Battery Grade CMC

Compared with other CMC slurry, the stability of slurry was significantly improved, and the stability of continuous observation for 72h was very small.

Classification:

Battery level

Key words:

CMC & CMS

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Product Details

The role of CMC in batteries

Improve the stability and fluidity of water-insoluble materials dispersed in solution;

2, the negative active material and conductive agent to play a dispersing role;

3. Bonding protection of active substances;

4, to prevent the precipitation of active substances;

5. Stabilize the processing performance of the electrode and improve the battery charge and discharge performance;

6. Stabilize the pole piece structure and improve the peeling strength of the pole piece.

CMC Product Features

1, improve the slurry settlement, compared with other CMC slurry stability improved significantly, continuous observation 72h static test, the stability change is very small.

2. The penetration rate is good, Sentai CMC impurity particles are less, and insoluble substances are almost eliminated after dissolution.

3. Solve the cracking of the pole piece. Compared with other CMC, Sentai CMC pole piece has better softness and can solve the cracking problem well.

4, reduce the surface defects of the pole piece, the strict control of the solid insoluble matter, can solve the pole piece defects caused by CMC.

5. The addition amount is low, and the addition amount range is 0.8-1.5%. Users can choose different models according to the dispersion effect.

6. The product has good compatibility and can be used in conjunction with SBR, PAA and other materials.

Model parameters

Model	ST-1	ST-2	ST-3	ST-4	ST-5	ST-Extra high viscosity
1% aqueous solution viscosity (mpa.s)	20-800	800-1500	1500-2000	2000-2600	2600-3500	≥ 5000
Degree of Substitution (D.S)	0.8-1.0	0.8-1.0	0.8-1.0	0.8-1.0	0.8-1.0	0.7-0.9
PH value	6.0-8.5
Purity (%)	≥ 99.5
Drying loss (%)	≤ 10.0
Gel particles (/4cm ²)	≤ 3	≤ 3	≤5	≤5	≤5	≤5
fiber	A	A	A	A	B	B
Insoluble matter	A	A	A	A	B	B
Particle size (um)	200 mesh ≥ 85%
Chloride (in Nack) w/%	≤ 0.50%

Description:Indicators of "fiber" and "insoluble matter": A is a very small amount, B is a small amount, and C is a large amount.

Characteristics Comparison of Several "Battery Grade" CMC

Product Model	Viscosity (mpa.s)	PH	Substitution D.S.	chloride ion Cl	Water (%)	500ml vacuum filtration 400ObjectiveWhenBetween (S)	Gel Particles (/4cm2)	fiber	Insoluble matter Content 90 ℃ Time measurement (%)
A foreign factory 1	1600	6.66	0.70	0.40	7.00	12.8	7	C	0.13
A foreign factory 2	1548	7.20	0.98	0.51	5.93	9.4	3	C	0.56
A foreign factory 3	1572	7.14	0.91	0.46	5.87	6.6	4	C	0.32
A factory abroad 4	2292	7.10	0.88	0.30	7.10	9.1	6	C	0.53
Domestic factory 1	270	6.85	0.96	1.52	12.87	Can't move	24	C	0.48
Domestic factory 2	1392	7.05	0.97	0.56	6.69	8.2	3	C	0.34
Sentai ST3	1572	7.10	0.98	0.48	7.07	12.8	7	C	0.13
Sentai ST4	2360	7.52	0.98	0.50	7.09	6.1	3	C	0.15