Journal of The Electrochemical Society最新文献

{"title":"A Self-Healing Binder based on Host-Guest Interaction for Carbon-Silicon Anodes in Llithium Ion Batteries","authors":"Qiyue Sun, Xianzhi Wu, Zhaoyi He, Kairong Xiong, Qiaoying Cao, Hang Hu, Mingtao Zheng, Yong Xiao, Yeru Liang","doi":"10.1149/1945-7111/ad9d7e","DOIUrl":"https://doi.org/10.1149/1945-7111/ad9d7e","url":null,"abstract":"Silicon anodes offer exceptional specific capacity, positioning them as prime candidates for next-generation lithium-ion batteries. However, their practical application is hindered by severe volume expansion and structural degradation during cycling. Herein, we report a self-healing binder for carbon-silicon anodes, constructed from β -cyclodextrin and 1-vinylimidazole, leveraging host–guest interactions to mitigate mechanical stress. This binder accommodates silicon’s volume changes, significantly enhancing structural integrity and electrochemical stability. Compared to conventional polyvinylidene fluoride binders, the proposed system delivers a 30% higher specific capacity at 0.2 C, underscoring its potential for advanced silicon-based lithium-ion batteries and broader energy storage applications.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"172 1","pages":"010508-010508"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919938","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}

{"title":"Performance of the Liquid Cadmium Cathode Assembly for the Electrodeposition of U and Ce from LiCl-KCl Molten Salt","authors":"Yanhong Jia, Hong Zhang, Ahmet Burak Çubuk, Biao Wu, Shaoqiang Guo","doi":"10.1149/1945-7111/ad9a7f","DOIUrl":"https://doi.org/10.1149/1945-7111/ad9a7f","url":null,"abstract":"A mesh-type assembly and stirrer assembly were developed to improve the performance of liquid cadmium cathodes for the electrodeposition of U and Ce from LiCl-KCl molten salt at 773 K. The thermodynamic basis for electrodepositing U and Ce was established through the calculation of equilibrium potentials and cyclic voltammograms, while also examining the co-deposition of Li. Thereafter, U and Ce electrodeposition was performed by galvanostatic electrolysis, and the current efficiency was determined. It was found that both assemblies effectively hampered the growth of U dendrites and Ce-Cd dendritic alloys. However, the utilization of the mesh-type assembly resulted in a greater current efficiency for U, with the maximum deposited amount attaining 7.7 wt% U/Cd without causing U dendrites formation. In contrast, the current efficiency for Ce was enhanced after using the stirrer assembly due to an improved diffusion flux of Ce ions. Finally, cathode deposits were characterized by scanning electron microscopy, energy-dispersive spectroscopy, and X-ray diffraction, which revealed that disrupted fine U dendrites were randomly scattered in the Cd bulk, and that the CeCd 11 dendritic alloys were also damaged, leading to an increased atomic ratio of Ce to Cd at the Cd bottom.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 12","pages":"122503-122503"},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147888752","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}

{"title":"Preparation of Niobium through Electrolysis of NbC_xO_y Soluble Anode","authors":"Dongsheng Jiang, Zhuan Zhao, Huan Zhang, Ruifang Wang, Jianxun Song, Yusi Che, Jilin He","doi":"10.1149/1945-7111/ad9d7f","DOIUrl":"https://doi.org/10.1149/1945-7111/ad9d7f","url":null,"abstract":"In this study, metallic niobium was produced by electrolysis in a NaCl-KCl melt using NbC x O y as a soluble anode. The anodic dissolution behavior of NbC x O y in the NaCl-KCl melt and the reduction mechanism of niobium ions were examined using cyclic voltammetry, linear sweep voltammetry, square wave voltammetry, electrochemical impedance spectroscopy, and chronopotentiometry. The results revealed that the electrode reduction process of niobium ion was Nb(Ⅴ) → Nb(Ⅲ) → Nb(Ⅰ) → Nb, with these reactions being diffusion-controlled. During successive multiturn scans, the reduction process of niobium ions favored the pathway of Nb(V) → Nb(III) → Nb. As the electrolytic voltage increased, the dissolution of niobium ions in NbC x O y also increased, with a tendency to oxidize into high-valence niobium ions. Constant-current electrolysis in a NaCl-KCl melt, using NbC x O y as the anode and Mo rods as the cathode resulted in the deposition of mainly metallic niobium on the Mo cathode, manifesting that NbC x O y can be used to extract metallic niobium. This study provides a theoretical foundation for the realization of a green and efficient extraction process for metallic niobium.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 12","pages":"122505-122505"},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147897809","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}

