Metal/Metal Oxide (N-MnO/rGO) Encapsulated Carbon Nanofiber Composites for High-performance Li-ion Batteries

Synthesis of highly flexible freestanding electrode materials is of great interest for energy storage applications. The electrospinning technique is used to develop reduced graphene doped manganese oxide carbon nanofiber (N-MnO/rGO CNFs) composite electrodes. During the carbonization process, MnO 2 nanowires (NWs) are converted into MnO nanoparticles (NPs) and distributed on the CNFs. XRD, Raman, and XPS are used to investigate the structural properties and chemical state of composites. The N-MnO/rGO CNFs composite had a large specific surface area of 135.67 m 2 g −1 . The N-MnO/rGO CNFs composite membranes are used as freestanding electrodes in lithium-ion battery (LIB) applications. The N-MnO/rGO CNFs composite membrane showed a specific discharge capacity of 1478 mAhg −1 at 0.1 Ag −1 . Moreover, it exhibited outstanding cycling performance by maintaining a capacity of 894 mAh g −1 for 250 cycles even at high current density of 1 Ag − . N-MnO/rGO CNFs freestanding electrodes are promising candidates for practical application in flexible electronics. Graphical Abstract