公开(公告)号：US20160020456A1

公开(公告)日：2016-01-21

申请号：US14395451

申请日：2013-03-04

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junho SONG ,  Woosuk CHO ,  Dongjin KIM ,  Yeonhee KIM ,  Youngjun KIM

IPC: H01M4/131 ,  C01G51/00 ,  H01M4/04 ,  H01M4/525

CPC classification number: H01M4/131 ,  C01G51/04 ,  C01G51/42 ,  C01P2002/52 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/0471 ,  H01M4/0497 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/028

Abstract: The present invention relates to a cathode material for a nonaqueous lithium secondary battery using spherical cobalt hydroxide to inhibit the structural collapse of a final cathode material at a high voltage by preparing spherical cobalt hydroxide in which a dissimilar metal is uniformly substituted by using a precipitation reaction in a liquid phase, thereby improving lifetime characteristics even under high voltage charge/discharge conditions of 4.5 V. According to the present invention, it is possible to prepare spherical cobalt hydroxide having a particle size of 15-30 μm by precipitating a cobalt material, a hydroxyl group material, a dissimilar metal material for substitution and an amine-based material so as to have a composition represented by Co1-xMx(OH)2 (0.00≦x≦0.10, M=Al, Mg, Ti, and the like). Also, it is possible to prepare spherical cobalt oxide having a particle size of 10-25 μm by heat-treating the prepared cobalt hydroxide at 500-800° C.

Abstract translation: 本发明涉及一种使用球形氢氧化钴的非水锂二次电池的阴极材料，其通过制备通过使用沉淀反应均匀地取代异氰酸金属的球形氢氧化钴来抑制高电压下的最终正极材料的结构崩溃 在液相中，即使在4.5V的高电压充放电条件下也能够提高寿命特性。根据本发明，可以通过使钴材料析出来制备粒径为15〜30μm的球形氢氧化钴， 羟基基团材料，用于取代的异种金属材料和胺类材料，以具有由Co1-xMx（OH）2（0.00＆amp; NlE; x＆amp; NlE; 0.10，M = Al，Mg，Ti和 喜欢）。 此外，可以通过在500-800℃热处理制备的氢氧化钴来制备粒径为10-25μm的球形氧化钴。

公开(公告)号：US20160372739A1

公开(公告)日：2016-12-22

申请号：US15105474

申请日：2014-10-29

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junho SONG ,  Youngjun KIM ,  Jeomsoo KIM ,  Woosuk CHO ,  Sanggil WOO ,  Taeeun YIM ,  Kyungjun LEE ,  Yeonggwang PARK

IPC: H01M4/1397 ,  H01M4/04 ,  H01M4/136 ,  H01M4/525 ,  H01M4/48 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/58

Abstract: The present invention relates to a non-aqueous cathode material for lithium secondary batteries using a spherical transition metal complex carbonate, and a method for preparing same. According to the present invention, since the surface of a spherical transition metal complex carbonate, which is prepared by using a cobalt material, nickel material, manganese material, carboxyl group material, and ammonia material, is coated with titanium dioxide. In addition, by mixing the prepared, surface-coated transition metal complex carbonate with a lithium material and heat-treating the resultant material, it is possible to prepare a spherical Li-rich cathode material having a primary particle size of 200 nm or more, and a 0.1C capacity of 250 mAh/g or more, and capable of implementing 96% or more of the initial capacity in a full cell after charging and discharging 60 times.

Abstract translation: 本发明涉及一种使用球形过渡金属络合物碳酸盐的锂二次电池用非水系阴极材料及其制备方法。 根据本发明，通过使用钴材料，镍材料，锰材料，羧基材料和氨材料制备的球形过渡金属络合物碳酸盐的表面涂覆有二氧化钛。 此外，通过将制备的表面被覆的过渡金属络合物碳酸盐与锂材料混合并对所得材料进行热处理，可以制备一次粒径为200nm以上的球形Li-浓阴极材料， 0.1mA容量为250mAh / g以上，并且在充放电60次后能够在全电池中实现96％以上的初始容量。