Copper nanowire and preparation method thereof

Abstract

The invention provides a copper nanowire and a preparation method thereof. The preparation method comprises the following steps that in the environment with the dew point no more than -50 DEG C and the oxygen content mo more than 10ppm, lithium metal is heated to 200-800DEG C, and therefore the lithium metal is in the molten condition; copper is added in to the lithium metal in the molten condition, heat preservation is conducted and lasts for 5-15min, and mixing is conducted to form molten alloy; the molten alloy is cooled to the room temperature, and lithium-copper alloy is manufactured; andthe lithium in the lithium-copper alloy is removed, and the copper nanowire is manufactured. The copper nanowire is manufactured by a single method, the temperature in the preparation method is low,and the shape and appearance of the copper nanowire can be controlled. In addition, the cost of the preparation method is low, and the copper nanowire can be prepared at a large scale. The prepared copper nanowire can be used as a three-dimensional fluid collector of a lithium battery, and can be directly used in the fields of transparent conductive films, conductive ink and the like.

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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