Recently, a research team led by Professor Hu Fangyuan at the School of Materials Science and Engineering, Dalian University of Technology, has unveiled a novel strategy for developing "intelligent symbiotic" lithium-sulfur batteries. This innovation successfully broadens the operational temperature range of lithium-sulfur batteries from a frigid -120°C to a warm 60°C. The strategy ingeniously combines micro-temperature sensors, intelligent control chips, and magnetically responsive cathode materials. By harnessing alternating magnetic fields, it creates a synergistic effect across multiple physical fields at the electrode/electrolyte interface. This breakthrough effectively overcomes the challenge of sluggish polysulfide conversion kinetics in low-temperature conditions.

Experimental results demonstrate that the battery can maintain stable cycling for 2,800 hours at -20°C. Even at a bone-chilling -80°C, its energy density remains impressive at 454.5 Wh·kg⁻¹ (or 219.1 Wh·kg⁻¹ after accounting for energy consumption). Furthermore, the kinetic enhancements induced by the magnetic field showcase remarkable reversibility and stability. The related research findings have been published in the esteemed international journal National Science Review and have successfully undergone performance testing and certification by the Light Industry Chemical Power Sources Institute, a reputable third-party organization.

This groundbreaking technology holds immense promise for applications in extreme environments, such as near-space exploration and polar expeditions. It paves the way for the development of high-specific-energy power sources capable of operating across a wide temperature spectrum.