TiO₂-coated LiCoO₂ electrodes fabricated by a sputtering deposition method for lithium-ion batteries with enhanced electrochemical performance.

ABSTRACT: We fabricated lithium cobalt oxide (LiCoO₂, LCO) electrodes in the absence and presence of TiO₂ layers as cathodes for lithium-ion batteries (LIBs) using a sputtering deposition method under an Ar atmosphere. In particular, TiO₂ coating layers on sputtered LCO electrodes were directly deposited in a layer-by-layer form with varying TiO₂ sputtering times from 60 to 120 s. These sputtered electrodes were heated at 600 °C in an air atmosphere for 3 h. The thicknesses of TiO₂ layers in TiO₂-coated LCO electrodes were controlled from ∼2 to ∼10 nm. These TiO₂-coated LCO electrodes exhibited superior electrochemical performance, i.e. high capacities (93-107 mA h g^-1@0.5C), improved retention of >60% aft

SUBMITTER: Moon SH 

PROVIDER: S-EPMC9061241 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature