公开(公告)号：US20230047101A1

公开(公告)日：2023-02-16

申请号：US17975185

申请日：2022-10-27

申请人： DONG-A UNIVERSITY RESEARCH FOUNDATION FOR INDUSTRY-ACADEMY COOPERATION

发明人： Hyo Jong LEE ,  Han Kyun SHIN ,  Sang Hyeok KIM

IPC分类号： C25D1/04 ,  C25D3/38 ,  C25D5/10 ,  C25D17/00 ,  C25D21/12

摘要： The multilayer copper foil includes: a recrystallization active layer disposed on a surface of a substrate; and a recrystallization suppressing layer disposed on a surface of the recrystallization active layer to inhibit recrystallization of the recrystallization active layer, wherein a concentration of impurities within the recrystallization suppressing layer is greater than a concentration of impurities within the recrystallization active layer.

公开(公告)号：US20230017083A1

公开(公告)日：2023-01-19

申请号：US17950144

申请日：2022-09-22

申请人： Magic Star Technology(Ningbo)Co.,Ltd.

发明人： DINGUO CHEN

IPC分类号： C21D9/46 ,  C22C38/10 ,  C22C38/08 ,  C22C19/07 ,  C21D8/02 ,  C21D6/00 ,  C22F1/10 ,  C25D1/04 ,  C25D1/20 ,  B21B1/40 ,  B23K26/354

摘要： Disclosed is a method for preparing a high-flatness metal foil suitable for making a metal mask, and the method comprises the following steps: forming a raw metal coarse foil; rolling the raw metal coarse foil at least once into a high-flatness metal foil; performing, by a heat treatment device, heat treatment processing on the precisely rolled metal foil according to a preset temperature and a preset time; using a tension leveler to perform tension leveling on the rolled and heat-treated metal foil; and obtaining a high-flatness metal foil after completion of the tension leveling and forming a rolled metal foil in a continuous forming process. The resulting metal foil has high flatness and low residual stress, which improves quality and performance of the metal foil and is suitable for the fabrication of fine metal masks.

公开(公告)号：US11540389B1

公开(公告)日：2022-12-27

申请号：US17485482

申请日：2021-09-26

申请人： CHANG CHUN PETROCHEMICAL CO., LTD.

发明人： Chien-Ming Lai ,  Yao-Sheng Lai ,  Jui-Chang Chou

IPC分类号： H05K1/03 ,  B32B15/04 ,  B32B15/20 ,  C25D1/04

摘要： A surface-treated copper foil including a treating surface, where the root mean square height (Sq) of the treating surface is in a range of 0.20 to 1.50 μm and the texture aspect ratio (Str) of the treating surface is not greater than 0.65. When the surface-treated copper foil is heated at a temperature of 200° C. for 1 hour, the ratio of the integrated intensity of (111) peak to the sum of the integrated intensities of (111) peak, (200) peak, and (220) peak of the treating surface is at least 60%.

公开(公告)号：US11499235B2

公开(公告)日：2022-11-15

申请号：US16887656

申请日：2020-05-29

申请人： TOPPAN PRINTING CO., LTD.

发明人： Mikio Shinno

IPC分类号： C23F1/02 ,  B21B1/22 ,  C21D6/00 ,  C21D8/02 ,  C21D9/52 ,  C23C14/04 ,  C23C16/04 ,  C23C16/56 ,  C25D1/04 ,  C25D1/10 ,  C25D3/56 ,  C25D1/16

摘要： A metal sheet has a longitudinal direction and a width direction. The metal sheet has shapes in the width direction that are taken at different positions in the longitudinal direction of the metal sheet and differ from one another. Each of the shapes is an undulated shape including protrusions and depressions repeating in the width direction of the metal sheet. A length in the width direction of a surface of the metal sheet is a surface distance. A minimum value of surface distances at different positions in the longitudinal direction of the metal sheet is a minimum surface distance. A ratio of a difference between a surface distance and the minimum surface distance to the minimum surface distance is an elongation difference ratio in the width direction. A maximum value of elongation difference ratios is less than or equal to 2×10−5.

公开(公告)号：US11359298B2

公开(公告)日：2022-06-14

申请号：US16490289

申请日：2018-03-01

申请人： KYOTO UNIVERSITY ,  NIPPON STEEL CORPORATION

发明人： Tetsuya Uda ,  Kouhei Funatsu ,  Akihiro Kishimoto ,  Kenichi Mori ,  Hideki Fujii

IPC分类号： C25D1/20 ,  C25D1/04 ,  C25D3/54

摘要： A titanium foil or a titanium sheet is produced by electrodeposition from molten salt using constant current pulse, the method comprising: forming an electrodeposited titanium film on a surface of a cathode electrode made of glassy carbon, graphite, Mo, and Ni, and separating thereafter the electrodeposited titanium film from the cathode electrode by performing one or both of applying an external force to the electrodeposited titanium film and removing the cathode electrode. This enables the electrodeposited titanium film electrodeposited on the cathode electrode to be peeled from the cathode electrode simply and at low cost.

公开(公告)号：US20220112618A1

公开(公告)日：2022-04-14

申请号：US17311231

申请日：2019-12-03

申请人： NIPPON DENKAI, LTD.

