Development of low band gap layered Bi6FeNiTi3O18 aurivillius phase ceramics for ferroelectric memory and cathode for lithium-oxygen batteries applications

The layered multiferroic perovskite oxides are excellent functional materials for ferroelectric memory applications and also show application potential for cathode materials in lithium-oxygen battery due to high surface area, good stability, easy processing and low price. Synthesis of uniformly dist...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2024-02, Vol.35 (6), p.433, Article 433
Main Authors: Singh, Chandra Bhal, Singh, Akhilesh Kumar, Verma, Narendra Kumar
Format: Article
Language:English
Subjects:
Bismuth compounds
Cathodes
Ceramics
Characterization and Evaluation of Materials
Chemical reactions
Chemistry and Materials Science
Electrode materials
Energy gap
Energy storage
Ferroelectric materials
Ferroelectricity
Functional materials
Grain boundaries
Lithium batteries
Materials Science
Optical and Electronic Materials
Oxides
Oxygen
Perovskite structure
Perovskites
Room temperature
Surface stability
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Summary:The layered multiferroic perovskite oxides are excellent functional materials for ferroelectric memory applications and also show application potential for cathode materials in lithium-oxygen battery due to high surface area, good stability, easy processing and low price. Synthesis of uniformly distributed layered perovskite oxides with low band gap, ionic-conducting and ferroelctric nature is still challenging. In this work, we have synthesized a new single-phase aurivillius phase Bi 6 FeNiTi 3 O 18 ceramics by high-energy ball mill mechano-chemical reaction. The Rietveld refinement of XRD data reveals that the compound Bi 6 FeNiTi 3 O 18 shows orthorhombic structure with space group P2/m and SEM images confirm the uniform layered morphology. Bi 6 FeNi Ti 3 O 18 ceramic have shown very high T c of 450 °C and typical relaxor behaviour. Impedance analysis reveals the effect of grains, grain boundaries and electrode on conductivity. Ferroelectric nature is confirmed by obtained P-E loop at room temperature. We also report much lower band gap ( E g = 1.87 eV) as compared to Bi 6 Fe 2 Ti 3 O 18 ( E g = 3.2 eV) ceramics which is due to Ni 3d state formation below Fe 3d state. The present work provide new path to engineer the functional properties of perovskite oxides for memory and energy storage applications.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-024-12215-1