M. V. Kalinina, I. G. Polyakova, S. V. Myakin, T. V. Khamova, L. N. Efimova, I. Yu. Kruchinina
{"title":"用于中温燃料电池的 CeO2-Nd2O3 和 Gd2O3-La2O3-SrO-Ni(Co)2O3 - δ 体系中电解质和电极材料的合成与研究","authors":"M. V. Kalinina, I. G. Polyakova, S. V. Myakin, T. V. Khamova, L. N. Efimova, I. Yu. Kruchinina","doi":"10.1134/s108765962360117x","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\n<b>Abstract</b>—</h3><p>Using the method of the joint crystallization of solutions of nitrate salts with ultrasonic treatment, xerogels and highly dispersed mesoporous powders of the following composition are synthesized: (CeO<sub>2</sub>)<sub>1 – <i>x</i></sub>(Nd<sub>2</sub>O<sub>3</sub>)<sub><i>x</i></sub> (<i>x</i> = 0.02; 0.05; 0.10), Gd<sub>1 – <i>x</i></sub>Sr<sub><i>x</i></sub>Co<sub>0.5</sub>O<sub>3 – δ</sub> (<i>x</i> = 0.1, 0.15, 0.2, 0, 25), Gd<sub>0.4</sub>Sr<sub>0.1</sub>Ni<sub>0.5</sub>O<sub>3 – δ</sub>, and Gd<sub>0.125</sub>La<sub>0.125</sub>Sr<sub>0.25</sub>Co<sub>0.5</sub>O<sub>3 – δ</sub>; and based on them, nanoceramic materials with a crystalline cubic structure of the fluorite type, as well as an orthorhombic and tetragonal structure of the perovskite type with CSR ~ 55–90 nm (1300°С), respectively, are obtained. The physicochemical properties of the resulting ceramics are studied; it is revealed that it has an open porosity of 7–11% for the composition (CeO<sub>2</sub>)<sub>1 – <i>x</i></sub>(Nd<sub>2</sub>O<sub>3</sub>)<sub><i>x</i></sub> and 17–42% for materials with the Gd<sub>1 – <i>x</i></sub>Sr<sub><i>x</i></sub>Co<sub>0.5</sub>O<sub>3 – δ</sub>, Gd<sub>0.4</sub>Sr<sub>0.1</sub>Ni<sub>0.5</sub>O<sub>3 – δ</sub>, and Gd<sub>0.125</sub>La<sub>0.125</sub>Sr<sub>0.25</sub>Co<sub>0.5</sub>O<sub>3 – δ</sub> composition. Materials based on cerium oxide predominantly have the ionic (ion transport numbers <i>t</i><sub>i</sub> = 0.71–0.89 in the range 300–700°С) type of electrical conductivity due to the formation of mobile oxygen vacancies in the heterovalent substitution of Ce<sup>4+</sup> by Nd<sup>3+</sup>; and σ<sub>700°С</sub> = 0.31 × 10<sup>–2</sup> S/cm Solid solutions based on nickelate and lanthanum cobaltite have mixed electron-ionic conductivity, σ<sub>700°С</sub> = 0.59 × 10<sup>–1</sup> S/cm with transfer numbers <i>t</i><sub>e</sub> = 0.92–0.99 and <i>t</i><sub>i</sub> = 0.08–0.01. The prospects for using the obtained ceramic materials as solid oxide electrolytes and electrodes for medium-temperature fuel cells (FCs) are shown.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis and Research of Electrolyte and Electrode Materials in CeO2–Nd2O3 and Gd2O3–La2O3–SrO–Ni(Co)2O3 – δ Systems for Medium-Temperature Fuel Cells\",\"authors\":\"M. V. Kalinina, I. G. Polyakova, S. V. Myakin, T. V. Khamova, L. N. Efimova, I. Yu. Kruchinina\",\"doi\":\"10.1134/s108765962360117x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">\\n<b>Abstract</b>—</h3><p>Using the method of the joint crystallization of solutions of nitrate salts with ultrasonic treatment, xerogels and highly dispersed mesoporous powders of the following composition are synthesized: (CeO<sub>2</sub>)<sub>1 – <i>x</i></sub>(Nd<sub>2</sub>O<sub>3</sub>)<sub><i>x</i></sub> (<i>x</i> = 0.02; 0.05; 0.10), Gd<sub>1 – <i>x</i></sub>Sr<sub><i>x</i></sub>Co<sub>0.5</sub>O<sub>3 – δ</sub> (<i>x</i> = 0.1, 0.15, 0.2, 0, 25), Gd<sub>0.4</sub>Sr<sub>0.1</sub>Ni<sub>0.5</sub>O<sub>3 – δ</sub>, and Gd<sub>0.125</sub>La<sub>0.125</sub>Sr<sub>0.25</sub>Co<sub>0.5</sub>O<sub>3 – δ</sub>; and based on them, nanoceramic materials with a crystalline cubic structure of the fluorite type, as