Binder-Free Ge-Co-P Anode Material for Lithium-Ion and Sodium-Ion Batteries

Abstract

Nanostructure composites Ge-Co-P with brutto-composition CoGe2P0.1, or CoGe2@GeP were manufactured via electrolysis of aqueous electrolyte. Such composites are able to reversible insertion of lithium and sodium with specific capacities up to 855 and 425 mAh/g, respectively. The main advantage of the composites consists in their excellent cycleability.

Keywords

• lithium-ion batteries
• sodium-ion batteries
• lithium insertion
• sodium insertion
• germanium
• cobalt