Microporous aluminum foil for battery application

Microporous aluminum foil structure

1. Full-face microporous aluminum foil: no rib and full-width rib

2. Rib microporous aluminum foil: According to the battery design, it can meet the requirements of the rib, and can be divided into the following three types: side rib on both sides, two sides + middle rib, multi-width rib

The technical requirements of the rib: in the rib series products, the micropore density of the rib part should be less than 10% of the effective hole-forming hole density.

Specification item	unit	Qualified value and range	Inspection cycle	Measured value
Aluminum foil series	%	1235/1070	roll by roll	Aluminum 99.9
Foil state		H16，H18
Product thickness	um	15	roll by roll	15
Product areal density	g/m2	40-45	roll by roll	42-43
Outlet method		Electrochemical exit
Hole shape		Through hole, burr free
Product width	mm	0-1000
Pore density		number	Aperture um	The area density is lower than that of the base material%
	Pieces/cm2	200-800	5-40	0.1-2.54
	Pieces/cm2	800-1500	5-40	0.2-3.96
	Pieces/cm2	1500-2000	5-40	0.3-4.95
	Pieces/cm2	2000-3000	5-40	0.3-6.5
Hole spacing	Um	60-100	80	80
Hole Consistency	%	80-90	roll by roll	85
Tensile strength	Mpa	100-260	roll by roll	160
Elongation	%	0.5～2.42	roll by roll	1.4
Resistivity	μΩ.cm	GB/T228.1-2010	roll by roll	2.85
wettability	Dyne value	40	roll by roll	40