公开(公告)号：EP4459775A1

公开(公告)日：2024-11-06

申请号：EP22915726.8

申请日：2022-12-14

申请人： Zeon Corporation

发明人： KITAZAWA, Yuzo

IPC分类号： H01M50/403 ,  H01M50/42 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/489

摘要： A binder composition for a non-aqueous secondary battery functional layer contains a water-soluble polymer that has a 10% molecular weight of 100,000 or less and that has a storage elastic modulus E 5 at a temperature of 50°C and a relative humidity of 5% and a storage elastic modulus E 50 at a temperature of 50°C and a relative humidity of 50% that satisfy a specific relationship.

公开(公告)号：EP4459773A1

公开(公告)日：2024-11-06

申请号：EP22915606.2

申请日：2022-11-29

申请人： SHIN-ETSU CHEMICAL CO., LTD.

发明人： OHWADA Hiroto ,  MATSUMURA Kazuyuki ,  YAGINUMA Atsushi ,  SAKATUME Yoshiteru ,  MORIMOTO Yukio

IPC分类号： H01M50/403 ,  C01B33/159 ,  H01M50/434 ,  H01M50/44 ,  H01M50/443 ,  H01M50/451 ,  H01M50/454

摘要： Provided is a coating material for a secondary battery separator, the coating material including surface-treated spherical silica particles that have on the surfaces thereof a R 1 SiO 3/2 unit (in the formula, R 1 is a univalent hydrocarbon group having 1-20 substituted or unsubstituted carbon atoms) and a R 2 3 SiO 1/2 unit (in the formula, R 2 is a univalent hydrocarbon group having 1-16 substituted or unsubstituted carbon atoms that are mutually the same or different), have a median diameter of 0.01-0.5 µm in a volume-based particle size distribution, and have a circularity of 0.8-1.0.

公开(公告)号：EP4456245A1

公开(公告)日：2024-10-30

申请号：EP22910656.2

申请日：2022-11-11

申请人： NGK Insulators, Ltd.

发明人： MITSUHASHI, Takuaki ,  IIDA, Daisuke ,  NAKASHIMA, Eiji

IPC分类号： H01M10/058 ,  H01M4/131 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0585 ,  H01M50/105 ,  H01M50/109 ,  H01M50/119 ,  H01M50/121 ,  H01M50/124 ,  H01M50/133 ,  H01M50/434 ,  H01M50/46

摘要： Provided is a lithium secondary battery, including: a positive electrode layer including a lithium composite oxide sintered body; a negative electrode layer; a separator interposed between the positive electrode layer and the negative electrode layer; an electrolytic solution impregnated into the positive electrode layer, the negative electrode layer, and the separator; and an exterior body, which has a closed space and is configured to store the positive electrode layer, the negative electrode layer, the separator, and the electrolytic solution in the closed space. This lithium secondary battery has a determination coefficient R 2 of 0.8 or more, which is obtained when plots of a square root of the number of days elapsed of up to 180 days and a capacity maintenance ratio (%) in a float charging test are linearly regressed.

公开(公告)号：EP4439845A1

公开(公告)日：2024-10-02

申请号：EP22898667.5

申请日：2022-11-25

申请人： Asahi Kasei Kabushiki Kaisha

发明人： MORI, Shohei ,  UCHIDA, Kazunori ,  HAMASAKI, Shinya

IPC分类号： H01M50/489 ,  H01G11/52 ,  H01M50/417 ,  H01M50/431 ,  H01M50/434 ,  H01M50/437 ,  H01M50/44 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/454 ,  H01M50/457 ,  H01M50/494

CPC分类号： Y02E60/10 ,  H01M50/494 ,  H01M50/434 ,  H01M50/489 ,  H01M50/457 ,  H01M50/446 ,  H01M50/451 ,  H01M50/431 ,  H01M50/454 ,  H01M50/443 ,  H01M50/437 ,  H01G11/52 ,  H01M50/417 ,  H01M50/44

摘要： Provided are: a separator for an electric power storage device, the separator having high liquid absorption and high strength; and an electric power storage device in which the separator is used. The separator for an electric power storage device includes a microporous membrane (A) containing an inorganic filler and a polyolefin resin. The microporous membrane (A) has a MFR of 0.05-5 inclusive, includes not less than 20 mass% but less than 100 mass% of the organic filler, has an average pore diameter of 100-1500 nm inclusive for the pores in a cross-section ND-MD, and has an air permeability of 340 sec/100 mL or less.

公开(公告)号：EP4439719A1

公开(公告)日：2024-10-02

申请号：EP24156276.8

申请日：2024-02-07

申请人： Samsung SDI Co., Ltd.

发明人： Woo, Hyunsik ,  Moon, Jongseok ,  Lee, Kanghee ,  Bae, Woojin ,  Kim, Heemin ,  Park, Jongseok ,  Park, Jinhwan

IPC分类号： H01M4/38 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/42 ,  H01M50/434 ,  H01M50/449

CPC分类号： H01M4/382 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/4235 ,  H01M50/451 ,  H01M50/434 ,  H01M50/449 ,  H01M2300/008520130101

摘要： A lithium metal battery including: an anode current collector; a cathode; and a separator between the anode current collector and the cathode, wherein the lithium metal battery may include an anode active material layer between the anode current collector and the separator or may not include (e.g., may exclude or be free of) the anode active material layer, and the separator may include a porous substrate and a ceramic coating layer disposed on at least one side of the porous substrate, wherein the ceramic coating layer may be placed so as to face the anode current collector, and pores in the porous substrate may contain a gel-type or kind polymer electrolyte.

