Method for synthesizing silver and cuprous oxide composite material by laser

A technology of cuprous oxide and laser synthesis, which is applied in the direction of electrical components, battery electrodes, nanotechnology, etc., can solve the problems of poor catalytic stability, high price, and influence on the popularization and application of fuel cell technology, and achieve low cost, easy operation, and high-quality products. yield rich effect

Inactive Publication Date: 2017-09-26
TIANJIN UNIV
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that most of the existing fuel cell cathode oxygen reduction catalyst materi...

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  • Method for synthesizing silver and cuprous oxide composite material by laser
  • Method for synthesizing silver and cuprous oxide composite material by laser
  • Method for synthesizing silver and cuprous oxide composite material by laser

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown in the schematic diagram of the synthesis device, the beaker is preferably placed 10-20 cm below the reflector, so that the output of the product is relatively large.

[0026] Specific steps are as follows:

[0027] (1) Using the silver-copper alloy target as the raw material, the surface of the target material is lightly polished with sandpaper, and then ultrasonically cleaned with dilute hydrochloric acid to remove the oxide layer on the surface; the composition ratio of the silver-copper alloy target is silver to copper atoms The ratio is 1:1, the purity is 99.99%, and the thickness and diameter of the target can be changed without affecting the product.

[0028] The optimal composition of the silver-copper alloy target is that the atomic ratio of silver to copper is 1:1. Too much silver or too little silver will affect the oxygen ...

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Abstract

The invention discloses a method for synthesizing a silver and cuprous oxide composite material by laser. The method comprises the following steps: taking silver-copper alloy as a raw material, polishing and cleaning the surface of a target material, placing the target material in a beaker, adding deionized water, starting a nanosecond pulsed laser device, and ablating a silver-copper alloy target; and taking out a solution in the beaker, carrying out centrifuging and enrichment on the solution, then placing the solution in a refrigerator and carrying out freeing and solidifying, and drying the frozen and solidified solution in a vacuum freezing and drying machine to obtain silver and cuprous oxide composite nanoparticles. By the synergistic effect of silver and cuprous oxide, the problems of weak oxygen adsorption of existing silver nano particles and poor oxygen reducing ability of the cuprous oxide are solved, and a fuel cell cathode oxygen reducing catalyst of which the oxygen reducing property is superior to that of a commercial precious metal platinum and carbon catalyst can be obtained in a common synthesis environment at normal temperature and under normal pressure. The process is simple and is easy to control; the yield of products is high; and therefore, the method is a green synthesis process.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a laser-synthesized silver and cuprous oxide composite material of a fuel cell cathode oxygen reduction catalyst. Background technique [0002] In the 21st century, energy consumption is gradually becoming the focus of attention of various countries in the world. All daily life and production activities in human society are inseparable from various energy sources. The resulting energy problems are further restricting the global economic development. With the energy shortage brought about by energy consumption and various All kinds of environmental pollution are gradually threatening the survival of human beings. In order to solve this series of energy problems, human beings are stepping up to explore sustainable and environmentally friendly new energy utilization methods to replace traditional energy technologies to improve energy utilization efficiency and reduce or eliminate environmental pollut...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/86H01M4/90B82Y40/00
CPCB82Y40/00H01M4/8652H01M4/88H01M4/9016H01M4/9041Y02E60/50
Inventor 杜希文李喆董存库
Owner TIANJIN UNIV
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