Lithium ion battery

Abstract

The invention provides a lithium ion battery which comprises a shell body. The shell body comprises the following parts: at least one set of anode layers and cathode layers; a diaphragm layer which forms connection between the anode layer and the cathode layer; electrolyte, wherein electrolyte LiCLO4 concentration is 1.5 mol / L, volume ratio of a propylene carbonate solvent and a glycol dimethyl ether solvent is 8:1. Porous permeable layers are provided between the anode layer or the cathode layer and the diaphragm layer. The lithium ion battery has the advantages of simple technology, leakage prevention, simultaneously, a utilization rate of an electrode material is raised, combination degree between a active material and a metal conductive material is raised, and electrical conductivity and mechanical reliability of electrode compound materials of the invention are substantially raised.

Description

Technical field [0001] The present invention relates to the field of a lithium ion battery, in particular to its structure. Background technique [0002] In the prior art, the structure of a lithium ion battery includes at least a set of positive electrode layer and negative electrode layer, and the positive electrode layer and the negative electrode layer are connected by a separator layer. The manufacturing process of the electrode composite material of the positive and negative electrode layers is: the electrode material is coated on the metal diaphragm through a binder and formed. The disadvantages of this process are: (1) Due to the use of adhesives in the coating process, a large amount of electrode material is lost, which cannot be fully utilized, and high-density composite materials cannot be obtained; (2) At the same time, active materials and metal conductive films The bonding surface between the sheets is relatively weak, the mechanical reliability is reduced, the two...

AI Technical Summary

Problems solved by technology

The disadvantages of this process are: (1) Due to the use of adhesives in the coating process, a large amount of electrode material is lost and cannot be fully utilized, and high-density composite materials cannot be obtained; (2) Active materials and metal conductive films are simultaneously The bonding surface between the sheets is relatively weak, the mechanical reliability is reduced, the two are easy to separate, and the bending curvature of the electrode composite material is limited

[0005] In view of the above defects, the improvement of the existing technology is to use a relatively dilute electrolyte to promote electrical conductivity, but due to its incomplete mechanical properties, liquid leakage is prone to occur, and this consequence has caused huge damage to the battery itself

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