Abstract:
The present invention is a composite of manganese compound and carbon with which an electrode and an electrochemical element with output characteristics and high energy density can be obtained, and a manufacturing method therefor. The composite comprises a manganese compound with 2-8 Å subnano-sized tunnel structures and carbon, and is obtained by a first composite treatment in which composite powder is generated by subjecting a solution containing manganese compound and carbon powder starting materials to sheer stress and centrifugal force within a rotation reactor vessel to induce a reaction; and a heat treatment in which the composite powder resulting from the composite treatment is heated in a vacuum. The composite includes MnO, MnOOH, or Mn3O4. Furthermore, ketjen black can be used for the carbon particles.
Abstract:
The invention aims at producing metal oxide nanoparticles and carbon carrying metal oxide nanoparticles supported thereon in a highly dispersed state by an accelerated liquid-phase chemical reaction and providing electrodes containing the carbon and electrochemical devices provided with the electrodes. The accelerated liquid-phase chemical reaction is attained by applying a shear stress and a centrifugal force to reactants in a rotating reactor in course of the reaction. Further, the carbon carrying metal oxide nanoparticles supported thereon in a highly dispersed state is made from both metal oxide nanoparticles produced by an accelerated liquid-phase chemical reaction wherein a shear stress and a centrifugal force are applied to reactants in a rotating reactor in the course of the reaction and carbon dispersed in the rotating reactor by applying a shear stress and a centrifugal force. Electrochemical devices made by using the carbon carrying the metal oxide nanoparticles as the electrode have high output and high capacity characteristics.