Electrochemistry Communications最新文献_第5页

In-situ electrochemical-surface enhanced Raman scattering imaging for observing pH effects on the reduction of 4-Nitrobenzenethiol 原位电化学-表面增强拉曼散射成像观察pH对4-硝基苯硫醇还原的影响

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-03-21 DOI: 10.1016/j.elecom.2025.107913

Jihae Kim , Seog Joon Yoon , Donghoon Han

引用次数: 0

Porous aluminum supported carbon nanotubes-based 2.7 V supercapacitor for AC filtering 用于交流滤波的多孔铝支撑碳纳米管2.7 V超级电容器

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-03-20 DOI: 10.1016/j.elecom.2025.107914

Ecem Erman , Nayereh Soltani , Raghunandan Ummethala , Per Ohlckers , Kaiying Wang , Xuyuan Chen , Pai Lu

{"title":"Porous aluminum supported carbon nanotubes-based 2.7 V supercapacitor for AC filtering","authors":"Ecem Erman , Nayereh Soltani , Raghunandan Ummethala , Per Ohlckers , Kaiying Wang , Xuyuan Chen , Pai Lu","doi":"10.1016/j.elecom.2025.107914","DOIUrl":"10.1016/j.elecom.2025.107914","url":null,"abstract":"<div><div>Supercapacitor is a promising solution for alternating current (AC) filtering to result in miniaturized electronic devices by virtue of its much higher specific capacitance than conventional mainstream electrolytic capacitors. Here, this work reports a novel electrode design for satisfying the high frequency response requirement of AC filtering based on the growth of carbon nanotube (CNT) electrode materials onto the pre-etched porous aluminum substrate, via an atmospheric pressure chemical vapor deposition (APCVD) method. The developed supercapacitors with such CNT electrodes displayed a high areal specific capacitance of 586 <span><math><mi>μF</mi><mspace></mspace><msup><mi>cm</mi><mrow><mo>−</mo><mn>2</mn></mrow></msup></math></span>, a phase angle of −80°, and a resistor-capacitor (RC) time constant of 0.232 milliseconds (ms) at 120 Hz, demonstrating both improved areal capacitance and the high frequency handling capability. More importantly, a wide voltage window (2.7 V) is promised by the utilization of a commercial organic electrolyte, which is benefiting to boost the energy density and facilitate the design of high voltage filtering device in comparison with the most reported aqueous filtering supercapacitors.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"175 ","pages":"Article 107914"},"PeriodicalIF":4.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-frequency capacitance and mass-change of un-conditioned Nafion-coated electrodes – towards calibration-free aAg(I) ion sensing in pure water 无条件钠离子涂层电极的低频电容和质量变化——面向纯水中无需校准的aAg(I)离子传感

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-03-17 DOI: 10.1016/j.elecom.2025.107911

Tingting Han , Sini Chen , Tao Song , Xuliang Lin , Dongxue Han , Johan Bobacka , Li Niu

