公开(公告)号：US20240317585A1

公开(公告)日：2024-09-26

申请号：US18574398

申请日：2022-06-30

Applicant: Umicore

Inventor： Kun FENG ,  Jean-Sébastien BRIDEL ,  Boaz MOEREMANS

IPC: C01B32/05

CPC classification number: C01B32/05 ,  C01P2002/08 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/40 ,  C01P2006/80

Abstract: A powder for use in a negative electrode of a battery, the powder comprising particles, the particles comprising a matrix material and silicon-based particles dispersed in said matrix material, the powder having a total specific volume of open porosity at least equal to 0.005 cm3/g and at most equal to 0.05 cm3/g, a total specific volume of closed porosity at least equal to 0.01 cm3/g and at most equal to 0.1 cm3/g, and a ratio of the total specific volume of open porosity over the total specific volume of closed porosity at least equal to 0.01 and at most equal to 0.99.

公开(公告)号：US20230207781A1

公开(公告)日：2023-06-29

申请号：US17996515

申请日：2021-04-13

Applicant: UMICORE

Inventor： Kun FENG ,  Boaz MOEREMANS ,  Jean-Sébastien BRIDEL

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/38

CPC classification number: H01M4/364 ,  H01M4/587 ,  H01M4/386 ,  H01M2004/027

Abstract: A powder for use in a negative electrode of a battery, comprising a mixture of a first number-based fraction of particles comprising a carbonaceous matrix material and silicon-based particles dispersed therein, and a second number-based fraction of particles, comprising Si-free carbonaceous particles comprising graphitic domains having a mean size of at least 10 nm and at most 45 nm, as determined by the Scherrer equation applied to the powder's X-ray diffraction peak assigned to C(002) having an intensity IC with its maximum at 2θCu between 26° and 27°.

公开(公告)号：US20220352493A1

公开(公告)日：2022-11-03

申请号：US17767107

申请日：2020-10-05

Applicant: UMICORE

Inventor： Boaz MOEREMANS ,  Kun FENG ,  Michal TULODZIECKI ,  Jean-Sébastien BRIDEL ,  Nicolas MARX ,  Stijn PUT

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395

Abstract: A powder for use in a negative electrode of a battery, said powder comprising particles, wherein the particles comprise a carbonaceous matrix material and silicon-based domains dispersed in the carbonaceous matrix material, wherein the particles further comprise pores wherein at least 1000 cross-sections of pores comprised in a cross-section of the powder satisfy optimized conditions of size and size distribution, allowing the battery containing such a powder to achieve a superior cycle life and a production method of such a powder.