{"title":"掺杂 Sm 的钕镍酸盐的结构、表面和氧传输特性","authors":"V.A. Sadykov , E.M. Sadovskaya , Yu.N. Bespalko , E.A. Smal’ , N.F. Eremeev , I.P. Prosvirin , O.A. Bulavchenko , M.A. Mikhailenko , M.V. Korobeynikov","doi":"10.1016/j.ssi.2024.116596","DOIUrl":null,"url":null,"abstract":"<div><p>Ruddlesden – Popper phases are promising materials for solid oxide fuel cell/electrolyzer air electrodes, oxygen separation membranes and other electrochemical devices due to their high oxygen mobility provided by a cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. This work aims at studying structural, surface and oxygen transport properties of Sm-doped Nd nickelates sintered in a furnace at the temperatures in the range of 800–1250 °C and using electron beams at the temperatures in the range of 1150–1250 °C. Nd<sub>2-x</sub>Sm<sub>x</sub>NiO<sub>4+δ</sub>, <em>x</em> = 0.2 and 0.4 are synthesized by a modified Pechini technique and characterized by X-ray diffraction, X-ray photoelectron spectroscopy and temperature-programmed isotope exchange of oxygen with C<sup>18</sup>O<sub>2</sub> in a flow reactor. The phase composition studies show the ability to obtain single-phase materials at certain sintering conditions. Nd/Sm ratio on the surface is close to stoichiometric one, while (Nd + Sm)/Ni ratio on the surface is below stoichiometric. Such materials possess a high oxygen mobility (<em>D</em><sup><em>⁎</em></sup> up to ∼10<sup>−7</sup> cm<sup>2</sup>/s at 700 °C).</p></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structural, surface and oxygen transport properties of Sm-doped Nd nickelates\",\"authors\":\"V.A. Sadykov , E.M. Sadovskaya , Yu.N. Bespalko , E.A. Smal’ , N.F. Eremeev , I.P. Prosvirin , O.A. Bulavchenko , M.A. Mikhailenko , M.V. Korobeynikov\",\"doi\":\"10.1016/j.ssi.2024.116596\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ruddlesden – Popper phases are promising materials for solid oxide fuel cell/electrolyzer air electrodes, oxygen separation membranes and other electrochemical devices due to their high oxygen mobility provided by a cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. This work aims at studying structural, surface and oxygen transport properties of Sm-doped Nd nickelates sintered in a furnace at the temperatures in the range of 800–1250 °C and using electron beams at the temperatures in the range of 1150–1250 °C. Nd<sub>2-x</sub>Sm<sub>x</sub>NiO<sub>4+δ</sub>, <em>x</em> = 0.2 and 0.4 are synthesized by a modified Pechini technique and characterized by X-ray diffraction, X-ray photoelectron spectroscopy and temperature-programmed isotope exchange of oxygen with C<sup>18</sup>O<sub>2</sub> in a flow reactor. The phase composition studies show the ability to obtain single-phase materials at certain sintering conditions. Nd/Sm ratio on the surface is close to stoichiometric one, while (Nd + Sm)/Ni ratio on the surface is below stoichiometric. Such materials possess a high oxygen mobility (<em>D</em><sup><em>⁎</em></sup> up to ∼10<sup>−7</sup> cm<sup>2</sup>/s at 700 °C).</p></div>\",\"PeriodicalId\":431,\"journal\":{\"name\":\"Solid State Ionics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2024-05-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Solid State Ionics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0167273824001449\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Ionics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167273824001449","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
Ruddlesden - 波普相是一种很有前途的材料,可用于固体氧化物燃料电池/电解槽空气电极、氧气分离膜和其他电化学装置,这是因为波普相的氧气迁移率很高,而氧气迁移的合作机制既包括常规的氧气迁移,也包括高流动性的间隙氧迁移。这项工作旨在研究在 800-1250 ℃炉温下烧结的 Sm 掺杂钕镍酸盐的结构、表面和氧迁移特性,以及在 1150-1250 ℃炉温下使用电子束烧结的钕镍酸盐的结构、表面和氧迁移特性。Nd2-xSmxNiO4+δ, x = 0.2 和 0.4 是用改良的 Pechini 技术合成的,并通过 X 射线衍射、X 射线光电子能谱以及在流动反应器中用 C18O2 进行温度编程的氧同位素交换进行了表征。相组成研究表明,在一定的烧结条件下,可以获得单相材料。表面的钕/钐比接近于化学计量比,而表面的(钕+钐)/镍比低于化学计量比。这种材料具有很高的氧迁移率(700 °C 时 D⁎ 高达 ∼10-7 cm2/s)。
Structural, surface and oxygen transport properties of Sm-doped Nd nickelates
Ruddlesden – Popper phases are promising materials for solid oxide fuel cell/electrolyzer air electrodes, oxygen separation membranes and other electrochemical devices due to their high oxygen mobility provided by a cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. This work aims at studying structural, surface and oxygen transport properties of Sm-doped Nd nickelates sintered in a furnace at the temperatures in the range of 800–1250 °C and using electron beams at the temperatures in the range of 1150–1250 °C. Nd2-xSmxNiO4+δ, x = 0.2 and 0.4 are synthesized by a modified Pechini technique and characterized by X-ray diffraction, X-ray photoelectron spectroscopy and temperature-programmed isotope exchange of oxygen with C18O2 in a flow reactor. The phase composition studies show the ability to obtain single-phase materials at certain sintering conditions. Nd/Sm ratio on the surface is close to stoichiometric one, while (Nd + Sm)/Ni ratio on the surface is below stoichiometric. Such materials possess a high oxygen mobility (D⁎ up to ∼10−7 cm2/s at 700 °C).
期刊介绍:
This interdisciplinary journal is devoted to the physics, chemistry and materials science of diffusion, mass transport, and reactivity of solids. The major part of each issue is devoted to articles on:
(i) physics and chemistry of defects in solids;
(ii) reactions in and on solids, e.g. intercalation, corrosion, oxidation, sintering;
(iii) ion transport measurements, mechanisms and theory;
(iv) solid state electrochemistry;
(v) ionically-electronically mixed conducting solids.
Related technological applications are also included, provided their characteristics are interpreted in terms of the basic solid state properties.
Review papers and relevant symposium proceedings are welcome.