An all-solid-state iron-air battery

An all-solid-state, solid-state electrolyte technology, applied in battery electrodes, circuits, electrolytes, etc., can solve problems such as battery leakage and negative electrode activity, and achieve the effects of reducing battery leakage behavior, improving performance, and good oxygen ion conductivity

Active Publication Date: 2021-12-03
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low negative electrode activity and battery leakage in the prior art, the present invention provides an all-solid-state iron-air battery

Method used

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  • An all-solid-state iron-air battery
  • An all-solid-state iron-air battery
  • An all-solid-state iron-air battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Negative electrode 1 is potassium-doped iron oxide + YSZ (1:1), separator 2 is ZrO 2 , the solid electrolyte 3 is GDC, the positive electrode 4 is Ag, and the lead 5 is Ag.

[0028]ZrO was deposited by ion sputtering 2 deposited on the surface of the GDC sheet, and then the negative electrode was coated on ZrO 2 On the other side of the GDC, apply silver paste on the other side of the GDC, and finally lead out the wires with silver wires, and paste the silver wires with silver paste. After the silver paste is solidified, put the battery into an electric furnace at 600°C to keep the temperature constant, and conduct a charge-discharge test. During the test, the working electrodes of the China Landian battery test system are connected to the positive and negative electrodes of the battery respectively, the charging current is set to 10mA, the charging time is 30min, the discharging current is 10mA, and the discharge termination voltage is 0.3V. discharge curve.

[002...

Embodiment 2

[0031] Negative electrode 1 is sodium-doped iron oxide + ZrO 2 (1:1), diaphragm 2 is ZrO 2 , the solid electrolyte 3 is LSGM, the positive electrode 4 is Ag, and the lead 5 is Ag.

[0032] ZrO was deposited by atomic layer deposition 2 deposited on the surface of the LSGM sheet, and then the negative electrode was coated on ZrO 2 On the other side of the LSGM, apply Ag paste on the other side of the LSGM, and finally lead out the wires with silver wires, and paste the silver wires with silver paste. After the silver paste is solidified, put the battery into an electric furnace at 750°C to keep the temperature constant, and conduct a charge and discharge test. During the test, the working electrodes of the China Landian battery test system are connected to the positive and negative electrodes of the battery respectively, the charging current is set to 10mA, the charging time is 30min, the discharging current is 10mA, and the discharge termination voltage is 0.3V. discharge ...

Embodiment 3

[0035] The negative electrode 1 is lithium-doped iron oxide + YSZ (2:1), and the separator 2 is ZrO 2 , the solid electrolyte 3 is YSZ, the positive electrode 4 is Ag, and the lead 5 is Ag.

[0036] ZrO was deposited by atomic layer deposition 2 Deposit on the surface of YSZ sheet, and then coat the negative electrode on ZrO 2 On the other side of the YSZ, apply Ag paste on the other side of the YSZ, and finally lead out the wires with silver wires, and paste the silver wires with silver paste. After the silver paste is solidified, put the battery into an electric furnace at 850°C to keep the temperature constant, and conduct a charge-discharge test. During the test, the working electrodes of the China Landian battery test system are connected to the positive and negative electrodes of the battery respectively, the charging current is set to 10mA, the charging time is 30min, the discharging current is 10mA, and the discharge termination voltage is 0.3V. discharge curve.

...

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Abstract

The invention relates to an all-solid iron-air battery, which includes a positive electrode, a negative electrode, a separator and a solid electrolyte, wherein the positive electrode and the negative electrode are respectively arranged on opposite sides of the solid electrolyte, and the separator is arranged between the negative electrode and the solid electrolyte to form a sandwich structure , the negative electrode is a ferrite material formed by alkali metal-doped iron oxide, the positive electrode is a metal or metal oxide material with high-efficiency redox catalytic activity, the solid electrolyte is an electrolyte material that can efficiently conduct oxygen ions, and the diaphragm is a thin film or Sheet-shaped material with oxygen ion conductivity and electronic insulation. According to the all-solid-state iron-air battery of the present invention, the negative electrode is doped into the iron oxide lattice by alkali metal, which can significantly improve the electrochemical reactivity of the iron electrode, improve the potential safety hazard caused by battery overcharging, and further significantly improve the iron-air battery. The performance of the battery, the separator is arranged between the solid electrolyte and the negative electrode, which can effectively alleviate the problem of battery leakage.

Description

technical field [0001] The invention relates to an iron-air battery, and more particularly relates to an all-solid iron-air battery. Background technique [0002] Metal-air battery is an energy storage technology that utilizes the redox process of metals to charge and discharge batteries. Its capacity is much higher than that of conventional battery energy storage technologies, and it is especially suitable for large-scale power grid energy storage. Iron is the fourth most abundant element in the earth's crust. It has abundant reserves, multiple stable oxidation states, low cost, and easy oxidation. It is a potential metal electrode material. The theoretical energy density of iron-air batteries is 2000Wh / kg, which is sufficient for a range of energy storage applications. [0003] High temperature conditions can significantly increase the electrochemical reaction rate, utilize the energy generated by the redox reaction of active materials as much as possible, and effectively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/90H01M12/06
CPCH01M4/86H01M4/9016H01M12/06H01M2004/8684H01M2300/0074Y02E60/10H01M50/431H01M2004/8689H01M2004/028H01M12/08H01M4/136H01M2300/0077H01M4/131H01M4/9033H01M10/0562H01M2004/027
Inventor 王建强彭程张诗雨程李威杨云关成志肖国萍
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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