Design of Rugby-Like GeO₂ Grown on Carbon Cloth as a Flexible Anode for High-Performance Lithium-Ion Batteries.

The new demands for energy storage systems have been placed with demands for flexible wearable electronics. Herein, rugby-like GeO₂ nanoparticles (NPs) have been directly grown on carbon cloth (GeO₂ NPs/CC) through a one-step hydrolysis process at room temperature, which can be used as a self-supporting flexible anode for lithium ion battery (LIBs). The rugby-like GeO₂ NPs/CC showed an improved lithium-storage performance with features of high reversible capacity ~2000 mA·h·g-1 even after 100 cycles and good cycling stability. Besides, its initial coulomb efficiency (79.1%) was also enhanced compared to that of some reported GeO₂-based materials.