公开(公告)号：US09590240B2

公开(公告)日：2017-03-07

申请号：US14250369

申请日：2014-04-10

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chenmin Liu ,  Lifeng Cai ,  Shing Yan Choi

IPC: C01G23/00 ,  H01M4/36 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  C01G23/005 ,  H01M4/485 ,  H01M10/0525 ,  H01M2004/027

Abstract: The present invention is to provide a lithium titanate (LTO) material for a lithium ion battery. The LTO material has hierarchical micro/nano architecture, and comprises a plurality of micron-sized secondary LTO spheres, and a plurality of pores incorporated with metal formed by a metal dopant. Each of the micron-sized secondary LTO spheres comprises a plurality of nano-sized primary LTO particles. A plurality of the nano-sized primary LTO particles is encapsulated by a non-metal layer formed by a non-metal dopant. The LTO material of the present invention has high electrical conductivity for increasing the capacity at high charging/discharging rates, and energy storage capacity.

Abstract translation: 本发明提供一种用于锂离子电池的钛酸锂（LTO）材料。 LTO材料具有分级的微/纳米结构，并且包括多个微米级的次级LTO球体和与由金属掺杂剂形成的金属结合的多个孔。 每个微米尺寸的次级LTO球体包括多个纳米尺寸的主LTO颗粒。 多个纳米尺寸的初级LTO颗粒被非金属掺杂剂形成的非金属层封装。 本发明的LTO材料具有高电导率，用于增加高充电/放电速率下的容量和储能能力。