Patents by Inventor Byoung-Jin Shin

Byoung-Jin Shin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150303003
    Abstract: The present disclosure provides a separator comprising a porous substrate, a porous coating layer and a binder layer, the binder comprising at least one homopolylmer of polyvinylidene fluoride and at least one copolymer of polyvinylidene fluoride (PVDF)-co-hexafluoropropylene (HFP) so that a content difference of hexafluoropropylene (HFP) present in the two compounds is about 3 wt % or higher.
    Type: Application
    Filed: April 20, 2015
    Publication date: October 22, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Jeong-Min Ha, Su-Jin Yoon, Jong-Hun Kim, Byoung-Jin Shin, Joo-Sung Lee, Jin-Woo Kim, Da-Kyung Han
  • Patent number: 9005795
    Abstract: A separator includes a planar non-woven fabric substrate having a plurality of pores, and a porous coating layer provided on at least one surface of the non-woven fabric substrate and made of a mixture of a plurality of inorganic particles and a binder polymer, wherein the non-woven fabric substrate is made of superfine fibers having an average thickness of 0.5 to 10 ?m, and wherein, among the pores in the non-woven fabric substrate, pores having a wide diameter of 0.1 to 70 ?m are 50% or above of the entire pores. The above separator having the porous coating layer may generate the generation of leak current without increasing a loading weight of the porous coating layer since the non-woven fabric substrate having a controlled pore side by using superfine fibers of a predetermined thickness is used.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: April 14, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Pil-Kyu Park, Jong-Hun Kim, Jang-Hyuk Hong, Byoung-Jin Shin, In-Chul Kim
  • Publication number: 20140342238
    Abstract: Disclosed is a method of manufacturing a porous separator including an elastic material, and a separator manufactured by the method. The separator includes an elastic material being uniformly dispersed in a polymer at a weight ratio of 40:60 to 5:95, and a value of elongation at break in a low tensile strength direction at room temperature is greater than or equal to 250%. In addition, the method of manufacturing a porous separator includes forming an extruded sheet by extruding a mixture of a polymer and an elastic material at a weight ratio of 95:5 to 60:40, forming a film by annealing and stretching the extruded sheet, and forming a porous separator by heat setting the stretched film. Accordingly, a thermal shrinkage ratio of the film is reduced and an elongation at break is greatly increased, to provide a porous separator with improved stability.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 20, 2014
    Inventors: Joo-Sung Lee, Byoung-Jin Shin, Dong-Wook Sung, Jong-Hun Kim
  • Publication number: 20130260208
    Abstract: The present invention provides a separator having a porous substrate; and a porous coating layer formed on one surface of the porous substrate and comprising a mixture of inorganic particles and a binder polymer, which has a value of a porosity×an air permeability per thickness in the range of 5 to 40, the porosity and the air permeability per thickness. The separator having a porous coating layer according to the present invention has a porosity which is controlled depending on the air permeability of the porous substrate, and thus exhibit superior ionic conductivity as well as good mechanical properties, thereby contributing to improve the performance and safety of an electrochemical device.
    Type: Application
    Filed: May 28, 2013
    Publication date: October 3, 2013
    Applicant: LG Chem, Ltd.
