Surface-modified Li[Ni_0.8Co_0.15Al_0.05]O₂Cathode Fabricated using Polyvinylidene Fluoride as a Novel Coating

Abstract

This study describes the effect of coating the Li[Ni 0. 8cathode surface with a homogeneous carbon layer produced by carbonization of polyvinylidene fluoride (PVDF) as a novel organic source. The phase integrity of the above cathode was not affected by the carbon coating, whereas its rate capability and cycling performance were enhanced. Similarly, the cathode thermal stability was also improved after coating, which additionally protected the cathode surface against the reactive electrolyte containing hydrofluoric acid (HF). The results show that coating the Li[Nicathode with carbon using the PVDF precursor is an effective approach to enhance its electrochemical properties.