公开(公告)号：US20240332530A1

公开(公告)日：2024-10-03

申请号：US18740192

申请日：2024-06-11

申请人： Sila Nanotechnologies, Inc.

发明人： Gleb YUSHIN ,  Adam KAJDOS

IPC分类号： H01M4/587 ,  H01G11/24 ,  H01G11/34 ,  H01G11/42 ,  H01G11/44 ,  H01G11/56 ,  H01G11/86 ,  H01M4/02 ,  H01M10/052 ,  H01M10/054

CPC分类号： H01M4/587 ,  H01G11/24 ,  H01G11/34 ,  H01G11/42 ,  H01G11/44 ,  H01G11/56 ,  H01G11/86 ,  H01M10/052 ,  H01M10/054 ,  H01M2004/021

摘要： An embodiment is directed to an electrode composition for use in an energy storage device cell. The electrode comprises composite particles, each comprising carbon that is biomass-derived and active material. The active material exhibits partial vapor pressure below around 10−13 torr at around 400 K, and an areal capacity loading of the electrode composition ranges from around 2 mAh/cm2 to around 16 mAh/cm2.

公开(公告)号：US20240322119A1

公开(公告)日：2024-09-26

申请号：US18578125

申请日：2022-07-11

申请人： GS Yuasa International Ltd.

发明人： Jun OYAMA ,  Kenta NAKAI ,  Takashi KANEKO ,  Kenta UEHIRA ,  Tomonori KAKO ,  Yuto YAMAKAWA ,  Taisei SEKIGUCHI

IPC分类号： H01M4/133 ,  H01G11/24 ,  H01G11/42 ,  H01G11/50 ,  H01M4/02 ,  H01M10/0525

CPC分类号： H01M4/133 ,  H01G11/24 ,  H01G11/42 ,  H01G11/50 ,  H01M4/02 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

摘要： An energy storage device according to one aspect of the present invention includes: a negative electrode including a negative active material layer; and a nonaqueous electrolyte. The negative active material layer contains a negative active material. The negative active material contains natural graphite particles. The natural graphite particles have an internal porosity of 2% or less. A state of charge of the negative active material in a charged state is 0.6 or less.

公开(公告)号：US11777070B2

公开(公告)日：2023-10-03

申请号：US17043598

申请日：2019-05-13

申请人： Tesla, Inc.

发明人： Yudi Yudi ,  Hieu Minh Duong ,  Joon Ho Shin

IPC分类号： H01M4/04 ,  H01G11/28 ,  H01G11/42 ,  H01G11/46 ,  H01G11/50 ,  H01M4/1391 ,  H01M4/62 ,  H01M4/02

CPC分类号： H01M4/0402 ,  H01G11/28 ,  H01G11/42 ,  H01G11/46 ,  H01G11/50 ,  H01M4/1391 ,  H01M4/623 ,  H01M2004/021

摘要： Materials and methods for preparing dry cathode electrode film including reduced binder content are described. The cathode electrode film may be a self-supporting film including a single binder. The binder loading may be 3 weight % or less. In a first aspect, a method for preparing a dry free standing electrode film for an energy storage device is provided, comprising nondestructively mixing a cathode active material, a porous carbon, and optionally a conductive carbon to form an active material mixture, adding a single fibrillizable binder to the active material mixture, nondestructively mixing to form an electrode film mixture, and calendering the electrode film mixture to form a free standing electrode film.

公开(公告)号：US11551877B2

公开(公告)日：2023-01-10

申请号：US16301589

申请日：2017-04-21

申请人： KURARAY CO., LTD.

发明人： Shohei Kobayashi ,  Motomi Matsushima ,  Seiya Kimachi ,  Hideharu Iwasaki

IPC分类号： C01B31/08 ,  H01G11/32 ,  H01G11/04 ,  H01G11/34 ,  H01G11/20 ,  C01B32/318 ,  H01G11/86 ,  H01G11/24 ,  C01B32/336 ,  H01G11/42 ,  C01B32/354 ,  C01B32/30 ,  H01G11/00

摘要： An object of the present invention is to provide a carbonaceous material used for an electric double layer capacitor having a high electrostatic capacity and capable of maintaining the high electrostatic capacity and energy density over a long period and a method for producing the same. The present invention relates to a carbonaceous material having a specific surface area of 1,200 m2/g to 1,800 m2/g according to a BET method, an R-value of 1.2 or more and a G-band half-value width of 70 cm−1 or more according to a Raman spectrum.

公开(公告)号：US11532441B2

公开(公告)日：2022-12-20

申请号：US16627392

申请日：2018-06-29

申请人： AVX Corporation

发明人： Shawn Hansen

IPC分类号： H01G11/42 ,  H01G11/28 ,  H01G11/52 ,  H01G11/60 ,  H01G11/68 ,  H01G11/70

摘要： An electrode assembly for an ultracapacitor is provided. The electrode assembly contains a first electrode comprising a first current collector electrically coupled to a first carbonaceous coating, a second electrode comprising a second current collector electrically coupled to a second carbonaceous coating, and a separator positioned between the first electrode and the second electrode. At least a portion of the first current collector projects beyond the first longitudinal edge to define a first projecting portion, wherein the offset ratio of the first projecting portion is from about 0.02 to about 0.3.

