CarboxylMethyl Cellulose ( CMC ) Battery Grade
CMC is used as an electrode binder for advanced batteries such as lithium-ion batteries, especially for graphite anodes. Compared with traditional non-water-soluble binders like polyvinylidene fluoride (PVDF), the water solubility of CMC makes it less toxic during processing and lower in cost.
In batteries, CMC plays a role in suspending and stabilizing active substances, while also stabilizing the structure of the electrode sheets and improving the fluidity of the slurry. Improve the charging and discharging performance .
The application in batteries is mainly reflected in the following aspects :
Binder: As a water-based binder, CMC can closely combine active materials and conductive agents to form a stable electrode structure, thereby enhancing the battery's capacity and cycle life .
• Dispersant: CMC can effectively prevent the agglomeration of anode materials, ensure the uniform distribution of active material particles in the slurry, and improve the electrochemical performance of the electrode .
• Stabilizer: CMC provides stability and optimizes process parameters during electrode processing, improves the battery's cycle performance, and extends the battery's service life .
• Silicon electrode application: CMC-Na exhibits excellent adhesion strength and cycling stability in the silicon electrodes of lithium-ion batteries, significantly enhancing the performance of the batteries.
• Environmental friendliness: CMC has received extensive attention due to its excellent environmental friendliness and renewability, especially in the field of lithium-ion batteries .