Improved nano porous copper thin film and preparation method thereof

Abstract

The invention discloses an improved nano porous copper thin film. The surface of nano porous copper is modified by a single layer of graphene. The invention further provides a preparation method of the improved nano porous copper thin film. The preparation method comprises the following steps: placing a target material of manganese and a target material of copper manganese alloy at a target position in the cavity of a magnetic-control sputtering film-preparing instrument; fixing a monocrystalline silicon wafer to a tray right above the target position, vacuumizing, setting sputtering conditions, and opening the target material of pure manganese to start sputtering, so as to prepare a pure-manganese thin film on the silicon wafer; opening the target material of the copper manganese alloy to start sputtering, and forming a layer of copper manganese alloy thin film on the pure-manganese thin film; corroding the copper manganese alloy thin film so as to obtain the nano porous copper thin film; steeping and washing the prepared nano porous copper thin film so as to remove hydrochloric acid residual liquid on the surface; placing the clean nano porous copper thin film in graphene gel for soaking; removing the graphene gel floating on the surface so as to obtain the nano porous copper thin film compounded with the graphene. The nano porous copper thin film disclosed by the invention has the electrochemical cycling properties of high specific capacity and stability.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a nanoporous copper film, in particular to an improved nanoporous copper film and a preparation method thereof. Background technique [0002] Due to their high specific surface area, high specific capacity, excellent electrochemical catalytic performance and stable cycle performance, nanoporous metal materials have attracted extensive attention in the field of electrochemistry, and are considered as potential electrode materials for new energy storage devices. The research results show that the electrochemical capacity of nanoporous metals is much larger than that of existing graphite materials, which has a dramatic improvement in the battery life, but its further promotion is greatly limited due to the high cost of raw materials and preparation process. . [0003] As far as the preparation technology of the original alloy thin film is concerned, it mainly includes the bulk al...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the prior art, the present invention provides an improved nanoporous copper film and its preparation method. The improved nanoporous copper film and its preparation method solve the problem of battery Technical issues with poor battery life

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