Sodium-perfluorocarbon primary battery

A carbon fluoride and battery technology, applied in the field of sodium batteries, to achieve the effects of stable discharge potential, environmental friendliness, and high discharge capacity

Active Publication Date: 2014-04-02
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Sodium-perfluorocarbon primary battery
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Examples

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Effect test

Embodiment 1

[0024] The electrochemical performance test of the sodium-carbon fluoride primary battery of the present invention is carried out by using the prepared 2025 button-type sodium battery, and the positive carbon fluoride electrode is prepared by the paste coating method. The specific steps are: according to the mass ratio of carbon fluoride positive electrode material: acetylene black: binder = 80: 10: 10, the fluorinated carbon, acetylene black and binder are ball-milled and mixed, coated on the treated aluminum foil, at 120 ℃ drying, press molding under 20MPa. A positive electrode for a sodium battery was obtained.

Embodiment 2

[0026] The fluorinated carbon electrode prepared in Example 1 is used as the positive pole, the sodium metal is the negative pole, the PP / PE / PP composite film Cellgard2400 is the diaphragm, and 1mol / L NaClO 4 The propylene carbonate (PC) solution is used as the electrolyte, which is assembled into a 2025 button battery. The structure principle of sodium battery is as follows: figure 1 shown. The constant current electrochemical performance test was carried out on the LAND battery test system (Wuhan Landian Electronics Co., Ltd.). Discharge cut-off potential is 1.5V (vs.Na + / Na).

Embodiment 3

[0028] Using fluorinated carbon fiber (F / C=0.75) as the positive electrode active material, referring to Example 1, a positive electrode for a sodium battery was prepared. Referring to Example 2, the sodium battery preparation and electrochemical performance test were carried out. Test results such as figure 2 shown.

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Abstract

The invention discloses a sodium-perfluorocarbon primary battery and relates to a sodium battery. The sodium-perfluorocarbon primary battery is provided with a positive electrode, a negative electrode, a diaphragm and an electrolyte solution, wherein the positive electrode takes perfluorocarbon as an active substance; a main body of the perfluorocarbon is (CFx), and x is ranged from 0.2-1.2; the active substance comprises 20-100 percent of perfluorocarbon by mass; the electrolyte consists of a solvent, an electrolyte and an additive. The commercial perfluorocarbon, including carbon monofluoride, fluoride petroleum coke, fluoride carbon nano tube, fluoride carbon fibers, fluoride graphene and the like, is used as a main body active substance of the positive electrode of the sodium-perfluorocarbon primary battery; the sodium metal is used as the negative electrode; the electrolyte solution which takes an organic solution as the solvent and contains the sodium salt electrolyte and the diaphragm form a primary battery system which discharges at the constant current density of 20mA/g, and the mass specific capacity can be more than 800mAh/g. The sodium-perfluorocarbon primary battery has the characteristics of high discharging capacity, steady discharging level, environment friendliness and the like.

Description

technical field [0001] The invention relates to a sodium battery, in particular to a sodium-carbon fluoride primary battery with carbon fluoride as the positive electrode. Background technique [0002] With the rapid development of the domestic economy and the rapid growth of energy demand, energy issues have attracted increasing attention. For a long time, the shortage of traditional fossil energy and the emission of greenhouse gases have become one of the most important problems to be solved in the future development of human society. Electrochemical power supply has become one of the main ways to solve energy problems in today's society due to its unique performance and environmental friendliness. Therefore, the research and development of new batteries and key materials with high specific energy, high specific power, and high safety has become the consensus of all countries in the world. [0003] As the second lightest metal element after lithium, sodium metal has an a...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M4/06
CPCH01M4/381H01M4/5835H01M6/164H01M6/168
Inventor 杨勇岳红军张清顺常海涛甘健龙邵元骏
Owner XIAMEN UNIV
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