SnO2 / MXene modified aqueous zinc ion battery negative electrode material and preparation method and application thereof

SnO2/MXene modified aqueous zinc-ion battery anode materials were prepared by urea-assisted ball milling exfoliation and hydrothermal synthesis, solving the problems of poor conductivity and cycle stability, and realizing aqueous zinc-ion batteries with high rate performance and long life.

CN122393261APending Publication Date: 2026-07-14SHUANGDENG GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHUANGDENG GRP CO LTD
Filing Date
2026-04-29
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing aqueous zinc-ion battery anode materials suffer from poor conductivity, zinc dendrite growth, hydrogen evolution corrosion, and poor cycle stability. Furthermore, existing SnO2/MXene composite materials are easily oxidized in aqueous environments, failing to effectively address the core pain points of aqueous zinc-ion batteries.

Method used

A SnO2/MXene modified aqueous zinc-ion battery anode material was prepared by urea-assisted ball milling and hydrothermal synthesis. Urea protected the structural integrity of MXene during ball milling and created a weakly alkaline environment in the hydrothermal reaction to promote the uniform nucleation of SnO2 and ZnO nanocrystals, inhibit MXene oxidation, and improve conductivity and cycle stability.

Benefits of technology

It achieves high rate performance and long cycle life of aqueous zinc-ion batteries, effectively suppresses zinc dendrite growth and hydrogen evolution corrosion, and improves the overall performance of the battery.

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Abstract

The application relates to the field of batteries, in particular to a SnO2 / MXene modified aqueous zinc ion battery negative electrode material and a preparation method and application thereof; the SnO2 / MXene modified aqueous zinc ion battery negative electrode material comprises a ZnO active main body, SnO2 nanocrystals and a MXene conductive framework. The application combines urea-assisted ball milling stripping and urea-assisted hydrothermal synthesis, utilizes the multiple functions of urea including a stripping buffer, an oxidation inhibitor and a nucleation regulator, realizes high-quality stripping of MXene and uniform loading of an active component, and is specially aimed at the core problems of serious hydrogen evolution corrosion, easy growth of zinc dendrites and easy collapse of an electrode structure in an aqueous zinc ion battery. Through the synergistic effect of SnO2 for improving the hydrogen evolution overpotential and MXene for inducing uniform deposition, the rate performance of the battery is effectively improved.
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