Russian Journal of Electrochemistry最新文献_第3页

Electrical Conductivity of the System Polyvinyl Alcohol–Sodium Thiocyanate 聚乙烯醇-硫氰酸钠体系的电导率

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-08-07 DOI: 10.1134/S102319352570003X

M. A. Akhmedov, M. M. Gafurov, K. Sh. Rabadanov, A. M. Amirov, S. I. Suleimanov

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The Ionic Conduction Properties in Scandium Doped Calcium Zirconate High Temperature Proton Conducting Solid Electrolyte 掺钪锆酸钙高温质子导电固体电解质的离子导电性能

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-08-07 DOI: 10.1134/S1023193524601463

Fei Ruan, Chonggui Lei, Xi Wu, Jinxiao Bao, Fen Zhou, Jianquan Gao, Guoqi Liu, Zhen Tian

{"title":"The Ionic Conduction Properties in Scandium Doped Calcium Zirconate High Temperature Proton Conducting Solid Electrolyte","authors":"Fei Ruan, Chonggui Lei, Xi Wu, Jinxiao Bao, Fen Zhou, Jianquan Gao, Guoqi Liu, Zhen Tian","doi":"10.1134/S1023193524601463","DOIUrl":"10.1134/S1023193524601463","url":null,"abstract":"To gain a more thorough understanding of the conductive mechanism of Sc-doped CaZrO3 electrolyte, solid electrolyte specimens of CaZr1 − xScxO3 − δ (with x values of 0.06, 0.12, 0.18, and 0.24, hereinafter referred to as CZS) were meticulously prepared using a high-temperature solid-state method. The phase structure of the electrolyte was thoroughly analyzed using X-ray diffraction (XRD). The electrical conductivity of the CZS electrolyte was rigorously tested within a temperature range of 573 to 1473 K, both in oxygen-rich and hydrogen-rich atmospheres, employing the two-terminal AC impedance spectroscopy method. Additionally, the H/D isotope effect of the electrolyte at various temperatures in both H2 and D2 atmospheres was meticulously examined through AC impedance spectroscopy. The electromotive force (EMF) of the electrolyte was precisely measured by a high-impedance ohmmeter at temperatures ranging from 573 to 1273 K. Furthermore, based on crystal defect chemistry theory, estimates were made for the partial conductivities of the conducting species, the active doping concentration of Sc, and the standard Gibbs free energy changes associated with the production of interstitial protons through the dissolution of water and hydrogen within the CZS electrolyte. The results clearly indicated that protons serve as the primary charge carrier in both oxygen-rich and hydrogen-rich atmospheres at temperatures below 1073 K. However, as temperatures rise above 1073 K, the situation changes: in hydrogen-rich atmospheres, oxygen ion vacancies emerge as the dominant charge carrier, whereas in oxygen-rich atmospheres, electron holes take precedence. Notably, CZY stands out as a promising candidate for a proton-conducting electrolyte material, suitable for high-temperature hydrogen sensors.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 5","pages":"163 - 176"},"PeriodicalIF":0.8,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142710","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}

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A Highly Sensitive and Simple Platform for Enzyme-Free Detection of Ethanol Based on a Nano-Porous Glassy Carbon Electrode with Electrodeposited Ni Nanoparticles 基于电沉积镍纳米颗粒的纳米多孔玻碳电极的高灵敏度和简易无酶检测平台

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-08-07 DOI: 10.1134/S1023193524601116

M. Besharati, H. Cheraghian Radi, F. Molaabasi

{"title":"A Highly Sensitive and Simple Platform for Enzyme-Free Detection of Ethanol Based on a Nano-Porous Glassy Carbon Electrode with Electrodeposited Ni Nanoparticles","authors":"M. Besharati, H. Cheraghian Radi, F. Molaabasi","doi":"10.1134/S1023193524601116","DOIUrl":"10.1134/S1023193524601116","url":null,"abstract":"In this work, we demonstrated the use of nano-porous glassy carbon electrode (NPGCE) decorated with nickel oxide nanoparticles (NiOx/NPGCE) as a highly sensitive and straightforward platform for the non-enzymatic electrochemical detection of ethanol. The glassy carbon electrode (GCE) was pretreated by applying constant oxidizing and reducing potentials, respectively, to create a porous carbon nanostructure with an increased surface area. This pretreatment enhanced the loading of NiOx and its activity towards ethanol electrooxidation. The modified electrode showed a wide ethanol concentration range (0.5–5 mM) with excellent linearity (r = 0.987), a very low detection limit of 75 μM, and a sensitivity of 924.3 µAcm–2µM–1 using controlled potential amperometry. The surface coverage of NiOx/NPGCE was estimated to be 4.86 × 10–11 mol cm–2. Furthermore, the specificity of the designed sensor was evaluated, and no cross-reactivity was observed. This developed sensitive platform offers a practical strategy for rapid, simple and cost-effective determination of ethanol in clinical and food samples.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 5","pages":"177 - 188"},"PeriodicalIF":0.8,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142322","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}

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Solution-Cast Perfluorinated Sulfocationic Exchange Membranes CTPEM with Lithium- and Sodium Cations Conductivity 具有锂和钠阳离子电导率的溶液铸造全氟硫化交换膜CTPEM

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-07-10 DOI: 10.1134/S1023193524601566

R. R. Kayumov, A. A. Lochina, A. N. Lapshin, A. V. Bakirov, A. A. Glukhov, L. V. Shmygleva

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Effect of Acetic Acid on the Resistance to Local Corrosion of 13% Chromium Steel in CO2-Containing Environments 醋酸对含co2环境中13%铬钢耐局部腐蚀性能的影响

