Lithium titanate crystal structure, composite of lithium titanate crystal structure and carbon, method of production thereof, and electrode and electrochemical element employing said composite

摘要

Highly dispersed lithium titanate crystal structures having a thickness of few atomic layers level and the two-dimensional surface in a plate form are supported on carbon nanofiber (CNF). The lithium titanate crystal structure precursors and CNF that supports these are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The mass ratio between the lithium titanate crystal structure and carbon nanofiber is preferably between 75:25 and 85:15. The carbon nanofiber preferably has an external diameter of 10-30 nm and an external specific surface area of 150-350 cm2/g. This composite is mixed with a binder and then molded to obtain an electrode, and this electrode is employed for an electrochemical element.

主权项

1. A composite of lithium titanate crystal structure and carbon, wherein,
the lithium titanate crystal structure having a thickness of 1 nm or less at 2-5 atomic layers level and having one side of the two-dimensional surface spread in a plate form at 5-100 nm, the dispersed lithium titanate crystal structure is supported on carbon, and the mass ratio between the lithium titanate crystal structure and carbon is between 75:25 and 85:15.