D 63 Disign principles of electrochemical devices with solid oxide electrilyte [Text] / A. K. Demin, M. V. Perfiliev, A. S. Lipilin, B. L. Kuzin // International Symposium on Systems with the Fast Ionic Transport. - 1985. - P132 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ХИМИЯ -- УСТРОЙСТВА ЭЛЕКТРОХИМИЧЕСКИЕ -- ЭЛЕКТРОХИМИЧЕСКИЕ УСТРОЙСТВА -- ЭЛЕКТРОЛИТЫ ТВЕРДЫЕ -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ -- ЭЛЕКТРОЛИТЫ ОКСИДНЫЕ -- ОКСИДНЫЕ ЭЛЕКТРОЛИТЫ |
E 43 Electrical conductivity in perovskite type oxides MTi1-xFexO3-x/2 (M = Ca, Sr; x = 0-0.6) [Text] / L. A. Dunyushkina, E. A. Mashkina, A. K. Demin, B. V. Zhuravlev // Physics and chemistry of novel materials: 4th Bilateral Russian-German Symposium (Febr. 24-March 1, 1999): Progr. and abstr. - 1999. - 4.6 (2 pp.). - Bibliogr.: 3 ref. Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ПРОВОДИМОСТЬ ЭЛЕКТРОННАЯ -- ОКСИД -- ПЕРОВСКИТ -- КАЛЬЦИЙ -- СТРОНЦИЙ -- Ca -- Sr -- Ti -- Fe -- ТИТАН -- ЖЕЛЕЗО -- CaTiO3 -- SrTiO3 -- ЭЛЕКТРОПРОВОДНОСТЬ -- ТИТАНАТ КАЛЬЦИЯ -- ТИТАНАТ СТРОНЦИЯ |
D 90 Dunyushkina, L. A. Electrical conductivity of iron doped calcium titanate [Text] / L. A. Dunyushkina, A. K. Demin, B. V. Zhuravlev // Solid State Ionics. - 1999. - V. 116, N 1-2. - P85-88. - Bibliogr.: 5 ref. . - ISSN 0167-2738 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ЭЛЕКТРОПРОВОДНОСТЬ -- ТИТАНАТ КАЛЬЦИЯ -- КАЛЬЦИЙ -- Ca -- Fe -- ЖЕЛЕЗО -- ПРОВОДИМОСТЬ ИОННАЯ -- ПРОВОДИМОСТЬ ЭЛЕКТРОННАЯ -- CaTiO3 |
D 90 Dunyushkina, L. A. Electrical conductivity of iron-doped calcium titanate [Text] / L. A. Dunyushkina, A. K. Demin, B. V. Zhuravlev // Solid State Ionics. - 1999. - V. 116, N 1-2. - P85-88. - Bibliogr.: 5 ref. . - ISSN 0167-2738 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ЭЛЕКТРОПРОВОДНОСТЬ -- ЖЕЛЕЗО -- Fe -- ТИТАНАТ КАЛЬЦИЯ -- КАЛЬЦИЙ -- Ca -- Fe -- CaTiO3 -- ПРОВОДИМОСТЬ ИОННАЯ -- ПРОВОДИМОСТЬ ЭЛЕКТРОННАЯ |
D 38 Demin, A. K. Sensor for measuring the oxygen concentration in gas mixtures with unsteady pressure [Text] / A. K. Demin, B. V. Zhuravlev, S. I. Somov // Solid State Ionics. - 1998. - V. 112, N 3-4. - P355-359. - Bibliogr.: 4 ref. . - ISSN 0167-2738 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ХИМИЯ -- ДАТЧИКИ КИСЛОРОДНЫЕ -- КИСЛОРОДНЫЕ ДАТЧИКИ -- КИСЛОРОД ГАЗООБРАЗНЫЙ -- ГАЗООБРАЗНЫЙ КИСЛОРОД -- КОНЦЕНТРАЦИЯ КИСЛОРОДА -- СМЕСИ ГАЗОВЫЕ -- ГАЗОВЫЕ СМЕСИ -- ГАЗЫ КИСЛОРОДСОДЕРЖАЩИЕ -- КИСЛОРОДСОДЕРЖАЩИЕ ГАЗЫ -- ЭЛЕКТРОЛИТЫ ОКСИДНЫЕ -- ОКСИДНЫЕ ЭЛЕКТРОЛИТЫ -- ЭЛЕКТРОЛИТЫ ТВЕРДЫЕ -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ Аннотация: An analysis of the operation of an amperometric sensor with a diffusion channel at unsteady pressure of the analysed gas was carried out. Relations between sensor parameters, pressure jamp and sensor current were established. It was shown that the main reason for the distortion of a sensor reading is a large convective gas flow into the sensor chamber through the channel due to a gas pressure jamp. On the basis of the analysis, it is demonstrated how to change the sensor parameters to eliminate the error in the sensor reading. This may be achieved by decreasing the sensor chamber volume or changing the diffusion channel parameters. Two types of diffusion channels are considered: a channel filled by a porous medium and a narrow plate channel. The relations obtained provide the basis for choosing the corresponding sensor parameters in order to attain a given accuracy of the oxygen concentration measurement for maximum expected pressure changes |
