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Hexagonal Mn(OH)2 nanoplates with thickness of about 20nm were synthesized by a simple hydrothermal method. Each nanoplate consists of several porous nanosheets and the pores in nanosheets are of about 10nm. Electrochemical tests reveal that the as-prepared multilayered porous Mn(OH)2 nanoplate has a capacitance of 147.4F/g at 0.1A/g, good rate capability of 21.6F/g even at a high current density...
Hexagonal hydrohausmannite plates with lateral length of several microns and thickness of about 30nm were synthesized by a simple hydrothermal method. The plates are composed of several porous thin sheets and each sheet is formed by self-assembled nanoparticles of about 50nm. Electrochemical tests reveal that the sample has a high specific capacitance (222.4F/g at 0.1A/g) and good rate capability...
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