{"title":"Low-frequency capacitance and mass-change of un-conditioned Nafion-coated electrodes – towards calibration-free aAg(I) ion sensing in pure water","authors":"Tingting Han , Sini Chen , Tao Song , Xuliang Lin , Dongxue Han , Johan Bobacka , Li Niu","doi":"10.1016/j.elecom.2025.107911","DOIUrl":"10.1016/j.elecom.2025.107911","url":null,"abstract":"<div><div>Here, we propose a method for chemical sensing of Ag<sup>+</sup> ions in pure water by utilizing single-use and un-conditioned Nafion-coated Au electrodes together with capacitive and mass transduction principles. Ag<sup>+</sup> ions were accumulated and simultaneously Ag was deposited in the Nafion membrane at an applied potential of −0.6 V <em>vs.</em> Ag/AgCl, followed by electrochemical impedance spectroscopy (EIS) to obtain the low-frequency capacitance. After Ag deposition, the resulting change in the low-frequency capacitance at 10 mHz of the Nafion-coated Au was determined with respect to the activity of Ag<sup>+</sup> ion (<em>a</em><sub><em>Ag+</em></sub>) in solution in the range of <em>loga</em><sub><em>Ag+</em></sub> = −11 to −2. The precision of the low-frequency capacitance was improved by utilizing spin-coated thin-layer Nafion membrane with applied single frequency at 1 Hz. Under identical experimental conditions, the capacitive response of the Nafion/Au electrode was larger than that of a Nafion-coated glassy carbon (Nafion/GC) electrode, indicating better electrocatalytic activity of Au than GC towards Ag<sup>+</sup>. Based on quartz crystal microbalance (QCM) measurements, the mass change due to Ag deposition at Nafion/Au was linearly proportional to <em>loga</em><sub><em>Ag</em>+</sub> in the range of −5 to −2. Both EIS and QCM methods show a response that correlates with the concentration or activity of Ag<sup>+</sup> ions in pure water, which might give a possibility for calibration-free determination of Ag<sup>+</sup> without any electrode conditioning needed.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"175 ","pages":"Article 107911"},"PeriodicalIF":4.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Copper electrodeposition from alanine alkaline baths. A microkinetic study 丙氨酸碱性浴铜电沉积。微动力学研究

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-03-10 DOI: 10.1016/j.elecom.2025.107909

Marco Piccinni , Davide Carrea , Michael Casale , Diego Colombara

引用次数: 0

A novel reactivity descriptor for MN4 molecular catalysts for the oxidation of 2-mercaptoethanol and of thioglycolic acid: The Electrochemical Hardness 2-巯基乙醇和巯基乙酸氧化MN4分子催化剂的一种新的反应性描述符：电化学硬度

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-03-08 DOI: 10.1016/j.elecom.2025.107910

Laura Scarpetta-Pizo , Ricardo Venegas , Ingrid Ponce , José H. Zagal

{"title":"A novel reactivity descriptor for MN4 molecular catalysts for the oxidation of 2-mercaptoethanol and of thioglycolic acid: The Electrochemical Hardness","authors":"Laura Scarpetta-Pizo , Ricardo Venegas , Ingrid Ponce , José H. Zagal","doi":"10.1016/j.elecom.2025.107910","DOIUrl":"10.1016/j.elecom.2025.107910","url":null,"abstract":"<div><div>This manuscript describes a novel reactivity descriptor for Fe phthalocyanines molecular catalysts confined on the surface of OPG electrodes. The descriptor Δ<em>E</em>°’cat. is the gap in potential between the <em>E</em>°Fe(III)/(II) and <em>E</em>°Fe(II)/(I) redox processes for each FeN4 catalyst. This descriptor, labeled as the <em>electrochemical hardness</em> Δ<em>E</em>°’<sub>cat</sub>. Was examined using FeN4 macrocyclic complexes for the electrooxidation of 2-mercaptoethanol (2-ME) and thioglycolic acid TGA. Our findings reveal that the reactivity as log log(<em>j</em>/Γ)<em>E</em>, plotted versus <em>E</em>°Fe(III)/(II) or <em>E</em>°Fe(II)/(I) give two linear correlations. The activity log(<em>j</em>/Γ)<sub><em>E</em></sub> in both cases decreases with the redox potential of each FeN4 catalyst. In contrast log(<em>j</em>/Γ)<sub><em>E</em></sub>, or log (<em>TOF)</em><sub><em>E</em></sub>, increase with Δ<em>E</em>°’<sub>cat..</sub> The Fe<img>S binding energy Δ<em>E</em>°’<sub>cat.</sub> Correlates linearly with Δ<em>E</em>°’<sub>cat.</sub> so the softer the system the greater the binding energy and the lower the catalytic activity.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"174 ","pages":"Article 107910"},"PeriodicalIF":4.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrocatalysis of free chlorine on hydrogen oxidation 游离氯对氢氧化的电催化作用

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-03-01 DOI: 10.1016/j.elecom.2025.107902

