US Startup's Third-Gen Battery Beats 3,600°F to Deliver 10,000 Cycles

US startup's third-gen battery beats 3,600°F to deliver 10,000 cycles

In a recent experiment, engineers did something that would usually cause a fire: they blasted a high-capacity battery with a 3,600°F propane torch.  There was no explosion, no frantic hissing, or toxic plume. In fact, the moment the torch was clicked off, the flames simply vanished.  This week, MIT spinoff PolyJoule, Inc., officially pulled the curtain back on its third-generation battery chemistry, a technology designed to “self-extinguish.”  W…

PolyJoule Reinvents Battery Safety for the Energy Storage Era PolyJoule Reinvents Battery Safety for the Energy Storage Era

PolyJoule Reinvents Battery Safety for the Energy Storage Era The global energy transition is racing ahead, but the infrastructure supporting it continues to face an uncomfortable truth. As battery energy storage systems become larger, more widespread and increasingly embedded into cities, industrial sites and transport infrastructure, concerns over fire safety, thermal runaway and supply chain resilience are growing just as quickly as deploymen…

PolyJoule's 3rd-gen conductive polymer battery self-extinguishes at 3,600 °F and delivers 10,000+ cycles

olyJoule has released its third-generation conductive polymer battery chemistry, packaged in a new large-format prismatic cell with a new proprietary polymer cathode and a liquid salt electrolyte. The MIT spinout is targeting markets where lithium-ion fire risk creates barriers—dense commercial buildings, residential installations and indoor industrial environments. Conventional battery chemistries—lithium-ion, lead-acid, nickel, sodium-ion—stor…

PolyJoule unveils 3rd-generation, self-extinguishing, conductive polymer chemistry for battery energy storage systems

BILLERICA, Mass.--(BUSINESS WIRE)--May 6, 2026-