Facile synthesis of carbon and oxygen vacancy co-modified TiNb₆O₁₇ as an anode material for lithium-ion batteries.

ABSTRACT: Titanium niobium oxides (TNOs), benefitting from their large specific capacity and Wadsley-Roth shear structure, are competitive anode materials for high-energy density and high-rate lithium-ion batteries. Herein, carbon and oxygen vacancy co-modified TiNb₆O₁₇ (A-TNO) was synthesized through a facile sol-gel reaction with subsequent heat treatment and ball-milling. Characterizations indicated that A-TNO is composed of nanosized primary particles, and the carbon content is about 0.7 wt%. The nanoparticles increase the contact area of the electrode and electrolyte and shorten the lithium-ion diffusion distance. The carbon and oxygen vacancies decrease the charge transfer resistance and enhance the Li-ion diffusion coefficient of the obtained anode material. As a result

SUBMITTER: Shang Y 

PROVIDER: S-EPMC9053084 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature