Carboxymethyl Cellulose (CMC) Description
Carboxymethyl Cellulose (CMC) is a derivative of cellulose, which is a natural polymer found in plants. CMC is synthesized by treating cellulose with sodium hydroxide and monochloroacetic acid or its sodium salt. This chemical modification introduces carboxymethyl groups (-CH2-COOH) into the cellulose structure. It is widely used as a thickening agent and anti-precipitant for anode electrode preparation for commercial lithium-ion batteries.
Carboxymethyl Cellulose (CMC) Specification
Appearance
|
White to off-white powder
|
Purity (%)
|
>99
|
Moisture (%)
|
<10
|
Viscosity (mPa.s, 1% Solution 25℃)
|
1500~3000
|
Substitution
|
0.8~1.2
|
Melting Point
|
274℃
|
PH
|
6.0~8.5
|
Carboxymethyl Cellulose (CMC) Applications
Viscosity Control: Ensures the slurry has the right consistency for uniform and defect-free coating on the current collector.
Improved Coating Quality: Achieves smooth and even electrode layers.
Slurry Stabilization: Prevents precipitation of active materials and conductive additives, maintaining a homogeneous mixture.
Enhanced Homogeneity: Ensures uniform distribution of components in the slurry.
- Binder for Anode Materials:
Mechanical Integrity: Holds active materials and conductive agents together, enhancing adhesion and preventing delamination.
Crack Prevention: Maintains structural stability during charge and discharge cycles.
Carboxymethyl Cellulose (CMC) Packaging
Our Carboxymethyl Cellulose (CMC) is carefully handled during storage and transportation to preserve the quality of our product in its original condition.