SECONDARY PARTICLE AND LITHIUM BATTERY COMPRISING THE SAME

• Main Authors: LEE SO-RA, YU YONG-MI, JOO GYU-NAM, KIM DEOK-HYUN, SHIN CHANG-SU, LEE JONG-HEE, KIM TAE-SIG, KIM YOUNG-SU, KIM JAE MYUNG, TO GISHO, CHUNG GU-HYUN, KIM BEOM-KWON
• Format: Patent
• Language: English
• Published: 25.08.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a secondary particle and to provide a lithium battery comprising the same. SOLUTION: The secondary particle is formed by a set of primary particles having a structure in which n polycyclic nano sheets in which a ring formed by connecting six carbon atoms in a hexagonal shape is polymerized to each other and arrayed on the same plane are laminated along a direction perpendicular to the same plane, wherein n is an integer not less than 2 and not more than 100, a first carbon of the carbons of the n polycyclic nano sheets and a second carbon of the carbons of the n polycyclic nano sheets are selected so as to satisfy L1≥L2, and when the first carbon is located at the origin A (0, 0, 0) of a three-dimensional circular coordinate system having an x axis, a y axis, and a z axis, the second carbon has coordinates B (a, b, c) where a and b are independent of each other and not more than 10 μm and c is not more than 100 nm. COPYRIGHT: (C)2011,JPO&INPIT