Brendan Wirtz Rose Hills
Investigating Lithium Plating Detection in Graphite/NMC Lithium-Ion Batteries
Lithium-ion batteries are a prominent energy storage technology with widespread applications in electronics and electric vehicles. Using Li-ion batteries in electric vehicles is especially attractive to decrease reliance on fossil fuels for transportation, but slow charge times dissuade consumers from purchasing them. A barrier to faster charging is a phenomena that occurs at high charge rates at the graphite electrode called lithium plating, which reduces the amount of energy the battery stores after charge and in extreme cases can short the battery. Being able to detect the occurrence of lithium plating without having to disassemble the battery is of great interest for application in electric vehicles that will make extreme fast charging more feasible. My SURF project will assess the capabilities of a lithium plating detection technique that uses only voltage and time data. Using this technique, I will study extreme fast charging and determine how fast Li-ion batteries can be charged while avoiding lithium plating.