JPWO2020132149A5

JPWO2020132149A5 -

Info

Publication number: JPWO2020132149A5
Application number: JP2021535178A
Authority: JP
Publication date: 2022-07-21

Description

パックセメンテーション温度は、金属前駆体の融解温度より低く設定可能である。脱合金化溶液は、塩化水素（ＨＣｌ）、水酸化ナトリウム（ＮａＯＨ）、硝酸（ＨＮＯ _３）、リン酸（Ｈ_３ＰＯ_４）、もしくは過塩素酸（ＨＣｌＯ_４）、またはその組合せの溶液のうちの１つでもよい。 The packing cementation temperature can be set lower than the melting temperature of the metal precursor. The dealloying solution is a solution of hydrogen chloride (HCl), sodium hydroxide (NaOH), nitric acid ( HNO ₃ ), phosphoric acid (H ₃ PO ₄ ), or perchloric acid (HClO ₄ ), or a combination thereof. It may be one of.

Claims

Using the pack cementation process to produce a precursor alloy in the form of foil,
Dealloying the precursor alloy and
Using the dealloyed precursor alloy to form nanoscale copper struts and pores throughout the sample,
A method comprising obtaining the sample of layered microporous or nanoporous copper or full nanoporous copper.

The foil of the precursor alloy comprises an aluminum-copper alloy, the concentration of the aluminum being from about 20 atomic percent to about 85 atomic percent, the method.
The precursor alloy is treated with a dealloying solution of hydrochloric acid, the ligament size can be varied from about 50 nanometers to about 500 nanometers, and the method is further described.
The method of claim 1, wherein the pore size is controlled from about 10 nanometers to about 10 microns due to different corrosion behaviors for different aluminum-copper phases.

The method of claim 2, wherein when forming the precursor alloy, the pack cementation temperature is selected or varied from about 400 ° C to about 900 ° C.

The method according to claim 2, wherein the dealloying solution is an approximately 0.01 mol to approximately 20 mol hydrochloric acid solution at about 20 ° C. to about 100 ° C.

The method of claim 1, wherein the pack cementation process comprises using a mixed powder pack of one or more metal powders, fillers, and halide salt activators.

The dealloying process can be performed on the precursor alloy produced based on the chemical corrosion potential difference for a standard hydrogen electrode.
Aluminum is composed of magnesium (Mg), silicon (Si), chromium (Cr), niobium (Nb), zinc (Zn), titanium (Ti), molybdenum (Mo), tin (Sn), and manganese (Mn). The method of claim 2, wherein it can be replaced with another element that is more corrosive than copper and can contain a material selected from the group.

The method according to claim 5, wherein the halide salt activator is a material selected from the group consisting of sodium chloride (NaCl), sodium fluoride (NaF), and ammonium chloride (NH ₄ Cl).

The method of claim 7, wherein the packing cementation temperature can be set lower than the melting temperature of the metal precursor.

The dealloyed solution is selected from the group consisting of hydrogen chloride (HCl), sodium hydroxide (NaOH), nitric acid ( HNO ₃ ), phosphoric acid (H ₃ PO ₄ ), and perchloric acid (HClO ₄ ). , The method according to claim 2.

The method of claim 1, wherein the manufactured hierarchical microporous or nanoporous or full nanoporous copper (NPC) is used in a variety of energy devices due to its large surface area and unique three-dimensional structure.

A lithium ion battery anode current collector containing the sample according to claim 1, wherein the sample is coated with a tin active material, and the coated sample reacts with lithium ions to accumulate lithium ions. Lithium-ion battery anode current collector that absorbs volume expansion well during the charging and discharging cycling process.

A lithium ion battery anode current collector containing the sample according to claim 1, wherein the sample is coated with a tin active material.
An additional anode active material is filled into the nanocopper foam anode, wherein the material comprises at least one of a graphite-based material, a metal-based material, or an oxide-based material. Anode.

The additional anode active material is artificial graphite, natural graphite, soft carbon, hard carbon, tin-lithium-based alloy, silicon-lithium-based alloy, indium-lithium-based alloy, antimony-lithium-based alloy, germanium. -Lithium-based alloys, bismuth-lithium-based alloys, gallium-lithium-based alloys, and tin dioxide (SnO2), cobalt oxide (Co _{3O 4} ₎ , copper oxide (CuO), nickel oxide (NiO), and oxidation. The lithium ion battery anode current collector according to claim 12, selected from the group consisting of oxide-based materials comprising at least one of iron (Fe ₃ O ₄ ).