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High-magnification and long-service-life rechargeable room-temperature sodium battery and preparation method thereof

A long-life, high-rate technology, applied in secondary battery manufacturing, secondary batteries, battery electrodes, etc., to achieve convenient preparation, superior battery performance, and good rate performance

Active Publication Date: 2015-03-04
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, iron disulfide microspheres with micro-nano structure have been prepared through simple synthesis methods, and suitable electrolytes are selected to effectively control the charge and discharge voltage range, so as to obtain high-rate, long-cycle iron disulfide-based microspheres. Rechargeable sodium batteries with cathode materials have not been reported yet

Method used

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  • High-magnification and long-service-life rechargeable room-temperature sodium battery and preparation method thereof
  • High-magnification and long-service-life rechargeable room-temperature sodium battery and preparation method thereof
  • High-magnification and long-service-life rechargeable room-temperature sodium battery and preparation method thereof

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Embodiment 1

[0029] A high-rate and long-life rechargeable room-temperature sodium battery, consisting of a positive electrode case 1, shrapnel 2, gasket 3, current collector 4, active material 5, diaphragm 6, sodium sheet 7, negative electrode case 8 and insulating sealing ring 9 Laminated structure, wherein the current collector 5 carrying the active material 4 is the positive electrode sheet, the sodium sheet 7 is the negative electrode sheet, the separator 6 is an insulator and soaked in the electrolyte, and an insulating layer 9 is provided between the positive electrode case 1 and the negative electrode case 2 .

[0030]In this embodiment, the positive electrode shell and the negative electrode shell are 304 stainless steel shells; the shrapnel and the gasket are 304 stainless steel sheets; the current collector is a copper sheet; the active material is iron disulfide microspheres; the diaphragm is made of polyethylene, polypropylene and polyethylene. The three-layer film or glass fib...

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Abstract

The invention discloses a preparation method of a high-magnification and long-service-life rechargeable room-temperature sodium battery. A ferrous disulfide microsphere is used as a cathode material, a sodium sheet is used as an anode, a diaphragm is a three-layer membrane formed by polyethylene, polypropylene and polyethylene, or glass fiber paper, an electrolyte is an ether type electrolyte containing a sodium salt; a conductive agent used by coating a cathode plate is formed from one or more of acetylene black, Super P, KS-6, a carbon nano tube, graphene, petroleum coke and the like; a binder is polyvinylidene fluoride or sodium carboxymethylcellulose; a solvent is N-methyl pyrrolidone or water; a current collector is foamed nickel, a copper sheet, foamed copper or an aluminum sheet. The preparation method has the advantages that the ferrous disulfide microsphere is simply and conveniently prepared, and the purity is high. Meanwhile, due to a morphologic advantage of a micro-nanometer structure, the high-magnification and long-service-life rechargeable room-temperature sodium battery is relatively high in specific capacity and cyclic stability and excellent in magnification performance. Therefore, a ferrous / sodium disulfide secondary battery is expected to be in commercialized production, and becomes the next-generation large-scale energy storage battery.

Description

technical field [0001] The invention relates to a new energy sodium battery, in particular to a high-rate and long-life rechargeable room-temperature sodium battery and a preparation method thereof. Background technique [0002] With the rapid development of today's science and technology, people's dependence on energy is increasing day by day. However, due to the limited reserves of traditional energy and the serious pollution problems in the process of mining and utilization, the development of new energy and the search for suitable Equipment for energy storage and conversion is imminent. In the past 20 years, lithium-ion batteries have been widely favored by people for their advantages of portability, environmental protection, high specific energy, and long life. However, with the large-scale mining of lithium ore, the limited lithium resources are difficult to meet long-term utilization. Due to the abundant reserves of sodium in the sea, it provides a premise guarante...

Claims

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Application Information

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IPC IPC(8): H01M10/36H01M10/04
CPCB82Y30/00H01M4/5815H01M10/054Y02E60/10Y02P70/50
Inventor 陈军轷喆程方益陶占良梁静李海霞
Owner NANKAI UNIV
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