公开(公告)号：US20200295359A1

公开(公告)日：2020-09-17

申请号：US16753486

申请日：2018-09-18

Applicant: SHOWA DENKO K.K. ,  UMICORE

Inventor： Yasunari OTSUKA ,  Nobuaki ISHII ,  Nicolas MARX ,  Stijn PUT

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/62

Abstract: A negative electrode material for lithium ion secondary batteries, including composite material particles containing nanosilicon particles having a 50% particle diameter (Dn50) of 5 to 100 nm in a number-based cumulative particle size distribution of primary particles, graphite particles and an amorphous carbon material; the composite material particles containing the nanosilicon particles at a content of 30 to 60 mass % or less, and the amorphous carbon material at a content of 30 to 60 mass % or less; the composite material particles having a 90% particle diameter (DV90) in the volume-based cumulative particle size distribution of 10.0 to 40.0 μm, a BET specific surface area of 1.0 to 5.0 m2/g, and an exothermic peak temperature in DTA measurement of 830° C. to 950° C. Also disclosed is a paste for negative electrodes, a negative electrode sheet, a lithium ion secondary battery and a method for manufacturing the negative electrode material.

公开(公告)号：US20210083271A1

公开(公告)日：2021-03-18

申请号：US16961291

申请日：2018-12-21

Applicant: Umicore

Inventor： Nicolas MARX ,  Stijn PUT ,  Jean-Sébastien BRIDEL

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525

Abstract: A composite powder for use in the negative electrode of a battery, whereby the composite powder comprises composite particles, whereby the composite particles comprise a matrix material and silicon, whereby the composite particles have a particle size distribution having a d10 and a d90, whereby over at least part of the size range from d10 to d90 the composite particles have a size-dependent silicon content. Preferably a finer fraction of the composite powder has an average particle size D1 and a silicon content S1 and a coarser fraction of the composite powder has an average particle size D2 and a silicon content S2, whereby a size dependence factor F is defined as follows F=(S2−S1)/(D2−D1), whereby the absolute value of the size dependence factor F is at least 0.04 wt % silicon/μm.

公开(公告)号：US20170244101A1

公开(公告)日：2017-08-24

申请号：US15454142

申请日：2017-03-09

Applicant: Umicore

Inventor： Stijn PUT ,  Jan GILLEIR ,  Kris DRIESEN ,  Jean-Sébastien BRIDEL ,  Nicolas MARX ,  Delphine LONGRIE ,  Dan V. GOIA ,  John I. NJAGI

IPC: H01M4/36 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/38

CPC classification number: H01M4/366 ,  H01M4/0404 ,  H01M4/0416 ,  H01M4/0428 ,  H01M4/0471 ,  H01M4/0492 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/386 ,  H01M4/483 ,  H01M4/62 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027

Abstract: This invention relates to a negative electrode material for lithium-ion batteries comprising silicon and having a chemically treated or coated surface influencing the zeta potential of the surface. The active material consists of particles or particles and wires comprising a core comprising silicon, wherein the particles have a positive zeta potential in an interval between pH 3.5 and 9.5, and preferably between pH 4 and 9.5. The core is either chemically treated with an amino-functional metal oxide, or the core is at least partly covered with OySiHx groups, with 1 y, or is covered by adsorbed inorganic nanoparticles or cationic multivalent metal ions or oxides.

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.

公开(公告)号：US20170346073A1

公开(公告)日：2017-11-30

申请号：US15538292

申请日：2015-10-15

Applicant: Umicore

Inventor： Stijn PUT ,  Dirk VAN GENECHTEN ,  Jan GILLEIR ,  Nicolas MARX

IPC: H01M4/134 ,  H01M4/36 ,  C01B32/00 ,  C01B33/02

CPC classification number: H01M4/134 ,  C01B32/00 ,  C01B33/02 ,  C01P2006/12 ,  C01P2006/14 ,  H01M4/362 ,  H01M4/386

Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 μm or less, or the silicon-based domains are not at all agglomerated into agglomerates.

