Method for recovering negative electrode materials from discarded lithium batteries and adding copper oxide to make functional graphene masterbatch

Abstract

A method for recycling negative electrode materials from waste lithium-ion batteries and converting them into functional graphene masterbatches by adding copper oxide involves disassembling the waste lithium-ion batteries, manually or mechanically crushing them, and then obtaining the internal negative electrode materials through washing, dehydration, drying, and sieving. These negative electrode materials are ordinary carbon powder, which is essentially artificial graphite with a carbon content of over 99%. The graphene is then processed through sintering, NMP ultrasonic cleaning, wet grinding, dehydration, and drying. Compared to traditional methods, this process does not require a large amount of energy to obtain single-layer and multi-layer graphene products. This process reduces the particle size of the graphene to between 1µm (single micrometer) and 0.01µm (nanometer), and then combines it with high-plasticity molecules and copper oxide of 1µm (single micrometer) to 0.01µm (nanometer) size using a melt-mixing method. This method does not require the addition of functional groups as connecting bonds. Unlike other graphene masterbatches that incorporate functional groups, carbon black, resins, etc., this technology uses only single-micron to nano-sized particles to fully melt, mix, and uniformly disperse them within high-plasticity molecules, ensuring consistent dispersion to form functional graphene masterbatches. A method for recycling negative electrode materials from waste lithium batteries and adding copper oxide to make functional graphene masterbatch, which is to disassemble the waste lithium batteries, remove them by manual or mechanical crushing, and then wash, dehydrate, The internal negative electrode materials are obtained by drying and sieving. These negative electrode materials are general carbon powders, most of which are artificial graphite, with a carbon content of more than 99%. They are then sintered, NMP ultrasonic cleaned, wet ground, dehydrated, Drying and other processes, this process does not require a lot of energy compared to the traditional single-layer and multi-layer graphene products, this process will make the graphene particle size to 1um (single micron) )~0.01 um (nanometer), and use melt mixing to combine with high plastic molecules and add 1um (single micron)~0.01um (nanometer) copper oxide. This method does not require the addition of functional groups.as a connection key. This is different from other graphene masterbatches that have functional groups, carbon black, resins, etc. This technology only uses single micron-nanometer particle size to fully melt mix and evenly disperse in high plastic molecules. , ensuring consistent dispersion to achieve the formation of functional graphene masterbatch.

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