ANODE ACTIVE MATERIAL COMPRISING MULTI LAYERED METAL NANOTUBE, ANODE AND LITHIUM BATTERY COMPRISING THE MATERIAL, AND PREPARATION METHOD THEREOF
摘要
PURPOSE: A negative electrode active material is provided to improve initial charging and discharging efficiency, capacity maintenance, and high voltage properties of a high capacity lithium battery by using multi-layered nanotubes. CONSTITUTION: A negative electrode active material comprises: an inner layer which comprises an inner surface of metal nanotubes, and an outer layer which comprises an outer surface of the metal nanotubes. The inner layer comprises a first metal of which an atomic number is 13 or more. The outer layer comprises multilayered metal nanotubes which comprise a second metal different with the first metal. The second metal has a lower resistivity than the resistivity of the first metal. The diffusivity of lithium ions is high and volume expansion at charging is low. [Reference numerals] (AA) Metal oxide nanorod; (BB) Conductive substrate; (CC) First metal coating; (DD) Metal oxide template etching; (EE) First metal nanotube; (FF) Second metal coating; (GG) First metal; (HH) Second metal; (II) Inner and outer layer structures
申请公布号
KR20130010733(A)
申请公布日期
2013.01.29
申请号
KR20110071549
申请日期
2011.07.19
申请人
SAMSUNG ELECTRONICS CO., LTD.;IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
发明人
CHOI, JAE MAN;HWANG, SEUNG SIK;KWON, MOON SEOK;SONG, MIN SANG;SHON, JEONG KUK;KIM, MYUNG HOON;KIM, HAN SU;PAIK, UN GYU;SONG, TAE SEUP