仿真解决电池电极因可逆膨胀而产生的应变和孔隙率变化问题
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-29 DOI: 10.1149/1945-7111/ad70d8
Hunter Teel, Taylor R. Garrick, Srikant Srinivasan, Fengkun Wang, Yangbing Zeng, Sirivatch Shimpalee
{"title":"Addressing Strain and Porosity Changes of Battery Electrodes Due to Reversible Expansion through DEM Simulations","authors":"Hunter Teel, Taylor R. Garrick, Srikant Srinivasan, Fengkun Wang, Yangbing Zeng, Sirivatch Shimpalee","doi":"10.1149/1945-7111/ad70d8","DOIUrl":"https://doi.org/10.1149/1945-7111/ad70d8","url":null,"abstract":"In this work, discrete element method (DEM) simulations were used to probe changes in electrode porosity, electrode strain, and the resultant pressure changes for composite electrodes comprised of active material and binder particles. Through the results acquired by these simulations, three cases that are representative of two limiting cases for electrode operation, and one case for realistic electrode face pressure during operation were captured and the implications on design and performance are discussed. Predicting changes in the porosity is a unique insight that is difficult if not impossible to capture experimentally but is important for predicting changes in electrochemical performance during cycling, and should be addressed early on in the design phase for automotive and grid storage battery design and performance.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"5 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical Nanomolar Determination of the Anticancer Drug 5-Fluorouracil Using Chitosan Curcumin Schiff Base-Decorated NiO Nanorods Synthesized with Green Method 用绿色方法合成的壳聚糖-姜黄素-席夫碱装饰的氧化镍纳米棒电化学测定抗癌药物 5-氟尿嘧啶的纳摩尔浓度
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-29 DOI: 10.1149/1945-7111/ad7171
Mohamed Abd-Elsabour, Mortaga M. Abou-Krisha, Fatehy M. Abdel-Haleem, Mohamed N. Goda, Mohamed S. Mohy-Eldin
{"title":"Electrochemical Nanomolar Determination of the Anticancer Drug 5-Fluorouracil Using Chitosan Curcumin Schiff Base-Decorated NiO Nanorods Synthesized with Green Method","authors":"Mohamed Abd-Elsabour, Mortaga M. Abou-Krisha, Fatehy M. Abdel-Haleem, Mohamed N. Goda, Mohamed S. Mohy-Eldin","doi":"10.1149/1945-7111/ad7171","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7171","url":null,"abstract":"5-Fluorouracil (5-FU) is widely used in the treatment of various cancers, necessitating accurate and sensitive detection techniques. Hybrid materials, combining organic and inorganic components, offer superior electrochemical characteristics, including enhanced conductivity and stability. Herein, NiO nanorods (NiONRs) were synthesized using <italic toggle=\"yes\">Mangifera indica</italic> leaves extract and decorated with chitosan curcumin analog Schiff base (Cs-Cur-A). The characterization of the NiONRs and Cs-Cur-A were investigated through different techniques including FT-IR, <sup>1</sup>HNMR, XRD, SEM, and EDX. A sensitive and selective electrochemical sensor to determine 5-FU was elucidated using a Cs-Cur-A/NiONRs modified glassy carbon electrode (GCE). The anodic peak current of 5-FU was greatly enhanced at the Cs-Cur-A/NiONRs/GCE with pH 7.0 and a scan rate of 50 mV s<sup>−1</sup>. According to chronoamperometric measurements, the value of diffusion coefficient (D) was estimated to be 2.96 × 10<sup>−6</sup> cm<sup>2 </sup>s<sup>−1</sup>. Using differential pulse voltammetry (DPV), the fabricated sensor exhibits a wide linear range (0.1–150.0 μM) with a low limit of detection (21.75 nM). Moreover, the proposed sensor was successfully applied to the detection of 5-FU in blood serum and urine samples with high reproducibility, repeatability, and selectivity.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"40 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical Riboflavin Detection Using 2D Nanoflake–Like CuO Nanostructure Modified Electrodes 利用二维纳米片状 CuO 纳米结构修饰电极进行核黄素电化学检测
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-28 DOI: 10.1149/1945-7111/ad7172
