A Passivated Metal Electrode Based on Oxygen-Metal Battery

A metal battery and metal passivation technology, applied in battery electrodes, fuel cell half-cells, primary battery half-cells, circuits, etc., can solve problems such as passivation of metal electrodes, and achieve finer grains and alloys The effect of homogenizing the composition and reducing the amount of hydrogen evolution

Active Publication Date: 2018-05-01
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, there is no passivation scheme for metal electrodes of oxygen-metal batteries

Method used

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  • A Passivated Metal Electrode Based on Oxygen-Metal Battery
  • A Passivated Metal Electrode Based on Oxygen-Metal Battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the passivation effect of adding Zr element to Al

Embodiment approach

[0031] In this embodiment, the selected additive element is Zr, and the nominal composition is determined to be Al:Zr=9:1 (atomic ratio), that is, Al 90 Zr 10 , the implementation method is as follows:

[0032] ● Preparation:

[0033] Step 1: Ingredients

[0034] Press Al 90 Zr 10 The nominal composition weighs each elemental element and becomes the raw material for preparing the master alloy ingot.

[0035] Step 2: Smelting

[0036] Put the weighed Zr and Al elements into the copper crucible of the vacuum arc melting furnace for melting.

[0037] The smelting conditions are: the vacuum degree in the vacuum arc melting furnace during smelting is 8×10 -3 Below Pa, fill with 0.5Mpa high-purity argon, smelt for 1-2 minutes each time, and smelt for 3-4 times.

[0038] Step Three: Spray Casting

[0039] Put the master alloy obtained in step 2 into a vacuum induction metal melt rapid cooling solidification furnace (rapid solidification technology), spray it into a metal mol...

Embodiment 2

[0051] Embodiment 2: add Cr element to the passivation effect of Fe

[0052] In the present embodiment, the selected added element is Cr, and the nominal composition is determined to be Fe:Cr=9:1 (atomic ratio), that is, Fe 90 Cr 10 , the implementation method is as follows:

[0053] ● Preparation:

[0054] Step 1: Ingredients

[0055] Press Fe 90 Cr 10 The nominal composition weighs each elemental element and becomes the raw material for preparing the master alloy ingot.

[0056] Step 2: Smelting

[0057] Put the weighed Fe and Cr elements into the copper crucible of the vacuum arc melting furnace for melting.

[0058] The smelting conditions are: the vacuum degree in the vacuum arc melting furnace during smelting is 8×10 -3 Below Pa, fill with 0.5Mpa high-purity argon, smelt for 1-2 minutes each time, and smelt for 3-4 times.

[0059] Step Three: Spray Casting

[0060] Put the master alloy obtained in step 2 into a vacuum induction metal melt rapid cooling solidifica...

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PUM

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Abstract

The invention relates to an oxygen-metal battery based passive metal electrode. The metal for the electrode is added with a passivating element, and is rapidly solidified so as to cast the metal electrode to obtain the passive metal electrode. The passive metal electrode can be used in high power oxygen-metal batteries, lowers self-corrosion rate, and lowers self-corrosion losses.

Description

technical field [0001] The invention relates to a novel metal electrode based on an oxygen-metal battery, specifically adding other elements so that the metal is in a relatively passivated state. 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 form meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38H01M4/46H01M12/06
CPCH01M4/38H01M4/463H01M12/06Y02E60/10
Inventor 张涛徐洪杰
Owner BEIHANG UNIV
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