Columbia University aims to modulate the cycling behavior of conventional Li-ion battery materials in a bobbin cell format. The team will optimize electrode compositions, properties, and dimensions with corresponding cell configurations using standard commodity Li-ion materials and established bobbin cell manufacturing techniques. These cells will be suitable for 4-hour charge, and cost profiles amenable to 8-to-16-hour discharge. The team will produce Li-ion cells capable of cycling for more than 10 years at a discharge duration of 8 to 16 hours and a levelized cost of storage under $0.05/kWh.
By combining existing materials with longer duration form factors, like the bobbin cell, Columbia University will accelerate the cost curves for Li-ion grid scale storage cells from Bloomberg New Energy Finance’s forecasted time of~$50/kWh in 2035 to 2025. These cells will be suitable for daily, long duration grid storage applications.