{"title":"MOF-derived Sheet-like E-Ru/Mo/Mo₂C with Abundant Exposed Active Sites for Advanced Electrocatalytic Hydrogen Evolution","authors":"Fuxiang Zhou, Min Zhu, Huan Liu, Qinghua Deng, Cheng‐Han Yang, Jiamu Huang, Yiwei Zhang","doi":"10.1149/1945-7111/ad9995","DOIUrl":"https://doi.org/10.1149/1945-7111/ad9995","url":null,"abstract":"A Ru/Mo/Mo 2 C sheet-structured composite electrocatalyst was synthesized through a meticulous methodology involving etching pretreatment, impregnation, and subsequent calcination. This work delves into the intricacies of how the incorporation of Ru and the application of etching pretreatment influence the compositional makeup, morphological characteristics, electronic configuration, and, most notably, the hydrogen evolution reaction (HER) performance of the catalyst within the context of water electrolysis. Specifically, it was observed that the introduction of Ru catalyzed the formation of Mo and Mo 2 C phases, while the etching pretreatment played a pivotal role in augmenting the specific surface area of the catalyst, thereby facilitating the availability of an enriched landscape of active sites and modifying the electronic coupling between Ru and Mo species. Electrochemical evaluations revealed that the optimized E-Ru/Mo/Mo 2 C-3 catalyst exhibited remarkable HER kinetics, manifested by a minimal overpotential of 39.7 mV at a benchmark current density of 10 mA cm −2 and a favorable Tafel slope of 14.5 mV dec −1 in an alkaline medium. This comprehensive investigation offers profound insights into the rational design of metal-organic framework (MOF)-derived electrocatalysts, paving the way for the development of highly efficient HER catalysts tailored for water electrolysis applications.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 12","pages":"123503-123503"},"PeriodicalIF":0.0,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147918306","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}

{"title":"A Molecularly Imprinted Electrochemical Sensor Based on Fc-MWCNTs for the Rapid Detection of Antler Marker-Hyp","authors":"Bolu Sun, Miao Zhou, Xuanxiu Da, Ying Lv, Xinlan Wang, Lin Yang, Ke Sun, Quan Hao, Guolin Chai, Fangdi Hu, Ling‐Bin Kong","doi":"10.1149/1945-7111/ad97e2","DOIUrl":"https://doi.org/10.1149/1945-7111/ad97e2","url":null,"abstract":"Antler, as one of the monarchical herbs in Ginseng and antler solidifying and reducing pills, has the benefits of increasing kidney yang, nourishing essence and blood, and strengthening tendons and bones. In the face of the many different types of antler, how to screen out a representative ingredient that represents the overall quality of the herb as much as possible from the comprehensive evaluation of authenticity, quality, and therapeutic efficacy and recognize its rapid detection has become the key to the initial rapid evaluation of the quality of antler bulk medicinal materials. In recent years, hydroxyproline (Hyp) has been recognized as one of the index components of antler quality evaluation. Achieving its qualitative and quantitative rapid inspection is crucial for the quality assurance of antler bulk medicinal materials and the sustainable development of antler-related industries. Currently, the methods for determining Hyp are costly, time-consuming, and inefficient. As a result, there is a demand for rapid, simple, low cost, and dependable Hyp detection solutions. Molecularly imprinted polymer membranes (MIPs) are prime examples of biomimetic recognition materials. It has found significant application in the field of selective chemical sensing. In this study, we prepared MIPs by self-assembly on ferrocene (Fc)-multi-walled carbon nanotubes (MWCNTs) modified glassy carbon electrode (GCE). Thus, we developed a molecularly imprinted electrochemical sensor for highly selective, sensitive, and rapid detection of the indicator components of antler quality evaluation - Hyp. The sensor had a detection limit of 9.0 × 10 −3 μg ml within a range of 1.0 × 10 −2 ∼ 1.0 × 10 3 μg ml −1 (S/N = 3). Using the sensor in actual samples resulted in recoveries ranging from 97.45 ∼ 107.70%, with RSD of 0.53 ∼ 1.28%. This work provides a novel approach for the initial screening evaluation of the quality of Chinese medicinal materials as well as a practical and effective way to quickly assess the quality of animal medicinal materials.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 12","pages":"127504-127504"},"PeriodicalIF":0.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147879333","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}

{"title":"Enhanced H₂O₂ Production by Two-Electron Oxygen Reduction on Co₃O₄/MXene Catalyst","authors":"Tinghua Li, Shuai Kang, Fan Zhang, Sheng Xiong, Shoubo Li, Wen‐Qiang Lu, Donglai Zhu, Zhiqiang Li","doi":"10.1149/1945-7111/ad977a","DOIUrl":"https://doi.org/10.1149/1945-7111/ad977a","url":null,"abstract":"The two-electron oxygen reduction reaction (ORR) using an electrochemical method is considered a viable green technology for generating H 2 O 2 . Platinum group metals demonstrate excellent H 2 O 2 generation performance due to their superior ORR activity and stability. However, the high cost of these electrocatalysts is a significant barrier to the widespread adoption of this technology, prompting research into non-precious metal catalysts as alternatives. In this work, Co 3 O 4 nanoparticles with sized from 5 to 10 nm were synthesized on MXene sheets. Compared with Co 3 O 4 /C and MXene, the results indicated that Co 3 O 4 /MXene exhibited the best electrochemical performances, with an electron transfer number of ∼3.1 during oxygen reduction and an H 2 O 2 selectivity of ∼47%. Co 3 O 4 /MXene also demonstrated great stability. After 5000 cycles, the H 2 O 2 selectivity and electron transfer number remained at 50% and 3.0, respectively. After 12 h of continuous testing, Co 3 O 4 /MXene exhibited a high Faraday efficiency of 50% and H 2 O 2 yield of 0.14 mol h −1 g −1 , with H 2 O 2 selectivity increasing to 68.7% and an electron transfer number of 2.6. The excellent electrochemistry is attributed to the synergistic effect between MXene and Co 3 O 4 . This study provides valuable insights into non-precious metal electrocatalysts for H 2 O 2 generation.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 12","pages":"126503-126503"},"PeriodicalIF":0.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920741","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}

{"title":"Electrochemical HOCl Production Modeling for an Electrochemical Catheter.","authors":"Dilara Ozdemir, Derek Fleming, Cristian Picioreanu, Robin Patel, Haluk Beyenal","doi":"10.1149/1945-7111/ad8aee","DOIUrl":"https://doi.org/10.1149/1945-7111/ad8aee","url":null,"abstract":"<p><p>Hypochlorous acid (HOCl) is a strong oxidizing agent that damages cells by interacting with lipids, nucleic acids, sulfur-containing amino acids, and membrane components. It is an endogenous substance produced by the immune system to protect mammals from pathogens. Previously, we developed an HOCl-generating electrochemical catheter (e-catheter) and demonstrated its ability to prevent central line-associated bloodstream infections. The e-catheter is an electrochemical system consisting of two parts - an e-hub and a tube. Working, counter, and reference electrodes are placed in the e-hub, which contains 0.9% NaCl as an electrolyte. Although a prototype of this device has shown activity against pathogens, it is helpful to understand the factors influencing associated electrochemical/chemical processes to optimize design and efficacy. A mathematical model could predict factors influencing HOCl generation and distribution in the catheter and could aid in optimizing these devices. Here, we developed an Electrochemical Hypochlorous Acid Production (EHAP) model to predict factors influencing electrochemical generation and distribution of HOCl in e-catheters, including polarization time, diffusion of HOCl into the e-catheter, operational voltage, working electrode length, and surface area.</p>","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 11","pages":"113504"},"PeriodicalIF":3.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11540492/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and Computational Insights into the Effects of -NH₂ and -Cl Functional Groups on the Copper Corrosion Inhibition by Benzotriazole","authors":"Thanh Hai Pham, Viorel Chihaia, Phung K. Le, Do Ngoc Son","doi":"10.1149/1945-7111/ad8d82","DOIUrl":"https://doi.org/10.1149/1945-7111/ad8d82","url":null,"abstract":"The influences of -NH 2 and -Cl groups on the copper corrosion inhibition in 0.5 M H 2 SO 4 solution by benzotriazole were studied using experimental methods and density functional theory calculations. Mass loss tests, potentiodynamic polarization, and surface morphology analyses revealed notable differences: while unmodified benzotriazole showed an inhibition efficiency of 76.6%, the -Cl derivative increased this to 87.6%, whereas the -NH 2 derivative dropped it to 61.0% at the concentration of 5 × 10 −4 M. Density functional theory calculations indicated these differences are not due to electronic properties or inhibitor-copper interaction energies but rather to the inhibitor’s influence on the oxygen reduction reaction, especially O 2 and H 2 O adsorption. The -NH 2 group formed strong hydrogen bonds with O 2 and H 2 O, reducing oxygen reduction inhibition, while the -Cl group repelled O 2 , resulting in enhanced inhibition. Free energy analysis of the oxygen reduction reaction supported these findings. These new insights into benzotriazole derivatives’ copper corrosion inhibition mechanisms offer valuable guidance for developing next-generation corrosion inhibitors.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 11","pages":"111502-111502"},"PeriodicalIF":0.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905824","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}

