Japanese chemists have developed a new complex lithium hydride superionic conductor that will create an all-solid state battery with the highest energy density to date..
Solid state drives can solve the main disadvantages of modern lithium-ion batteries, such as electrolyte leakage, flammability, and limited energy density. The optimal anode material for them is metallic Li, which has the maximum theoretical capacity (3860 mAh / g) and the lowest potential among the known alternatives..
Energy 101: Energy Density
The problem is that most of the existing solid electrolytes are chemically unstable or poorly in contact with lithium, which significantly reduces the performance of devices during repeated cycles. However, researchers from Tohoku University managed to make a breakthrough in this direction..
They have developed a new solid electrolyte with high ionic conductivity and stability against metallic lithium at room temperature. The unique properties of the material are due to its structure, which consists of two different hydrogen clusters (complex anions).
According to scientists, they expect that the complex hydride they have created with superionic conductivity will lead to the development of new electrochemical devices with high energy density indicators, as well as stimulate new research in this direction..
Toyota Motors and Panasonic are also exploring this technology and have already agreed establish a joint production solid-state batteries for cars, the capacity of which will be 50 times greater than that of existing ones.
text: Ilya Bauer, photo: greenfleet, Sangryun Kim and Shin-ichi Orimo