A kind of copper nano wire and preparation method thereof

Abstract

The invention provides a copper nanowire and a preparation method thereof. The preparation method comprises the following steps: heating metallic lithium to 200-800°C in an environment with a dew point not higher than -50°C and an oxygen content not higher than 10ppm, so that Lithium metal is in a molten state; copper is added to lithium metal in a molten state, kept warm for 5 to 15 minutes, and mixed to form a molten alloy; the molten alloy is cooled to room temperature to obtain a lithium-copper alloy; lithium-copper alloy Lithium removal, the preparation of copper nanowires. The present invention prepares copper nanowires through a simple method, the temperature of the preparation process is low, and the morphology of copper nanowires can also be controlled; in addition, the preparation method is low in cost, and copper nanowires can be prepared on a large scale, and the prepared copper Nanowires can be used as three-dimensional current collectors for lithium batteries, and can also be directly used in transparent conductive films, conductive inks and other fields.

Description

technical field [0001] The invention belongs to the technical field of copper nanowires, and in particular relates to a copper nanowire and a preparation method thereof. Background technique [0002] Copper nanowires have high electronic conductivity, good photoelectric performance and catalytic performance, and have potential application prospects in the fields of three-dimensional current collectors, microelectronic devices, chemistry, transparent conductive films, transparent electrodes, and conductive inks. However, its high cost and inability to prepare on a large scale limit its wide commercial application. [0003] At present, the main methods for preparing copper nanowires include liquid-phase synthesis, vapor-phase deposition, and template methods. However, these methods use a lot of pharmaceutical materials, take a long time or have relatively high requirements for equipment, which not only leads to high costs in the process of preparing copper nanowires, but also...

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Problems solved by technology

However, these methods use a lot of pharmaceutical materials, take a long time or require relatively high equipment, resulting in not only high cost in the process of preparing copper nanowires, but also difficult to achieve large-scale preparation of copper nanowires.

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