Mica vs. Mica-Free EV Battery Shields: What Engineers Need to Know

A thermal runaway barrier comparison showing a high-temperature Mica Sheet protecting lithium-ion EV battery cells.

Introduction At the recent Battery Show in Detroit on October 14th, thermal management took center stage as automakers aggressively pushed for safer, higher-density lithium-ion pack designs. Amidst the technological showcases, a new narrative emerged: the push for “mica-free” EV battery shields. Prominent manufacturers, including Freudenberg, advertised new synthetic elastomer and composite barriers rated to 1,200°C, […]