Optimization of slurry stability for lithium ion battery

The effect of the mixing process, solid content, viscosity of slurry and stabilizer on the stability of lithium ion battery slurry was studied by the stability tester, paste viscosity meter and other test methods. The results show that the CMC(carboxyl methyl cellulose) with higher degree of substitution and viscosity is helpful to improve the stability of the battery slurry. To achieve the best performance of slurry stability for anode formula of A1, the optimized mixing process is high viscosity mixing process; the optimized CMC is B; the optimized solid content is 46%; the optimized slurry viscosity is 4 000 m Pa·s.