Practical Implementation of Magnetite-Based Conversion-Type Negative Electrodes via Electrochemical Prelithiation.

We report the performance of a conversion-type magnetite-decorated partially reduced graphene oxide (FeO@PrGO) negative electrode material in full-cell configuration with LiNiCoAlO (NCA) positive electrodes. To enable practical implementation of the conversion-type negative electrodes in full cells, the beneficial impact of electrochemical prelithiation on mitigating active lithium losses and improving cycle life is shown here for the first time in the literature. The initial Coulombic efficiency (ICE) of the full cells is improved from 70.