Prestoring lithium in a 3D carbon fiber cloth coated with MOF-derived MnO for composite lithium anodes with high areal capacity and current density

Abstract

Three-dimensional (3D) conductive frameworks have drawn a lot of interest in the field of lithium-metal anodes because of their superior electronic conductivity and structural integrity. In this study, we propose a facile design utilizing a commercial carbon fiber cloth (CFC) coated with metal–organic-framework-derived MnO nanoparticles as a 3D host for prestoring molten lithium and successfully fabricate a CFC@MnO@Li composite anode, which can effectively suppress the growth of lithium dendrites while improving the long-term cycling performance of the battery. Compared to bare lithium batteries, CFC@MnO@Li||LiFePO₄ cells exhibit higher specific capacity, superior rate performance, and long-term stability, which demonstrates their enormous potential in further practical applications.