公开(公告)号：US10930927B2

公开(公告)日：2021-02-23

申请号：US15970144

申请日：2018-05-03

申请人： Samsung Electronics Co., Ltd. ,  The Regents of the University of California ,  Massachusetts Institute of Technology

发明人： Lincoln Miara ,  Yan Wang ,  Tomoyuki Tsujimura ,  Yuichi Aihara ,  William Richards ,  Gerbrand Ceder

IPC分类号： H01M4/36 ,  H01M4/505 ,  H01M4/58 ,  H01M4/587 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/058 ,  C01G53/00 ,  C01B25/45 ,  C01B35/12 ,  C01D15/04 ,  H01M4/525 ,  H01M4/131 ,  H01M4/02

摘要： A positive electrode active material includes a core and a coating disposed on at least a portion of a surface of the core. The core includes a lithium metal oxide, a lithium metal phosphate, or a combination thereof. The coating includes a compound according to the formula LimM1nXp, wherein M1, X, m, n and p are as defined herein. Also, an electrochemical cell including the positive electrode active material, and methods for the manufacture of the positive electrode active material and the electrochemical cell.

公开(公告)号：US10978706B2

公开(公告)日：2021-04-13

申请号：US16134615

申请日：2018-09-18

申请人： The Regents of the University of California ,  Massachusetts Institute Of Technology

发明人： Gerbrand Ceder ,  HuiWen Ji ,  Zhengyan Lun ,  William Richards ,  Daniil Kitchaev

IPC分类号： H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M10/052 ,  C01G45/00 ,  C01G39/00 ,  C01G51/00 ,  C01G53/00 ,  C01G49/00 ,  C01G45/12 ,  H01M4/02

摘要： A disordered rocksalt lithium metal oxide and oxyfluoride as in manganese-vanadium oxides and oxyfluorides well suited for use in high capacity lithium-ion battery electrodes such as those found in lithium-ion rechargeable batteries. A lithium metal oxide or oxyfluoride example is one having a general formula: LixM′aM″bO2-yFy, with the lithium metal oxide or oxyfluoride having a cation-disordered rocksalt structure of one of (a) or (b), with (a) 1.09≤x≤1.35, 0.1≤a≤0.7, 0.1≤b≤0.7, and 0≤y≤0.7; M′ is a low valent transition metal and M″ is a high-valent transition metal; and (b) 1.1≤x≤1.33, 0.1≤a≤0.41, 0.39≤b≤0.67, and 0≤y≤0.3; M′ is Mn; and M″ is V or Mo. The oxides or oxyfluorides balance accessible Li capacity and transition metal capacity. An immediate application example is for high energy density Li-cathode battery materials, where the cathode energy is a key limiting factor to overall performance. The second structure (b) is optimized for maximal accessible Li capacity.

公开(公告)号：US20190140265A1

公开(公告)日：2019-05-09

申请号：US15970144

申请日：2018-05-03

申请人： Samsung Electronics Co., Ltd. ,  The Regents of the University of California ,  Massachusetts Institute of Technology

发明人： Lincoln Miara ,  Yan Wang ,  Tomoyuki Tsujimura ,  Yuichi Aihara ,  William Richards ,  Gerbrand Ceder

IPC分类号： H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  H01M4/587 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/058 ,  C01G53/00 ,  C01B25/45 ,  C01B35/12 ,  C01D15/04

摘要： A positive electrode active material includes a core and a coating disposed on at least a portion of a surface of the core. The core includes a lithium metal oxide, a lithium metal phosphate, or a combination thereof. The coating includes a compound according to the formula LimM1nXp, wherein M1, X, m, n and p are as defined herein. Also, an electrochemical cell including the positive electrode active material, and methods for the manufacture of the positive electrode active material and the electrochemical cell.

