Airat M. Kuchkaev, Aidar M. Kuchkaev, A. V. Sukhov, A. S. Ivanov, Kh. R. Khayarov, A. B. Dobrynin, O. G. Sinyashin, D. G. Yakhvarov
{"title":"Electrochemically Induced Phosphorus–Methyl Bond Formation Involving the Complex [Co(Ph2PCH2P(Ph)2PPPPP(Ph)2CH2PPh2)]BF4","authors":"Airat M. Kuchkaev, Aidar M. Kuchkaev, A. V. Sukhov, A. S. Ivanov, Kh. R. Khayarov, A. B. Dobrynin, O. G. Sinyashin, D. G. Yakhvarov","doi":"10.1134/S1023193524020046","DOIUrl":"10.1134/S1023193524020046","url":null,"abstract":"<p>The electrochemical properties of [Co(Ph<sub>2</sub>PCH<sub>2</sub>P(Ph)<sub>2</sub>PPPPP(Ph)<sub>2</sub>CH<sub>2</sub>PPh<sub>2</sub>)]BF<sub>4</sub> complex have been studied by the method of cyclic voltammetry. The electrochemical methylation of this complex have been cunducted in the presence of iodomethane which has led to the formation of phosphonium salt—methylene bis(methyldiphenylphosphonium) diiodide as final product. It was found, that this reaction proceeds with the breakage of the P–P bonds in polyphosphorus ligand and with the formation of new P–C bonds.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811832","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}
R. D. Guskov, M. P. Popov, I. V. Kovalev, A. P. Nemudry
{"title":"Study of the Phase Stability of La0.6Sr0.4MnO3 – δ Oxide with Mixed Oxygen–Electronic Conductivity","authors":"R. D. Guskov, M. P. Popov, I. V. Kovalev, A. P. Nemudry","doi":"10.1134/S102319352401004X","DOIUrl":"10.1134/S102319352401004X","url":null,"abstract":"<p>This work is devoted to the study of thermodynamic characteristics and phase stability of oxides with a perovskite structure using both classical and original methods for the studying of compounds with similar composition. An oxide with mixed oxygen–electronic conductivity La<sub>0.6</sub>Sr<sub>0.4</sub>MnO<sub>3 – δ</sub> obtained by solid-state synthesis was chosen as object of research. The stoichiometric range of this composition has been established at temperatures of 600–900°C in the region of oxygen partial pressure up to 3 × 10<sup>–4</sup> atm. The chemical potential of oxygen in the gas phase is calculated, as well as the dependences of the oxygen partial molar enthalpy and entropy in the oxide in the nonstoichiometry range δ = 0.01–0.012.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811833","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 the Nature of a Heterogeneous Dopant on the Transport and Thermodynamic Properties of Composites Based on n-Methyl-n-Butylpiperidinium Tetrafluoroborate","authors":"A. S. Ulikhin, A. V. Izmodenova, N. F. Uvarov","doi":"10.1134/S1023193524010130","DOIUrl":"10.1134/S1023193524010130","url":null,"abstract":"<p>Composite solid electrolytes based on <i>n</i>-methyl-<i>n</i>-butylpiperidinium tetrafluoroborate [(CH<sub>3</sub>)(C<sub>4</sub>H<sub>9</sub>)C<sub>5</sub>H<sub>10</sub>N]BF<sub>4</sub>–A (where A is γ-Al<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>) were synthesized, and their thermal and electrically conductive properties were studied. The conductivity of the (1 – <i>x</i>)[C<sub>10</sub>H<sub>22</sub>N]BF<sub>4</sub>–<i>x</i>Al<sub>2</sub>O<sub>3</sub> composites passes through a maximum at <i>x</i> ~ 0.9, reaching 4.6 × 10<sup>–4</sup> S/cm at 130°C for 0.1[C<sub>10</sub>H<sub>22</sub>N]BF<sub>4</sub>–0.9Al<sub>2</sub>O<sub>3</sub>. The absence of a thermal effect at the melting temperature of the ionic salt, showing high ionic conductivity, indicates that at <i>x</i> ≥ 0.9 <i>n</i>-methyl-<i>n</i>-butylpiperidinium tetrafluoroborate is in the amorphous state, and ion transport occurs along the ionic salt/oxide interface. In the case of the [C<sub>10</sub>H<sub>22</sub>N]BF<sub>4</sub>–SiO<sub>2</sub> composites, the effect of a heterogeneous dopant on the ion transport is less significant, and the conductivity is due to the ionic salt of the additive present in the pores.