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Composite sodium-storage positive electrode for solid-state secondary sodium battery and preparation method for composite sodium-storage positive electrode

A composite sodium storage and solid-state technology, applied in secondary batteries, battery electrodes, circuits, etc., can solve problems such as potential safety hazards

Active Publication Date: 2016-04-13
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the solid-state sodium-ion battery prepared by the above work solves the traditional organic electrolyte leakage problem, high temperature operation also brings safety hazards

Method used

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  • Composite sodium-storage positive electrode for solid-state secondary sodium battery and preparation method for composite sodium-storage positive electrode
  • Composite sodium-storage positive electrode for solid-state secondary sodium battery and preparation method for composite sodium-storage positive electrode
  • Composite sodium-storage positive electrode for solid-state secondary sodium battery and preparation method for composite sodium-storage positive electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 0.3gNaMnO 2 , 0.3gNaPF 6 Solution, 0.3g acetylene black, 0.1g PVDF-HFP were uniformly mixed in 10g acetone solution, and stirred continuously at 50°C for 4 hours to obtain a uniform sol-state liquid;

[0031] The homogeneous sol-state liquid in (1) is evenly coated on the β”-Al by screen printing. 2 o 3 On the surface of the electrolyte, the thickness of the electrolyte is 170 microns, and after drying, a solid-state composite sodium storage positive electrode layer in close contact with the electrolyte is obtained, with a thickness of 60 microns;

[0032] A metal sodium sheet was pressed on the other side of the sodium ion-conducting ceramic electrolyte layer to a thickness of 70 μm. Encapsulate the solid-state battery in a button battery to obtain a high-specific-energy solid-state secondary sodium battery that operates at room temperature;

[0033] figure 1 The scanning electron micrograph of the interface between the solid-state composite sodium-storage positiv...

Embodiment 2

[0035] 0.3gNaTi 2 (PO 4 ) 3 , 0.3gNaClO 4 Solution, 0.3g acetylene black, 0.1g PVDF-HFP were uniformly mixed in 10g acetone solution, and stirred continuously at 50°C for 4 hours to obtain a uniform sol-state liquid;

[0036] The homogeneous sol-state liquid in (1) is evenly coated on the β”-Al by screen printing. 2 o 3 On the surface of the electrolyte, after drying, a solid-state composite sodium storage positive electrode layer in close contact with the electrolyte is obtained, with a thickness of 52 microns;

[0037] A metal sodium sheet was pressed on the other side of the sodium ion-conducting ceramic electrolyte layer to a thickness of 70 μm. Encapsulate the solid-state battery in a button battery to obtain a high-specific-energy solid-state secondary sodium battery that operates at room temperature;

[0038] figure 2 The capacity-cycle curve of the room-temperature operating solid-state secondary sodium battery prepared for Example 2 of the present invention du...

Embodiment 3

[0040] 0.85gNaTi 2 (PO 4 ) 3 , 0.05gNaClO 4 Solution, 0.05g acetylene black, 0.05g PVDF were uniformly mixed in 10g acetone solution, and stirred continuously at 50°C for 12h to obtain a uniform sol-state liquid;

[0041] The homogeneous sol-state liquid in (1) is evenly coated on the β”-Al by screen printing. 2 o 3 On the surface of the electrolyte, after drying, a solid-state composite sodium storage positive electrode layer in close contact with the electrolyte is obtained, with a thickness of 83 microns;

[0042] A metal sodium sheet was pressed on the other side of the sodium ion-conducting ceramic electrolyte layer to a thickness of 70 μm. Encapsulate the solid-state battery in a button battery to obtain a high-specific-energy solid-state secondary sodium battery operating at room temperature.

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Abstract

The invention relates to a composite sodium-storage positive electrode for a solid-state secondary sodium battery and a preparation method for the composite sodium-storage positive electrode. The composite sodium-storage positive electrode comprises an electrode active substance selected from any one kind of sodium manganate and sodium-titanium phosphate, and a sodium ion conductor selected from any one kind of sodium perchlorate and sodium hexafiuorophosphate. The preparation method is simple in preparation process and low in cost; and the prepared solid-state secondary sodium battery operating at the room temperature is high in energy density and high in safety.

Description

technical field [0001] The invention discloses a composite sodium-storage positive electrode for a solid-state secondary sodium battery and a preparation method thereof, and a high-specific-energy solid-state secondary sodium battery capable of operating at room temperature prepared by using the composite sodium-storage positive electrode and a preparation method thereof, specifically relating to The invention discloses a solid sodium secondary battery operating at room temperature, which is composed of a sodium metal negative electrode, a sodium ion conductive ceramic electrolyte and a solid composite sodium storage positive electrode, and belongs to the field of solid state battery preparation. Background technique [0002] At present, lithium-ion batteries are widely used in portable electronic devices and large-scale energy storage power stations. However, lithium is expensive and has a small content in the earth's crust. As it is gradually used in electric vehicles, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M4/58H01M4/62H01M4/36H01M10/054H01M10/0562
CPCH01M4/362H01M4/505H01M4/5825H01M4/624H01M10/054H01M10/0562Y02E60/10
Inventor 刘宇赵宽夏骥贺诗阳张书明
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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