P 43 Performance of a SOFC fed by ethanol reforming products [Text] / V. V. Galvita, V. D. Belyaev, A. V. Frumin, A. K. Demin, P. E. Tsiakaras, V. A. Sobyanin // Solid State Ionics. - 2002. - V. 152-153. - P551-554. - Bibliogr.: 10 ref. . - ISSN 0167-2738 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ХИМИЯ -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ -- ЭЛЕКТРОЛИТЫ ТВЕРДЫЕ -- ТОПЛИВНЫЕ ЭЛЕМЕНТЫ -- ЭЛЕМЕНТЫ ТОПЛИВНЫЕ -- ТВЕРДООКСИДНЫЕ ТОПЛИВНЫЕ ЭЛЕМЕНТЫ -- Pt -- ПЛАТИНА -- ГАЗОВЫЕ СМЕСИ -- СМЕСИ ГАЗОВЫЕ -- CH4 -- МЕТАН -- CO -- ОКСИД УГЛЕРОДА -- H2 -- ВОДОРОД -- ЭТАНОЛ Аннотация: Performance of a Pt based anode solid oxide fuel cell (SOFC) fed with a gas mixture containing H2, CO and CH4 (molar ratio 1:1:1) produced by external ethanol decomposition was studied. Experiments were performed at atmospheric pressure in the temperature range 660-800 C and anode potential vs. air -0.78 to -0.23 V. It was shown that at low temperature (660 C), the outlet gas contained the products of complete oxidation of the gas mixture, while high temperature (800 C) facilitated synthesis gas production |
T 44 Thermodynamic analysis of a methane fed SOFC system based on a protinic conductor [Text] / A. K. Demin, P. E. Tsiakaras, V. A. Sobyanin, S. Y. Hramova // Solid State Ionics. - 2002. - V. 152-153. - P555-560. - Bibliogr.: 4 ref. . - ISSN 0167-2738 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ХИМИЯ -- SOFC -- ТВЕРДООКСИДНЫЕ ТОПЛИВНЫЕ ЭЛЕМЕНТЫ -- ТОПЛИВНЫЕ ЭЛЕМЕНТЫ -- ЭЛЕМЕНТЫ ТОПЛИВНЫЕ -- ТЕРМОДИНАМИКА ЭЛЕКТРОХИМИЧЕСКАЯ -- ЭЛЕКТРОХИМИЧЕСКАЯ ТЕРМОДИНАМИКА -- ПРОТОННЫЕ ПРОВОДНИКИ -- ПРОВОДНИКИ ПРОТОННЫЕ -- АНАЛИЗ ТЕРМОДИНАМИЧЕСКИЙ -- ТЕРМОДИНАМИЧЕСКИЙ АНАЛИЗ -- МЕТАН -- CH4 -- CO -- ОКСИД УГЛЕРОДА -- H2O-CH4 Аннотация: Possibility of utilization of CO-containing fuel in a fuel cell based on a solid oxide protonic conductor (SOFC(H+)) is demonstrated. Thermodynamic analysis of a methane fed SOFC(H+) system is performed. It is stated that the fuel utilization depends on H2O/CH4 mole ratio in the feeding fuel mixture and has a maximum at the ratio of about 2.6. It is stated that average EMF of the SOFC(H+) is higher than that of an SOFC based on oxygen ion conductor under the same conditions and, hence, the maximum efficiency of the SOFC(H+) system is about 15 % higher than of the SOFC system based on oxygen ion conductor |
T 44 The oxidation of ethanol over Pt catalyst-electrodes deposited on ZrO2 (8 mol% Y2O3) [Text] / P. E. Tsiakaras, S. L. Douvartzides, A. K. Demin, V. A. Sobyanin // Solid State Ionics. - 2002. - V. 152-153. - P721-726. - Bibliogr.: 9 ref. . - ISSN 0167-2738 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ХИМИЯ -- Pt -- ПЛАТИНА -- ZrO2 -- ДИОКСИД ЦИРКОНИЯ -- Zr -- ЦИРКОНИЙ -- Y2O3 -- Y -- ОКСИД ИТТРИЯ -- ИТТРИЙ -- ЭТАНОЛ -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ -- ЭЛЕКТРОЛИТЫ ТВЕРДЫЕ -- ZrO2-Y2O3 -- YSZ Аннотация: The reaction of ethanol oxidation has been examined over a Pt polycrystalline film deposited on an yttria-stabilized zirconia (YSZ) electrochemical reactor. Experiments were carried out between 300 and 350 C at atmospheric total pressure and under open and closed circuit conditions. It was found that the electrochemically induced change in the catalytic rate of ethanol consumption is four orders of magnitude higher than the rate of ion transport through the solid electrolyte. The galvanostatic transient behaviors of the consumption rates of ethanol and oxygen and of the formation rates of carbon dioxide and acetaldehyde have also been recorded. Finally, the increase in the rate of the electrochemical supply of oxygen ions through the solid electrolyte was found to induce an almost 700 % increase on the yield of acetaldehyde. The results are interpreted on the basis of the theory of non-Faradaic electrochemical modification of catalytic activity (NEMCA) |
T 44 The effect of co-dopant addition on the properties of Ln0.2Ce0.8O2 дельта (Ln=Gd, Sm, La) solid-state electrolyte [Текст] / E. Yu. Pikalova, V. I. Maragou, A. N. Demina, A. K. Demin, P. E. Tsiakaras // Journal of Power Sources. - 2008. - Vol. 181, № 2. - С. 199-206 : рис. - Библиогр.: p. 206 (21 ref.) . - ISSN 0378-7753 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DOPED CERIA -- ELECTRICAL CONDUCTIVITY -- THERMAL EXPANSION COEFFICIENT -- CO-DOPANT |
