公开(公告)号：US20240002239A1

公开(公告)日：2024-01-04

申请号：US18253456

申请日：2021-12-10

Applicant: Berzelius (Nanjing) Co., Ltd. ,  Berzelius (Hefei) Co., Ltd.

Inventor： Zhe LI ,  Hebao ZHANG ,  Shu LUO ,  Daosong ZHA ,  Cen WANG

IPC: C01B33/12

CPC classification number: C01B33/12 ,  C01P2006/40 ,  C01P2002/54 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2004/80

Abstract: A silicon-based particle with a core-shell structure, a method for preparing the same, an anode material, an electrode and a battery. The silicon-based particle includes: a core comprising an oxygen-containing silicon-based compound matrix and nano-silicon grains, a molar ratio of oxygen to silicon in the core being 0.5-1.5; a silicon carbide layer covering the core; and a carbon layer covering the silicon carbide layer. The silicon-based particle is used in batteries, and has the characteristics of low expansion rate, long cycle life, high capacity and high coulombic efficiency.

公开(公告)号：US20250006923A1

公开(公告)日：2025-01-02

申请号：US18712877

申请日：2022-11-16

Applicant: Berzelius (Nanjing) Co., Ltd. ,  Berzelius (Hefei) Co., Ltd.

Inventor： Shu LUO ,  Hebao ZHANG ,  Daosong ZHA ,  Yunyun LIAN ,  Zhe LI ,  Cen WANG

IPC: H01M4/58 ,  C01B33/32 ,  H01M4/02 ,  H01M10/052

Abstract: An anode active material for a battery and a preparation method thereof, a battery anode, and a secondary battery. The anode active material for a battery includes anode active substance particles, where the anode active substance particles include silicon oxide compounds and lithium; in the X-ray diffraction using Cu-Kα radiation, the anode active substance particles have a first diffraction peak in a range of 2θ=18.78°±0.2° and a second diffraction peak in a range of 2θ=47.4°±0.3°; and a full width at half maximum of the first diffraction peak is set as A, A is greater than 0.34°, a full width at half maximum of the second diffraction peak is set as B, and B/A≥1.3. The anode active material for a battery has superior electrochemical properties, including high energy density and excellent kinetic performance when employed in batteries.

公开(公告)号：US12148925B2

公开(公告)日：2024-11-19

申请号：US17788446

申请日：2020-12-29

Applicant: Berzelius (Nanjing) Co., Ltd. ,  Berzelius (Hefei) Co., Ltd.

Inventor： Shu Luo ,  Zhe Li ,  Daosong Zha ,  Fang Wang ,  Cen Wang ,  Hebao Zhang

IPC: H01M4/485 ,  H01M4/02 ,  H01M4/62

Abstract: An anode active material for batteries including anode active substance particles that include a silicon oxide compound. The anode active substance particles includes lithium and a non-lithium doping metal, where the non-lithium doping metal includes a metal M1 including one or more of titanium, magnesium, zirconium, zinc, aluminum, yttrium and calcium, and the content of the non-lithium doping metal in the anode active material is 0.01-20 wt %, for example 0.05-15 wt %, in another example 0.1-10 wt %, and in still another example 0.1-5 wt %. The anode active material has high water tolerance, and a secondary battery prepared from the anode active material has the advantages of high capacity, high coulombic efficiency and long cycle life.

公开(公告)号：US20230361274A1

公开(公告)日：2023-11-09

申请号：US17780636

申请日：2021-01-30

Applicant: BERZELIUS (NANJING) CO., LTD. ,  BERZELIUS (HEFEI) CO., LTD.

Inventor： Shu LUO ,  Zhe LI ,  Daosong ZHA ,  Hebao ZHANG ,  Cen WANG

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M4/364 ,  H01M4/386 ,  H01M4/382 ,  H01M4/5825 ,  H01M4/049 ,  H01M4/625 ,  H01M2004/027

Abstract: An anode active material for batteries includes anode active substance particles. The anode active substance particles include silicon oxide compound particles including nano-silicon grains and lithium; and a composite oxide coating layer partially or entirely covering the silicon oxide compound particles and containing a composite oxide of a metal M and phosphorus, where the metal M includes lithium and a non-lithium metal. The anode active material has good water tolerance. A battery prepared from the anode active material has at least the advantages of good cycle performance, high energy density, high coulombic efficiency, good rate performance, and the like.