公开(公告)号：US20140315104A1

公开(公告)日：2014-10-23

申请号：US14356728

申请日：2012-11-30

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Wenjuan Liu ,  Murali G. Theivanayagam ,  Koichi Numata ,  Ing-Feng Hu ,  David R. Wilson ,  Yiyong He

IPC: H01M4/36

CPC classification number: H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/60 ,  H01M10/0525 ,  Y02T10/7011

Abstract: Cathodes for lithium batteries contain a lithium-manganese cathodic material and from 0.5 to 20% by weight of lithium oxalate. Batteries containing the electrodes tend to exhibit high cycling capacities.

Abstract translation: 锂电池用阴极包含锂锰阴极材料和0.5〜20重量％的草酸锂。 含有电极的电池往往表现出高的循环能力。

公开(公告)号：US20170309963A1

公开(公告)日：2017-10-26

申请号：US15521247

申请日：2015-11-06

Applicant: Dow Global Technologies LLC

Inventor： Wenjuan Liu ,  Hideaki Maeda ,  Koichi Numata ,  Jianxin Ma ,  Yuhua Kao ,  Murali Theivanayagam ,  Ing-Feng Hu

IPC: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2300/0034 ,  H01M2300/0037 ,  Y02T10/7011

Abstract: A battery electrolyte solution contains a lithium salt, diethyl carbonate and at least one of 4-fluoroethylene carbonate and ethylene carbonate. This battery electrolyte is highly stable even when used in batteries in which the cathode material has a high operating potential (such as 4.5V or more) relative to Li/Li+. Batteries containing this electrolyte solution therefore have excellent cycling stability.

公开(公告)号：US20160164092A1

公开(公告)日：2016-06-09

申请号：US14906166

申请日：2014-08-05

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Alan L. Stottlemyer ,  Koichi Numata ,  Shijing Xia ,  Hideaki Maeda ,  Mark L. Dreibelbis ,  Michael Gardner

IPC: H01M4/525 ,  H01M4/505

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/54 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  H01M4/505 ,  H01M2004/028

Abstract: A method of doping elements (particularly those that do not have stable divalent oxidation states) into lithium rich metal oxides useful in lithium ion batteries is comprised of the following steps. A dopant metal is dissolved in a liquid, which includes being present as a colloid, to form a solution. The solution is added to a particulate lithium rich metal oxide precursor while agitating said precursor to form a mixture. The solution is added in an amount that is at most that amount which would make the mixture a paste. The liquid is removed to form a doped lithium rich metal oxide precursor. A source of lithium is added. The doped lithium rich metal oxide precursor is heated to form the lithium rich metal oxide.

Abstract translation: 将用于锂离子电池的富锂金属氧化物中的元素（特别是那些不具有稳定的二价氧化态的元素）掺杂的方法包括以下步骤。 掺杂剂金属溶解在液体中，其包括作为胶体存在，形成溶液。 将溶液加入到富含微量的富锂金属氧化物前体中，同时搅拌所述前体以形成混合物。 该溶液的添加量最多是使混合物成糊状的量。 除去液体以形成掺杂的富锂金属氧化物前体。 添加锂的来源。 掺杂的富锂金属氧化物前体被加热以形成富锂金属氧化物。

公开(公告)号：US20140247016A1

公开(公告)日：2014-09-04

申请号：US14190194

申请日：2014-02-26

Applicant: Dow Global Technologies LLC

Inventor： Alan L. Stottlemyer ,  Hideaki Maeda ,  Koichi Numata

IPC: H01M10/44 ,  H01M10/0525

CPC classification number: H01M10/446 ,  H01M10/0525 ,  Y02T10/7011

Abstract: A method for activating lithium ion batteries related to the initial formation cycle (initial battery break in prior to use) is used to improve battery performance. The method involves charging the battery for the first time after being fabricated, to an initial voltage Vi that is above 4.25 Volts vs Li/Li+, but less than 5 Volts. The battery is discharged to a base voltage Vb that is from 4.15 to 4.25 Volts and held at Vb for a period of time that is at least one minute to at most several weeks. The battery is then charged to a final voltage Vf that is greater than Vb. The batteries activated by the method may have one or more improved properties such as longer cycle life, greater capacity at higher charge/discharge rates or consistent performance from battery to battery.

Abstract translation: 使用与初始形成循环（使用前的初始电池断开）相关的锂离子电池的激活方法来提高电池性能。 该方法包括在制造之后首次将电池充电到高于4.25伏特的Li / Li +但小于5伏特的初始电压Vi。 将电池放电至基本电压Vb为4.15〜4.25V，并将其保持在Vb至少1分钟至最多数周的时间。 然后将电池充电至大于Vb的最终电压Vf。 通过该方法激活的电池可以具有一个或多个改进的性质，例如更长的循环寿命，更高的充电/放电速率下的容量或者从电池到电池的一致的性能。