Ionic conductivity in the novel complex oxide Ba0.95La1.05InO4.025 with Ruddlesden-Popper structure

IF 2.6 4区化学 Q3 CHEMISTRY, PHYSICAL

Ionics Pub Date : 2025-05-15 DOI:10.1007/s11581-025-06383-1

E. Abakumova, T. Kuznetsova, V. Zaviralova, V. Gnatyuk, D. Pyankov, N. Tarasova

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引用次数: 0

Abstract

High oxygen-ion and proton conductivity is an important property for energy materials, especially for those to be used in solid oxide fuel cells and electrolyzes. The Ruddlesden-Popper complex oxides are a prospective class of oxygen-ion conducting electrolytes. Well-known oxygen-ion conductors with the classic perovskite ABO₃ structure have already been successfully doped using the donor-doping method. However, results on the application of this donor-doping method to Ruddlesden-Popper complex oxides are not so extensive. In this paper, novel complex oxide Ba_0.95La_1.05InO_4.025 with a Ruddlesden-Popper structure has been synthesized and investigated for the first time. The oxygen-ion conductivity values for the new donor doped (La³⁺ → Ba²⁺) complex oxide Ba_0.95La_1.05InO_4.025 are about 0.5 orders of magnitude higher than those for the undoped BaLaInO₄ composition. The oxygen-ion transport numbers of the new composition Ba_0.95La_1.05InO_4.025 reach approximately 90% at 300°C.

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Ruddlesden-Popper结构Ba0.95La1.05InO4.025复合氧化物的离子电导率

高氧离子和质子电导率是能源材料的重要特性，特别是用于固体氧化物燃料电池和电解质的材料。Ruddlesden-Popper络合物氧化物是一类很有前途的氧离子导电电解质。众所周知，具有经典钙钛矿ABO3结构的氧离子导体已经使用供体掺杂方法成功掺杂。然而，将这种给体掺杂方法应用于Ruddlesden-Popper配合物氧化物的研究结果并不广泛。本文首次合成并研究了具有Ruddlesden-Popper结构的新型配合氧化物Ba0.95La1.05InO4.025。新给体掺杂（La3+→Ba2+）配合氧化物Ba0.95La1.05InO4.025的氧离子电导率值比未掺杂的BaLaInO4成分高约0.5个数量级。在300℃时，新组合物Ba0.95La1.05InO4.025的氧离子输运数达到90%左右。

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来源期刊

Ionics 化学-电化学

CiteScore

5.30

自引率

7.10%

发文量

427

审稿时长

2.2 months

期刊介绍： Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.