Heterovalent zr for a diffusion cathode 4+ Doped impregnated materials, methods of making and using same

By controlling the lattice structure and synergistic process of heterovalent Zr4+ doping, a two-phase solid solution of BaAl2O7+BaZrO3 was formed, which solved the problem of insufficient stability of diffusion cathode impregnation materials in high humidity environments and achieved simultaneous optimization of stability and emission performance.

CN122102197APending Publication Date: 2026-05-29BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Filing Date
2026-01-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing diffusion cathode impregnation materials lack stability in high humidity environments, leading to performance degradation and making it difficult to work stably for extended periods in high humidity scenarios. Furthermore, modification processes cannot simultaneously improve stability and emission performance.

Method used

By employing a lattice modulation and process synergy method with heterovalent Zr4+ doping, a two-phase solid solution of BaAl2O7+BaZrO3 is formed by sintering at 1510~1540℃. This forms a protective system in which the stable phase encapsulates the active phase, preventing water molecule penetration, ensuring material stability, and maintaining emission performance.

Benefits of technology

It achieved a 33.5% improvement in the stability of the impregnated material under high temperature and high humidity conditions, while maintaining high emission performance, making it suitable for multiple application scenarios.

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Abstract

The application relates to the technical field of heat-emitting materials, in particular to a heterovalent Zr 4+ The application relates to a doped impregnated material, a preparation method and application thereof, the preparation method is a method of introducing heterovalent doping into an active salt for a diffusion cathode, a two-phase solid solution active salt is prepared through a liquid-phase mixing method combined with high-temperature calcination, and the heterovalent Zr 4+ The Zr-O bond energy with stronger bond energy is introduced into the active salt, the stability of the overall structure is increased, therefore, the Zr 4+ The environmental stability of the doped impregnated material is improved by 33.5% compared to traditional aluminate type impregnated materials. Through lattice regulation of heterovalent doping and process cooperation, the application realizes synchronous optimization of "stability improvement" and "emission performance maintenance" for the first time, and provides a new selection for performance optimization and multi-scene application of the impregnated material for a cathode.
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