公开(公告)号：US20210242500A1

公开(公告)日：2021-08-05

申请号：US16774003

申请日：2020-01-28

申请人： StoreDot Ltd.

发明人： Nir KEDEM ,  Liron AMIR ,  Evgenia Liel (Jeny) KUKS ,  Ido HERZOG ,  Shirel COHEN ,  Rony SCHWARZ ,  Eran SELLA

IPC分类号： H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/38

摘要： Lithium ion batteries and electrolytes therefor are provided, which include electrolyte additives having dithioester functional group(s) that stabilize the SEI (solid-electrolyte interface) at the surfaces of the anode material particles, and/or stabilize the CEI (cathode electrolyte interface) at the surfaces of the cathode material particles, and/or act as oxygen scavengers to prevent cell degradation. The electrolyte additives having dithioester functional group(s) may function as polymerization controlling and/or chain transfer agents that regulate the level of polymerization of other electrolyte components, such as VC (vinyl carbonate) and improve the formation and operation of the batteries. The lithium ion batteries may have metalloid-based anodes—including mostly Si, Ge and/or Sn as anode active material particles.

公开(公告)号：US20220285671A1

公开(公告)日：2022-09-08

申请号：US17652949

申请日：2022-03-01

申请人： STOREDOT LTD.

发明人： Shirel COHEN

IPC分类号： H01M4/36 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/485

摘要： A manufacturing method related to a slurry, the method may include preparing a slurry that comprises anode active material, one or more binders and one or more additives, wherein the anode active material are partially coated anode active material that are partially coated with lithium sulfate

公开(公告)号：US20210234197A1

公开(公告)日：2021-07-29

申请号：US16774004

申请日：2020-01-28

申请人： StoreDot Ltd.

发明人： Ido HERZOG ,  Sanaa MUSA ,  Shirel COHEN ,  Rony SCHWARZ ,  Eran SELLA

IPC分类号： H01M10/0567 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/485 ,  H01M10/0569

摘要： Lithium ion batteries and electrolytes therefor are provided, which include electrolyte additives having dithioester functional group(s) that stabilize the SEI (solid-electrolyte interface) at the surfaces of the anode material particles, and/or stabilize the CEI (cathode electrolyte interface) at the surfaces of the cathode material particles, and/or act as oxygen scavengers to prevent cell degradation. The electrolyte additives having dithioester functional group(s) may function as polymerization controlling and/or chain transfer agents that regulate the level of polymerization of other electrolyte components, such as VC (vinyl carbonate) and improve the formation and operation of the batteries. The lithium ion batteries may have metalloid-based anodes—including mostly Si, Ge and/or Sn as anode active material particles.

公开(公告)号：US20210210741A1

公开(公告)日：2021-07-08

申请号：US16735737

申请日：2020-01-07

申请人： Storedot Ltd.

发明人： Ivgeni SHTERENBERG ,  Eran SELLA ,  Eynat MATZNER ,  Shirel COHEN ,  Hadar MAZOR SHAFIR ,  Daniel ARONOV

IPC分类号： H01M4/04 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/02

摘要： Prelithiation methods and fast charging lithium ion cell are provided, which combine high energy density and high power density. Several structural and chemical modifications are disclosed to enable combination of features that achieve both goals simultaneously in fast charging cells having long cycling lifetime. The cells have anodes with high content of Si, Ge and/or Sn as principal anode material, and cathodes providing a relatively low C/A ratio, with the anodes being prelithiated to have a high lithium content, provided by a prelithiation algorithm. Disclosed algorithms determine lithium content achieved through prelithiation by optimizing the electrolyte to increase cycling lifetime, adjusting energy density with respect to other cell parameters, and possibly reducing the C/A ratio to maintain the required cycling lifetime.