发明人： Toshio KAWASAKI ,  Tsuyoshi ONUMA ,  Yasuhiro ENDO

IPC分类号： C25D1/04 ,  H01M4/66

摘要： An electrolytic copper foil having higher electrical conductivity, and a method for producing the same are provided. The electrolytic copper foil according the present invention has a carbon content of 5 ppm or less, a sulfur content of 3 ppm or less, an oxygen content of 5 ppm or less, and a nitrogen content of 0.5 ppm or less; has a total content of carbon, sulfur, oxygen, nitrogen, and hydrogen of 15 ppm or less; and has a number of grains of 8.0 to 12.0/μm2, the number of grains changing to 0.6 to 1.0/μm2 by heating the electrolytic copper foil at 150° C. for 1 hour. A method for producing this electrolytic copper foil includes cleaning a copper raw material; dissolving the copper raw material after the cleaning to obtain an electrolytic solution having a total organic carbon (TOC) of 10 ppm or less; and electrolyzing the electrolytic solution to obtain the electrolytic copper foil.

公开(公告)号：US11171319B2

公开(公告)日：2021-11-09

申请号：US16343527

申请日：2017-03-28

申请人： ILJIN MATERIALS CO., LTD.

发明人： Sun Hyoung Lee ,  Tae Jin Jo ,  Seul-Ki Park ,  Ki Deok Song

IPC分类号： C22C9/00 ,  C25D1/04 ,  C25D3/38 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/139 ,  H01M4/134 ,  H01M10/02 ,  H01M4/66 ,  C25D17/12

摘要： The present invention relates to an electrolytic copper foil for a secondary battery, and a method of producing the same. The electrolytic copper foil for a secondary battery exhibits a little change in a physical property caused by a difference in a crosshead speed when tensile strength and an elongation percentage of the electrolytic copper foil are measured, thereby achieving excellent charging and discharging characteristics of a battery and preventing exfoliation of an active material. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), cobalt, and iron by using a drum, in which a ratio of the TOC to the cobalt and the iron contained in the electrolytic copper foil follows Formula 1 below. TOC/(cobalt+iron)=1.3 to 1.5  [Formula 1]

公开(公告)号：US11145867B2

公开(公告)日：2021-10-12

申请号：US16654723

申请日：2019-10-16

申请人： CHANG CHUN PETROCHEMICAL CO., LTD.

发明人： Chien-Ming Lai ,  Yao-Sheng Lai ,  Jui-Chang Chou

IPC分类号： B32B15/01 ,  H01M4/66 ,  H01M4/04 ,  H01M10/0525 ,  C25D1/04 ,  H01M4/70 ,  B32B15/08 ,  B32B15/20 ,  C25D3/04 ,  C25D3/12 ,  C25D3/22 ,  C25D3/38 ,  C25D5/14 ,  C25D5/16 ,  C25D5/48 ,  H05K1/09 ,  H05K1/18 ,  H05K3/38 ,  C25D5/10 ,  H05K1/02 ,  H01M4/02

摘要： Surface-treated copper foils exhibiting a void volume (Vv) in a range of 0.4 to 2.2 μm3/μm2 and an arithmetic mean waviness (Wa) lower than or equal to 0.4 μm are reported. Where the surface-treated copper foil is treated on the drum side and includes a treatment layer comprising a nodule layer. Such surface-treated copper foils can be used as a conductive material having low transmission loss, for example in circuit boards.

公开(公告)号：US20210305580A1

公开(公告)日：2021-09-30

申请号：US17260405

申请日：2020-01-15

申请人： CHANG CHUN PETROCHEMICAL CO., LTD.

发明人： Huei-Fang HUANG ,  Chih-Chung WU ,  Yao-Sheng LAI ,  Jui-Chang CHOU

IPC分类号： H01M4/66 ,  H01M4/04 ,  H01M10/0525 ,  C25D1/04 ,  H01M4/70 ,  B32B15/01 ,  B32B15/08 ,  B32B15/20 ,  C25D3/04 ,  C25D3/12 ,  C25D3/22 ,  C25D3/38 ,  C25D5/14 ,  C25D5/16 ,  C25D5/48 ,  H05K1/09 ,  H05K1/18 ,  H05K3/38 ,  C25D5/10 ,  H05K1/02

摘要： Provided are an electrodeposited copper foil, an electrode comprising the same, and a lithium-ion secondary battery comprising the same. The electrodeposited copper foil has a drum side and a deposited side opposing the drum side, wherein at least one of the drum side and the deposited side exhibits a void volume value (Vv) in the range of 0.17 μm3/μm2 to 1.17 μm3/μm2; and an absolute value of a difference between a maximum height (Sz) of the drum side and a Sz of the deposited side is in the range of less than 0.60 μm.

公开(公告)号：US20210257603A1

公开(公告)日：2021-08-19

申请号：US17246657

申请日：2021-05-02

申请人： ILJIN MATERIALS CO., LTD.

发明人： Sun Hyoung LEE ,  Tae Jin JO ,  Seul-Ki PARK ,  Ki Deok SONG

IPC分类号： H01M4/04 ,  C25D1/04 ,  C22C9/00 ,  H01M10/02 ,  H01M4/66 ,  C25D17/12 ,  C25D3/38

摘要： The present invention relates to an electrolytic copper foil for a secondary battery, and a method of producing the same. The electrolytic copper foil for a secondary battery exhibits a little change in a physical property caused by a difference in a crosshead speed when tensile strength and an elongation percentage of the electrolytic copper foil are measured, thereby achieving excellent charging and discharging characteristics of a battery and preventing exfoliation of an active material. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), cobalt, and iron by using a drum, in which a ratio of the TOC to the cobalt and the iron contained in the electrolytic copper foil follows Formula 1 below. TOC/(cobalt+iron)=1.3 to 1.5   [Formula 1]