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A kind of copper nano wire and preparation method thereof

A technology of copper nanowires and copper alloys, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of difficulty in large-scale preparation of copper nanowires, many pharmaceutical materials, and high equipment requirements , to achieve the effect of simple and feasible preparation method, low cost and increased cycle life

Active Publication Date: 2021-05-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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  • A kind of copper nano wire and preparation method thereof
  • A kind of copper nano wire and preparation method thereof
  • A kind of copper nano wire and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A kind of copper nano wire, its preparation method comprises the following steps:

[0034] (1) In an environment with a dew point of -50°C and an oxygen content of 10ppm, the lithium metal is heated to 200°C, and the lithium metal is in a molten state at this time;

[0035] (2) Metal copper is added in the metallic lithium of molten state, heat preservation 10min, mix, form the alloy of melting; Wherein, the atomic number ratio of copper and metallic lithium is 1:100;

[0036] (3) cooling the molten alloy to room temperature within 5min to obtain lithium-copper alloy CuLi100;

[0037] (4) Lithium-copper alloy CuLi100 is put into water, and metal lithium is removed through redox reaction of lithium and water to obtain copper nanowires.

Embodiment 2

[0039] A kind of copper nano wire, its preparation method comprises the following steps:

[0040] (1) In an environment with a dew point of -60°C and an oxygen content of 2ppm, the metal lithium is heated to 200°C, and the metal lithium is in a molten state at this time;

[0041] (2) Metal copper is added in the metallic lithium of molten state, heat preservation 10min, mix, form the molten alloy; Wherein, the atomic number ratio of copper and metallic lithium is 1:60;

[0042] (3) cooling the molten alloy to room temperature within 5min to obtain lithium-copper alloy CuLi60;

[0043] (4) Lithium-copper alloy CuLi60 is put into water, and metal lithium is removed through redox reaction of lithium and water to obtain copper nanowires.

Embodiment 3

[0045] A kind of copper nano wire, its preparation method comprises the following steps:

[0046] (1) In an environment with a dew point of -70°C and an oxygen content of 1ppm, the lithium metal is heated to 800°C, and the lithium metal is in a molten state at this time;

[0047] (2) Metal copper is added in the metallic lithium of molten state, heat preservation 10min, mix, form the molten alloy; Wherein, the atomic number ratio of copper and metallic lithium is 2:3;

[0048] (3) cooling the molten alloy to room temperature within 5min to obtain lithium-copper alloy Cu2Li3;

[0049] (4) Lithium-copper alloy Cu2Li3 is put into water, and metal lithium is removed through redox reaction of lithium and water to obtain copper nanowires.

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/16B22F1/00H01M10/052B82Y40/00B82Y30/00
CPCH01M10/052B82Y30/00B82Y40/00B22F9/16B22F1/0547Y02E60/10
Inventor 李晶泽贾维尚姚泽宇刘芋池屈思吉李超
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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