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Battery binder CMC materials

Battery binder CMC materials

The binder is an inactive component in the electrode sheet of the lithium ion battery, and its main function is to connect the electrode active material, the conductive agent and the electrode current collector, so as to have an overall connectivity between the electrode active material, the conductive agent and the current collector, thereby reducing The impedance of the small electrode.

 CMC specification-----C3000

 

 

item

unit

Min. value

Max. value

Test method

Purity(in dry condition)

 %

99.5

 

CE-55.4

arsenic

ppm

 

0.2

CE-93.1

Heavy metal content

ppm

 

10.0

CE-93.1

Lead content

ppm

 

2.0

CE-93.1

Mercury content

ppm

 

1.0

CE-93.1

Water content(in bag)

%

 

8.0

CE-7.1

Sodium carboxy acetic acid

%

 

0.40

CE-50.1

PH(1% water solution)

%

6.5

8.0

CE-8.1

Plate test

CFU/g

 

1000

CE-92.1

Sodium chloride content

%

 

0.40

CE-15.5

Na content

%

6.5

9.5

CE-59.5

replacement

 

0.65

0.85

CE-28.4

sulfate

%

20.0

33.3

CE-66.1

Total salt content(in dry condition)

%

 

0.50

CE-15.4

Viscosity(25,in dry condition, 1% water solution)

mPa.s

3000

4000

CE-5.15

Viscosity(viscometer : LVT, #4rotor, speed 30rpm)

mPa.s

3000

4000

CE-5.15