Metal material obtained by method for regulating and controlling crystal face orientation of metal coating and application of metal material

A technology of crystal plane orientation and metal coating, applied in metal material coating process, coating, liquid chemical plating, etc., can solve the problems of uneven reaction and low reactivity, reduce the use of precious metals, and simplify the production process , the effect of large potential value

Active Publication Date: 2022-05-13
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The primary purpose of the present invention is to solve the problem of low reactivity and uneven reaction at the electrode interface due to the difference in crystal plane orientation, and proposes a method for regulating the crystal plane orientation of the metal coating by selecting a suitable base material to obtain Efficient - uniform electrochemical reaction interface

Method used

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  • Metal material obtained by method for regulating and controlling crystal face orientation of metal coating and application of metal material
  • Metal material obtained by method for regulating and controlling crystal face orientation of metal coating and application of metal material
  • Metal material obtained by method for regulating and controlling crystal face orientation of metal coating and application of metal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The commercial 30-micron non-preferential crystal face copper foil and 200-crystal face fully-preferred single crystal face copper foil were soaked in dilute sulfuric acid solution for 2 minutes to remove the surface oil and oxide layer, and then rinsed with deionized water to remove the residual acid solution. Then the copper foil was soaked in NaH 2 PO 2 .2H 2 O(10g L -1 ), CS(NH 2 ) 2 (70g L -1 ), SnCl 2 .H 2 O(10g L -1 ), and HCL (2g L -1 ), the soaking time is 30s and 2min. After soaking, use deionized water to wash off the residual tin plating solution, and dry it in a drying oven at 60°C for 3h to obtain tin metal with a single crystal plane orientation. Coated copper-based material (all-selective copper foil), this preparation process can also be based on the process figure 2 Simple industrial production. The crystallographic structure of the tin coating was then characterized using XRD and backscattered electron diffraction (EBSD). It can be seen f...

Embodiment 2

[0050] The tin-coated copper-based material and commercial copper foil prepared in Example 1 were used as current collectors for aqueous zinc-ion batteries, which were cut to 1 cm 2 The discs were used as electrodes, using 2mol ZnSO 4 As the electrolyte and glass fiber as the separator, a 2025 Zn button half-cell was assembled, and the charge and discharge parameters were set to 5mAcm -2 -2mAhcm -2 (current density and areal capacity), the charge cut-off voltage is 0.5V, and the correlation curve of cycle number and Coulomb efficiency is obtained from Figure 7-8 It was found that the copper current collector material with low zinc affinity (commercial Cu foil without tin plating) was short-circuited in only 41 hours, and even the tin-plated multi-oriented crystal plane copper current collector (multi-oriented Sn) could only Maintaining a normal Coulomb efficiency of 120h, this copper current collector (single-oriented Sn) material with an all-preferential single-crystal pla...

Embodiment 3

[0056] Electroless silver plating was carried out using commercial copper foil (multi-oriented Cu) and Cu(111) with all preferred single crystal plane and Cu(200) with all preferred single crystal plane as substrates, and the silver plating solution was made of AgNO 3 (100gL -1 ), thiourea (1gL -1 ), PVP (0.5gL -1 )HNO 3 (10gL -1 ) composition, first use dilute nitric acid for chemical polishing and degreasing, then use deionized water to wash off residual acid, soak in the plating solution for 2 minutes, take out and wash and dry. XRD was used to characterize the crystal structure of the silver coating. from Figure 13 It is found that the Ag(111) coating with the all-preferred single-crystal plane orientation can be obtained by using Cu(111) with all-preferred single-crystal plane as the substrate.

[0057] To investigate the effect of the silver coating on all-preferential single crystal plane on the hydrogen evolution activity of the electrode, LSV test was also carr...

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Abstract

The invention relates to a metal material obtained by a method for regulating and controlling the crystal face orientation of a metal coating and application of the metal material. Firstly, a metal substrate which is simple, cheap and easy to obtain and has specific crystal orientation is screened out, then the metal substrate serves as a reducing agent, a thin metal coating is plated through a chemical soaking method, and the crystal face orientation of the metal coating can be controlled through the crystal orientation of the substrate; the method can be used to prepare a highly preferred, even fully preferred metal coating. Finally, the plating layer with the specific crystal orientation is successfully used for improving the deposition-stripping reversibility of a metal negative electrode and the activity of an electrode catalytic interface.

Description

Technical field: [0001] The invention belongs to the technical field of a method for regulating and controlling crystal plane orientation of metal materials, and particularly relates to a metal material obtained by a method for regulating and controlling crystal plane orientation of a metal coating layer and its application. Background technique: [0002] The environmental pollution caused by the massive consumption of fossil energy has become an important factor restricting the development of contemporary society. Therefore, the development of renewable clean energy has become a mainstream direction of the future energy system. Renewable energy sources such as solar energy and wind energy are affected by climatic conditions and cannot output energy stably, which affects the convenient use of these clean energy sources. Therefore, the development of a stable energy storage system is an important guarantee for clean energy to efficiently and conveniently serve the society. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/31H01M4/66
CPCC23C18/31H01M4/661H01M4/667
Inventor 王海燕谢春霖杨泽芳唐有根张旗姬慧敏
Owner CENT SOUTH UNIV
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