Abstract:
The disclosure relates to a precursor manufacturing a lithium rich cathode active material and a Lithium rich cathode active material using the same, more specifically relates to a novel precursor for manufacturing a lithium rich cathode active material of which capacity properties and cycle life characteristics are considerably improved by solving a problem of conventional lithium rich cathode active material, and a Lithium rich cathode active material using the same.
Abstract:
Disclosed are a precursor of a positive active material for a rechargeable lithium battery and a preparation method thereof, and a positive active material and a rechargeable lithium battery including the same, and specifically a precursor for a rechargeable lithium battery is represented by the following Chemical Formula 1, wherein a manganese ion concentration deviation in the precursor is within 3 wt %. NixCoyMn1−x−y−zMz(OH)2 [Chemical Formula 1] (0
Abstract:
There are provided a sodium-metal chloride secondary battery and a method of manufacturing the same. A secondary battery that is operated at room temperature and has a more stable electrochemical characteristic is provided. The present invention provides a sodium-metal chloride secondary battery and a method of manufacturing the same. The battery includes an anode made of a sodium-containing inorganic material, an electrolytic solution containing an electrolyte (NaAlCl4) and a solvent (sulfur dioxide), and a cathode including a carbon-based material in which NaCl is generated and decomposed according to an oxidation-reduction reaction of NaAlCl4-xSO2 and a metal chloride (CuCl2).
Abstract:
A method of preparing a positive active material for a lithium secondary battery represented by the following Chemical Formula 1 (LiwNixCoyMn1-x-y-zMzO2) includes: (a) preparing a metal salt aqueous solution including a lithium raw material, a manganese raw material, a nickel raw material, and a cobalt raw material; (b) wet-pulverizing the metal salt aqueous solution using beads having a particle diameter of 0.05 to 0.30 mm at 2000 to 6000 rpm for 2 to 12 hours to prepare a slurry; (c) adding a carbon source to the slurry; (d) spray-drying the slurry of the step (c) to prepare a mixed powder; and (e) heat-treating the mixed powder.
Abstract:
Disclosed are a precursor of a positive active material for a rechargeable lithium battery and a preparation method thereof, and a positive active material and a rechargeable lithium battery including the same, and specifically a precursor for a rechargeable lithium battery is represented by the following Chemical Formula 1, wherein a manganese ion concentration deviation in the precursor is within 3 wt %. NixCoyMn1-x-y-zMz(OH)2 [Chemical Formula 1] (0