公开(公告)号：US20220209223A1

公开(公告)日：2022-06-30

申请号：US17672785

申请日：2022-02-16

Applicant: Umicore ,  Showa Denko K.K.

Inventor： Stijn PUT ,  Dirk VAN GENECHTEN ,  Jan GILLEIR ,  Nicolas MARX ,  Arihiro MUTO ,  Nobuaki ISHII ,  Masataka TAKEUCHI

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/134 ,  C01B33/03 ,  C01B32/00 ,  C01B33/027 ,  H01M10/0525

Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby the matrix material is carbon or a material that can be thermally decomposed to carbon, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 μm or less, or the silicon-based domains are not at all agglomerated into agglomerates.

公开(公告)号：US20210036315A1

公开(公告)日：2021-02-04

申请号：US16967248

申请日：2019-02-05

Applicant: Umicore

Inventor： Stijn PUT ,  Nicolas MARX ,  Jan GILLEIR ,  Daniël NELIS

IPC: H01M4/38 ,  H01M4/134 ,  H01M4/62 ,  H01M10/0525

Abstract: Silicon-based powder for use in the negative electrode of a battery, whereby the silicon-based powder comprises silicon-based particles, whereby the silicon-based particles have a number-based particle size distribution having a d50, whereby the particle size of a particle is considered to be the largest dimension of said particle, whereby less than 8.0% of the particles have a size which is larger than twice the d50. Such a silicon based powder may be embedded in a matrix to form an active material powder. Preferably d50 10 nm. The cycle efficiency of a negative electrode of a battery, made using such a powder, is much improved.

公开(公告)号：US20190386300A1

公开(公告)日：2019-12-19

申请号：US16437199

申请日：2019-06-11

Applicant: Umicore

Inventor： Nicolas MARX ,  Stijn PUT ,  Jean-Sébastien BRIDEL ,  Boaz MOEREMANS

IPC: H01M4/38 ,  C01B33/02

Abstract: An active material powder for use in a negative electrode of a battery, wherein the active material powder comprises active material particles, wherein the active material particles comprise silicon-based particles, wherein when said active material powder is crossed by a plane, then at least 65% of the discrete cross-sections of the silicon-based particles included in that plane, satisfy optimized conditions of shape and size, allowing the battery containing such an active material powder to achieve a superior cycle life and a production method of such an active material powder.

公开(公告)号：US20180083275A1

公开(公告)日：2018-03-22

申请号：US15569402

申请日：2016-04-26

Applicant: Umicore

Inventor： Stijn PUT ,  Dirk VAN GENECHTEN ,  Nicolas MARX

IPC: H01M4/38 ,  H01M4/36 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/04

CPC classification number: H01M4/386 ,  H01M4/0471 ,  H01M4/364 ,  H01M4/583 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027

Abstract: Composite powder for use in an anode of a lithium ion battery, whereby the particles of the composite powder comprise a carbon matrix material and silicon particles embedded in this matrix material, characterized in that the composite powder further comprises silicon carbide.

公开(公告)号：US20180013137A1

公开(公告)日：2018-01-11

申请号：US15538698

申请日：2015-10-15

Applicant: Umicore ,  Showa Denko K.K.

Inventor： Stijn PUT ,  Dirk VAN GENECHTEN ,  Jan GILLEIR ,  Nicolas MARX ,  Arihiro MUTO ,  Nobuaki ISHII ,  Masataka TAKEUCHI

IPC: H01M4/36 ,  H01M4/38 ,  C01B33/027 ,  H01M10/0525

CPC classification number: H01M4/364 ,  C01B32/00 ,  C01B33/027 ,  C01B33/03 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/14 ,  H01M4/134 ,  H01M4/362 ,  H01M4/386 ,  H01M10/0525

Abstract: Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby the matrix material is carbon or a material that can be thermally decomposed to carbon, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 μm or less, or the silicon-based domains are not at all agglomerated into agglomerates.