Titanium anode with titanium tantalum nitride interlayer and cerium doped coating and method of making

By preparing a titanium-tantalum nitride intermediate layer by magnetron sputtering and a cerium-doped oxide coating by thermal decomposition, the problems of low density, poor interlayer bonding and high noble metal content of titanium-based coated anodes were solved, and a high-efficiency, stable electrolytic performance and long life of titanium anodes were achieved.

CN122189743APending Publication Date: 2026-06-12JIANGXI STANDE ELECTRODE TECH CO LTD
View PDF 3 Cites 0 Cited by

Patent Information

Application Number
CN202610258128.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-04
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing titanium-based coated anodes have low interlayer density, are prone to defects leading to electrolyte penetration, and have a tendency for coatings to crack and peel due to mismatched interlayer chemical composition. Furthermore, the cerium doping ratio is not precisely controlled, the amount of precious metals used is high and has poor compatibility, the preparation process is prone to thermal stress cracking, and the performance optimization effect is limited.

Method used

A titanium-tantalum nitride intermediate layer was prepared by magnetron sputtering, and a cerium-doped active coating was prepared by thermal decomposition. By precisely controlling the Ir:Ce molar ratio, the chemical compatibility and thermal expansion matching between the intermediate layer and the active layer were optimized, and the amount of precious metal used was reduced. Pretreatment was used to enhance the activation of the substrate surface and annealing to improve the adhesion.

Benefits of technology

It effectively blocks electrolyte penetration, enhances interlayer bonding, optimizes catalytic performance, extends anode life, reduces precious metal usage, is suitable for multiple electrolysis scenarios, and improves electrode stability and efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122189743A_ABST
    Figure CN122189743A_ABST
Patent Text Reader

Abstract

The application discloses a titanium anode with a titanium-tantalum nitride intermediate layer and a cerium-doped coating and a preparation method, and belongs to the technical field of electrolytic anodes. The titanium anode comprises, from inside to outside, a titanium base, a titanium-tantalum nitride intermediate layer and a cerium-doped Ir-Ta active coating. The titanium-tantalum nitride intermediate layer is prepared by a magnetron sputtering method, and the active coating is prepared by a thermal decomposition method. The preparation method comprises titanium base substrate pretreatment, magnetron sputtering deposition of the titanium-tantalum nitride intermediate layer and optional annealing, preparation of a cerium, iridium and tantalum precursor coating solution, and preparation of an active layer. The application fundamentally blocks electrolyte penetration, avoids titanium base passivation, optimizes interlayer chemical compatibility and thermal expansion matching, improves coating adhesion, improves electrode catalytic activity and structural stability, reduces the amount of noble metals, and is controllable in process parameters and suitable for multiple electrolysis scenarios. The prepared titanium anode has low electrode potential, long accelerated service life and strong coating adhesion.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Preparation method of low-cost titanium-based coating titanium anode

    CN113881978A

  • Anode material coating for PEM water electrolysis hydrogen production, anode material and preparation method

    CN117364121A

  • Titanium anode, titanium anode preparation method, electrolytic copper foil and application

    CN120485890A