Binder-free FTO-ZnO/Carbon Nanofiber Composite for Lithium-ion Battery

A high theoretical capacity anode material is tin oxide. However, its practical use in lithium-ionbatteries has been limited by the volume growth and rapid capability fading during cycling(>۳۰۰%), which causes SnO۲ pulverization and extreme cycling deterioration. SnO۲-basedelectrode materials have been thought to face major challenges due to their weak conductivity andelectrochemical reversibility. Here, we show how to make FTO-ZnO/Carbon NF, which enablesvolume expansion and shortens the diffusion pathway for Li-ions. CNF is helpful in enhancing thenanocomposite's structural stability. Fluorine doping will increase the conductivity of SnO۲ in thissituation. Moreover, ZnO stopped Sn from aggregating, which gave rise to a stable and highdischarge capacity. Due to its high capacity retention, high reversible and rate capacity (۷۴۸mAh.g-۱ after ۵۰ cycles at a current density of ۱۰۰ mA.g-۱), the proposed anode holds substantialpotential for the effective development of ultrafast anode materials like Li-ion battery anodes.

Keywords:

Fluorine-doped tin oxide , carbon nanofiber , ZnO , anode , capacity , lithium-ion battery.