Patents by Inventor Joon-Yong Sohn
Joon-Yong Sohn 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).
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Publication number: 20200143952Abstract: The present invention relates to a technology for treating radioactive liquid waste containing a hardly degradable compound, and more specifically, to a technology for treating radioactive liquid waste containing a material such as an organic decontamination agent, an inorganic decontamination agent, liquid scintillation counter liquid waste, and the like generated at nuclear power plants, nuclear facilities, facilities at which radiation (radioactivity) is used, and the like. The method for treating radioactive liquid waste of the present invention includes adding two or more selected from the group consisting of a metal ion, an oxidizing agent, air, oxygen, or nitrous oxide, and a semiconductor to radioactive liquid waste to prepare a pre-treatment solution, and irradiating the pre-treatment solution with radiation.Type: ApplicationFiled: November 5, 2019Publication date: May 7, 2020Applicant: Korea Atomic Energy Research InstituteInventors: Seung Joo Lim, Tak Hyun Kim, Kang Lee, Dong Woo Kim, Joon Pyo Jeun, In Tae Hwang, Joon Yong Sohn, Kyung Hoon Jeong
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Patent number: 9922773Abstract: The present invention provides an ionic polymer membrane prepared by irradiating the compound represented by formula 1 and an ionic polymer. The ionic polymer membrane of the present invention has the advantage of excellent processability, low production costs, high ion exchange capacity and high durability. Also, the method for preparing the ionic polymer membrane of the invention not only facilitates the production of the ionic polymer membrane in a 3-dimensional network structure which has high ion exchange capacity and high dimensional stability but also makes it easy to produce membranes in various forms and sizes by using the composition itself as a coating solution with using the commercialized inexpensive ionic polymer without additional high-risk multi-step introduction process of ionic exchange group.Type: GrantFiled: June 10, 2016Date of Patent: March 20, 2018Assignee: Korea Atomic Energy Research InstituteInventors: Chan Hee Jung, Junhwa Shin, In Tae Hwang, Joon Yong Sohn, Chang-Hee Jung
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Patent number: 9790339Abstract: Provided is a method of preparing a crosslinked sulfonated poly(ether ether ketone) (SPEEK) cation exchange membrane including: preparing a crosslinker mixture of a first crosslinker containing two or more vinyl oxy groups and a second crosslinker containing three or more vinyl groups; preparing a mother liquor containing the crosslinker mixture, a SPEEK polymer substituted with sodium, and a solvent; and casting the mother liquor and then irradiating radiation thereon.Type: GrantFiled: May 28, 2014Date of Patent: October 17, 2017Assignee: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Junhwa Shin, Joon Yong Sohn, Ju-Myung Song, Sun-Young Lee, Hyun-Su Woo
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Publication number: 20170098511Abstract: The present invention provides an ionic polymer membrane prepared by irradiating the compound represented by formula 1 and an ionic polymer. The ionic polymer membrane of the present invention has the advantage of excellent processability, low production costs, high ion exchange capacity and high durability. Also, the method for preparing the ionic polymer membrane of the invention not only facilitates the production of the ionic polymer membrane in a 3-dimensional network structure which has high ion exchange capacity and high dimensional stability but also makes it easy to produce membranes in various forms and sizes by using the composition itself as a coating solution with using the commercialized inexpensive ionic polymer without additional high-risk multi-step introduction process of ionic exchange group.Type: ApplicationFiled: June 10, 2016Publication date: April 6, 2017Applicant: Korea Atomic Energy Research InstituteInventors: Chan Hee Jung, Junhwa Shin, In Tae Hwang, Joon Yong Sohn, Chang-Hee Jung
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Publication number: 20150133570Abstract: Provided is a method of preparing a crosslinked sulfonated poly(ether ether ketone) (SPEEK) cation exchange membrane including: preparing a crosslinker mixture of a first crosslinker containing two or more vinyl oxy groups and a second crosslinker containing three or more vinyl groups; preparing a mother liquor containing the crosslinker mixture, a SPEEK polymer substituted with sodium, and a solvent; and casting the mother liquor and then irradiating radiation thereon.Type: ApplicationFiled: May 28, 2014Publication date: May 14, 2015Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTEInventors: Junhwa SHIN, Joon Yong SOHN, Ju-Myung SONG, Sun-Young LEE, Hyun-Su WOO
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Patent number: 8741470Abstract: An electrochemical device includes a plurality of unit cells, each having a first separator and a cathode and an anode positioned at both sides of the first separator, and a continuous single second separator interposed between adjacent unit cells in correspondence with each other in a laminated pattern and arranged to surround each unit cell. The first separator includes a heat-resisting porous substrate having a melt point of 200° C. or above and a first porous coating layer formed on at least one surface of the heat-resisting porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer. The second separator includes a polyolefin porous substrate and a second porous coating layer formed on at least one surface of the polyolefin porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer.Type: GrantFiled: April 22, 2008Date of Patent: June 3, 2014Assignee: LG Chem, Ltd.Inventors: Jong-Hun Kim, Hyun-Min Jang, Jang-Hyuk Hong, Joon-Yong Sohn, Sang-Young Lee
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Patent number: 8318360Abstract: The present invention provides an organic/inorganic composite porous separator, which comprises: (a) a porous substrate having pores; and (b) an organic/inorganic composite layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic porous particles and a binder polymer, wherein the inorganic porous particles have a plurality of macropores with a diameter of 50 nm or greater in the particle itself thereby form a pore structure, a manufacturing method thereof, and an electrochemical device using the same. As an additional pathway for lithium ions is created due to a number of pores existing in the inorganic porous particle itself, degradation in the battery performance can be minimized, and energy density per unit weight can be increased by the weight loss effect.Type: GrantFiled: November 1, 2010Date of Patent: November 27, 2012Assignee: LG Chem, Ltd.Inventors: Dae Jong Seo, Seok Koo Kim, Jang Hyuk Hong, Joon Yong Sohn, Sang Young Lee, Soon Ho Ahn
