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A kind of metal electrode activation method based on oxygen-metal battery

A metal battery and metal electrode technology, applied in the direction of fuel cell half-cell, primary battery half-cell, secondary battery maintenance/maintenance, etc., to achieve the effect of reducing side reactions, low consumption, and improving discharge power

Active Publication Date: 2017-05-10
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, through patent, non-patent literature search and market research, it has not been found that the metal electrode is damaged by increasing the oxide film.

Method used

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  • A kind of metal electrode activation method based on oxygen-metal battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Degrease and polish

[0026] Clean the pre-prepared 5cm long, 1cm wide and 2mm thick aluminum plate with household detergent, and then sand it with No. 60, No. 240, No. 500, No. 800, No. 1000, and No. 2000 sandpaper. After polishing, wash it with water .

[0027] Step 2: Alkaline Wash

[0028] Prepare a 1mol / L NaOH solution, soak the polished aluminum plate in step 1 in the NaOH solution for 5 minutes, and then take it out and wash it with clean water.

[0029] Step Three: Neutralization

[0030] Put the aluminum plate cleaned in step 2 in 5mol / L HNO 3 In the solution for 10 seconds, take out and wash with water.

[0031] Step 4: Anodizing

[0032] Arrange the prefabricated 5cm long, 2cm wide, 2mm thick graphite plate and the aluminum plate of step 3 in parallel, and immerse in 15% H 2 SO 4 Among them, the two are immersed in 4cm and separated by 2cm. Adjust the current density to 10mA / cm 2 , Discharge at room temperature for 20 minutes, then take it ou...

Embodiment 2

[0046] Step 1: Degrease and polish

[0047] Clean the pre-prepared 5cm long, 1cm wide and 2mm thick magnesium board with household detergent, and then polish it with No. 60, No. 240, No. 500, No. 800, No. 1000, and No. 2000 sandpaper, and wash it with water after polishing net.

[0048] Step 2: Acetone Cleaning

[0049] Soak the polished aluminum plate in step 1 in acetone for 5 minutes, take it out and wash it with clean water.

[0050] Step 3: Anodizing

[0051] Arrange the pre-prepared 5cm long, 2cm wide, 2mm thick graphite plates and the magnesium plates of step 2 in parallel, and immerse them in the electrolyte. The proportion of the electrolyte is 2mol / L of KOH, 0.5mol / L of Na 2 CO 3 , 1mol / L Na 2 SiO 3 , graphite plate and magnesium plate immersed in 4cm, 2cm apart. Adjust the current density to 10mA / cm 2 , Discharge at room temperature for 30 minutes, then take it out, wash it with water, and dry it with a hair dryer.

[0052] Step 4: Broken oxide film

[005...

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PUM

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Abstract

The invention relates to a metal electrode activation method for an oxygen-metal battery. By forcedly oxidizing a substrate, the volume of the substrate is expanded, and the stress is increased to lead the substrate to peel off. According to the metal electrode activation method, oxygen content in an electrolyte is increased by increasing oxygen partial pressure on an electrolyte level, oxygenating microbubbles and through stirring and oxygenating modes; oxygen is diffused and penetrates through a compact oxygen membrane of a metal electrode under the driving of oxygen concentration and fluid pressure of the electrolyte, enters the oxygen membrane and is combined with metal to generate an oxide, the volume of the metal after combined with the oxygen through diffusion is expanded, the hard and brittle oxygen membrane is broken and peeled off due to stress, and the metal substrate is exposed, therefore, the purpose of metal electrode activation before battery discharging is achieved.

Description

technical field [0001] The invention relates to a novel activation method based on an oxygen-metal battery, which can effectively activate a metal electrode and improve the performance of the electrode. The oxygen-metal batteries here comprise air batteries. Background technique [0002] The emergence of batteries has greatly facilitated the power supply for outdoor operations. People have successively developed batteries such as lead storage batteries, nickel-metal hydride storage batteries, lithium-ion batteries, polymer lithium batteries, and fuel cells. But because they have more or less problems such as "low voltage, unsuitable for excessive discharge, unfriendly environment, scarce raw materials, high price, high dependence on infrastructure, unsafe, and fewer cycles". [0003] Oxygen-metal batteries are a way of generating electricity by utilizing the chemical energy generated by the oxidation of metals. The overall reaction is the reaction of metals and oxygen to fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M12/06
CPCH01M10/42H01M12/06Y02E60/10
Inventor 张涛徐洪杰
Owner BEIHANG UNIV
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