    Inventors: Byeong-Gyu Cho, Jeong-Min Ha, Su-Jin Yoon, Jong-Hun Kim, Byoung-Jin Shin
  • Patent number: 8426053
    Abstract: Disclosed is a method for manufacturing a separator. The method includes (S1) preparing a slurry containing inorganic particles dispersed therein and a solution of a binder polymer in a solvent, and coating the slurry on at least one surface of a porous substrate to form a first porous coating layer, and (S2) electroprocessing a polymer solution on the outer surface of the first porous coating layer to form a second porous coating layer. The first porous coating layer formed on at least one surface of the porous substrate is composed of a highly thermally stable inorganic material to suppress short-circuiting between an anode and a cathode even when an electrochemical device is overheated. The second porous coating layer formed by electroprocessing improves the bindability of the separator to other base materials of the electrodes.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 23, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Joo-Sung Lee, Byoung-Jin Shin, Jong-Hun Kim
  • Patent number: 8343388
    Abstract: Disclosed are an electrode having a porous active coating layer, a manufacturing method thereof and an electrochemical device containing the same. The electrode having a porous active coating layer according to the present invention may be useful to enhance peeling and scratch resistances of the porous active layer and improve a lamination characteristic toward the porous active layer by introducing a porous active layer onto a porous substrate having pores, the porous active layer having heterogeneity of morphology toward a thickness direction in which a content ratio of the binder polymer/inorganic particles present in a surface layer is higher than that of the binder polymer/inorganic particles present inside the surface layer. Accordingly, the stability and performances of the battery can be improved at the same time since the detachment of the inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: January 1, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Sang-Young Lee, Seok-Koo Kim, Jong-Hyeok Park, Jang-Hyuk Hong, Byoung-Jin Shin
  • Publication number: 20120244292
    Abstract: A method for manufacturing an electrode may include (S1) preparing a sol solution containing a metal alkoxide compound, and (S2) forming a porous non-woven coating layer of an inorganic fiber by electroemitting the sol solution onto an outer surface of an electrode active material layer formed on at least one surface of a current collector. The porous non-woven coating layer formed on the outer surface of the electrode active material layer may be made from an inorganic fiber having excellent thermal stability. When an electrochemical device is overheated, the porous non-woven coating layer may contribute to suppression of a short circuit between a cathode and an anode and performance improvement of an electrochemical device due to uniform distribution of pores.
    Type: Application
    Filed: June 8, 2012
    Publication date: September 27, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Joo-Sung Lee, Jong-Hun Kim, Pil-Kyu Park, Jang-Hyuk Hong, Byoung-Jin Shin, Byeong-Gyu Cho, Sun-Mi Jin, In-Chul Kim, Su-Jin Yoon
  • Publication number: 20120015254
    Abstract: Disclosed is a method for manufacturing a separator. The method includes (S1) preparing a slurry containing inorganic particles dispersed therein and a solution of a binder polymer in a solvent, and coating the slurry on at least one surface of a porous substrate to form a first porous coating layer, and (S2) electroprocessing a polymer solution on the outer surface of the first porous coating layer to form a second porous coating layer. The first porous coating layer formed on at least one surface of the porous substrate is composed of a highly thermally stable inorganic material to suppress short-circuiting between an anode and a cathode even when an electrochemical device is overheated. The second porous coating layer formed by electroprocessing improves the bindability of the separator to other base materials of the electrodes.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Joo-Sung Lee, Byoung-Jin Shin, Jong-Hun Kim
  • Publication number: 20120003545
    Abstract: A method for manufacturing an electrode may include (S1) preparing a sol solution containing a metal alkoxide compound, and (S2) forming a porous non-woven coating layer of an inorganic fiber by electroemitting the sol solution onto an outer surface of an electrode active material layer formed on at least one surface of a current collector. The porous non-woven coating layer formed on the outer surface of the electrode active material layer may be made from an inorganic fiber having excellent thermal stability. When an electrochemical device is overheated, the porous non-woven coating layer may contribute to suppression of a short circuit between a cathode and an anode and performance improvement of an electrochemical device due to uniform distribution of pores.
