New Material Could Double The Autonomy Of Electric Vehicle Batteries

A team of researchers from the Korea Institute of Science and Technology has developed a new carbon-silicon material that, according to them, could more than double the range of electric vehicles and allow fast charging of more than 80% of their capacity in just five minutes.

Currently, electric vehicles generally use graphite anode batteries , which tend to provide a shorter range compared to gasoline vehicles, according to the researchers. The anodes of silicon, on the other hand, are ten times more capacity, but much worse to maintain capacity over time.

The team, led by Hun-Gi Jung, devised a way to keep these silicon anodes stable using ” a simple thermal process used to fry food, ” according to a statement, which involves the use of water, oil and starch.

The results were impressive : They say the new battery has four times the capacity of its graphite anode counterparts and was stable for 500 cycles. Thanks to the carbon present in its silicon anode, the silicon also did not expand, which is a common problem in technology.

We were able to develop carbon-silicon composites using common, everyday materials and simple mixing and thermal processes without reactors. These new compounds work so well that they are very likely to be commercialized and mass-produced.

Hun-Gi Jung.

More information: pubs.acs.org

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