-
公开(公告)号：US20250149544A1
公开(公告)日：2025-05-08
申请号：US18730120
申请日：2023-01-12
Inventor： Kazuko Asano , Yukihiro Oki , Mitsuhiro Hibino
IPC: H01M4/134 , H01M4/02 , H01M4/133 , H01M10/0525
Abstract: A lithium ion battery having a high capacity and improved rapid charging performance is provided. A lithium ion battery according to an aspect of the present disclosure is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode has a negative electrode core body, a first negative electrode mixture layer formed on the surface of the negative electrode core body, and a second negative electrode mixture layer formed on the surface of the first negative electrode mixture layer. The first negative electrode mixture layer includes a first negative electrode active material that includes graphite. The second negative electrode mixture layer includes a second negative electrode active material that includes at least one selected from the group consisting of metals that bind to lithium, alloys that bind to lithium, and compounds that bind to lithium.
-
公开(公告)号：US20250105271A1
公开(公告)日：2025-03-27
申请号：US18724805
申请日：2022-10-31
Inventor： Youshin Lee , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/02 , H01M4/04 , H01M4/525 , H01M10/0525
Abstract: A positive electrode for secondary batteries according to the present invention comprises a positive electrode collector and a positive electrode mixture layer that is arranged on the positive electrode collector, and is characterized in that: the positive electrode mixture layer comprises a positive electrode active material that contains a lithium-containing composite oxide that is composed of secondary particles, each of which is formed of aggregated primary particles; a coating film that contains elemental Nb is formed on the surface of each primary particle of the lithium-containing composite oxide; and the Gini coefficient of elemental Nb as calculated from an element mapping image that is obtained by time-of-flight secondary ion mass spectrometry (TOF-SIMS) of a cross-section of the secondary particles is 0.5 or less.
-
公开(公告)号：US20250070133A1
公开(公告)日：2025-02-27
申请号：US18719069
申请日：2022-10-28
Inventor： Tooru Matsui , Yukihiro Oki , Hiroshi Kawada , Mitsuhiro Hibino , Kensuke Nakura
Abstract: The present invention provides a nonaqueous electrolyte secondary battery which comprises a positive electrode, a negative electrode and a nonaqueous electrolyte, and which is characterized in that: the positive electrode comprises a positive electrode collector and a positive electrode mixture layer that is arranged on the positive electrode collector; the positive electrode mixture layer comprises secondary particles, each of which is composed of aggregated primary particles of a positive electrode active material, and an assembly of a conductive material and the primary particles of the positive electrode active material; and the assembly is present in the gaps among the secondary particles.
-
公开(公告)号：US20250062333A1
公开(公告)日：2025-02-20
申请号：US18720834
申请日：2022-12-22
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , C01G45/12 , H01M10/0525
Abstract: A positive electrode active material for a secondary battery contains a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to the space group Fm-3m. The lithium metal composite oxide contains at least one element A1 selected from the group consisting of Fe, Ca, Cr, Na, Al, Si, Mg, Cu, Zn, Pb, Sb, and W. The content of the element A1 in the lithium metal composite oxide is 10 ppm by mass or more and 1000 ppm by mass or less with respect to the total amount of the lithium metal composite oxide. A lattice constant a, which indicates a length in an a-axis direction of a crystal lattice of the lithium metal composite oxide is 4.09 Å or more and 4.16 Å or less.
-
公开(公告)号：US20230369579A1
公开(公告)日：2023-11-16
申请号：US18028999
申请日：2021-09-14
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/1315 , C01B11/24
CPC classification number: H01M4/505 , C01B11/24 , H01M4/1315 , C01P2006/40
Abstract: A positive electrode active material for a secondary battery including: a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to a space group Fm-3m. The lithium metal composite oxide contains an element A1 of at least one selected from the group consisting of Ca, Al, and Si, and in the lithium metal composite oxide, a total of Ca, Al, and Si contents relative to a total of the lithimn metal composite oxide is 10 to 1000 ppm by mass.
-
Patent Agency Ranking
公开(公告)号：US20230335728A1
公开(公告)日：2023-10-19
申请号：US18028929
申请日：2021-09-14
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/1315 , C01G45/12
CPC classification number: H01M4/505 , H01M4/1315 , C01G45/1228 , C01P2006/40 , C01P2002/52 , C01P2002/76
Abstract: A positive electrode active material for a secondary battery includes a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to a space group Fm-3m, wherein the lithium metal composite oxide includes Ti and a metal element M1 other than Li and Ti. The metal element M1 preferably further includes at least one selected from the group consisting of Fe, Ge, Si, and Ga.
-
公开(公告)号：US20230110150A1
公开(公告)日：2023-04-13
申请号：US17800779
申请日：2021-02-25
Inventor： Akiko Murata , Hiroshi Kawada , Mitsuhiro Hibino
Abstract: This positive electrode active material for a non-aqueous electrolyte secondary battery contains a lithium transition metal complex oxide capable of occluding and releasing Li. The lithium transition metal complex oxide is represented by general formula LixM1yOzFw (in the formula, 0.5 ≤ ×
-
公开(公告)号：US20230094468A1
公开(公告)日：2023-03-30
申请号：US17799761
申请日：2021-01-21
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/525 , H01M4/505 , H01M4/485 , H01M50/46 , H01M10/0525
Abstract: This positive electrode active material for a non-aqueous electrolyte secondary battery contains a lithium-transition metal composite oxide that has a rock salt-related structure and is represented by the compositional formula LiaMnbMcO2-xFx (in the formula: M is at least one metal element excluding Li and Mn; 2.000
-
公开(公告)号：US11038171B2
公开(公告)日：2021-06-15
申请号：US16405385
申请日：2019-05-07
Inventor： Kazuko Asano , Kensuke Nakura , Mitsuhiro Hibino , Jin Zhang
Abstract: An active material for a fluoride ion secondary battery includes a composite fluoride which contains: an alkali metal or NH4; a transition metal; and fluorine.
-
公开(公告)号：US20250140817A1
公开(公告)日：2025-05-01
申请号：US18694224
申请日：2022-09-08
Inventor： Yukihiro Oki , Kazuko Asano , Kensuke Nakura , Mitsuhiro Hibino
IPC: H01M4/38 , C01B33/06 , H01M4/36 , H01M10/052
Abstract: Disclosed is a negative electrode active material for a secondary battery containing: a composite material that has a silicide phase and a silicon phase, wherein the silicide phase contains an intermetallic compound of a silicon element and a metal element Me other than the silicon element, the metal element Me includes N kinds or more constituent elements Mi, where i=1 to N, and 5≤N, and a condition represented by the following expression is satisfied: 1.5
-
-
-
-
-
-
-
-
-
Search Results
45
records
(took 0.023 seconds)
