公开(公告)号：GB2587585B

公开(公告)日：2021-08-25

申请号：GB202100140

申请日：2019-06-18

Applicant: IBM

Inventor： JOEL PEREIRA DE SOUZA ,  JOHN COLLINS ,  DEVENDRA SADANA ,  STEPHEN W BEDELL ,  JOHN OTT ,  MARINUS JOHANNES PETRUS HOPSTAKEN

IPC: H01M4/1395 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0585

Abstract: Rechargeable lithium-ion batteries that have a high-capacity are provided. The lithium-ion batteries contain an anode structure that is of unitary construction and includes a non-porous region and a porous region including a top porous layer (Porous Region 1) having a first thickness and a first porosity, and a bottom porous layer (Porous Region 2) located beneath the top porous layer and forming an interface with the non-porous region. At least an upper portion of the non-porous region and the entirety of the porous region are composed of silicon, and the bottom porous layer has a second thickness that is greater than the first thickness, and a second porosity that is greater than the first porosity.

公开(公告)号：GB2587585A

公开(公告)日：2021-03-31

申请号：GB202100140

申请日：2019-06-18

Applicant: IBM

Inventor： JOEL PEREIRA DE SOUZA ,  JOHN COLLINS ,  DEVENDRA SADANA ,  STEPHEN W BEDELL ,  JOHN OTT ,  MARINUS JOHANNES PETRUS HOPSTAKEN

IPC: H01M4/1395 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0585

Abstract: Rechargeable lithium-ion batteries that have a high-capacity are provided. The lithium-ion batteries contain an anode structure that is of unitary construction and includes a non-porous region and a porous region including a top porous layer (Porous Region 1) having a first thickness and a first porosity, and a bottom porous layer (Porous Region 2) located beneath the top porous layer and forming an interface with the non-porous region. At least an upper portion of the non-porous region and the entirety of the porous region are composed of silicon, and the bottom porous layer has a second thickness that is greater than the first thickness, and a second porosity that is greater than the first porosity.