The invention discloses a preparation method of a
lithium thionyl chloride power type battery positive
electrode. The preparation method comprises the steps of 1) performing
powder material pretreatment; performing material mixing to form a half-dried wet material and performing uniform stirring; putting the half-dried wet material into a banded extruder with the sieving
pore diameter of 0.5-1.5mmto be subjected to band
extrusion to obtain a strip-shaped material with the length of 1-2cm; putting the strip-shaped material into a centrifuging
pelletizing machine to obtain a fine pellet material with the grain
diameter of 0.5-1.5mm; and performing
vacuum drying on the fine pellet material for 8-10h; 2) putting the fine pellet material on a net: performing smashing on the obtained dried finepellet material into a
fine powder material; performing uniform mixing on the
fine powder material and an aqueous
solvent to obtain a half-dried
powder material; and putting the half-dried
powder material on a
nickel net to be subjected to
vacuum drying and fibering; and 3) positive
electrode forming: performing rolling by adopting a
rolling mill to prepare a positive
electrode body with requiredthickness. By
processing the wet material through the extruder and the
pelletizing machine, the formula materials in the finally prepared positive electrode are more uniform in distribution, and higher structural strength, more developed net-hole structure, no powder falling-off, and more environment friendly and
safer production process are achieved, and
continuous production operation can be realized.