    Type: Application
    Filed: September 9, 2011
    Publication date: January 5, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Joo Sung Lee, Jong-Hun Kim, Pil-Kyu Park, Jang-Hyuk Hong, Byoung-Jin Shin, Byeong-Gyu Cho, Sun-Mi Jin, In-Chul Kim, Su-Jin Yoon
  • Publication number: 20110305941
    Abstract: A separator includes a planar non-woven fabric substrate having a plurality of pores, and a porous coating layer provided on at least one surface of the non-woven fabric substrate and made of a mixture of a plurality of inorganic particles and a binder polymer, wherein the non-woven fabric substrate is made of superfine fibers having an average thickness of 0.5 to 10 ?m, and wherein, among the pores in the non-woven fabric substrate, pores having a wide diameter of 0.1 to 70 ?m are 50% or above of the entire pores. The above separator having the porous coating layer may generate the generation of leak current without increasing a loading weight of the porous coating layer since the non-woven fabric substrate having a controlled pore side by using superfine fibers of a predetermined thickness is used.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 15, 2011
    Inventors: Pil-Kyu Park, Jong-Hun Kim, Jang-Hyuk Hong, Byoung-Jin Shin, In-Chul Kim
  • Publication number: 20100316903
    Abstract: A separator includes a porous substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a binder and a plurality of inorganic particles, wherein the binder includes a crosslinked binder. This separator may improve high temperature cycle performance, discharge characteristics and thermal resistance of an electrochemical device since the separator exhibits improved insolubility and impregnation to electrolyte and improved thermal resistance.
    Type: Application
    Filed: November 25, 2008
    Publication date: December 16, 2010
    Inventors: Jong-Hun Kim, Sang-Young Lee, Pil-Kyu Park, Jang-Hyuk Hong, Byoung-Jin Shin, In-Chul Kim
  • Patent number: 7709152
    Abstract: An organic/inorganic composite separator includes (a) a polyolefin porous substrate having pores; and (b) a porous active layer containing a mixture of inorganic particles and a binder polymer, with which at least one surface of the polyolefin porous substrate is coated, wherein the porous active layer has a peeling force of 5 gf/cm or above, and a thermal shrinkage of the separator after being left alone at 150° C. for 1 hour is 50% or below in a machine direction (MD) or in a transverse direction (TD). This organic/inorganic composite separator solves the problem that inorganic particles in the porous active layer formed on the porous substrate are extracted during an assembly process of an electrochemical device, and also it may prevent an electric short circuit between cathode and anode even when the electrochemical device is overheated.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: May 4, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Seok-Koo Kim, Joon-Yong Sohn, Jong-Hyeok Park, Hyun-Min Jang, Byoung-Jin Shin, Sang-Young Lee, Jang-Hyuk Hong
  • Publication number: 20090305141
    Abstract: Disclosed are an electrode having a porous active coating layer, a manufacturing method thereof and an electrochemical device containing the same. The electrode having a porous active coating layer according to the present invention may be useful to enhance peeling and scratch resistances of the porous active layer and improve a lamination characteristic toward the porous active layer by introducing a porous active layer onto a porous substrate having pores, the porous active layer having heterogeneity of morphology toward a thickness direction in which a content ratio of the binder polymer/inorganic particles present in a surface layer is higher than that of the binder polymer/inorganic particles present inside the surface layer. Accordingly, the stability and performances of the battery can be improved at the same time since the detachment of the inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.
    Type: Application
    Filed: March 6, 2007
    Publication date: December 10, 2009
    Applicant: LG Chem, Ltd.
    Inventors: Sang-Young Lee, Seok-Koo Kim, Jong-Hyeok Park, Jang-Hyuk Hong, Byoung-Jin Shin
  • Publication number: 20090111026
    Abstract: An organic/inorganic composite separator includes (a) a polyolefin porous substrate having pores; and (b) a porous active layer containing a mixture of inorganic particles and a binder polymer, with which at least one surface of the polyolefin porous substrate is coated, wherein the porous active layer has a peeling force of 5 gf/cm or above, and a thermal shrinkage of the separator after being left alone at 150° C. for 1 hour is 50% or below in a machine direction (MD) or in a transverse direction (TD). This organic/inorganic composite separator solves the problem that inorganic particles in the porous active layer formed on the porous substrate are extracted during an assembly process of an electrochemical device, and also it may prevent an electric short circuit between cathode and anode even when the electrochemical device is overheated.
    Type: Application
    Filed: February 5, 2008
    Publication date: April 30, 2009
    Inventors: Seok-Koo Kim, Joon-Yong Sohn, Jong-Hyeok Park, Hyun-Min Jang, Byoung-Jin Shin, Sang-Young Lee, Jang-Hyuk Hong