H 99 Hydrogen production aided solid oxide electrochemical reformer fed with octane: A theoretical analysis [Текст] / A. A. Murashkina, V. I. Maragou, A. K. Demin, E. Yu. Pikalova, P. E. Tsiakaras // Journal of Power Sources. - 2008. - Vol. 181, № 2. - С. 304-312 : рис. - Библиогр.: p. 312 ( 11 ref.) . - ISSN 0378-7753 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SOLID OXIDE ELECTROCHEMICAL REFORMERS -- STEAM REFORMING -- PARTIAL OXIDATION |
C 47 Charge transfer properties of BaCe0.88Nd0.12O3-delta co-ionic electrolyte [Текст] / E. Gorbova, B. V. Zhuravlev, A. K. Demin, S. Q. Song, P. E. Tsiakaras // Journal of Power Sources. - 2006. - Vol. 157, № 2. - С. 720-723 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DELTA CO-IONIC ELECTROLYTE \\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Journal of Power Sources\\2006, V. 157, № 2, С. 720-723.pdf |
S 89 Structural, thermal, and electrical properties of La0.7Sr0.3Mn1-yFeyO3±delta [Текст] / A. N. Petrov, A. N. Demina, K. P. Polovnikova, A. K. Demin, E. A. Filonova // Inorganic Materials. - 2006. - Vol. 42, № 4. - С. 418-422. - Библиогр. : с. 422 (16 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): STRUCTURAL PROPERTIES \\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Inorganic Materials\\2006, V. 42, № 4, С. 418-422.pdf |
S 70 Demin, A. K. Solid oxide fuel cells in Russia [Текст] / A. K. Demin // NATO Science Series, II: Mathematics, Physics and Chemistry. - 2005. - № 202: Fuel Cell Technologies. - С. 11-18 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SOLID OXIDE |
C 47 Charge transfer in mixed proton, oxygen ion and electron solid oxide conductor [Текст] / A. K. Demin, E. V. Gorbova, M. V. Glumov, P. E. Tsiakaras // Ionics. - 2005. - Vol. 11, № 3-4. - С. 289-293. - Библиогр. : с. 293 (3 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): MASS TRANSFER -- PROTON-OXYGEN Аннотация: Analysis of the equivalent scheme of the mixed proton-oxygen ion-electron conductor (MPOEC) allowed to obtain relationships between parameters of the membrane (total conductivity and transfer numbers) and parameters of the charge and mass transfer through the membrane (partial ion and electron currents, the specific flux of hydrogen at the cathode membrane surface) under regime of electrochemical reforming. It was stated that presence of proton conductivity in addition to oxygen ion conductivity led to increase of total flux of produced hydrogen. However, under conditions typical for the electrochemical reforming of methane into hydrogen, the specific hydrogen flux is about four times lower in the case when the membrane has proton-electron conductivity than in the case when the membrane has oxygen ion-electron conductivity. \\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Ionics\\2005, V. 11, № 3-4, С. 289-293.pdf |
D 38 Demin, A. K. Solid-oxide fuel elements on co-ionic electrolytes [Текст] / A. K. Demin, S. Yu. Khramova // Fundamental'nye Problemy Elektrokhimicheskoi Energetiki, Materialy Mezhdunarodnoi Konferentsii, 5th, Saratov, Russian Federation, June 24-28, 2002. - 2002. - С. 50-54 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SOLID-OXIDE FUEL ELEMENTS |
