TITANIUM DIOXIDE NANO PARTICLE, TITANATE, LITHIUM TITANATE NANO PARTICLE AND METHOD FOR PREPARATION METHODS THEREOF

• Main Authors: KIM, DONG HYUN, CHUNG, SEOK MO, SON, JONG HOON, SEOK, JUN O, KIM, JHI YONG
• Format: Patent
• Language: English; Korean
• Published: 09.07.2013
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT THEREOF; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS,MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES ASDISCRETE UNITS; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

PURPOSE: A manufacturing method of titanium dioxide nanopowder is provided to change physical electrochemical properties of titanium dioxide nanopowder with the grain size control by producing titanium dioxide nanopowder having quasicrystal phase through the hydrothermal reaction mixing jelly form TiOCl2 and water. CONSTITUTION: A titanium dioxide nanopowder has a mesophase phase (a medium phase of amorphous and crystalline). The XRD major peak of the mesophase phase is relatively shifted and broadening. The average granularity of the titanium dioxide nanopowder is 150nm or less. The manufacturing method of the titanium dioxide nanopowder comprises the following steps: (a) preparing jelly form TiOCl2 by blending TiCl4 solution and water together and obtaining titanium dioxide nanopowder having the mesophase portion through the hydrothermal reaction, and (b) mixing jelly form TiOCl2 and water. The step (a) controls the amount of water so that the Ti3+ ion concentration can be 0.1-1.3M. The step (b) controls the amount of water so that the Ti3+ ion concentration can be 1.5-4.3M. The reaction of titanium dioxide nanopowder having the mesophase and an alkaline solution produces one-way titanate. The reaction of one-way titanate and the lithium hydroxide produces lithium titanate.