Positive pole in use for lithium cell, and preparation method

Abstract

The positive electrode of lithium cell includes two pieces of membrane positioned on two faces of nickel material. Characters are that membrane of positive electrode is prepared from raw materials of acetylene black, polytetrafluoroethylene and CuX2 mainly. Mass percent of each material is as: acetylene black 74.8-87.7, polytetrafluoroethylene 8.5-10, and CuX2 3.8-15.2; where X as F, Cl, Br or I. The invention can increase capacity and output power of lithium cell greatly.

Description

technical field

[0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a positive electrode for lithium batteries. Background technique

[0002] Lithium thionyl chloride batteries, lithium sulfur dioxide batteries and other lithium batteries with active metal lithium as the anode and TAB electrode (the electrode formed by mixing acetylene black and polytetrafluoroethylene in a certain proportion) as the cathode have high single voltage, It has the advantages of stable discharge voltage, wide working temperature range and low self-discharge rate. It is not only widely used in military fields such as radio communication equipment, missile ignition systems, cannon launch equipment, torpedoes, but also in civilian fields such as cardiac pacemakers, electronic watches, and smart instruments. As electronic products tend to be multi-functional and miniaturized, supporting batteries are required to develop in the direction of small si...