Journal of The Electrochemical Society最新文献

Comprehensive Analysis of Commercial Sodium-Ion Batteries: Structural and Electrochemical Insights 商用钠离子电池的综合分析：结构和电化学见解

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-18 DOI: 10.1149/1945-7111/ad7765

Filip Adam Dorau, Alessandro Sommer, Jan Koloch, Richard Röß-Ohlenroth, Markus Schreiber, Maximilian Neuner, Kareem Abo Gamra, Yilei Lin, Jan Schöberl, Philip Bilfinger, Sophie Grabmann, Benedikt Stumper, Leon Katzenmeier, Markus Lienkamp and Rüdiger Daub

{"title":"Comprehensive Analysis of Commercial Sodium-Ion Batteries: Structural and Electrochemical Insights","authors":"Filip Adam Dorau, Alessandro Sommer, Jan Koloch, Richard Röß-Ohlenroth, Markus Schreiber, Maximilian Neuner, Kareem Abo Gamra, Yilei Lin, Jan Schöberl, Philip Bilfinger, Sophie Grabmann, Benedikt Stumper, Leon Katzenmeier, Markus Lienkamp and Rüdiger Daub","doi":"10.1149/1945-7111/ad7765","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7765","url":null,"abstract":"Considering the growing need for extensive energy storage solutions in smart grid technologies and affordable options for entry-level electric vehicles, sodium-ion batteries offer a promising alternative. They use raw materials that are cheaper, less toxic, and more abundant than those used in lithium-ion batteries, making them especially suitable for large-scale applications. This study comprehensively investigated four commercially available sodium-ion batteries to examine their structural and electrochemical characteristics. The cells were dissected, and the electrode dimensions, the areal mass loadings, and the material compositions were analyzed using scanning electron microscopy, energy-dispersive X-ray spectroscopy, powder X-ray diffraction, and attenuated total reflection Fourier-transform infrared spectroscopy. Electrical characterization, including electrochemical impedance spectroscopy, C-rate testing up to 6 C under different ambient temperatures, along with cyclic aging studies, provided insights into the cells’ performance and degradation mechanisms. The findings highlighted variations in electrode coatings, particle sizes, and cathode materials among the cells, which were then correlated with their electrical behavior. This emphasized the challenges in maintaining sodium-ion battery performance, especially at low temperatures. This study was designed to establish a comprehensive knowledge base for both academic and industrial research in sodium-ion battery technology.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263381","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

Indole-3-Carbinol Upconversion with Copper Oxide Nanoparticles Supported Graphitic Carbon Nitride: A Sustainable Approach 以氮化石墨碳为支撑的氧化铜纳米颗粒实现吲哚-3-卡比醇的上转换：一种可持续的方法

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad7766

Roopa Margaret Rodrigues and Anitha Varghese

{"title":"Indole-3-Carbinol Upconversion with Copper Oxide Nanoparticles Supported Graphitic Carbon Nitride: A Sustainable Approach","authors":"Roopa Margaret Rodrigues and Anitha Varghese","doi":"10.1149/1945-7111/ad7766","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7766","url":null,"abstract":"Electro-organic chemistry offers a sustainable and efficient approach to organic synthesis by utilizing electrochemical processes. This field has gained significant attention due to its potential for minimizing waste, reducing energy consumption, and enabling selective transformations. Herein, we report the development of a graphitic carbon nitride-coated carbon fiber electrode modified with electropolymerized amino-2-thiazole and electrodeposited Cu2O nanoparticles from copper nitrate trihydrate for the oxidation of Indole-3-carbinol (IC). Scanning electron microscopy, X-ray diffraction analysis, and X-ray photoelectron spectroscopy studies were carried out to characterize the developed electrode. Cyclic voltammetry, electrochemical impedance spectroscopy, and bulk electrolysis techniques were employed for the electrochemical studies. The enhanced electrochemical activity of the Cu2O-pAT-GCN-TCFP electrode compared to the individual GCN and polymer electrode was studied using electrochemical characterization, which revealed a 3-fold increase in the current response for Cu2O-pAT-GCN-TCFP (0.0011 A) compared to the bare electrode. The reaction was carried out using an aqueous carbonate buffer solution as an electrolyte via bulk electrolysis at a set potential of 0.82 V. The product obtained was isolated by column chromatography to obtain a yield of 74% and characterized by proton nuclear magnetic resonance (1H NMR) spectroscopy. Additionally, the Cu2O-pAT-GCN-TCFP electrode was studied for its stability, reproducibility, and selectivity.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263386","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

3-Methyl-2-oxazolidinone (JEFFSOL® MEOX) as a Substitute Solvent for NMP in Battery Manufacturing 电池生产中 3-甲基-2-噁唑烷酮（JEFFSOL® MEOX）作为 NMP 的替代溶剂

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad77b1

Jean E. Marshall, Victoria White, Ke Zhang, Philip Bellchambers, Jerzy Gazda, Mark Copley, Louis F. J. Piper and Matthew J. Capener

{"title":"3-Methyl-2-oxazolidinone (JEFFSOL® MEOX) as a Substitute Solvent for NMP in Battery Manufacturing","authors":"Jean E. Marshall, Victoria White, Ke Zhang, Philip Bellchambers, Jerzy Gazda, Mark Copley, Louis F. J. Piper and Matthew J. Capener","doi":"10.1149/1945-7111/ad77b1","DOIUrl":"https://doi.org/10.1149/1945-7111/ad77b1","url":null,"abstract":"This work presents 3-Methyl-2-oxazolidinone (JEFFSOL® MEOX) as a substitute solvent for N-methyl-2-pyrrolidone (NMP) in the manufacture of Li-ion batteries. NMP is a good solvent for polyvinylidene difluoride (PVDF, a common binder material), and also has a high boiling point (202 °C), allowing for gradual drying of electrode slurries to form homogeneous coatings. However, NMP has a reprotoxic effect and its use is attracting increasing legislative pressure; it would be advantageous to the battery-making industry to find a more benign alternative. Of the few other solvents that will readily dissolve PVDF, examples such as dimethylformamide are also significantly toxic, so further investigation is necessary to find a credible alternative solvent system. We show that JEFFSOL® MEOX (boiling point 225 °C) is capable of dissolving PVDF at accessible temperatures (40 °C–50 °C), and that at a similar ratio of active material:binder:solvent, both JEFFSOL® MEOX and NMP produce electrode slurries with a viscosity of 5–6 Pa.s at 25 °C and at a shear rate of 10 s−1. Cells formed using JEFFSOL® MEOX-made and NMP-made cathode coatings showed comparable electrochemical performance.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263644","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

Rapid Detection of Ultralow H2S Concentration with on-chip Fabrication of SnO2-based Gas Sensors by Direct Electrodeposition from Non-Aqueous Solvents 通过从非水性溶剂中直接电沉积在芯片上制造 SnO2 气体传感器，实现超低 H2S 浓度的快速检测

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad790f

Kiem Do Van, Nguyen Van Hieu, Thomas C-K Yang and Tu Le Manh

{"title":"Rapid Detection of Ultralow H2S Concentration with on-chip Fabrication of SnO2-based Gas Sensors by Direct Electrodeposition from Non-Aqueous Solvents","authors":"Kiem Do Van, Nguyen Van Hieu, Thomas C-K Yang and Tu Le Manh","doi":"10.1149/1945-7111/ad790f","DOIUrl":"https://doi.org/10.1149/1945-7111/ad790f","url":null,"abstract":"Hydrogen sulfide (H2S) causes significant impacts on human health and the environment due to its highly toxic properties. Thus, the design and development of gas sensors to detect and monitor H2S (especially at extremely low concentrations) are challenging tasks for scientists. In this work, SnO2 gas sensors were successfully synthesized directly on a chip by Sn electrodeposition from ethylene glycol solutions + a post-treatment (calcination) stage (to form and stabilize SnO2). Mechanisms and kinetics of Sn electrodeposition on Pt microelectrodes were thoroughly studied using electrochemical techniques. These fabricated gas sensors exhibit a high selectivity toward H2S gas and an effective response to low-level concentrations of H2S in the range of 0.1 ppm–1 ppm at different working temperatures. The influence of electrodeposition conditions and calcination temperatures on the gas response of sensors were also examined. The results have verified that the electrodeposition method from ethylene glycol solutions is promising for the fabrication of ultrasensitive on-chip gas sensors.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263590","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 Behaviour of Nickel(II)-Rhenium(VII) And Electrodeposition of Nickel-Rhenium Alloy from Choline Chloride - Urea Deep Eutectic Solvent 镍（II）-铼（VII）的电化学行为以及从氯化胆碱-尿素深共晶溶剂中电沉积镍铼合金

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad77f6

Mani Jayakumar, M. Karthikeyan, G. Murali Krishna and Chrysanthus Andrew

{"title":"Electrochemical Behaviour of Nickel(II)-Rhenium(VII) And Electrodeposition of Nickel-Rhenium Alloy from Choline Chloride - Urea Deep Eutectic Solvent","authors":"Mani Jayakumar, M. Karthikeyan, G. Murali Krishna and Chrysanthus Andrew","doi":"10.1149/1945-7111/ad77f6","DOIUrl":"https://doi.org/10.1149/1945-7111/ad77f6","url":null,"abstract":"The electrochemical behaviour of nickel(II)-rhenium(VII) and the electrodeposition of nickel-rhenium alloy using choline chloride: 2 Urea deep eutectic solvent (Reline DES) is reported. Speciation of nickel(II)-rhenium(VII) in Reline DES was studied using UV -Visible spectroscopy. Cyclic voltammetry of Ni2+-ReO4− in Reline indicates the simultaneous reduction of two metal ions at glassy carbon electrode controlled by non-reversible diffusion process. Chronoamperograms obtained for the reduction of Ni2+-ReO4− suggests nucleation and three-dimensional growth of bimetallic phase on electrode surface followed progressive nucleation. Electrodeposition of nickel—rhenium alloy was carried out on copper substrates under galvanostatic and potentiostatic conditions. Smooth and uniform deposits were obtained by galvanostatic deposition. X-ray diffraction analysis of the deposit confirmed it to be nickel-rhenium alloy (at −1.2 V) in amorphous form which upon annealing at 1000 °C crystallizes into hexagonal phase with concurrent morphology change from spherical particles to irregular polygons.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263382","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

Optimization of Post-Annealing Temperature of RF Magnetron-Sputtered ZnO Thin Films for Enhancing Performances of UV Photodetectors 优化射频磁控溅射氧化锌薄膜的退火后温度以提高紫外线光电探测器的性能

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad7983

Xueyuan Wei, Yao Liu and Lesi Wei

引用次数: 0

Chemical Oxidation-Induced Degradation in Gas Diffusion Layers for PEFC: Mechanisms and Performance Implications PEFC 气体扩散层中的化学氧化诱导降解：机理和性能影响

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad790a

J. M. Edjokola, M. Heidinger, A. M. Niroumand, V. Hacker and M. Bodner

{"title":"Chemical Oxidation-Induced Degradation in Gas Diffusion Layers for PEFC: Mechanisms and Performance Implications","authors":"J. M. Edjokola, M. Heidinger, A. M. Niroumand, V. Hacker and M. Bodner","doi":"10.1149/1945-7111/ad790a","DOIUrl":"https://doi.org/10.1149/1945-7111/ad790a","url":null,"abstract":"Gas Diffusion Layers (GDLs) are integral in polymer electrolyte fuel cells, facilitating gas and water transport while providing structural support. However, their susceptibility to chemical degradation significantly impacts their functionality over extensive periods of time. This study investigates the mechanisms of GDL degradation, focusing on chemical oxidation. Accelerated stress testing, which involves immersing GDL in Fenton’s reagent for 24 h, is used. Ex-situ analysis reveals changes in surface properties, including a 3% reduction in contact angle, from 15% to only 9% remaining fluorine on the surface, and OH group presence in GDLs exposed to Fenton’s reagent. In-situ methods are used to study the impact of GDL degradation on fuel cell performance. Polarization curve reveals a 17% performance enhancement in aged GDLs, with a corresponding 19% decrease in voltage loss due to oxygen transport resistance at a high current observed via transient limiting current analysis. Electrochemical impedance spectroscopy reveals a 51% reduction in mass transport resistance, providing insights into structural alterations, such as pore widening and increased hydrophilicity. Despite these improvements, aged GDL demonstrates substantial degradation under high humidity, leading to water management challenges and voltage instability. This is attributed to the loss of fluorine, as indicated by the ex situ analysis.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269241","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

