Flexible liquid metal air battery and battery pack

Abstract

The invention discloses a flexible liquid metal air battery and a battery pack, and relates to the technical fields of metal air batteries. The battery comprises a liquid metal electrode, a porous film, an electrolyte, an air electrode and a flexible shell, wherein the liquid metal electrode, the porous film, the electrolyte and the air electrode all are arranged in the flexible shell; the liquid metal electrode is located in a cavity formed by the porous film and the flexible shell and is used for being in contact with the electrolyte through holes in the porous film for oxidizing reaction; the electrolyte is arranged between the liquid metal electrode and the air electrode and is used for providing an ionic environment for electrochemical reaction; and the air electrode is provided for providing an oxidant in the electrochemical reaction. With the liquid metal electrode as an anode of the battery, so that the flexible liquid metal air battery is in a liquid state at a room temperature; and a flexible design is achieved, so that the flexible liquid metal air battery can be conveniently applied to the occasions of a wearable technology and the like, and is simple in structure, stable and efficient.

Description

technical field [0001] The invention relates to the technical field of metal-air batteries, in particular to a flexible liquid metal-air battery and a battery pack. Background technique [0002] Metal-air battery, also known as metal fuel cell (MetalFuelCell, MFC), is a new type of fuel cell formed by replacing hydrogen or hydrogen-rich fuel in fuel cells with active solid metals. The principle is that the metal is provided to the anode of the battery like hydrogen fuel, and an electrochemical reaction occurs with the oxidant provided to the cathode, thereby converting the chemical energy of the metal into electrical energy. Compared with traditional internal combustion engines and ordinary batteries, metal-air batteries have greater energy density and higher energy efficiency, are non-toxic, non-polluting, extremely safe for fuel storage, simple in structure, low in cost, and only need to replenish metal when charging Fuel is a power source with great development and appli...

AI Technical Summary

Problems solved by technology

However, the alkaline solution is highly corrosive and will intensify the hydrogen evolution corrosion of the aluminum electrode, so it is necessary to add a corrosion inhibitor to the electrolyte

In addition, the anode in the current metal-air battery is an active metal consumption electrode. When the battery is charged, the charging method of replacing the metal electrode is used, which is called a mechanical rechargeable battery. The battery structure is complex and inconvenient to operate.

[0005] In summary, metal aluminum-air batteries have problems such as hydrogen evolution corrosion of aluminum electrodes, surface oxidation passivation, and difficulty in recharging, which restrict their further development.

Moreover, almost all metal-air batteries to date have used solid metal electrodes, so the battery operates in a rigid state, which is inconvenient for some applications

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