Temperature dependent dielectric characterization of manganese dioxide nanostructures with different morphologies at low frequency

A facile hydrothermal synthesis of MnO2 nanorod–reduced graphene oxide nanocomposites possessing excellent microwave absorption properties

“…The MnO 2 nanorod was prepared by a hydrothermal method with the same procedure as in our previous work. 27 In a typical synthesis, the as-received manganese sulfate mono-hydrate (MnSO 4 $H 2 O, 1.5 mmol) and potassium permanganate (KMnO 4 , 1 mmol) powders were dissolved in 40 ml deionized water successively under strong stirring at room temperature to obtain purple aqueous solution. The resulting solution was transferred into a Teon lined stainless steel autoclave (50 ml) aer magnetically stirring for 30 min.…”

Structural-controlled synthesis of manganese oxide nanostructures and their electrochemical properties

“…Several hydrothermal methods can be used in syntheses of MnO 2 nanostructures as well as other Mn oxides materials such as reduction of MnO 4 − , mixing of MnO 4 − and Mn 2+ , and oxidation of Mn 2+ compounds [6][7][8][9][10][11][12]. Recently, the synthesis of MnO 2 nanostructures using commercial Mn oxide solid powder, likes MnO 2 and Mn 2 O 3 , as raw materials by facile hydrothermal treatment has attracted attentions because it not only avoids complicated purification processes but also shows clearly the relationships between phases of the target products and the raw materials [13][14][15][16][17][18].…”

Mechanical, Dielectric, and Microwave-Absorption Properties of Alumina Ceramic Containing Dispersed Ti3SiC2

“…6 and 8, the real and imaginary parts of the complex permittivity are determined by the relaxation time s(T) and the electric conductivity r, respectively, which depend on the temperature. The relaxation time is given by 20 :…”