公开(公告)号：US20110223491A1

公开(公告)日：2011-09-15

申请号：US13128573

申请日：2009-12-22

Applicant: Chaqing Xu ,  Zhanfeng Jiang ,  Lianchi Jiang ,  Hongyan Li ,  Yunbo Ye

Inventor： Chaqing Xu ,  Zhanfeng Jiang ,  Lianchi Jiang ,  Hongyan Li ,  Yunbo Ye

IPC: H01M10/02 ,  H01M4/485 ,  C01G23/04 ,  B32B5/16 ,  B82Y99/00

CPC classification number: C01G23/005 ,  B82Y30/00 ,  C01G23/047 ,  C01P2004/03 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/40 ,  C01P2006/80 ,  H01M4/043 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/625 ,  H01M10/0525 ,  Y10T428/2982

Abstract: Provided is a composite material having spinel structured lithium titanate, wherein the lithium titanate has a microcrystalline grain diameter of about 36-43 nm and an average particle diameter of about 1-3 μm. The composite material comprises a small amount of TiO2 and Li2—TiO3 impurity phases. Also provided is a method for preparing the composite material, which comprises the steps: mixing titanium dioxide particles and soluble lithium sources with water to form a mixture, removing water and then sintering the mixture in an inert gas at a constant temperature, and cooling the sintered mixture, wherein the titanium dioxide particles have D50 of not greater than 0.4 μm and D95 of less than 1 μm. Further provided are a negative active substance comprising the composite material and a lithium ion secondary battery containing the negative active substance.

Abstract translation: 提供了一种具有尖晶石结构的钛酸锂的复合材料，其中钛酸锂的微晶粒径为约36-43nm，平均粒径为约1-3μm。 复合材料包含少量的TiO 2和Li 2 -TiO 3杂质相。 还提供了一种制备复合材料的方法，其包括以下步骤：将二氧化钛颗粒和可溶性锂源与水混合以形成混合物，除去水，然后在恒定温度下在惰性气体中烧结混合物，并冷却 烧结混合物，其中二氧化钛颗粒的D50不大于0.4μm，D95小于1μm。 还提供了包含复合材料的负极活性物质和含有负极活性物质的锂离子二次电池。

公开(公告)号：US08153032B2

公开(公告)日：2012-04-10

申请号：US12436347

申请日：2009-05-06

Applicant: WenQiang Xia ,  ChaQing Xu ,  ZhanFeng Jiang

Inventor： WenQiang Xia ,  ChaQing Xu ,  ZhanFeng Jiang

IPC: H01B1/02

CPC classification number: C01G53/42 ,  C01G45/02 ,  C01G45/1228 ,  C01G51/00 ,  C01G51/50 ,  C01G53/00 ,  C01G53/006 ,  C01G53/04 ,  C01G53/50 ,  C01P2002/54 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/40

Abstract: Transition metal hydroxide and oxide, method of producing the same, and cathode material containing the same are disclosed. One method includes coupling an alkaline solution to a transition metal salt solution under an inert gas atmosphere, whereby the alkaline solution includes an additive. A transition metal oxide may be prepared by heating the transition metal hydroxide under an oxygen gas atmosphere. Cathode materials for lithium-ion batteries may be prepared incorporating the transition metal hydroxide and oxide embodiments disclosed herein.

Abstract translation: 公开了过渡金属氢氧化物和氧化物，其制备方法和含有它们的阴极材料。 一种方法包括在惰性气体气氛下将碱性溶液偶联到过渡金属盐溶液，由此碱性溶液包括添加剂。 可以通过在氧气气氛下加热过渡金属氢氧化物来制备过渡金属氧化物。 可以制备用于锂离子电池的阴极材料，其结合本文公开的过渡金属氢氧化物和氧化物实施例。

公开(公告)号：US20100102270A1

公开(公告)日：2010-04-29

申请号：US12593424

申请日：2008-04-01

Applicant: Wenwen Jia ,  Chaqing Xu ,  Xiaoyong Chen

Inventor： Wenwen Jia ,  Chaqing Xu ,  Xiaoyong Chen

IPC: H01M4/88

CPC classification number: H01M4/1397 ,  C01B25/37 ,  C01B25/45 ,  H01M4/136 ,  H01M4/5825 ,  H01M10/052 ,  Y02P20/133 ,  Y02T10/7011

Abstract: Disclosed herein is a method for preparing lithium iron phosphate as a positive electrode active material for a lithium ion secondary battery comprising drying and sintering a mixture containing a lithium source, ferric oxide, phosphoric acid, a carbon source, and a solvent, in which the solvent is water and/or water soluble organic solvent. The lithium iron phosphate prepared by the inventive method has small particle size and uniform particle size distribution, and the battery prepared from the lithium iron phosphate has high initial discharge specific capacity, and good large-current discharge property and cycle performance.

Abstract translation: 本发明公开了一种制备磷酸铁锂作为锂离子二次电池用正极活性物质的方法，该方法包括干燥和烧结含有锂源，氧化铁，磷酸，碳源和溶剂的混合物，其中 溶剂是水和/或水溶性有机溶剂。 本发明方法制备的磷酸铁锂粒径小，粒度分布均匀，由磷酸铁锂制备的电池具有较高的初始放电比容量，良好的大电流放电性能和循环性能。

公开(公告)号：US20090302283A1

公开(公告)日：2009-12-10

申请号：US12436347

申请日：2009-05-06

Applicant: WenQiang XIA ,  ChaQing XU ,  ZhanFeng JIANG

Inventor： WenQiang XIA ,  ChaQing XU ,  ZhanFeng JIANG

IPC: H01B1/08

CPC classification number: C01G53/42 ,  C01G45/02 ,  C01G45/1228 ,  C01G51/00 ,  C01G51/50 ,  C01G53/00 ,  C01G53/006 ,  C01G53/04 ,  C01G53/50 ,  C01P2002/54 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/40

Abstract: Transition metal hydroxide and oxide, method of producing the same, and cathode material containing the same are disclosed. One method includes coupling an alkaline solution to a transition metal salt solution under an inert gas atmosphere, whereby the alkaline solution includes an additive. A transition metal oxide may be prepared by heating the transition metal hydroxide under an oxygen gas atmosphere. Cathode materials for lithium-ion batteries may be prepared incorporating the transition metal hydroxide and oxide embodiments disclosed herein.

Abstract translation: 公开了过渡金属氢氧化物和氧化物，其制备方法和含有它们的阴极材料。 一种方法包括在惰性气体气氛下将碱性溶液偶联到过渡金属盐溶液，由此碱性溶液包括添加剂。 可以通过在氧气气氛下加热过渡金属氢氧化物来制备过渡金属氧化物。 可以制备用于锂离子电池的阴极材料，其结合本文公开的过渡金属氢氧化物和氧化物实施例。