Method for synthesizing copper nanowire gel by one-pot method

Abstract

The invention discloses a method for synthesizing copper nanowire gel by a one-pot method. For a long term, the research on a negative electrode of a traditional lithium battery industry mostly concentrates on a negative electrode material, but the research on a copper foil which is related to the negative electrode material and is used as a negative material current collector is quite scarce. The negative electrode copper foil of a traditional lithium battery only has one function of serving as the current collector, and is slightly inadequate in space of the battery and cost, therefore, the copper foil is enabled to have double functions by using the point, i.e., a new innovation of the copper foil for serving as the current collector and participating in lithium battery reaction like the negative electrode material is realized. The invention relates to a copper nanowire elementary substance; the copper nanowire elementary substance is prepared into the copper foil by using a sheet pressing machine, thus obtaining a negative electrode current collector of a lithium battery; by a performance test of the lithium battery, the material is found to remarkably enhance the capacity of the lithium battery; the first-time charge and discharge capacity reaches 1800mAhg<-1>; besides, the stability is more excellent; the copper foil has significant advantage in comprehensive performance compared with that of a commercial copper foil serving as the negative electrode current collector of the lithium battery.

Description

technical field [0001] The invention relates to a simple method for preparing negative electrode current collectors in lithium batteries, in particular to a method for synthesizing copper nanowire gel in one pot. Background technique [0002] Lithium-ion batteries, as the most cutting-edge rechargeable batteries, have attracted widespread attention from all over the world in the past ten years. Copper foil for lithium-ion batteries not only serves as the carrier of the negative electrode active material in the battery, but also serves as the collection and transmission of the negative electrode electron flow. Therefore, copper foil as a current collector has a great influence on the electrochemical performance of lithium batteries. At present, most lithium-ion battery manufacturers at home and abroad mostly use electrolytic copper foil to make electrode and negative electrode current collectors. Traditional lithium batteries have a lot of research on positive electrode mate...

AI Technical Summary

Problems solved by technology

At present, most lithium-ion battery manufacturers at home and abroad mostly use electrolytic copper foil to make electrode and negative electrode current collectors. Traditional lithium batteries have a lot of research on positive electrode materials and negative electrode materials, but there are very few studies on negative electrode current collectors. The function is relatively simple

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