A high-voltage cathode breakthrough for next-generation batteries

Engineers working in energy storage have long regarded iron as an attractive but fundamentally limited cathode material. Abundant, low-cost and geopolitically secure, iron has already displaced cobalt and nickel in many lithium-ion batteries through lithium iron phosphate (LFP) chemistries. Yet iron’s relatively low operating voltage has constrained energy density, forcing designers to trade performance against sustainability and cost

New research led by Stanford University and SLAC National...