1 research outputs found
Construction of Uniform Cobalt-Based Nanoshells and Its Potential for Improving Li-Ion Battery Performance
Surface
cobalt doping is an effective and economic way to improve the electrochemical
performance of cathode materials. Herein, by tuning the precipitation
kinetics of Co<sup>2+</sup>, we demonstrate an aqueous-based protocol
to grow uniform basic cobaltous carbonate coating layer onto different
substrates, and the thickness of the coating layer can be adjusted
precisely in nanometer accuracy. Accordingly, by sintering the cobalt-coated
LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> cathode materials,
an epitaxial cobalt-doped surface layer will be formed, which will
act as a protective layer without hindering charge transfer. Consequently,
improved battery performance is obtained because of the suppression
of interfacial degradation