{"title":"Effect of Alkaline Etching on Formation Behavior and Corrosion Resistance of a Cr-Zr-Ti TCP Conversion Coating on AA2024 Aluminum Alloy","authors":"Minghao Li, Yan Ma, Jiangrong Yan, Minyu Ma, Liang Wu, Haisheng Wu","doi":"10.1149/1945-7111/ad8d83","DOIUrl":"https://doi.org/10.1149/1945-7111/ad8d83","url":null,"abstract":"Trivalent chromium process conversion coating is considered to be the ideal alternative to traditional chromate conversion coating due to its high corrosion resistance and low toxicity. However, achieving a high corrosion resistance trivalent chromium conversion coating on 2xxx aluminum alloys has been a great challenge. Herein, based on a newly developed trivalent chromium conversion solution (CN patent, ZL 202210804263.2), the effect of alkaline etching on the formation behavior and corrosion resistance of the coating on AA2024-T351 aluminum alloy was investigated. It was found that under the same conditions, the mechanically polished sample and the sample alkaline etched for 30 s showed the highest corrosion resistance. When the alkaline etching time was too short or too long, the corrosion resistance of the coating deteriorated. This is ascribed to changes in the surface microstructure of the alloy during alkaline etching, i.e., reduced number of intermetallic particles and formation of a copper enrichment layer. Reducing the number of intermetallic particles on the alloy surface is beneficial for uniform growth of the coating. However, the copper enrichment layer participated in formation of the coating, resulting in doping of copper species in the coating, which is detrimental to the corrosion resistance of the coating.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 11","pages":"111501-111501"},"PeriodicalIF":0.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous Determination of Phenolic Pollutants based on Electrochemical Oxidation by Nanoporous Gold","authors":"Quanhao Shi, Ruijun Liu, Zihan Huang, Xiaolei Wang, Xia Wang, Xiuling Yan","doi":"10.1149/1945-7111/ad8cc8","DOIUrl":"https://doi.org/10.1149/1945-7111/ad8cc8","url":null,"abstract":"Phenolic compounds, as highly toxic pollutants, can cause great harm to human beings and the environment even at very low concentrations. Therefore, the simultaneous detection of multiple phenolic pollutants is critically valuable for environmental monitoring. Here, an electrochemical sensor based on a glassy carbon electrode (GCE) modified by nanoporous gold (NPG) was successfully developed for the determination of phenolic pollutants including phenol (Ph), hydroquinone (HQ), catechol (CT), and o-nitrophenol (ONP), which realized not only the sensitive individual detection of each phenolic pollutant but also the sensitive simultaneous detection of these four phenolic pollutants. For the simultaneous detection, the limits of detection of Ph, HQ, CT, and ONP were 0.85, 0.17, 0.19, and 1.30 μM as well as the sensitivities of 0.24, 1.17, 1.08, and 0.16 μA μM −1 cm −2 , respectively. Additionally, the NPG/GCE electrochemical sensor exhibited good stability and anti-interference capability. The recovery rates of Ph, HQ, CT, and ONP in seawater samples and wastewater samples ranged from 94.64% to 105.87%. These results indicated that the prepared NPG/GCE electrochemical sensor may be an ideal choice for the reliable simultaneous detection of multiple phenolic pollutants.","PeriodicalId":17364,"journal":{"name":"Journal of The Electrochemical Society","volume":"171 11","pages":"117511-117511"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147918522","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}