Russian scientists have discovered a new mineral that can increase the efficiency of sodium-ion batteries
A group of researchers recently discovered a mineral with an unusual crystal structure that can be used to make a new type of cathode for sodium-ion batteries.
While studying cinder cones near the Tolbachik volcano in Kamchatka, scientists from St. Petersburg University discovered a mineral called petrovite, which consists of blue spherical crystals with gas inclusions. In addition to its attractive appearance, it has an extremely rare crystal structure with 7 oxygen atoms.
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Petrovit consists of oxygen, sodium, sulfur and copper, which form a porous framework (chemical formula Na10CaCu2 (SO4) 8). Studies have shown that the mineral has many voids, connected by channels through which sodium atoms can move.
This feature makes it a promising material from the point of view of ionic conductivity, which can be used to manufacture a new type of cathodes for sodium-ion batteries. However, this will require increasing the copper content with its structure.
Recall that recently Russian scientists have also found a way to increase the strength of the material for aircraft construction by 1.5 times.
, St. Petersburg State University