High SYmmetric PowER (HYPER) Battery

This proposal aims to rethink the fundamental design of a high-power lithium-ion battery to realize the combined properties of high energy density, ultrafast charging and long cycle life. The team of Tyfast, 2matls, SpectraPower and UC San Diego have demonstrated electrode breakthroughs, experience in designing fast-charging batteries and use of novel electrolytes to deliver a battery cell exceeding EVs4ALL Category 1 target. Using a high capacity Li3V2O5 (LVO) anode, a high voltage manganese-rich stabilized-LiXNi0.25Mn0.75O2 (S-LNMO) cathode and a stable high voltage electrolyte based on acetonitrile chemistry, the team will design a total battery cell solution that exceeds the EVs4ALL program objectives. The LVO anode with fast lithium transport, near optimal working potential of 0.6V vs Li and below 2% linear expansion enables ultrafast charging as well as long cycle life. The S-LNMO cathode with ultrafast Li-diffusion, high voltage plateau of 4.7 V and enhanced material stability enables ultrafast charging batteries with high energy density and cycle life. Further, the novel LVO anode enables the use of high conductivity and high voltage stable acetonitrile-based electrolyte to meet high power and cycle life requirements. This project aims to deliver 10-Wh HYPER batteries that exceeds EVs4ALL Category 1 performance metrics while meeting cost and manufacturing projections required for broad EV adoption.