Revolutionary Lithium-Metal Battery developed by South Korean scientists promises, promising 800 km autonomy, 12-minute charging and durability over 300,000 kilometers, “opens a new era for electric vehicle battery technology.”
Korea Advanced Institute of Science and Technology (Kaist) investigators have announced a new lithium-metal battery resistant to the formation of dendritis, capable of offering more 33% autonomy than traditional lithium -ion batteries.
The advance allows increase autonomy from electric vehicles from 600 to 800 km, ensure ultra-fast charges only 12 minutes, and a durability greater than 300 thousand kilometers.
The methodology used to develop the new lithium-metal battery was presented in a published last week in the magazine Nature Energy.
Num, Kaist’s Fronter Research Laboratory (FRL) stressed that this research project, developed over four years, “Opens a new era For electric vehicle battery technology ”, by solving the problem of the formation of dendritis in lithium-metal batteries.
Unlike conventional lithium -ion batteries -Where the anode is graffiti-in lithium-metal batteries the anode is composed of the metal itself. This drawing increases energy storage capacity and, consequently, the autonomy.
However, the lithium-metal batteries have always faced a great obstacle: During loading cycles, small branches -like crystalline structures appear, known as dendriteswhich compromise performance and can cause irreversible short circuit.
The phenomenon gets worse in fast loadswhich so far made the practical application of this technology difficult. According to researchers, “the fundamental cause of the formation of dendritis during fast loading is related to the non -uniform interphalial cohesion on the surface of the metallic lithium ”.
To overcome this limitation, the team led by the teacher Hee thanks Kimfrom the Department of Kaist Chemical and Biomolecular Engineering, in collaboration with LG Energy Solution, developed a new liquid electrolyte With cohesion inhibiting properties, specially designed to lock the growth of dendritis.
Unlike the electrolytes used so far, this solution has an anionic structure with Low affinity for lithium -ionreducing the irregularity of the metal interface.
Onovo material Effectively suppresses the formation of dendritismaintaining this protection even in fast loading conditions. In addition, it exceeds one of the main limitations of lithium-metal batteries: a slowness In the process of loading, while preserving a high energy density.
“Our four-year work to increase autonomy and enable the rapid loading of lithium-metal batteries constitute an essential basis for overcome the technical challenges of this technologyIn understanding the interfacial structure, ”said Professor Kim.“ This investigation exceeded the largest barrier to the introduction of lithium-metal batteries in electric vehicles. ”
The advance may now be announced another step to overcome the problem of, the common fear among the owners of do not have enough energy to reach a destination – which is, along with loading times, one of the barriers to the adoption of electric vehicles.
