Zinc battery positive electrode material, preparation method and application thereof

By introducing lanthanum ions into the cathode material of zinc batteries, an open nanoflower morphology is formed and lattice-level uniform doping is achieved, which solves the problems of low specific capacity and poor cycle stability of vanadium-based cathode materials, improves the electrochemical performance and stability of zinc batteries, and makes them suitable for mass production.

CN121601642APending Publication Date: 2026-03-03INST OF WENZHOU ZHEJIANG UNIV +2
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Patent Information

Application Number
CN202511699715.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-19
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing vanadium-based cathode materials have low actual specific capacity, poor cycle stability, and long activation cycles. Furthermore, vanadium oxides are easily soluble in aqueous electrolytes, leading to structural collapse.

Method used

Using vanadium pentoxide, lanthanum nitrate, and other raw materials, a one-pot hydrothermal synthesis process is employed to introduce lanthanum ions, forming an open nanoflower morphology and achieving lattice-level uniform doping, thereby improving the specific surface area and conductivity of the material.

Benefits of technology

It significantly improves the capacity performance and activation speed of zinc batteries, solves the problems of structural collapse and rapid capacity decay of traditional vanadium-based cathode materials, extends the service life of batteries, and has mild and controllable process conditions, making it easy to scale up production.

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Abstract

The invention discloses a zinc battery positive electrode material, a preparation method and application thereof, and the preparation method comprises the following steps: dissolving vanadium pentoxide, oxalic acid hydrate, lanthanum nitrate hydrate and hydrogen peroxide in a solvent to obtain a mixed solution, transferring the mixed solution to a hydrothermal kettle for heating reaction, separating and washing a solid product to obtain the zinc battery positive electrode material. A one-pot hydrothermal synthesis preparation process is adopted, the process conditions are mild and controllable, raw materials are easy to obtain, the cost is controllable, complex and precise instruments are not needed, the equipment investment is low, the process steps are simple, and continuous large-scale production is easy to achieve.
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