公开(公告)号：US12119482B2

公开(公告)日：2024-10-15

申请号：US17322181

申请日：2021-05-17

申请人： NANOGRAF CORPORATION

发明人： Cary Michael Hayner ,  Aaron Yost ,  Kathryn Hicks ,  Seonbaek Ha ,  Pitawat Mahawattanangul ,  Joshua J. Lau

IPC分类号： H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/58 ,  H01M4/583 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/382 ,  H01M4/386 ,  H01M4/483 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027

摘要： Active material composite particles, an electrode including the composite particles, a lithium ion secondary battery including the electrode, and method of forming the same, in which the composite particles each include a core particle including an alkali metal or an alkali earth metal silicate, and a coating disposed on the surface of the core particle. The coating includes turbostratic carbon having a Raman spectrum having: a D band having a peak intensity (ID) at wave number between 1330 cm−1 and 1360 cm−1; a G band having a peak intensity (IG) at wave number between 1580 cm−1 and 1600 cm−1; and a 2D band having a peak intensity (I2D) at wave number between 2650 cm−1 and 2750 cm−1, wherein a ratio of ID/IG ranges from greater than zero to about 1.1, and a ratio of I2D/IG ranges from about 0.4 to about 2.

公开(公告)号：US11929494B2

公开(公告)日：2024-03-12

申请号：US18152444

申请日：2023-01-10

申请人： NANOGRAF CORPORATION

发明人： Joshua J. Lau ,  Aaron Yost ,  James McKinney ,  Cary Michael Hayner ,  Jack Cavanaugh ,  Seonbaek Ha

IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/38 ,  H01M4/48 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/366 ,  H01M4/0402 ,  H01M4/386 ,  H01M4/48 ,  H01M4/5815 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/027

摘要： An electrode material for a lithium ion secondary battery and method of forming the same, the electrode material including composite particles, each composite particle including: a primary particle including an electrochemically active material; and an envelope disposed on the surface of the primary particle. The envelope includes turbostratic carbon having a Raman spectrum having: a D band having a peak intensity (ID) at wave number between 1330 cm-1 and 1360 cm-1; a G band having a peak intensity (IG) at wave number between 1530 cm-1 and 1580 cm-1; and a 2D band having a peak intensity (I2D) at wave number between 2650 cm-1 and 2750 cm-1. In one embodiment, a ratio of ID/IG ranges from greater than zero to about 1.1, and a ratio of I2D/IG ranges from about 0.4 to about 2.

公开(公告)号：US11588150B2

公开(公告)日：2023-02-21

申请号：US16876915

申请日：2020-05-18

申请人： NANOGRAF CORPORATION

发明人： Joshua J. Lau ,  Aaron Yost ,  James McKinney ,  Cary Michael Hayner ,  Jack Cavanaugh ,  Seonbaek Ha

IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/02

摘要： An electrode material for a lithium ion secondary battery and method of forming the same, the electrode material including composite particles, each composite particle including: a primary particle including an electrochemically active material; and an envelope disposed on the surface of the primary particle. The envelope includes turbostratic carbon having a Raman spectrum having: a D band having a peak intensity (ID) at wave number between 1330 cm−1 and 1360 cm−1; a G band having a peak intensity (IG) at wave number between 1530 cm−1 and 1580 cm−1; and a 2D band having a peak intensity (I2D) at wave number between 2650 cm−1 and 2750 cm−1. In one embodiment, a ratio of ID/IG ranges from greater than zero to about 1.1, and a ratio of I2D/IG ranges from about 0.4 to about 2.