公开(公告)号：US12006229B2

公开(公告)日：2024-06-11

申请号：US17043649

申请日：2019-06-11

Applicant: Microvast Power Systems Co., LTD.

Inventor： Bryan Yonemoto ,  Xiao Zhang

IPC: H01M4/1391 ,  B01J4/00 ,  B01J19/00 ,  C01G53/00 ,  C01G53/06 ,  H01M4/04 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/525 ,  H01M4/02 ,  H01M10/0525

CPC classification number: C01G53/006 ,  B01J4/008 ,  B01J19/0086 ,  C01G53/06 ,  H01M4/0497 ,  H01M4/13 ,  H01M4/131 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/525 ,  B01J2204/002 ,  B01J2219/00177 ,  B01J2219/00186 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/028 ,  H01M10/0525

Abstract: The present disclosure provides a method for preparing full-gradient particle precursors, and the full-gradient particle precursor prepared thereby. By controlling different types of anion compositions and/or cation compositions gradually changed to other types, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, collecting the precipitated particle, treating with water, and drying to yield the particle precursor. After being washed and dried, the particle precursor is further mixed with lithium source, after calcining to yield cathode active particles. The cathode active particles can be used to prepare cathode of lithium-ion battery.

公开(公告)号：US11996562B2

公开(公告)日：2024-05-28

申请号：US16970380

申请日：2019-01-31

Applicant: ZEON CORPORATION

Inventor： Yusaku Matsuo ,  Kenya Sonobe

IPC: H01M4/62 ,  C08F265/10 ,  C08L51/06 ,  H01M4/131 ,  H01M4/139 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/622 ,  C08F265/10 ,  C08L51/06 ,  H01M4/131 ,  H01M4/139 ,  H01M4/525 ,  H01M10/0525 ,  C08L2203/206 ,  H01M2004/028

Abstract: Provided is a binder composition for a non-aqueous secondary battery electrode that can inhibit electrode swelling associated with repeated charging and discharging while also causing a secondary battery to display excellent cycle characteristics. The binder composition contains a graft copolymer having a structure in which a branch polymer is bonded to a backbone polymer. The backbone polymer includes a hydroxyl group-containing vinyl monomer unit in a proportion of not less than 5 mass % and not more than 89 mass % and has a weight-average molecular weight of not less than 1.0×106 and not more than 2.0×107. The branch polymer includes a water-soluble monomer unit that is formed from a water-soluble monomer having a solubility of not less than 0.01 g/100 g-H2O and not more than 25 g/100 g-H2O at a temperature of 20° C.

公开(公告)号：US20240170820A1

公开(公告)日：2024-05-23

申请号：US18283636

申请日：2022-01-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Reiko Izumi ,  Satoru Maeda ,  Shinya Geshi ,  Kiyomi Kozuki

IPC: H01M50/586 ,  H01M4/02 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M50/533 ,  H01M50/536 ,  H01M50/593

CPC classification number: H01M50/586 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M50/533 ,  H01M50/536 ,  H01M50/593 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode, which is an example of this secondary battery electrode, includes: a positive electrode core material; an electrically conductive adhesive layer disposed on the positive electrode core material; and a positive electrode mixture layer disposed on the adhesive layer. The positive electrode core material includes, at one end in a lateral direction of the positive electrode core material, an exposed portion where the adhesive layer and the positive electrode mixture layer are not disposed. An insulating protection layer that includes resin is disposed on the exposed portion of the one end. A predetermined gap is provided between the protective layer and an end surface of one end in the lateral direction of the adhesive layer.

公开(公告)号：US11990621B2

公开(公告)日：2024-05-21

申请号：US18205264

申请日：2023-06-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroatsu Todoriki ,  Yumiko Saito ,  Takahiro Kawakami ,  Kuniharu Nomoto ,  Mikio Yukawa

IPC: H01M4/583 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/192 ,  C01B32/23 ,  H01G9/042 ,  H01G11/22 ,  H01G11/32 ,  H01G11/36 ,  H01M4/04 ,  H01M4/133 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/62 ,  H01M6/16 ,  H01M10/0566 ,  H01M10/0525

CPC classification number: H01M4/5835 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/192 ,  C01B32/23 ,  H01G9/042 ,  H01G11/22 ,  H01G11/32 ,  H01G11/36 ,  H01M4/0438 ,  H01M4/133 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/62 ,  H01M6/16 ,  H01M10/0566 ,  H01M10/0525 ,  Y02E60/13

Abstract: The formation method of graphene includes the steps of forming a layer including graphene oxide over a first conductive layer; and supplying a potential at which the reduction reaction of the graphene oxide occurs to the first conductive layer in an electrolyte where the first conductive layer as a working electrode and a second conductive layer with a as a counter electrode are immersed. A manufacturing method of a power storage device including at least a positive electrode, a negative electrode, an electrolyte, and a separator includes a step of forming graphene for an active material layer of one of or both the positive electrode and the negative electrode by the formation method.

公开(公告)号：US11990602B2

公开(公告)日：2024-05-21

申请号：US16324706

申请日：2017-12-27

Applicant: LG CHEM, LTD.

Inventor： Oh-Byong Chae ,  Eun-Kyung Kim ,  Sang-Wook Woo ,  Geun-Sik Jo ,  Soo-Hee Kang ,  Hee-Won Choi

IPC: H01M4/04 ,  C22C24/00 ,  C22F1/16 ,  H01M4/02 ,  H01M4/08 ,  H01M4/134 ,  H01M4/139 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/052

CPC classification number: H01M4/0485 ,  C22C24/00 ,  C22F1/16 ,  H01M4/02 ,  H01M4/043 ,  H01M4/08 ,  H01M4/134 ,  H01M4/139 ,  H01M4/1395 ,  H01M4/382 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/30

Abstract: A lithium metal is physically pressed to a silicon wafer having a uniform intaglio or embossed pattern formed thereon in advance, or liquid lithium is applied to the silicon wafer and may then be cooled in order to form a uniform pattern on the surface of the lithium metal.