公开(公告)号：EP3796457B1

公开(公告)日：2024-09-18

申请号：EP19803434.0

申请日：2019-05-14

IPC分类号： H01M10/0585 ,  H01M4/131 ,  H01M4/485 ,  H01M10/0525 ,  H01M50/434 ,  H01M50/437 ,  H01M50/46 ,  H01M10/04 ,  H01M4/525 ,  H01M4/04 ,  H01M4/1391

CPC分类号： H01M10/0525 ,  H01M4/485 ,  H01M4/131 ,  Y02E60/10 ,  H01M50/434 ,  H01M50/437 ,  H01M50/443 ,  Y02P70/50 ,  H01M50/489

公开(公告)号：EP4411915A1

公开(公告)日：2024-08-07

申请号：EP22876017.9

申请日：2022-09-22

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： MIYAMAE, Ryohei ,  KANO, Akira ,  KONDO, Shinichiro

IPC分类号： H01M10/052 ,  H01M10/0568 ,  H01M50/414 ,  H01M50/431 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/46 ,  H01M50/463

CPC分类号： H01M10/052 ,  H01M50/434 ,  H01M50/446 ,  H01M10/0568 ,  H01M50/414 ,  H01M50/451 ,  H01M50/463 ,  H01M50/431 ,  H01M50/443 ,  H01M50/46

摘要： A disclosed lithium secondary battery includes a positive electrode (11), a negative electrode (12), a separator (50) disposed between the positive electrode (11) and the negative electrode (12), and a non-aqueous electrolyte having lithium ion conductivity. The negative electrode (12) is an electrode on which lithium metal is deposited during charging and from which the lithium metal dissolves during discharging. The separator (50) includes a substrate (51) and a spacer (53). The spacer (53) is disposed on the positive electrode side with respect to the substrate (51). The spacer (53) includes line-shaped protrusions arranged in a mesh pattern. The mesh pattern includes a lacking part connecting regions within adjacent meshes.

公开(公告)号：EP4401229A1

公开(公告)日：2024-07-17

申请号：EP22867312.5

申请日：2022-09-02

申请人： Teijin Limited

发明人： ONOUE, Shuhei ,  NISHIKAWA, Satoshi

IPC分类号： H01M50/443 ,  H01M50/414 ,  H01M50/42 ,  H01M50/423 ,  H01M50/426 ,  H01M50/434 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/46 ,  H01M50/489

CPC分类号： Y02E60/10 ,  H01M50/42 ,  H01M50/434 ,  H01M50/423 ,  H01M50/489 ,  H01M50/457 ,  H01M50/446 ,  H01M50/414 ,  H01M50/451 ,  H01M50/463 ,  H01M50/443 ,  H01M50/426 ,  H01M50/46

摘要： A separator for a non-aqueous secondary battery, the separator including a porous substrate, and an adhesive layer that is provided on one side or on both sides of the porous substrate, and that contains at least one selected from the group consisting of: (i) adhesive resin particles containing a phenyl group-containing acrylic type resin and a polyvinylidene fluoride type resin, and (ii) a mixture of adhesive resin particles containing a phenyl group-containing acrylic type resin and adhesive resin particles containing a polyvinylidene fluoride type resin

公开(公告)号：EP4203130B1

公开(公告)日：2024-07-03

申请号：EP23151477.9

申请日：2010-08-11

IPC分类号： H01M10/0525 ,  H01M50/403 ,  H01M50/414 ,  H01M50/417 ,  H01M50/42 ,  H01M50/426 ,  H01M50/429 ,  H01M50/434 ,  H01M50/437 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/46 ,  H01M50/491

CPC分类号： H01M10/0525 ,  Y10T29/49112 ,  H01M50/461 ,  H01M50/446 ,  H01M50/403 ,  H01M50/414 ,  H01M50/434 ,  H01M50/443 ,  H01M50/451 ,  H01M50/437 ,  H01M50/429 ,  H01M50/417 ,  H01M50/491 ,  H01M50/426 ,  H01M50/42 ,  H01M50/457 ,  Y02E60/10

公开(公告)号：EP4391192A1

公开(公告)日：2024-06-26

申请号：EP22896834.3

申请日：2022-11-30

申请人： Sinoma Lithium Battery Separator (Ningxiang) Co., Ltd.

发明人： HU, Xuewen ,  WANG, Zelin ,  WANG, Lianjie ,  ZHANG, Dong ,  HU, Mingjie ,  YIN, Lingling

IPC分类号： H01M50/434 ,  H01M50/403 ,  H01M10/0525

摘要： The present disclosure provides a low-internal-resistance ceramic-coated separator, a preparation method thereof, and a lithium battery. The low-internal-resistance ceramic-coated separator of the present disclosure includes a polymer base film, and a ceramic layer coated on one or two sides of the polymer base film. The ceramic layer adopts low-sodium boehmite and does not contain sodium carboxymethyl cellulose (CMC). A sodium content of the ceramic layer is less than 1000 ppm, so that a Gurley increase value of the separator is significantly lowered. When applied to the lithium battery, the ceramic layer can greatly reduce an internal resistance of a cell, thereby improving the power performance and discharge efficiency of the battery.