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811841","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":"Depolarization at the Electrodeposition of the Negative Component of Eutectic Alloys","authors":"Yu. D. Gamburg","doi":"10.1134/S102319352402006X","DOIUrl":"10.1134/S102319352402006X","url":null,"abstract":"<p>At the electrochemical deposition of alloys various phenomena are observed that lead to changes in the kinetics and thermodynamics of the processes. In particular, as a result of changing in the nature of the electrode surface, both the exchange current densities and the transfer coefficients of each of the components changed. Further, during the formation of solid solutions, the equilibrium potentials of the components change due to the non-zero enthalpy and entropy of mixing. At the deposition of eutectic-type alloys (that is, a mixture of grains of individual components), each of the metals does not deposit on the entire electrode surface but only on its own surface. In the latter case, there is a change in the diffusion pattern of the components as compared to the deposition of individual metals: it remains unchanged in the outer part of the diffusion layer but there is a condensation of the diffusion fields of the components near the surface, similar to the case of diffusion to the matrix of microelectrodes or to individual nuclei of a new phase. This also leads to a change in the diffusion part of the overpotential of the components’ deposition. The diffusion of ions of the discharging negative component of an alloy representing a mechanical mixture of the metals’ A and B grains to the grain surface of this component in the model of a partially blocked electrode is considered. At a constant potential, the local current density of the component is shown to increase as a result of the diffusion acceleration. The magnitude of the relative increase in the current and the corresponding magnitude of apparent depolarization are found, as compared between the deposition of an individual metal and the codeposition of the same component into an alloy.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811954","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}
A. Yu. Stroeva, Z. N. Ichetovkin, M. S. Plekhanov, V. A. Borisov, D. A. Shlyapin, P. V. Snytnikov, A. V. Kuzmin
{"title":"The Lanthanum-Scandate- and Lanthanum-Cobaltite-Based Composite Materials for Proton–Ceramic Electrochemical Devices","authors":"A. Yu. Stroeva, Z. N. Ichetovkin, M. S. Plekhanov, V. A. Borisov, D. A. Shlyapin, P. V. Snytnikov, A. V. Kuzmin","doi":"10.1134/S1023193524010117","DOIUrl":"10.1134/S1023193524010117","url":null,"abstract":"<p>A citrate–nitrate synthesis of individual materials La<sub>0.9</sub>Sr<sub>0.1</sub>Sc<sub>1 –</sub> <sub><i>x</i></sub>Co<sub><i>x</i></sub>O<sub>3 – δ</sub> and La<sub>0.9</sub>Sr<sub>0.1</sub>CoO<sub>3 – δ</sub> and their based composites is performed. Composite materials are obtained by solid-phase mixing in different percentages of individual phases, followed by pressing and sintering. The obtained individual and composite materials are explored by X-ray phase analysis and dilatometry. The electrical conductivity of the obtained samples is studied by a direct-current four-probe method depending on the temperature and the gas phase composition. Unique studies of the ability of composites to the ammonia direct decomposition directly at the electrode layer of the fuel cell are carried out.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811809","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}
I. F. Sakhapov, Z. N. Gafurov, A. O. Kantyukov, A. A. Kagilev, I. K. Mikhailov, E. M. Zueva, D. N. Buzyurova, V. M. Babaev, S. A. Shteingolts, R. R. Fayzullin, G. E. Bekmukhamedov, D. G. Yakhvarov
