Carboxymethyl Cellulose (CMC)

Carboxymethyl cellulose (CMC) is a water-soluble polymer derived from cellulose. Through chemical modification, hydroxyl groups in cellulose are converted into carboxymethyl groups (-CH₂COOH), which provides CMC with unique properties. It has found extensive application as a battery binder, especially for lithium-ion battery anodes. Alfa Chemistry offers high-quality CMC. Please contact us for pricing and more information on this product.

Product Name: Carboxymethyl Cellulose (CMC)

CAS Number: 9000-11-7

Basic Parameters

Items	Carboxymethyl Cellulose (CMC)
Catalog	ACSEM-BM-B003
Purity	≥99.5%
Appearance	White powder
Viscosity	7000-10000 mPa·s
Water Content	≤10%
Substituting Degree	0.6-0.9
pH	6.0-8.5
Pb	≤15 ppm
Fe	≤40 ppm
As	≤2 ppm

Note: The specifications of the product can be adjusted according to your requirements.

Properties

CMC provides many useful properties as a binder in battery technology, including:

Water solubility. CMC dissolves easily in water, which simplifies mixing with other battery components during the manufacturing process.
Viscosity modifying properties. CMC can modify the viscosity of the slurry used in electrode fabrication, making it easier to coat onto the current collectors.
Adhesion. CMC offers excellent adhesion properties, helping to bind the active material particles together and to the current collector.
Electrochemical stability. CMC is electrochemically inert, meaning it doesn't interfere with the battery's electrochemical reactions.
Eco-friendly and cost-effective. As a cellulose derivative, CMC is both environmentally friendly and cost-effective, making it a preferred choice over many synthetic binders.

Application Note

The CMC binder is thoroughly mixed with the active material, where ratio can range from 30:70 to 1:99, respectively, depending on application, active material, additives, etc. If necessary, the mixture can be diluted with water to achieve required viscosity. The resulting slurry is coated on current collector (e.g. doctor blade) and dried (usually at 80 °C) in vacuum or ambient environment.

Empower your energy solutions with our superior CMC battery binder –– the ultimate choice for durability and performance.

Carboxymethyl Cellulose (CMC)

Basic Parameters

Properties

Application Note

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