Kye Hak Ko , Kum Hyok Ri , Song Chol Jong , Wi Song Pak

{"title":"Electrocatalysis of free chlorine on hydrogen oxidation","authors":"Kye Hak Ko , Kum Hyok Ri , Song Chol Jong , Wi Song Pak","doi":"10.1016/j.elecom.2025.107902","DOIUrl":"10.1016/j.elecom.2025.107902","url":null,"abstract":"<div><div>A novel view of the electrocatalysis of free chlorine on hydrogen oxidation was proposed by cyclic voltammetry (CV) in seawater solutions. Since seawater has good pH buffering from its composition (bicarbonate, carbonate, borate, etc.), there is no need for the addition of any supporting electrolyte during voltammetric analysis. In CV experiment using a Pt disk electrode, the peak of hydrogen oxidation reaction (HOR) was formed at about −0.8 V during the reverse scan and its height has correlated with increasing contents of free chlorine present in seawater solution. All experimental results showed that free chlorine exhibited clear electrocatalysis on HOR. It gives the possibility of the determination of free chlorine using its electrocatalysis on HOR. Our attempt to quantify free chlorine by electrocatalysis of free chlorine on HOR is thus a new perspective compared to many studies that have been conducted on direct detection of free chlorine using its own electrochemical properties. In a new electroanalytical method of free chlorine using the Pt disk electrode, the corresponding calibration curve exhibited a linear response in the content range from 0.02 to 0.4 mg L<sup>−1</sup> with a correlation coefficient of 0.998. The limit of detection (LOD) calculated from S/N = 3 was 0.012 mg L<sup>−1</sup> and the relative standard deviation (<em>RSD</em>) obtained was 4.4 %.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"174 ","pages":"Article 107902"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-invasive wearable electrochemical sensors for continuous glucose monitoring 用于连续葡萄糖监测的非侵入式可穿戴电化学传感器

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-02-20 DOI: 10.1016/j.elecom.2025.107894

Sameera Sh. Mohammed Ameen , Khalid M. Omer , Fotouh R. Mansour , Alaa Bedair , Mahmoud Hamed

{"title":"Non-invasive wearable electrochemical sensors for continuous glucose monitoring","authors":"Sameera Sh. Mohammed Ameen , Khalid M. Omer , Fotouh R. Mansour , Alaa Bedair , Mahmoud Hamed","doi":"10.1016/j.elecom.2025.107894","DOIUrl":"10.1016/j.elecom.2025.107894","url":null,"abstract":"<div><div>Diabetes is an increasingly prevalent chronic condition affecting millions worldwide. Regularly monitoring blood sugar levels is essential for managing the disease effectively. The growing importance of wearable sensors across diverse sectors lies in their ability to non-invasively monitor health parameters, support disease management, improve safety, and offer valuable research insights. Non-invasive blood glucose monitoring has become a global focus of research, offering hope for many patients. Continuous glucose monitoring surpasses the limitations of traditional finger-stick tests, enabling timely interventions for better management. This review article examines recent progress and obstacles in developing non-invasive epidermal electrochemical glucose sensors. It explores methods utilizing biological fluids such as skin interstitial fluid, sweat, tears, and saliva, highlighting both advantages and limitations in device advancements. Furthermore, the review outlines future directions in glucose detection technology and its potential to enhance patients' quality of life.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"173 ","pages":"Article 107894"},"PeriodicalIF":4.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ternary composites based next-generation supercapacitors electrode material: Emerging trends 基于三元复合材料的下一代超级电容器电极材料：新兴趋势

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-02-20 DOI: 10.1016/j.elecom.2025.107893

Esha Ghazanfar , Hajira Zahoor , Nasser S. Awwad , Hala A. Ibrahium , Sadullah Mir , Ishtiaq Ahmed

