Manufacturing method and application of grapheneink by recycling negative electrode materials from discarded lithium series batteries

The method of manufacturing graphene ink from waste lithium-ion batteries addresses environmental and cost issues by producing high-conductivity graphene from recycled materials, suitable for various electronic and printed products.

TW202631497AInactive Publication Date: 2026-08-01陈文贤 +1
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Patent Information

Application Number
TW114102193
Authority / Receiving Office
TW · TW
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-01-20
Publication Date
2026-08-01
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Conventional methods for producing graphene using carbon materials result in air and water pollution, high production costs due to low yield, and inefficient extraction processes.

Method used

A method to manufacture graphene ink from recycled negative electrode materials of waste lithium-ion batteries, involving disassembly, washing, dehydration, sieving, sintering, and ultrasonic cleaning to produce single-layer and multi-layer graphene powder, which is then mixed with ink to form hydrophobic graphene ink.

Benefits of technology

Reduces environmental impact, lowers production costs, and enhances conductivity, enabling applications in conductive films, electrodes, electrotherapy products, and flexible electronics.

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Abstract

is then sintered, NMP ultrasonic cleaned, wet ground, dehydrated, dried, etc. This process does not require a lot of energy compared to traditional methods to obtain a single layer of Multilayer graphene products, this process will make the graphene particles size between 1um (single micron) and 0.01um (nanometer), and use solution mixing method to combine with dispersant to form graphene The dispersant is then mixed with the ink to form a graphene ink having non-hydrophilic properties.
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