Battery Grade CMC

Description:

The FR-BAT-CMC series products are high purity, specially modified anionic cellulose ethers manufactured by Jining Fortune Biotech Co., Ltd. using advanced processes and strict quality control. Specifically designed for the anode slurry system of lithium-ion batteries, this product serves as a key thickener and binder in the slurry.

Boasting outstanding purity, uniform degree of substitution, and excellent rheological properties, FR-BAT-CMC ensures long-term stability of anode slurries – especially those based on artificial graphite, natural graphite, and silicon-based anode material systems. Furthermore, it significantly enhances the overall electrochemical performance of batteries and the reliability of production processes.

Characteristics:

Ultra-High Purity: The product purity reaches over 99.8%, with strictly controlled contents of metal ions (such as iron, copper, and sodium) and chloride ions. The extremely low impurity level can effectively inhibit side reactions inside the battery and reduce the self-discharge rate, thereby ensuring high safety and long cycle life of the battery. It has an extremely low content of insoluble substances, enabling excellent slurry sieving performance and preventing defects like scratches and dark spots during coating.

Excellent Solubility and Rheology: It can dissolve quickly and completely in deionized water to form a clear and transparent gel solution without particle agglomeration, shortening the slurry preparation time.

Outstanding Shear-Thinning Property: The viscosity decreases under high shear conditions (stirring, coating), facilitating dispersion and flow; while the viscosity recovers during standing, which effectively prevents the sedimentation of active materials such as graphite.

Uniform Degree of Substitution: Through advanced production processes, we ensure highly uniform distribution of carboxymethyl groups on the CMC molecular chain. The uniform degree of substitution guarantees rapid and complete dissolution of the product in aqueous solution, with no insoluble substances or gel particles. This forms a stable and homogeneous slurry system, avoiding blockages and defects during the coating process.

Superior Bonding and Dispersion Capability: The carboxyl and hydroxyl functional groups on the CMC molecular chain can form strong hydrogen bonds with the surface of anode materials such as graphite and silicon, achieving excellent particle dispersion and bonding. This is particularly important for addressing the significant volume change of silicon-based anodes during charge-discharge cycles, as it can effectively maintain the structural integrity of the electrode.

Good Compatibility: It exhibits excellent chemical compatibility with commonly used materials such as graphite, silicon-carbon anode materials, conductive agents (e.g., Super P, CNTs), and SBR.

Environmental Friendliness: As a key component of the aqueous binder system, this product uses water as a solvent, completely replacing the toxic and expensive NMP solvent required by traditional oil-based binders (PVDF). This greatly reduces production costs and environmental impact, in line with the global trend of green manufacturing.

Recommended Model:

FR-BAT200, FR-BAT1000, FR-BAT3500