Rational Design of Multinary Metal Chalcogenide BiSbTe Nanocrystals for Efficient Potassium Storage.

Multinary metal chalcogenides hold considerable promise for high-energy potassium storage due to their numerous redox reactions. However, challenges arise from issues such as volume expansion and sluggish kinetics. Here, a design featuring a layered ternary BiSbTe anchored on graphene layers as a composite anode, where Bi atoms act as a lattice softening agent on Sb, is presented.