Facile Preparation of 1D α-MnO2 as Anode Materials for Li-ion Batteries

Abstract

Manganese dioxide (MnO 2 ) has been studied as an anode material for Li-ion batteries beyond its high theoretical specific capacity and low-cost. In this work, the 1D -MnO 2 nanomaterials with different morphology were synthesized via a facile and green hydrothermal method. These materials are carefully investigated by XRD, Raman, SEM and BET techniques. The results show that the solution acidity strongly influenced the morphology and the specific surface area of the sample. The electrochemical behaviors of MnO 2 sample were systematically investigated by cyclic voltammetry and galvanostatic charge-discharge. As anode materials for Li-ion batteries, both of 1.2-MnO 2 and 3.6-MnO 2 deliver high initial discharge capacity and relatively excellent cycle performance, indicating that 1D -MnO 2 is a promising anode material for high-performance lithium ion batteries.

Synthesis of Phosphonated Carbon Nanotubes: New Insight into Carbon Nanotubes Functionalization

“…In MWCNT–Phos–Mn the band is observed at 662 cm −1 and its shift to higher wavenumbers may be due to the presence of carbon material in the sample. A similar behaviour was observed for MnO 2 /graphene composites by Liu et al [ 67 ].…”

Basic Medium Heterogeneous Solution Synthesis of α-MnO2 Nanoflakes as an Anode or Cathode in Half Cell Configuration (vs. Lithium) of Li-Ion Batteries

“…The majority of research used acidic medium for fabricating MnO 2 . Especially, hydrothermal approaches in acidic medium for preparation of the MnO 2 are well reported [ 18 , 19 ]. In realization of this approach, a broad variety of precursors and conditions have been evaluated.…”