S 98 Synthesis and electrophysical properties of (1 - x)Ce0.8Gd0.2O2 дельта + xTiO2 (x = 0–0.06) solid-state solutions [Текст] / E. Yu. Pikalova, V. I. Marago, A. K. Demin, A. A. Murashkina, P. E. Tsiakaras // Solid State Ionics. - 2008. - Vol. 179, № 27-32. - С. 1557-1561. : рис. - Библиогр.: с. 1561 (12 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): TiO2 -- CeO2 Аннотация: In the present work the electrical properties of (1 ? x)Ce0.8Gd0.2O2 ? ? + xTiO2 (x = 0–0.06) synthesized by the standard ceramic technology were investigated, in a wide range of oxygen partial pressures (0.21–10? 20atm at 900 °C) and temperatures (600–900 °C), both in air and H2 + 3%H2O atmosphere. It was found, that only the introduction of above 1 mol% TiO2 decreases the sintering temperature of Ce0.8Gd0.2O2 ? ?. The values of total electrical conductivity do not change significantly with the content of the sintering aid up to 3 mol%, while the activation energy of total conductivity in air decreases considerably with the introduction of TiO2 into Ce0.8Gd0.2O2 ? ? from 87 to 67 kJ/mol; however, it is independent of x up to 0.03. The dependence of the total conductivity on the oxygen partial pressure is characterized by three regions. In the intermediate region (10? 10–10? 14) the conductivity behavior is described according to the oxygen vacancy model. The n-type conductivity region curve of Ce0.8Gd0.2O2 ? ? is fitted to a -1/5 slope. The increase of TiO2 content leads to the slope increase at ? 1/6, ? 1/8 and ? 1/9 for 1, 2 and 3 mol% TiO2, respectively, due to the trapping of electrons by Ti4+. 1 mol% doping increases the electrolytic region of Ce0.8Gd0.2O2 ? ? from 10? 10 to 10? 13atm. Finally, the optimal content of TiO2 from the viewpoint of sintering and electrical properties was found to be 2 mol%.???? \\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Solid State Ionics\\2008, V. 179, № 27-32, С. 1557-1561.pdf |
F 96 Fuel options for solid oxide fuell cells: a thermodynamic analysis [Текст] / S. L. Douvartzides, F. A. Coutelieris, A. K. Demin, P. Tsiakaras // AIChE Journal. - 2003. - Vol. 49, № 1. - С. 248-257. Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ТЕРМОДИНАМИЧЕСКИЙ АНАЛИЗ Дескрипторы: FUEL OPTIONS -- SOLID OXIDE FUELL Аннотация: The eligibility of natural gas (methane), methanol, ethanol, and gasoline as fuels for the generation of electrical power in solid oxide fuel cells (SOFCs) is discussed in terms of efficiency. Each raw fuel was assumed to be processed in a steam reformer to provide a hydrogen-rich gas mixture to the SOFC feedstream. An SOFC system, consisting of an electrochemical section and a reformer, was analyzed thermodynamically assuming initial steam/fuel feed ratios at conditions where carbon deposition is thermodynamically impossible, at atmospheric total pressure, and in the temperature range of 800-1,200 K. Results were obtained in terms of both electromotive force (emf) output and efficiency. Methane seems to be the most appropriate fuel option, with an SOFC system efficiency close to 96%. Furthermore, ethanol and methanol were very promising alternative options (94% and 91%, respectively), while gasoline (83%) utilization requires special reforming conditions. \\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\AIChE Journal\\2003, V. 49, № 1, С. 248-257.pdf |
F 76 Forsed convectional heat transfer in solid oxide fuel cells [Текст] / F. A. Coutelieris, A. K. Demin, S. L. Douvartzides, P. E. Tsiakaras // Ionics. - 2003. - Vol. 9, № 1-2. - С. 83-87. Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): SOLID OXIDE FUEL CELLS -- HEAT TRANSFER \\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Ionics\\2003, V. 9, № 1-2, С. 83-87.pdf |
E 27 Efficiency of ethanol-fed SOFC power plant based on a protonic conductor / A. K. Demin, S. Yu. Hramova, P. E. Tsiakaras, V. A. Sobyanin, V. D. Belyaev // 9th EuroConference on Ionics (Ixia, Rhodes, Greece, 15-21 Sept. 2002) : abstr. - 2002. - С. 48. Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ETHANOL-FED SOFC POWER PLANT -- PROTONIC CONDUCTOR |
E 43 Electrical conductivity in BaTi1-xFexO3-дельта system / E. A. Mashkina, L. A. Dunyushkina, A. K. Demin, M. Gobbles, R. Hock, A. Magerl // Fifth European Solid Oxide Fuel Cell Forum (1-5 July 2002) : proc. - Lucerne/Switzerland, 2002. - Vol. 2. - С. 695-699. Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ELECTRICAL CONDUCTIVITY -- BaTi1-xFexO3-дельта |