Cooperation must win together
New Research: Adding graphene to a silicon electrode can double the life of a lithium battery
For a long time, researchers and manufacturers have been trying to replace the use of graphite in the battery with silicon, because it is not only rich in reserves, but also has a weight energy density 10 times that of graphite. However, since silicon has the following problems when it is used in an anode, it has not been successfully applied: silicon particles swell in volume after being lithiated and chemically agglomerate, and over time, hinder further charge-discharge efficiency. In addition, silicon does not have enough elasticity to withstand the pressure of lithium when it is repeatedly charged, resulting in cracking and rapid degradation of the composite microstructure of the anode, which in turn leads to capacity decay and cathodic degradation.