Want to popularize new energy vehicles in large areas, the range and charging speed is the number one problem that must be solved. South Korean media reported recently, the Korean Academy of Sciences (KIST) has successfully developed a silicon-based anode material to replace the current electric vehicle power battery commonly used graphite material. It is reported that the silicon-based anode can increase capacity by as much as four times.
Silicon is not a new material, and its storage capacity is ten times that of graphite, so many battery companies use silicon-based materials to improve battery performance. However, silicon as an anode material has a fatal disadvantage – silicon is less stable during charging/discharge, greatly reducing battery life.
KIST’s new technology is different. They used a drying treatment of the silicon, mixed it with corn starch and water, and then heated the mixture. The result is a carbon-silicon composite, in which tiny carbon spheres prevent silicon from melting.
It is reported that when the test, it was found that the anode made of composite materials has four times the storage capacity of graphite-like anodes, and they remain stable during the 500 charge/discharge cycle. In addition, the new anode battery can be fully charged to 80% of its full capacity in as little as 5 minutes.
KIST said it hopes to quickly land and commercialize the project, contributing to the advancement of the entire electric vehicle industry.