Bondwell™ aqueous polymers

chemistry: cellulosics

Bondwell aqueous binder ensures effective anode slurry preparation and graphite binding

The Bondwell BVH8 carboxy methyl cellulose (CMC) aqueous binder also acts as a rheology modifier for good slurry stability. It is typically used in conjunction with styrene butadiene (SB) latex to improve the binding strength of the active graphite on the copper collector. SB alone cannot generate slurry stability for the graphite powder. Bondwell BVH8 CMC improves the rheology characteristics and allows sufficient coating of the copper foil at high speeds, ensuring the lithium ion cells survive multiple discharge cycles.

While Bondwell BVH8 CMC has good adhesion strength of synthetic graphite to the anode, it is optimized for even better adhesion strength of natural graphite to the anode for longer cell life.

In process, Bondwell BVH8 CMC also ensures excellent dispersion of graphite particles; homogeneous distribution of the binder, and high coating quality. In addition, it generates defect-free electrodes from a water-based slurry.

In-cell, the electrochemical characteristics are optimized for use with natural graphite, such as that sourced from China. The electrochemistry performance ensures effective electrolyte penetration, and good cycle performance with high capacity retention.

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