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-07-10 DOI: 10.1134/S1023193524601608

I. Yu. Pyshmintsev, E. R. Mansurova, A. N. Maltseva, O. V. Vavilova, S. A. Kosteva, S. I. Kotov

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Gas Permeability of Modified Perfluorinated Proton-Exchange Sulfonic-Acid Membranes Operating in a Hydrogen–Air Fuel Cell 改性全氟质子交换磺酸膜在氢空气燃料电池中的透气性

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-07-10 DOI: 10.1134/S1023193524601438

K. M. Lyapishev, I. V. Falina, S. V. Timofeev, N. A. Kononenko

引用次数: 0

Electrical Conductivity of Concentrated Solutions of 1-Butyl-4-Methylpyridinium Tetraborate in Dimethylformamide 四硼酸1-丁基-4-甲基吡啶浓溶液在二甲基甲酰胺中的电导率

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-07-10 DOI: 10.1134/S1023193524601669

Yu. M. Artemkina, V. Yu. Dzyuba, U. N. Odinaev, V. V. Shcherbakov

{"title":"Electrical Conductivity of Concentrated Solutions of 1-Butyl-4-Methylpyridinium Tetraborate in Dimethylformamide","authors":"Yu. M. Artemkina, V. Yu. Dzyuba, U. N. Odinaev, V. V. Shcherbakov","doi":"10.1134/S1023193524601669","DOIUrl":"10.1134/S1023193524601669","url":null,"abstract":"The distance between ions and molecules in a solution of an ionic liquid is estimated. It is found that in the concentration range of 1–2 mol/L, the concentration dependence of the electrical conductivity should have a maximum associated with the formation of contact ion pairs in solution. The conductivity of concentrated solutions of 1-butyl-4-methylpyridinium tetrafluoroborate in dimethylformamide is measured in the temperature interval of 10–70°C and the density of these solutions is measured in the temperature interval of 10–60°C. The conductivity and the density are analyzed as a function of the temperature and the concentration. The density of solutions decreases linearly with increasing temperature, and the conductivity passes through a maximum as the concentration increases. As the temperature rises from 10 to 70°C, the concentration cmax that corresponds to the maximum conductivity κmax increases from 1.258 to 1.825 mol/L. The general form of the conductivity dependences on the temperature and the concentration is obtained using the normalized values of conductivity (κ/κmax) and concentration (c/cmax). In the κ/κmax vs. c/cmax coordinates, all the values of normalized conductivity κ/κmax fit a single curve. It is shown that for the concentration not exceeding ~1.0 mol/L, as the temperature rises, the conductivity κ increases in proportion to the limiting high-frequency conductivity of the solvent κ∞. Based on the analysis of the κ vs. κ∞ dependencies, the solvation numbers of ionic-liquid ions in dimethylformamide are shown to decrease from 2.89 to 1.09 as the concentration increases from ~0.1 to ~1.0 mol/L.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 4","pages":"150 - 161"},"PeriodicalIF":0.8,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142962","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}

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Ta Influence on Corrosion Resistance of Cr Coatings via Electrospark Deposition 电火花沉积对Cr涂层耐蚀性的影响

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-07-10 DOI: 10.1134/S1023193524601190

Feng Gao, Yuanchao Wang, Haimin Yan, Mingli Ding, Guanglin Zhu, Zijun Wang, Xiaoming Chen, Ce’an Guo, Jian Zhang

引用次数: 0

High-Entropy Columbites: Structure, Optical and Electrical Properties 高熵柱状体：结构、光学和电学性质

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-06-05 DOI: 10.1134/S102319352560004X

M. S. Koroleva, V. S. Maksimov, D. A. Korolev, I. V. Piir

引用次数: 0

Voltammetric and Discharge Characteristics of Hydrogen–Chlorate Power Source with Sulfuric Acid Electrolyte 硫酸电解液氯酸氢电源的伏安特性和放电特性

IF 0.8 4区工程技术

Russian Journal of Electrochemistry Pub Date : 2025-06-05 DOI: 10.1134/S1023193525600099

O. I. Istakova, D. V. Konev, M. A. Vorotyntsev

{"title":"Voltammetric and Discharge Characteristics of Hydrogen–Chlorate Power Source with Sulfuric Acid Electrolyte","authors":"O. I. Istakova, D. V. Konev, M. A. Vorotyntsev","doi":"10.1134/S1023193525600099","DOIUrl":"10.1134/S1023193525600099","url":null,"abstract":"Operation of a single cell of redox-flow hydrogen–halogenate power source converting the energy of the oxidation reaction of gaseous hydrogen by sodium chlorate in aqueous sulfuric-acid solution into electric energy with the use of a following membrane–electrode assembly: (–) H2, Pt–C//PEM//NaClO3, C (+) is studied. A load combined operation regime (which includes stages of potentiostatic and galvanostatic control) is applied, in order to take into account specific features of the chlorate electroreduction half-reaction, i.e., its redox-mediator autocatalytic mechanism (EC-autocat). For aqueous electrolytes containing various sulfuric acid contents, the system parameters determining the power and efficiency of the hydrogen–chlorate power source are found: the Faradaic and energy efficiencies, the average discharge power, and the time necessary for the reaching of the steady-state mode. The hydrogen–chlorate cell under study is found to function most efficiently with 5 M sulfuric-acid electrolyte: it reached the current density 0.25 A/cm2 within 1.5 min; it can convert chemical energy into electric one with the 55%-efficiency at the average specific discharge power of 0.23 W/cm2.","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"61 3","pages":"72 - 82"},"PeriodicalIF":0.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161827","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