Innovative lithium storage enhancement in cation-deficient anatase via layered oxide hydrothermal transformation.

ABSTRACT: The soft-chemistry synthetic routes of anatase phases for energy conversion and storage usually employ expensive and air-sensitive amorphous alkoxides, which hardly access the electrochemically active cationic vacancy defects in the cationic donor-substituted anatase compositions. Here we demonstrate an innovative way of using layered K₃Ti₅NbO₁₄ as a cost-effectively crystalline precursor to synthesize cation-deficient Nb-doped TiO₂ (NTO, formulated as Ti_0.8Nb_0.16□_0.04O₂) anatase by a one-pot hydrothermal route. When used as an anode in lithium ion batteries, the NTO electrode displayed initial discharge and charge capacities of 618 and 384.6 mA h g^-1 at a current density of 0.2C respectively

SUBMITTER: Lu F 

PROVIDER: S-EPMC11467823 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature