MnO2/Carbon Nanofibers Material as High-Performance Anode for Lithium-Ion Batteries

Abstract

MnO2 has advantages such as the simple and diverse preparation methods, low cost and high theoretical capacity, but its industrial application is affected by its poor conductivity and fast attenuation of cycle performance. In order to improve its conductivity, battery capacity and performance, MnO2/carbon nanofibers (MnO2/CNFs) are obtained by using electrospinning technology, and the electrochemical performance was confirmed by XRD, SEM, TEM. Confirmed by comparison, the 20% MnO2/CNFs exhibit superior and excellent long cycling performance with a reversible capacity of 835 mA h g−1 at 0.1 A g−1 after the 133th cycle and a high initial specific capacity of 1094 mA h g−1 at a current density of 0.1 A g−1. The MnO2/CNFs have notable specific capacities with a coulombic efficiency of 99.5%, which greatly improve the reaction rate. This can also be used as a flexible electrode material because of its good flexibility. Due to the fact that carbon has better electron/ion conductivity, it shows better kinetics.

Carbon–based Materials for Li‐ion Battery

“…Carbon nanofibers (CNFs) are the tubular one‐dimensional structure of sp 2 ‐hybridized carbonaceous materials having high electrical conductivity along the longitudinal direction [252–254] . The improved surface‐to‐volume ratio at the electrode‐electrolyte interface enhances electrolyte wettability and facilitates ionic transport by reducing the ionic transport length, making it a promising anode material for Li‐ion batteries [255–259] . Various strategies such as catalytic chemical vapor deposition (CVD) growth, electrospinning, template‐based synthesis, and biomass methods are used for the synthesis of CNFs [252,258,260–264] .…”

Manganese dioxide (MnO2) and biomass-derived carbon-based electroactive composite materials for supercapacitor applications

“…Its high specific capacity but its poor conductivity and stability limits its application as an SC. 107 Biomass-derived carbon can improve the electrical conductivity of MnO 2 by forming a conductive network or coating on the surface of MnO 2 . This can increase the charge transfer rate and reduce the internal resistance of the electrode.…”