Portable high-efficiency aluminum-oxygen power battery and preparation method thereof

Abstract

The invention discloses a portable high-efficiency aluminum-oxygen power battery and a preparation method thereof. The method comprises the following steps of mixing a perovskite manganese oxide, MnO2, a conductive agent and polytetrafluoroethylene emulsion, dispersing and making the mixture to paste with water, coating the paste on two surfaces of a nickel net for drying, and preparing an oxygen catalytic electrode by repeated rolling; preparing an aluminum positive electrode plate by employing an aluminum-alloy metal sheet; mixing potassium hydroxide and cyclodextrin to prepare a colloid electrolyte, and rolling the colloid electrolyte to form a sheet shape; mixing ABS and PC to prepare a shell of the power battery; fixing the oxygen catalytic electrode and the aluminum positive electrode in an electrode reaction cavity of the shell, and arranging the sheet-shaped colloid electrolyte between the oxygen catalytic electrode and the aluminum positive electrode; and forming a battery path among the oxygen catalytic electrode, the aluminum positive electrode and the colloid electrolyte in the electrode reaction cavity after water is injected into the shell, wherein oxygen is slowly released from a solid-state oxygen sheet at an outer side of the oxygen catalytic electrode and is provided for oxidization-reduction reaction of the battery so as to complete the power generation process of the aluminum-oxygen battery.

Description

technical field [0001] The invention relates to the technical field of aluminum-air batteries, in particular to a portable high-efficiency aluminum-oxygen power battery and a manufacturing method thereof. Background technique [0002] At present, the disposable batteries used in the market have low energy density, unstable voltage, and short service life; with the continuous development of technology, the requirements for batteries are getting higher and higher. In recent years, with the rapid development of the drone market, now Some batteries can no longer meet the needs of the market, and aluminum-air batteries are a new type of high-energy chemical power source. This type of battery has high energy density, long discharge time, stable voltage, good safety performance, no pollution, and materials. It has many advantages such as wide source and light weight, so it has been widely used in various underwater power sources, portable power sources, and backup power sources. ...

AI Technical Summary

Problems solved by technology

However, the current aluminum-air batteries mainly use silver as the catalyst. Although the catalytic activity is high, the cost is also high and it is not suitable for large-scale production; and the electrolytes used are all corrosive liquids, which are not easy to carry and store; Aluminum anodes are prone to hydrogen evolution reactions in the electrolyte; oxygen-catalyzed electrodes usually absorb oxygen from the air, which limits their application range

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