中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.011 seconds)

    SEPARATOR COMPRISING DUAL COATING LAYERS AND SECONDARY BATTERY COMPRISING THE SAME
    1.
    发明申请
    SEPARATOR COMPRISING DUAL COATING LAYERS AND SECONDARY BATTERY COMPRISING THE SAME 有权

    公开(公告)号：US20210050577A1

    公开(公告)日：2021-02-18

    申请号：US17051280

    申请日：2020-01-16

    Applicant: LG CHEM, LTD.

    Inventor： Kyung Ryun KA ,  Su Jin PARK ,  Sang Joon LEE ,  Je An LEE

    IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0525

    Abstract: A separator having a polyolefin substrate, first coating layer including first inorganic particles on at least one surface of the polyolefin substrate and a second coating layer including second inorganic particles on a surface of the first coating layer opposite the polyolefin substrate, An average particle size of the first inorganic material particles of the first coating layer is greater than an average particle size of the second, inorganic material particles of the second coating layer. The first inorganic particles of the first coating layer are 900 nm or more based on. D50, and the second inorganic particles of the second coating layer are 10 nm or more and 500 nm or less based on D50.

    FLAME RETARDANT SEPARATOR HAVING ASYMMETRIC STRUCTURE FOR SECONDARY BATTERIES
    6.
    发明申请
    FLAME RETARDANT SEPARATOR HAVING ASYMMETRIC STRUCTURE FOR SECONDARY BATTERIES 审中-公开

    公开(公告)号：US20200274128A1

    公开(公告)日：2020-08-27

    申请号：US16646657

    申请日：2019-04-17

    Applicant: LG CHEM, LTD.

    Inventor： Min Ji KIM ,  Kwan Woo NAM ,  Je An LEE ,  Young Bok KIM

    IPC: H01M2/16 ,  H01M4/62 ,  H01M4/131 ,  H01M10/0525

    Abstract: A flame retardant separator for secondary batteries having an asymmetric structure, and more particularly, a flame retardant separator for secondary batteries having an asymmetric structure in which a hydroxide-based inorganic flame retardant is coated on only a surface facing a positive electrode. The present invention provides a separator, which is capable of preventing the risk of lithium ions predominantly precipitated from a negative electrode in a lithium secondary battery, enhancing the flame retardant effect, and maintaining electrochemical properties in contrast with a conventional separator coated with inorganic matters, and a lithium secondary battery including the same.

    SEPARATOR FOR SECONDARY BATTERIES AND ELECTROCHEMICAL DEVICE HAVING THE SAME APPLIED THERETO
    7.
    发明申请
    SEPARATOR FOR SECONDARY BATTERIES AND ELECTROCHEMICAL DEVICE HAVING THE SAME APPLIED THERETO 审中-公开

    公开(公告)号：US20200212400A1

    公开(公告)日：2020-07-02

    申请号：US16634696

    申请日：2018-12-24

    Applicant: LG CHEM, LTD.

    Inventor： Da Kyung HAN ,  Seung Hyun LEE ,  Dong Wook SUNG ,  Je An LEE

    IPC: H01M2/16 ,  H01M10/0525 ,  H01M2/14

    Abstract: A separator for secondary batteries that allows the amount of a dispersing resin that is used and the amount of a dispersant that is used to be reduced in order to prevent an increase in resistance after the separator is coated, which occurs in the case in which a large amount of the dispersing resin is used in order to disperse inorganic matter, and an electrochemical device having the same applied thereto. The amount of a dispersing resin is reduced, whereby it is possible to prevent an increase in resistance after a porous separator is coated, a dispersing resin having a specific weight average molecular weight is mixed, whereby physical properties and dispersivity are improved, and the use of an expensive dispersant is excluded, whereby processing costs are reduced.

    BATTERY SEPARATOR INCLUDING FUNCTIONAL BINDER AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME
    9.
    发明申请
    BATTERY SEPARATOR INCLUDING FUNCTIONAL BINDER AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME 审中-公开

    公开(公告)号：US20190355953A1

    公开(公告)日：2019-11-21

    申请号：US16463441

    申请日：2018-01-05

    Applicant: LG CHEM, LTD.

    Inventor： Kwan Woo NAM ,  Su Jin YOON ,  Hye Jin KWON ,  Chan Jong KIM ,  Je An LEE

    IPC: H01M2/16 ,  H01M2/14

    Abstract: A functional binder and a separator including the functional binder, in which the separator includes a porous polyolefin substrate and an organic-inorganic hybrid porous coating layer formed on at least one surface of the substrate and configured to include a mixture of inorganic particles and a binder compound, thus increasing binder-inorganic material adhesion and substrate-binder adhesion while preventing internal shorting from occurring by performing self-healing of damage to the separator, enhancing the adhesion of the separator to a cathode and an anode, and withstanding the dissolution of a transition metal of a cathode material. The binder contains 10 wt % or more of a hydroxyl group per molecule thereof.

Patent Agency Ranking