NICKEL COMPOSITE HYDROXIDE FOR LITHIUM SECONDARY BATTERY, LITHIUM COMPLEX OXIDE FOR LITHIUM SECONDARY BATTERY PREPARED THEREFROM, PREPARING METHOD THEREOF, POSITIVE ELECTRODE INCLUDING THE SAME, AND LITHIUM SECONDARY BATTERY EMPLOYING THE SAME

• Main Authors: SEO, JIN HYOUNG, LEE, HYUN DEOK, PARK, YONG CHUL, KIM, MIN JU, HEO, GYEONG JAE, SONG, MI RAN, KIM, YONG SEON, KIM, DO YU
• Format: Patent
• Language: English; Korean
• Published: 08.05.2013
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PURPOSE: A nickel composite hydroxide for a lithium secondary battery is provided to improve particle diameter and density, thereby improving lifetime of a lithium secondary battery. CONSTITUTION: A nickel composite hydroxide for a lithium secondary battery is represented by chemical formula 1: Ni_(1-x-y-z)Co_xM_yMn_z(OH)_2 and has a small composition distribution of M. In chemical formula 1, M is Al, Zr, Ti, Mg, Si, or Zn; x is a number from 0-0.5; y is a number from 0.01-0.2; and z is a number from 0-0.5. The composition distribution of M is 2% or less in EDS(energy dispersive spectroscopy) analysis. The average particle diameter of the nickel composite hydroxide is 5-25 micron and tab density is 1.0-3.0 g/cm^3. [Reference numerals] (10) Ni, Co aqueous solution; (11) NH_4OH aqueous solution; (12) NaOH aqueous solution; (13) Al(OBu)_3 + acetyl acetone ethanol solution; (15) PH controller; (AA) Pump; (BB) Product