Sodium Carboxymethyl Cellulose For Battery Industry

CMC, with the strong cohesion, good heat stability, electrical conductivity and electrochemistry property, makes the active substance and electrolyte form the even and dispersive paste, and takes the hydrogen bond effect with the silicon, therefore, it is not only widely used as the binder of cathode and anode, gel for cathode protection, but also widely applied in the silicon base electrode and graphite modification.

Application in binder of cathode and anode

Binder has the great impact on the electrode property of the battery. Appropriate binder can effectively change the general performance of the electrode, and make the active substance, conductive agent and current collector contact evenly, and enhance the completeness of the electrode. As the binder, CMC can be widely applied in the kinds of electrode material such as lithium battery, natural graphite, mcmb, lithium titanate, tin-based, silicon-based negative electrode material and iron-phosphate-based lithium cathode material etc. It greatly enhances the battery capacity, circulation stability and lifespan circulation. CMC shows the effect in the binder of cathode and anode as follows:

*bind the active substance, conductive agent and current collector together;

*Fix firmly electrode material on the current collector;

*Excellent conductivity reduces the impedance between electrode material and current collector;

*Excellent electrochemistry property extends the battery capacity;

*Good heat stability enhances the battery circulation stability and lifespan circulation;

*Good electrochemistry stability, and stable with the electrode material and electrolyte;

*Release the expansion and shrink during the li-battery in charging or discharging;

*Less usage, strength bind, low load discharging;

*Safety, eco-friendly, and low cost.