Farasis Energy and Group14 Technologies have developed a new silicon-based anode for an EV-scale battery. In cells built and tested by Farasis using Group14’s silicon-carbon anode material SCC55, the company says it can reach a specific energy of 330 Wh/kg (750 Wh/L energy density) in typical automotive cells, and deliver more than 1,000 charge-discharge cycles.
“Traditional batteries using graphite for anode materials typically can approach 260 Wh/kg [specific energy], so this performance boost over traditional batteries represents a breakthrough for EV applications,” said Dr. Keith Kepler, CTO of Farasis.
Dr. Rick Costantino, CTO of Group14, said, “This is a significant milestone in our goal to enable EVs to achieve true cost parity with internal combustion engines, and Group14 is ready to deliver our lithium-silicon battery technology manufactured in our commercial-scale factory in Washington state.”
Source: Farasis Energy