{"title":"Ternary composites based next-generation supercapacitors electrode material: Emerging trends","authors":"Esha Ghazanfar , Hajira Zahoor , Nasser S. Awwad , Hala A. Ibrahium , Sadullah Mir , Ishtiaq Ahmed","doi":"10.1016/j.elecom.2025.107893","DOIUrl":"10.1016/j.elecom.2025.107893","url":null,"abstract":"<div><div>The rapid advancements in energy storage and electronic applications have driven extensive research on conducting polymers, metal oxides, and carbonaceous materials due to their exceptional electrochemical and structural properties. Their unique physicochemical properties, such as high electrical conductivity, redox activity, and tunable surface chemistry, make them ideal candidates for supercapacitors, batteries, and sensors. Recent developments have focused on optimizing their synthesis, morphology, and hybridization to enhance conductivity, charge storage capacity, and long-term stability. Innovative strategies, including Nano structuring, doping, and surface engineering, have led to significant improvements in electrochemical performance. Furthermore, the integration of these materials into hybrid architecture has shown remarkable synergy, offering superior energy storage capabilities for supercapacitors and batteries. The CPs exhibit better conductivity and high theoretical capacitance but due to their cyclic instability, carbonaceous materials like graphene oxide are often reinforced with CPs. Still, the challenge of enhanced energy density cannot be addressed by binary composite and the need for ternary composite arises. Due to the outstanding specific capacitance of 100–2000 F/g with their redox activities the TMO are prominent electrode materials. This review highlights the importance of conducting polymers nanocomposites reinforced with graphene oxide and transition metal oxides in boosting electrical conductance, surface area, and charge storage ability of supercapacitors. Moreover, this review includes the latest literature and future opportunities in the emerging field of advanced electrode materials for supercapacitors. The review aims to offer valuable insights into the rational design of hybrid materials for next-generation energy storage technologies.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"174 ","pages":"Article 107893"},"PeriodicalIF":4.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recycled niobium oxide nanochannels from spent lithium-ion batteries: Enhanced performance for supercapacitor applications 从废锂离子电池中回收氧化铌纳米通道：超级电容器应用的增强性能

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-02-19 DOI: 10.1016/j.elecom.2025.107892

Yeonjin Kim, JeongEun Yoo, Kiyoung Lee

{"title":"Recycled niobium oxide nanochannels from spent lithium-ion batteries: Enhanced performance for supercapacitor applications","authors":"Yeonjin Kim, JeongEun Yoo, Kiyoung Lee","doi":"10.1016/j.elecom.2025.107892","DOIUrl":"10.1016/j.elecom.2025.107892","url":null,"abstract":"<div><div>Lithium-ion batteries (LIBs) are essential for modern energy storage but pose significant environmental and safety challenges due to the increasing volume of spent batteries. This study explores the reutilization of niobium oxide nanochannels (NONCs), initially employed as LIB anodes, as electrodes for supercapacitors. NONC electrodes, fabricated via electrochemical anodization, underwent structural and crystallographic transformations during charge-discharge cycling. The key findings demonstrate that these transformations, including an amorphous-to-crystalline phase transition, significantly improved ion transport efficiency and enhanced specific capacitance from 6.30 mF cm<sup>−2</sup> to 18.54 mF cm<sup>−2</sup>. Highly crystalline NONC structures exhibited superior stability, maintaining their morphology and active surface area, thereby optimizing charge storage mechanisms. In contrast, substantial structural changes resulted in decreased capacitive performance due to a reduction in surface area and an increase in diffusion-controlled contributions. The study underscores a sustainable strategy for reusing LIB materials, highlighting the potential of waste NONC electrodes for high-performance supercapacitor applications. By bridging the gap between recycling and advanced energy storage, this work supports the principles of a circular economy, offering a scalable solution to LIB waste management. These findings provide valuable insights into the relationship between material properties, structural integrity, and electrochemical performance, contributing to the development of sustainable energy technologies.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"173 ","pages":"Article 107892"},"PeriodicalIF":4.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries P ' 2-Na2/3[Mn1-xScx]O2在钠电池中的电极性能

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2025-02-19 DOI: 10.1016/j.elecom.2025.107891

Kodai Moriya, Shinichi Kumakura, Eun Jeong Kim, Ryoichi Tatara, Shinichi Komaba

引用次数: 0