LITHIUM TITANATE CRYSTAL STRUCTURE, COMPLEX OF LITHIUM TITANATE CRYSTAL STRUCTURE AND CARBON, MANUFACTURING METHOD FOR SAME, ELECTRODE AND ELECTROCHEMICAL ELEMENT USING SAME

摘要

Disclosed are a lithium titanate crystal structure suitable for the manufacture of electrodes and electrochemical elements exhibiting superior electrical characteristics, and a complex of the lithium titanate crystal structure and carbon nanofibers. A lithium titanate crystal structure having a thickness to the level of several atomic layers and having a planar two-dimensional surface is supported in a highly dispersed state on carbon nanofibers (CNF). The precursor of the lithium titanate crystal structure and the CNF which support the same are prepared by a mechanochemical reaction in which shear stress and centrifugal force are applied to reagents in a rotating reaction vessel. The mass ratio of the lithium titanate crystal structure to the CNF is preferably 75:25-85:15. The CNF preferably have an external diameter of 10-30nm, and an external specific surface area of 150-350 cm²/g. The resultant complex is mixed with a binder and then molded to obtain an electrode, and the electrode is used in an electochemical element.