公开(公告)号：US20240162503A1

公开(公告)日：2024-05-16

申请号：US18283625

申请日：2022-01-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Reiko Izumi ,  Satoru Maeda ,  Shinya Geshi ,  Kiyomi Kozuki

IPC: H01M10/42 ,  H01M4/04 ,  H01M4/139 ,  H01M4/75 ,  H01M50/536

CPC classification number: H01M10/4235 ,  H01M4/0404 ,  H01M4/139 ,  H01M4/75 ,  H01M50/536

Abstract: A positive electrode that is an example of an electrode for a secondary battery comprises: a positive electrode core material, a conductive adhesive layer disposed on the positive electrode core material, and a positive electrode mixture layer disposed on the adhesive layer, wherein: the positive electrode core material has, at one end in the short direction of the positive electrode core material, an exposed part on which the adhesive layer and the positive electrode mixture layer are not provided; an insulating protective layer containing a resin is disposed on the exposed part at the one end; and the protective layer is in contact with the end surface at one end of the adhesive layer and the positive electrode mixture layer in the short direction.

公开(公告)号：US20240154126A1

公开(公告)日：2024-05-09

申请号：US18361968

申请日：2023-07-31

Applicant: GM Global Technology Operations LLC

Inventor： Yong LU ,  Zhe Li ,  Qili Su ,  Haijing Liu

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/139 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585

CPC classification number: H01M4/623 ,  H01M4/0435 ,  H01M4/139 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585 ,  H01M2004/029

Abstract: A bipolar battery cell includes a bipolar electrode including a bipolar current collector and a cathode electrode arranged on one side of the bipolar current collector. The cathode electrode includes cathode active material for exchanging lithium ions, a first solid electrolyte, and first polytetrafluoroethylene (PTFE) fibrils. An anode electrode is arranged on an opposite side of the bipolar current collector, wherein the anode electrode includes anode active material for exchanging lithium ions, a second solid electrolyte, and second PTFE fibrils.

公开(公告)号：US11961993B2

公开(公告)日：2024-04-16

申请号：US17056958

申请日：2019-12-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Meng Kang ,  Xiaobin Dong ,  Jiazheng Wang ,  Libing He

IPC: H01M4/133 ,  H01M4/139 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583 ,  H01M4/02 ,  H01M10/0525

CPC classification number: H01M4/133 ,  H01M4/139 ,  H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/387 ,  H01M4/583 ,  H01M2004/027 ,  H01M10/0525 ,  H01M2220/20

Abstract: This application relates to a secondary battery and an apparatus including the secondary battery. Specifically, the secondary battery of this application includes a negative electrode plate, where the negative electrode plate includes a negative current collector and negative film layers where the negative film layers include a first negative film layer and a second negative film layer, the first negative film layer is disposed on at least one surface of the negative current collector and includes a first negative active material, and the second negative film layer is disposed on the first negative film layer and includes a second negative active material; the first negative active material includes natural graphite, and the second negative active material includes artificial graphite; the first negative active material satisfies 4.0≤COI1≤7.0; and the second negative active material satisfies 2.2≤COI2≤4.2.

公开(公告)号：US20240120495A1

公开(公告)日：2024-04-11

申请号：US17768436

申请日：2021-05-07

Applicant: LG Energy Solution, LTD.

Inventor： Hyunwoong Yun ,  Jung Pil Lee ,  Hoejin Hah

IPC: H01M4/66 ,  H01M4/13 ,  H01M4/139 ,  H01M10/058

CPC classification number: H01M4/66 ,  H01M4/13 ,  H01M4/139 ,  H01M10/058 ,  H01M2004/021

Abstract: A lithium free battery comprising a positive electrode, a negative electrode, a separator, and a non-aqueous lithium electrolyte, wherein the negative electrode includes a metal substrate including at least one metal selected from the group consisting of Mg, Ca, Al, Si, Ge, Sn, Pb, As, Sb, Bi, Ag, Zn, Cd, P and Hg; a lithium-metal alloy layer formed on the metal substrate; and a lithium plating layer formed on the lithium-metal alloy layer, and a method for preparing the same.

公开(公告)号：US20240105911A1

公开(公告)日：2024-03-28

申请号：US18472494

申请日：2023-09-22

Applicant: II-VI Delaware, Inc.

Inventor： Xinyu Lu ,  Wen-Qing Xu ,  Zan Gao

IPC: H01M4/139 ,  H01G11/38 ,  H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  H01M4/74 ,  H01M4/80 ,  H01M10/052 ,  H01M10/0585

CPC classification number: H01M4/139 ,  H01G11/38 ,  H01M4/0404 ,  H01M4/625 ,  H01M4/661 ,  H01M4/74 ,  H01M4/80 ,  H01M10/052 ,  H01M10/0585 ,  H01M2004/021

Abstract: A double-sided coating may include a substrate having a first side and an opposing second side, a first coating forming a first electrode arranged on the first side, and a second coating forming a second electrode arranged on the second side. Each of the first coating and the second coating have a thickness of at least 30 μm and a surface roughness (Ra) of less than 10 μm and are formed from a slurry including a liquid carrier suspending solid particles. The slurry includes a binder, an active material, and a conductive material.