{"title":"Erratum to: Specific Behavior of the Electrochemically Generated Organonickel Sigma-Complex [NiBr(Tcpp)(bpy)], where Tcpp is 2,4,6-Tricyclopentylphenyl, bpy is 2,2'-Bipyridine","authors":"I. F. Sakhapov, Z. N. Gafurov, A. O. Kantyukov, A. A. Kagilev, I. K. Mikhailov, E. M. Zueva, D. N. Buzyurova, V. M. Babaev, S. A. Shteingolts, R. R. Fayzullin, G. E. Bekmukhamedov, D. G. Yakhvarov","doi":"10.1134/S1023193524010087","DOIUrl":"10.1134/S1023193524010087","url":null,"abstract":"","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811839","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":"Erratum to: Improving the Electrochemical Energy Storage Capacity of the Renewable Carbon Derived from Industrial Tea Waste","authors":"Ayşenur Karamustafa, Sözer Sözer, Kürşad Oğuz Oskay, Merve Buldu-Akturk, Emre Erdem, Gökçen Akgül","doi":"10.1134/S1023193524020113","DOIUrl":"10.1134/S1023193524020113","url":null,"abstract":"","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811966","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}
I. V. Kovalev, R. D. Guskov, V. P. Sivtsev, M. I. Gongola, M. P. Popov, A. P. Nemudry
{"title":"Oxygen Transport in Microtubular Membranes La0.5Sr0.5Fe1 – xNbxO3 – δ","authors":"I. V. Kovalev, R. D. Guskov, V. P. Sivtsev, M. I. Gongola, M. P. Popov, A. P. Nemudry","doi":"10.1134/S1023193524010051","DOIUrl":"10.1134/S1023193524010051","url":null,"abstract":"<p>Perovskite-like oxides based on lanthanum–strontium ferrites are considered to be promising electrode materials for use in various types of fuel cells, and the strategy of modifying these materials by partial substitution of iron with highly charged ferroactive cations has proved to be an efficient way to increase their chemical stability. In this work, the results of a study of the permeability of microtubular oxygen membranes based on La<sub>0.5</sub>Sr<sub>0.5</sub>Fe<sub>1 –</sub> <sub><i>x</i></sub>Nb<sub><i>x</i></sub>O<sub>3 – δ</sub> are presented for the first time. The activation energy of oxide bulk diffusion was found (20 ± 4 kJ/mol).</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811963","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}
R. A. Manzhos, N. S. Komarova, A. S. Kotkin, V. K. Kochergin, T. R. Prikhodchenko, A. G. Krivenko
{"title":"Synthesis and Electrocatalytic Activity of Graphene–Phosphorene Structures Decorated with Cobalt Atoms","authors":"R. A. Manzhos, N. S. Komarova, A. S. Kotkin, V. K. Kochergin, T. R. Prikhodchenko, A. G. Krivenko","doi":"10.1134/S1023193524020071","DOIUrl":"10.1134/S1023193524020071","url":null,"abstract":"<p>Nitrogen-doped few-layered graphene structures are synthesized by plasma-assisted electrochemical exfoliation of graphite and used in the preparation of composites with phosphorene structures obtained by supersonic exfoliation of a porous black-phosphorus electrode covered with preliminarily deposited cobalt. The catalytic activity in the hydrogen evolution reaction is studied for the few-layered graphene and phosphorene structures, as well as their mixtures. The mixed electrocatalysts demonstrate the highest activity in the hydrogen evolution reaction.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140811972","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":"Synthesis and Study of the Physicochemical Properties of Composite Solid Electrolytes (C4H9)3CH3NBF4–Cnanodiamonds","authors":"I. A. Stebnitsky, N. F. Uvarov, Yu. G. Mateyshina","doi":"10.1134/S1023193524010105","DOIUrl":"10.1134/S1023193524010105","url":null,"abstract":"<p>The paper presents the results of studies of the structural, thermal, and transport properties of solid composite electrolytes (1 – <i>x</i>)(C<sub>4</sub>H<sub>9</sub>)<sub>3</sub>CH<sub>3</sub>NBF<sub>4</sub>–<i>x</i>C<sub>ND</sub> (where C<sub>ND</sub> are nanodispersed diamonds, 0 ≤ <i>x</i> < 1, <i>x</i> is the mole fraction). It was shown by the Pawley method that the crystal structure of the low-temperature (C<sub>4</sub>H<sub>9</sub>)<sub>3</sub>CH<sub>3</sub>NBF<sub>4</sub> phase is described by the space symmetry group <i>P</i>4<sub>2</sub>/<i>ncm</i>. The addition of an inert nanodiamond additive led to an increase in the electric conductivity of the composite electrolyte by four orders of magnitude to 1.3 × 10<sup>–3</sup> S/cm at 145°C and at <i>x</i> = 0.98. The theoretical dependences adequately describe the experimental data in the concentration range 0 ≤ <i>x</i> ≤ 0.99 at temperatures of 84 and 127°C.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140812517","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}