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Cekol^® CMC optimizes the performance of aqueous binder systems in lithium-ion batteries

Cekol^® sodium carboxymethyl cellulose (CMC) are specifically suited for aqueous binder systems in lithium-ion battery anodes which are typically used in combination with graphite and styrene butadiene rubber (SBR) in anode coating to improve the binding strength of active graphite on the copper collector.

SBR alone cannot generate sufficient coating rheology and slurry stability for graphite powder. Therefore, applying Cekol^® CMCs will provide excellent dispersion of graphite particles and homogenous distribution of the binder. Secondary lithium-ion batteries made using our carboxymethyl cellulose show high capacity retention in general, but also at high charge/discharge rates (C-rates).

Levasil^® GB – colloidal silica for lead-acid batteries

Levasil^® colloidal silica is an extremely cost-efficient and easy-to-use option for gelling sulfuric acid to obtain a solid electrolyte (gel cell) in valve-regulated, lead-acid (VRLA) batteries and for reducing the acid stratification in absorbed glass mat (AGM) batteries.

Gelling is the process by which a liquid becomes viscous and eventually a solid. With our Levasil^® GB product portfolio we can offer consistent quality together with low levels of impurities and chlorides. Vital for high performance batteries that last longer.

Ketjenblack^® - electroconductive carbon black specifically used for batteries and fuel cells

Our Ketjenblack^® electroconductive blacks are used in a wide range of applications like conductive flooring, medium and high-voltage cables, and electrostatic paintable plastics including automotive parts

Featured products

Cellulose ethers

Cekol

The innovative Cekol® sodium carboxymethyl cellulose (CMC) is a bio-based and biodegradable hydrocolloid, making it a preferred sustainable choice. The grades and functionality of the CMC can be tailored for specific uses such as for battery, pharmaceutical, food, and personal care applications. Cekol® CMC is a water-soluble polymer derived from wood or cotton cellulose and produced to a minimum of 99.5% purity. The product hydrates and dissolves readily in hot and cold water and, as it is manufactured from wood cellulose, it fulfills GMO-free requirements. By choosing the right type of Cekol® CMC, formulators can achieve the desired rheology for any aqueous system, including suspensions and emulsions. In addition to controlling the rheology, Cekol® CMC is known for its excellent water retaining and film forming capacity.

Levasil colloidal silica

Levasil GB1000

Levasil® GB1000 is an alkaline, aqueous dispersion of colloidal silica that is approximately 30% solids by weight. The product is sodium stabilized and the amorphous silica particles carry a negative surface charge. The silica particles are discrete, have a slightly uneven, spherical shape, and are present in a narrow particle size distribution. The physical appearance of the dispersion is a translucent liquid, slightly more viscous than water. Levasil® GB1000 is produced for world-wide distribution.

Levasil colloidal silica

Levasil GB3000

Levasil® GB3000 is an alkaline, aqueous dispersion of colloidal silica that is approximately 15% solids by weight. The silica dispersion is sodium stabilized and the amorphous silica particles carry a negative surface charge. The silica particles are structured to enhance the activity of the dispersion. The physical appearance of the dispersion is a clear liquid, slightly more viscous than water. Levasil® GB3000 is produced for world-wide distribution.

Polymer additives