Table 1 The precursor solution compositions and conditions of hydrothermal reaction for preparing nanostructured MnO2.

From: Nanostrucutured MnO2-TiN nanotube arrays for advanced supercapacitor electrode material

Solution

KMnO4

MnSO4·H2O

HCl

H2O

Temperature [°C]

Time [h]

Sample

M-1

0.875 g

0.35 g

70 mL

140

3

TN-MO-SS

12

TN-MO-S

18

TN-MO-SR

M-2

1.106 g

0.88 mL

70 mL

150

6

TN-MO-RS

M-3

0.7875 g

1.75 mL

70 mL

150

12

TN-MO-R