High-voltage sodium-carbon fluoride secondary battery

A secondary battery, carbon fluoride technology, applied in the direction of secondary batteries, battery electrodes, electrochemical generators, etc., can solve the problems of unstable discharge platform, poor cycle performance, low discharge voltage, etc., and achieve good cycle stability , large discharge capacity and high discharge potential
CN104577196AActive Publication Date: 2015-04-29XIAMEN UNIV
4 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2015-04-29

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a high-voltage sodium-carbon fluoride secondary battery and relates to a secondary battery. The high-voltage sodium-carbon fluoride secondary battery is provided with a positive electrode, a negative electrode, a diaphragm and electrolyte, wherein a carbon fluoride material serves as a positive active material of the positive electrode; a sodium metal negative electrode or a sodium alloy negative electrode serves as the negative electrode; the electrolyte consists of a solvent, electrolyte and an additive; the solvent refers to an organic solution; the electrolyte refers to a sodium salt; and the diaphragm adopts a PP diaphragm, a PE diaphragm, a PP / PE / PP composite film or a glass fiber diaphragm. The fluorinated acetylene black, fluorinated carbon fibers, graphite fluoride microspheres and other materials which are prepared by a high-temperature gas phase chemistry fluorination method, and the secondary battery is high in specific capacity and has high energy density, high reversible capacity, high cycle stability and high rate performance. Moreover, the secondary battery has the advantages of high discharge capacity, high discharge potential, stable discharge potential, certain reversible capacity and the like, can use a water-based adhesive and is environmentally friendly.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a secondary battery, in particular to a high-voltage sodium-carbon fluoride secondary battery with a novel carbon fluoride material in a multilayer structure as the positive electrode. Background technique

[0002] Fluorinated carbon is currently widely used as a cathode material for lithium primary batteries. It has the advantages of high energy density, low self-discharge rate, long storage life and safety, and is widely used in military, aerospace, medical and other fields.

[0003] At present, the chemical energy storage technology industry represented by lithium-ion batteries is facing two bottlenecks: performance and price. On the one hand, intercalation-extraction materials represented by lithium cobaltate are approaching the limit of their theoretical capacity, and their performance is increasingly difficult to meet the needs of human daily life, especially small electronic equipment; on the other hand, the cost of lith...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More