CATHODE OF LITHIUM CHEMICAL CURRENT SOURCE Russian patent published in 2008 - IPC H01M4/58 H01M6/16 

FIELD: electricity.

SUBSTANCE: invention is attributed to the field of electric engineering, specifically to cathodes of lithium chemical current sources (LCCS). According to the invention LCCS cathode contains titan current tap, two electrodes with active mass on the basis of fluorinated hydrocarbon applied onto opposite sides of current tap, and multilayer separator the inner layer of which is made of nonwoven polypropylene at that current tap is made of perforated titan foil 0.03÷0.06 mm in thickness with perforation total area of 0.4÷0.6 of electrode area, the separator additionally contains porous polypropylene film covered from both sides with porous polyethlene film, and glass fabric layer adjoining the inner layer of nonwoven polypropylene separator. Before applying the electrodes current tap surface can be treated by chemical etching or by chemical etching with applying the coatings of colloidal graphite solution or of compound on the basis of glycan or of titan carbide and/or nitride. Active electrode mass is applied on current tap via dry thermal pressing technique at temperature of 150 to 170 °C, pressure of 80÷480 kg/cm² and time of 25÷60 s. Active electrode mass contains (wt %): fluorocarbon - 80÷90%, fluoroplastic emulsion as binding substance - 2÷5% and carbon black and/or colloidal-graphite preparation as electroconductive additive - the rest.

EFFECT: obtaining of lithium chemical current sources cathodes with improved technical characteristics.

4 cl, 3 dwg, 1 ex