公开(公告)号：US09904772B2

公开(公告)日：2018-02-27

申请号：US14536506

申请日：2014-11-07

申请人： Samsung Electronics Co., Ltd. ,  Massachusetts Institute of Technology

发明人： Lincoln J Miara ,  William Richards ,  Shyue Ping Ong ,  Yifei Mo ,  Gerbrand Ceder

IPC分类号： H01M10/42 ,  G06F19/00

CPC分类号： G06F19/704 ,  H01M10/42 ,  H01M2300/0065

摘要： Non-normal statistics applied to diffusivity calculations accelerate screening of ionic conductors for electrochemical devices such as electric storage batteries, fuel cells, and sensors. Displacements of atomic species within a crystalline structure for a candidate ionic conductor material are analyzed using a Skellam distribution optionally combined with Gaussian noise to calculate values for the standard deviation, upper error bound, and lower error bound for predicted values of diffusivity (D). When the predicted values of D have sufficient statistical precision, the diffusivity calculation is terminated and the calculated diffusivity is compared to a threshold value of diffusivity. When the threshold has been exceeded, the candidate ionic conductor may be listed as a preferred good conductor. When the calculated diffusivity fails to exceed the threshold, the material may be listed as a poor conductor and may be eliminated from further consideration.

公开(公告)号：US10446872B2

公开(公告)日：2019-10-15

申请号：US15226179

申请日：2016-08-02

申请人： Samsung Electronics Co., Ltd. ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

发明人： Gerbrand Ceder ,  Jaechul Kim ,  Lincoln Miara ,  William Richards ,  Tomoyuki Tsujimura ,  Yan Wang ,  Naoki Suzuki

IPC分类号： H01M10/0562 ,  H01M10/0525 ,  C01B25/14 ,  C01B17/22

摘要： A solid electrolyte material represented by Formula 1: L1+2x(M1)1−x(M2)(M3)4  Formula 1 wherein 0.25

公开(公告)号：US20170040637A1

公开(公告)日：2017-02-09

申请号：US15226179

申请日：2016-08-02

申请人： Samsung Electronics Co., Ltd. ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

发明人： Gerbrand CEDER ,  Jaechul Kim ,  Lincoln Miara ,  William Richards ,  Tomoyuki Tsujimura ,  Yan Wang ,  Naoki Suzuki

IPC分类号： H01M10/0562 ,  H01M10/0525

CPC分类号： H01M10/0562 ,  C01B17/22 ,  C01B25/14 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2300/0065 ,  Y02E60/122 ,  Y02T10/7011

摘要： A solid electrolyte material represented by Formula 1: L1+2x(M1)1-x(M2)(M3)4  Formula 1 wherein 0.25

公开(公告)号：US20150204809A1

公开(公告)日：2015-07-23

申请号：US14536506

申请日：2014-11-07

申请人： Samsung Electronics, Co. Ltd. ,  Massachusetts Institute of Technology

发明人： Lincoln J. Miara ,  William Richards ,  Shyue Ping Ong ,  Yifei Mo ,  Gerbrand Ceder

IPC分类号： G01N27/02

CPC分类号： G06F19/704 ,  H01M10/42 ,  H01M2300/0065

摘要： Non-normal statistics applied to diffusivity calculations accelerate screening of ionic conductors for electrochemical devices such as electric storage batteries, fuel cells, and sensors. Displacements of atomic species within a crystalline structure for a candidate ionic conductor material are analyzed using a Skellam distribution optionally combined with Gaussian noise to calculate values for the standard deviation, upper error bound, and lower error bound for predicted values of diffusivity (D). When the predicted values of D have sufficient statistical precision, the diffusivity calculation is terminated and the calculated diffusivity is compared to a threshold value of diffusivity. When the threshold has been exceeded, the candidate ionic conductor may be listed as a preferred good conductor. When the calculated diffusivity fails to exceed the threshold, the material may be listed as a poor conductor and may be eliminated from further consideration.

摘要翻译： 应用于扩散计算的非正态统计加速了电化学装置（如蓄电池，燃料电池和传感器）的离子导体的筛选。 使用可选地与高斯噪声组合的Skellam分布来分析用于候选离子导体材料的晶体结构内的原子物质的位移，以计算扩散系数（D）的标准偏差，上误差界限和下限误差界限的值。 当D的预测值具有足够的统计精度时，终止扩散计算，并将计算出的扩散系数与扩散系数的阈值进行比较。 当超过阈值时，可将候选离子导体列为优选导体。 当计算的扩散系数不能超过阈值时，材料可能被列为不良导体，并可能被进一步考虑。