well as an orthorhombic and tetragonal structure of the perovskite type with CSR ~ 55–90 nm (1300°С), respectively, are obtained. The physicochemical properties of the resulting ceramics are studied; it is revealed that it has an open porosity of 7–11% for the composition (CeO<sub>2</sub>)<sub>1 – <i>x</i></sub>(Nd<sub>2</sub>O<sub>3</sub>)<sub><i>x</i></sub> and 17–42% for materials with the Gd<sub>1 – <i>x</i></sub>Sr<sub><i>x</i></sub>Co<sub>0.5</sub>O<sub>3 – δ</sub>, Gd<sub>0.4</sub>Sr<sub>0.1</sub>Ni<sub>0.5</sub>O<sub>3 – δ</sub>, and Gd<sub>0.125</sub>La<sub>0.125</sub>Sr<sub>0.25</sub>Co<sub>0.5</sub>O<sub>3 – δ</sub> composition. Materials based on cerium oxide predominantly have the ionic (ion transport numbers <i>t</i><sub>i</sub> = 0.71–0.89 in the range 300–700°С) type of electrical conductivity due to the formation of mobile oxygen vacancies in the heterovalent substitution of Ce<sup>4+</sup> by Nd<sup>3+</sup>; and σ<sub>700°С</sub> = 0.31 × 10<sup>–2</sup> S/cm Solid solutions based on nickelate and lanthanum cobaltite have mixed electron-ionic conductivity, σ<sub>700°С</sub> = 0.59 × 10<sup>–1</sup> S/cm with transfer numbers <i>t</i><sub>e</sub> = 0.92–0.99 and <i>t</i><sub>i</sub> = 0.08–0.01. The prospects for using the obtained ceramic materials as solid oxide electrolytes and electrodes for medium-temperature fuel cells (FCs) are shown.</p>\",\"PeriodicalId\":580,\"journal\":{\"name\":\"Glass Physics and Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2024-07-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Glass Physics and Chemistry\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1134/s108765962360117x\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Glass Physics and Chemistry","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1134/s108765962360117x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Synthesis and Research of Electrolyte and Electrode Materials in CeO2–Nd2O3 and Gd2O3–La2O3–SrO–Ni(Co)2O3 – δ Systems for Medium-Temperature Fuel Cells
Abstract—
Using the method of the joint crystallization of solutions of nitrate salts with ultrasonic treatment, xerogels and highly dispersed mesoporous powders of the following composition are synthesized: (CeO2)1 – x(Nd2O3)x (x = 0.02; 0.05; 0.10), Gd1 – xSrxCo0.5O3 – δ (x = 0.1, 0.15, 0.2, 0, 25), Gd0.4Sr0.1Ni0.5O3 – δ, and Gd0.125La0.125Sr0.25Co0.5O3 – δ; and based on them, nanoceramic materials with a crystalline cubic structure of the fluorite type, as well as an orthorhombic and tetragonal structure of the perovskite type with CSR ~ 55–90 nm (1300°С), respectively, are obtained. The physicochemical properties of the resulting ceramics are studied; it is revealed that it has an open porosity of 7–11% for the composition (CeO2)1 – x(Nd2O3)x and 17–42% for materials with the Gd1 – xSrxCo0.5O3 – δ, Gd0.4Sr0.1Ni0.5O3 – δ, and Gd0.125La0.125Sr0.25Co0.5O3 – δ composition. Materials based on cerium oxide predominantly have the ionic (ion transport numbers ti = 0.71–0.89 in the range 300–700°С) type of electrical conductivity due to the formation of mobile oxygen vacancies in the heterovalent substitution of Ce4+ by Nd3+; and σ700°С = 0.31 × 10–2 S/cm Solid solutions based on nickelate and lanthanum cobaltite have mixed electron-ionic conductivity, σ700°С = 0.59 × 10–1 S/cm with transfer numbers te = 0.92–0.99 and ti = 0.08–0.01. The prospects for using the obtained ceramic materials as solid oxide electrolytes and electrodes for medium-temperature fuel cells (FCs) are shown.
期刊介绍:
Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.