一种非碳基量子点 / 纳米片杂化导体与纳米碳管共复合导电浆料及其制备方法与应用

By co-compositing non-carbon-based quantum dot/nanosheet hybrid conductors with carbon nanotubes, a three-dimensional synergistic conductive network is constructed, which solves the problem of poor dispersibility of carbon nanotubes in conductive slurries and improves both conductivity and dispersibility. This method is suitable for batteries for new energy vehicles, energy storage batteries, and batteries for digital electronic products.

CN116646522BActive Publication Date: 2026-07-17FEIMI (NINGBO) NEW ENERGY TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FEIMI (NINGBO) NEW ENERGY TECH CO LTD
Filing Date
2023-06-02
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Carbon nanotubes are difficult to disperse uniformly in conductive pastes, which affects their conductivity.

Method used

A three-dimensional synergistic conductive network of "point, line, and surface" was constructed by co-composite non-carbon-based quantum dot/nanosheet hybrid conductors with carbon nanotubes. Conductive slurry was prepared by mixing carbon nanotubes, MTe2 nanosheets, black phosphorus quantum dots, dispersants, and binders, and then processing the mixture using a disperser and a high-pressure homogenizer.

Benefits of technology

It improves the conductivity and dispersibility of the conductive paste, enhances electronic conduction, shortens the lithium-ion diffusion path, slows down the volume expansion of the electrode material, reduces internal resistance, and improves rate performance.

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Abstract

本发明提供一种非碳基量子点 / 纳米片杂化导体与纳米碳管共复合导电浆料及其制备方法与应用,所述导电浆料由按以下质量百分含量计的原料制成:纳米碳管1.0%‑10.0%、MTe2纳米片0.1%‑0.5%、黑磷量子点0.001%‑0.008%、分散剂0.2%‑1.0%、粘结剂2%‑5%,余量为溶剂,溶剂为水或N‑甲基吡咯烷酮(NMP)。本发明制备的复合导电浆料分散性好、导电率高,适用于新能源汽车动力电池、储能电池、数码电子产品电池、固态电池的正极与负极。
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