Preparation and characterization of manganese dioxide-graphene composite electrode materials
ZHANG Xia
LI Jing
PENG Rufang
HUANG Yeju
GUO Lei
XIAO Honglin
Abstract：MnO2 and MnO2-Graphene composites as anode material for lithium-ion batteries were synthesized by a conventional hydrothermal route.The samples were investigated by X-ray diffraction,scanning electron microscopy,galvanostatic charge-discharge,cyclic voltammetry and AC impedance methods.The present results indicated that the synthesized MnO2 is β-MnO2,which is a length of 1 ～2 μm,and the diameter of the nanorods within 200 nm.The β-MnO2-GNs composites present a good discharge specific capacity of 659.8 mA ·h/g at a current density of 0.1 Cafter 60 cycles,the retention rate of discharge capacity is 46.4％ and have a excellent rate capability of 418 mA·h/g at a current density of 5 C.
Keywords：graphenemanganese dioxidelithium-ion batterieselectrochemical properties
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)