Rafiq Ahmad, Marya Khan, 0000-0003-0020-7805Abdullah3, Md. Tabish Rehman, Mohamed F. AlAjmi, Shamshad Alam, Prabhash Mishra, Byeong-Il Lee
{"title":"Electrochemical Riboflavin Detection Using 2D Nanoflake–Like CuO Nanostructure Modified Electrodes","authors":"Rafiq Ahmad, Marya Khan, 0000-0003-0020-7805Abdullah3, Md. Tabish Rehman, Mohamed F. AlAjmi, Shamshad Alam, Prabhash Mishra, Byeong-Il Lee","doi":"10.1149/1945-7111/ad7172","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7172","url":null,"abstract":"Two-dimensional (2D) nanostructures are valued for their ultrathin planar surface and high charge carrier mobility, which offer enhanced sensing capabilities. Herein, we synthesised 2D nanoflake–like copper oxide (CuO) nanostructures using a hydrothermal method for electrochemical riboflavin sensor fabrication. Electrochemical analysis of nanoflake–like CuO modified glassy carbon electrode (GCE) was analysed using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The differential pulse voltammetry (DPV) technique was used for testing the electrochemical sensing performance of the fabricated riboflavin sensor. The designed sensor detected riboflavin in concentrations ranging from 10 to 1250 nM with a high sensitivity (571.8 μA/μM cm<sup>2</sup>) and a limit of detection (LOD) of 6.5 nM. The sensor’s excellent electrocatalytic activity towards riboflavin is primarily attributed to the unique CuO nanoflake–like morphology that provides a high surface area. Furthermore, sensors showed excellent selectivity, reproducibility, and stability, essential attributes for precise riboflavin detection and long-term usage. Overall, the electrochemical sensor based on nanoflake–like CuO nanostructures represents a promising platform for sensitive riboflavin detection. An easy synthesis of 2D nanoflake–like CuO nanostructures provides the possibility of future potential applications of these nanomaterials in analytical chemistry domains such as biomedical diagnostics, food analysis, and environmental monitoring.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"40 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A 2-D Reaction-Transport Model for Investigating Pit Morphology Under the Influence of a Salt Film 用于研究盐膜影响下矿坑形态的二维反应-传输模型
IF 3.9 4区 工程技术
Journal of The Electrochemical Society Pub Date : 2024-08-28 DOI: 10.1149/1945-7111/ad6cbc
Van Anh Nguyen, Roger C. Newman, Nicholas J. Laycock
{"title":"A 2-D Reaction-Transport Model for Investigating Pit Morphology Under the Influence of a Salt Film","authors":"Van Anh Nguyen, Roger C. Newman, Nicholas J. Laycock","doi":"10.1149/1945-7111/ad6cbc","DOIUrl":"https://doi.org/10.1149/1945-7111/ad6cbc","url":null,"abstract":"A 2-D reaction transport model with the phase field method was employed here to simulate the propagation stage of corrosion pitting in stainless steels in a chloride environment. The influence of the salt film on pitting dissolution kinetics was incorporated into the model to study its effect on the pit morphology under various settings. In potentiostatic conditions, the pit morphology tends toward a dish-like shape due to the presence of the salt film inside a corrosion pit. This leads to diffusion-controlled dissolution at the pit bottom and active dissolution near the pit mouth. On the contrary, in galvanostatic conditions and at a high applied current, although the salt film was initially present, its effect diminished as the chemistry inside the pit became diluted and the pit growth transitioned into active dissolution near the repassivation current. This effect is attributed to the limited resources to support the enlargement of a corrosion pit under constant applied current. As a result, the pit morphology in galvanostatic conditions is likely to be hemispherical and can transition into complex morphology, as discussed in a previous paper.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"7 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142222462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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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