公开(公告)号：US11527747B2

公开(公告)日：2022-12-13

申请号：US16665430

申请日：2019-10-28

申请人： Tesla, Inc.

发明人： Hieu Minh Duong ,  Porter Mitchell ,  Mohammed-Yazid Saidi

IPC分类号： H01M4/36 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/1395 ,  H01G11/42 ,  H01G11/50 ,  H01G11/52 ,  H01G11/86 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/052

摘要： An energy storage device can include a first electrode, a second electrode and a separator between the first electrode and the second electrode wherein the first electrode or the second electrode includes elemental lithium metal and carbon particles. A method for fabricating an energy storage device can include forming a first electrode and a second electrode, and inserting a separator between the first electrode and the second electrode, where forming the first electrode or the second electrode can include combining elemental lithium metal and a plurality of carbon particles.

公开(公告)号：US20220310332A1

公开(公告)日：2022-09-29

申请号：US17315909

申请日：2021-05-10

申请人： KOREA INSTITUTE OF ENERGY RESEARCH

发明人： Jung Joon YOO ,  Ji Haeng YU ,  Kyong Sik YUN ,  Jeong Hun BAEK ,  Hyeon Jin KIM

IPC分类号： H01G11/84 ,  H01G11/24 ,  H01G11/10 ,  H01G11/42

摘要： Disclosed herein is an electrochemical device forming a chip-capacitor or a super-capacitor. The electrochemical device includes: a ceramic substrate having a nonconductive ceramic layer, a current collecting layer disposed on a nonconductive ceramic layer and made of ceramic or cermet, and a metal layer arranged on outer surfaces of the nonconductive ceramic layer and the current collecting layer; an electrode having a positive electrode and a negative electrode and formed on the current collecting layer; and a nonconductive ceramic packaging module located on the ceramic substrate to accommodate electrolyte therein, wherein the metal layer is exposed to the outside of the nonconductive ceramic packaging module.

公开(公告)号：US11456484B2

公开(公告)日：2022-09-27

申请号：US16213873

申请日：2018-12-07

申请人： Enevate Corporation

发明人： Liwen Ji ,  Benjamin Yong Park ,  Sung Won Choi ,  Heidi Anderson

IPC分类号： H01M10/0567 ,  H01M4/38 ,  H01M10/0525 ,  H01G11/52 ,  H01G11/42 ,  H01G11/64 ,  H01M4/134 ,  H01M4/62 ,  H01M4/36 ,  H01M4/02 ,  H01G11/50 ,  H01G11/06 ,  H01M10/42

摘要： Electrolytes and electrolyte additives for energy storage devices comprising linear carbonate compounds.

公开(公告)号：US11450487B2

公开(公告)日：2022-09-20

申请号：US16409177

申请日：2019-05-10

申请人： Nanotek Instruments, Inc.

发明人： Song-Hai Chai ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01G11/04 ,  C01B32/23 ,  C01B32/19 ,  H01G11/02 ,  C01B19/04 ,  C01G39/06 ,  C01G45/02 ,  C07G1/00 ,  C08G61/12 ,  C08H7/00 ,  C11B1/10 ,  H01G11/24 ,  H01G11/36 ,  H01G11/46 ,  H01G11/48 ,  H01G11/52 ,  H01G11/38 ,  H01G11/06 ,  H01G11/42

摘要： A supercapacitor electrode comprises a mixture of graphene sheets and humic acid. The humic acid occupies 0.1% to 99% by weight of the mixture and the graphene sheets are selected from a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 5% by weight of non-carbon elements. The non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof. The mixture has a specific surface area greater than 500 m2/g.

公开(公告)号：US20220069305A1

公开(公告)日：2022-03-03

申请号：US17417863

申请日：2019-12-25

申请人： KURARAY CO., LTD.

发明人： Junichi ARIMA ,  Yasuyuki HIROTA ,  Akinori YAMABATA ,  Taketoshi OKUNO

IPC分类号： H01M4/587 ,  H01M10/0525 ,  H01G11/50 ,  H01G11/42 ,  H01G11/24 ,  C01B32/05

摘要： The present invention relates to a carbonaceous material for an electrochemical device, having an average particle size D50 of 30 μm or larger as measured by a laser scattering method, and a basic flowability energy BFE of 270 mJ to 1,100 mJ as measured using a powder flowability analyzer equipped with a measuring vessel of 50 mm in diameter and 160 mL in volume under the conditions of a blade tip speed of 100 mm/sec and a powder sample filling capacity of 120 mL and calculated by the following formula: BFE=T/(R tan α)+F (wherein, R=48 mm, α=5°, T represents a numerical value of the rotational torque measured by the analyzer, and F represents a numerical value of the normal stress measured by the analyzer).