Rotating Disk Electrode Study of Sm(III)/Sm(II) in LiCl-KCl Eutectic Molten Salt 锂盐-氯化钾共晶熔盐中 Sm(III)/Sm(II) 的转盘电极研究

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad77f5

Wonseok Yang, Suhee Choi, Tae-Hong Park, Sungyeol Choi and Sang-Eun Bae

引用次数: 0

Localized Surface Modification during Alternating Current Scanning Electrochemical Microscopy: Origin and Mechanism 交流电扫描电化学显微镜下的局部表面改性：起源与机理

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad7890

Ankita Pal, Nanda Gopala Krishna, Ravi Shankar A. and John Philip

{"title":"Localized Surface Modification during Alternating Current Scanning Electrochemical Microscopy: Origin and Mechanism","authors":"Ankita Pal, Nanda Gopala Krishna, Ravi Shankar A. and John Philip","doi":"10.1149/1945-7111/ad7890","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7890","url":null,"abstract":"In the current study, we report for the first time the observation of unintended localized surface modification on commercially pure aluminum (Al) during an alternating current scanning electrochemical microscopy (AC-SECM) analysis, its origin, and the probable mechanism responsible for it. Application of an AC perturbation potential (∼100 mV amplitude at ∼100 kHz frequency) to the Platinum ultramicroelectrode (Pt UME), during AC-SECM in acidic, neutral chloride, tap water, and alkaline electrolytes was found to cause surface modification on the scanned region of Al. An increase in the local pH of the electrolyte between the UME and the Al substrate, irrespective of the electrolyte pH (3–11) and UME biasing conditions, led to the local surface modification. The reason for the enhancement of local pH is attributed to the occurrence of higher rates of cathodic reduction reactions than that of anodic oxidation reactions. The reduction of dissolved oxygen/protons/water in the electrolytes led to the generation or consumption of OH−/H+ ions, respectively, and thus increased the pH, whereas the oxidation of Pt UME/Al surfaces decreased the pH with the generation of H+ or consumption of OH− ions. These results contribute significantly to accurately analyzing Al and its alloys using the AC-SECM technique.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269231","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

Spatially Resolved Assessment and Analysis of Al-Zn, Mg, and Mg/Al-Zn Metal-Rich Primers Applied to AA 7075-T651 in Full Immersion 应用于 AA 7075-T651 全浸式铝锌、镁和镁/铝锌富金属底漆的空间分辨评估与分析

IF 3.9 4区工程技术

Journal of The Electrochemical Society Pub Date : 2024-09-17 DOI: 10.1149/1945-7111/ad7535

A. Korjenic, E. Romanovskaia and J. R. Scully

{"title":"Spatially Resolved Assessment and Analysis of Al-Zn, Mg, and Mg/Al-Zn Metal-Rich Primers Applied to AA 7075-T651 in Full Immersion","authors":"A. Korjenic, E. Romanovskaia and J. R. Scully","doi":"10.1149/1945-7111/ad7535","DOIUrl":"https://doi.org/10.1149/1945-7111/ad7535","url":null,"abstract":"The scanning vibrating electrode technique (SVET) was utilized to monitor localized corrosion and substrate protection of three metal-rich primers (MRP). The ability to suppress localized corrosion and provide widespread cathodic polarization to enable sacrificial anode-based cathodic protection of a AA 7075-T651 substrate with either an aluminum-rich primer (AlRP), magnesium-rich primer (MgRP), or a composite magnesium + aluminum-rich primer (MgAlRP) in a polyamide-based epoxy primer coatings fully immersed in 1 mM NaCl was investigated. Pigments did not activate uniformly in each MRP. The notion of throwing power polarizing the bare substrate and uniform current and potential distributions at scratch sites does not describe the behavior observed. In cases where activation occurred, protection was noticed in the form of suppression of local anodes on bare AA 7075-T651. Local corrosion was suppressed on heterogeneously corroding AA 7075-T651 with strong local anodes and cathodes. Widespread cathodic polarization was absent. The MgRP and MgAlRP were shown to provide superior local corrosion suppression associated with pitting on AA 7075-T651 compared to the AlRP.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263385","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