New & Alternative Chemistries

A Composite Anode Consisting Of A Layered Ternary Bi0.4Sb1.6Te3 And Graphene Developed For Potassium-ion Battery

Cycling stability and rate capability

Bi0.4Sb1.6Te3/graphene//KPB full cell

STRUCTUREPERFORMANCE CORRELATION Due to its lattice arrangement and structure, Bi0.4Sb1.6Te3/graphene exhibits a mitigated expansion of 28% during the potassiation/depotassiation process and demonstrates facile K+ ion transfer kinetics, enabling a lifetime of 500 cycles at high rates.

Both theoretical calculations and electrochemical examinations elucidate the K+ migration pathways

Synthesis: A composite anode was designed using a layered ternary Bi0.4Sb1.6Te3 anchored on graphene layers, where Bi atoms act as a lattice softening agent on Sb. Source: Adv. Mater. 2024, 36, 2313835

and indicate a reduction in energy barriers within Bi0.4Sb1.6Te3/graphene.

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