Nanoporous Copper-Zinc-Aluminum Shape Memory Alloy and Preparation and Application Thereof

Abstract

The present invention discloses a nanoporous copper-zinc-aluminum shape memory alloy and a preparation method and an application thereof. According to the method, firstly a pure Cu block, a pure Zn block and a pure Al block are proportioned in a certain mass ratio before being smelted to obtain a copper-zinc-aluminum alloy ingot; the obtained copper-zinc-aluminum alloy ingot is melt spun using a copper roller rapid quenching method under vacuum protection to obtain an ultrathin strip CuZnAl master alloy which is then subjected to an etching treatment with a solution containing chloride ions at a temperature of 0˜80° C. for 10˜300 minutes to obtain a nanoporous Cu/CuZnAl material; and finally the nanoporous CuZnAl material is sealed in a high vacuum quartz tube for a heat treatment to obtain a nanoporous copper-zinc-aluminum shape memory alloy having a superelastic single β phase at room temperature. The preparation method according to the present invention is highly controllable and can be used in the industry preparing electrode materials for lithium ion secondary batteries to remarkably improve the cyclic performance of electrode materials.

Dependencies are inferred from the claim text.