公开(公告)号：US20220231286A1

公开(公告)日：2022-07-21

申请号：US17618332

申请日：2019-11-11

Applicant: Google LLC

Inventor： Taisup Hwang ,  Dookyoung Lee ,  Lei Cao

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/38

Abstract: Example embodiments relate to composite lithium-metal anodes for enhanced energy density and reduced charging times. One embodiment includes an electrode. The electrode includes a protective layer. The electrode also includes a current collecting layer. Further, the electrode includes an active layer disposed between the protective layer and the current collecting layer. The active layer includes a graphite layer. The active layer also includes a hard carbon layer. Further, the active layer includes a lithium-metal layer.

公开(公告)号：US20230327076A1

公开(公告)日：2023-10-12

申请号：US18008847

申请日：2021-12-17

Applicant: Google LLC

Inventor： Taisup Hwang ,  Ramesh C. Bhardwaj ,  Lei Cao ,  Dookyoung Lee ,  Qiang Luo

IPC: H01M4/133 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/38 ,  H01M4/62 ,  H01M4/525 ,  H01M10/0569 ,  H01M10/0567 ,  H01M4/131

CPC classification number: H01M4/133 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/386 ,  H01M4/622 ,  H01M4/525 ,  H01M4/625 ,  H01M10/0569 ,  H01M10/0567 ,  H01M4/131 ,  H01M2300/0034 ,  H01M2300/0042

Abstract: Composite lithium ion batteries having an anode with an anode collector and a composite anode material, a cathode with a cathode collector and a composite cathode material, a separator positioned between the anode and the cathode, and an electrolyte in contact with the anode and the cathode. Advantages of the composite lithium ion batteries include lower DC impedance, faster charging times, more reserve capacity between 3.0V and 2.5V, and an increased volumetric energy density relative to lithium ion batteries that do not include the described composite material electrodes.