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Publication number: 20110045168Abstract: The present invention provides an organic/inorganic composite porous separator, which comprises: (a) a porous substrate having pores; and (b) an organic/inorganic composite layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic porous particles and a binder polymer, wherein the inorganic porous particles have a plurality of macropores with a diameter of 50 nm or greater in the particle itself thereby form a pore structure, a manufacturing method thereof, and an electrochemical device using the same. As an additional pathway for lithium ions is created due to a number of pores existing in the inorganic porous particle itself, degradation in the battery performance can be minimized, and energy density per unit weight can be increased by the weight loss effect.Type: ApplicationFiled: November 1, 2010Publication date: February 24, 2011Applicant: LG CHEM, LTD.Inventors: Dae Jong SEO, Seok Koo KIM, Jang Hyuk HONG, Joon Yong SOHN, Sang Young LEE, Soon Ho AHN
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Patent number: 7883799Abstract: The present invention provides an organic/inorganic composite porous separator, which comprises: (a) a porous substrate having pores; and (b) an organic/inorganic composite layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic porous particles and a binder polymer, wherein the inorganic porous particles have a plurality of macropores with a diameter of 50 nm or greater in the particle itself thereby form a pore structure, a manufacturing method thereof, and an electrochemical device using the same. As an additional pathway for lithium ions is created due to a number of pores existing in the inorganic porous particle itself, degradation in the battery performance can be minimized, and energy density per unit weight can be increased by the weight loss effect.Type: GrantFiled: November 28, 2006Date of Patent: February 8, 2011Assignee: LG Chem, Ltd.Inventors: Dae Jong Seo, Seok Koo Kim, Jang Hyuk Hong, Joon Yong Sohn, Sang Young Lee, Soon Ho Ahn
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Publication number: 20100261047Abstract: An electrochemical device includes a plurality of unit cells, each having a first separator and a cathode and an anode positioned at both sides of the first separator, and a continuous single second separator interposed between adjacent unit cells in correspondence with each other in a laminated pattern and arranged to surround each unit cell. The first separator includes a heat-resisting porous substrate having a melt point of 200° C. or above and a first porous coating layer formed on at least one surface of the heat-resisting porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer. The second separator includes a polyolefin porous substrate and a second porous coating layer formed on at least one surface of the polyolefin porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer.Type: ApplicationFiled: April 22, 2008Publication date: October 14, 2010Applicant: LG CHEM, LTD.Inventors: Jong-Hun Kim, Hyun-Min Jang, Jang-Hyuk Hong, Joon-Yong Sohn, Sang-Young Lee
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Patent number: 7709152Abstract: 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: GrantFiled: February 5, 2008Date of Patent: May 4, 2010Assignee: 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
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Patent number: 7638241Abstract: Disclosed is an organic/inorganic composite separator including: a porous substrate having pores; and a porous active layer containing a mixture of inorganic particles and a binder polymer with which at least one surface of the porous substrate is coated. The organic/inorganic composite separator of the present invention may be useful to enhance peeling and scratch resistances and improve a lamination characteristic 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 a battery can be improved together since the detachment of inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.Type: GrantFiled: December 6, 2006Date of Patent: December 29, 2009Assignee: LG Chem, Ltd.Inventors: Sang-Young Lee, Dae-Jong Seo, Joon-Yong Sohn, Seok-Koo Kim, Jang-Hyuk Hong, Young-Soo Kim, Hyun-Min Jang
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Publication number: 20090111026Abstract: 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: ApplicationFiled: February 5, 2008Publication date: April 30, 2009Inventors: Seok-Koo Kim, Joon-Yong Sohn, Jong-Hyeok Park, Hyun-Min Jang, Byoung-Jin Shin, Sang-Young Lee, Jang-Hyuk Hong
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Publication number: 20080311479Abstract: Disclosed is an electrode having a current collector coated with an electrode active material, wherein non-coated regions of the electrode and boundary regions of intermittently pattern-coated electrodes are coated with a porous active layer including a mixture of inorganic particles and a binder polymer. The electrode of the present invention may be useful to improve safety of a battery and also minimize reduction in the capacity of a battery by introducing the porous active layer onto non-coated regions of the electrode and/or boundary regions of the intermittently pattern-coated electrodes to prevent internal short circuit caused by the contact between both electrodes, wherein the boundary regions are coated with the electrode active material but vulnerable to the electrical short circuit.Type: ApplicationFiled: December 6, 2006Publication date: December 18, 2008Applicant: LG CHEM, LTD.Inventors: Sang-Young Lee, Dae-Jong Seo, Joon-Yong Sohn, Seok-Koo Kim, Jang-Hyuk Hong, Young-Soo Kim, Hyun- Min Jang
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Publication number: 20080292968Abstract: Disclosed is an organic/inorganic composite separator including: a porous substrate having pores; and a porous active layer containing a mixture of inorganic particles and a binder polymer with which at least one surface of the porous substrate is coated. The organic/inorganic composite separator of the present invention may be useful to enhance peeling and scratch resistances and improve a lamination characteristic 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 a battery can be improved together since the detachment of inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device.Type: ApplicationFiled: December 6, 2006Publication date: November 27, 2008Applicant: LG CHEM, LTD.Inventors: Sang-Young Lee, Dae-Jong Seo, Joon-Yong Sohn, Seok-Koo Kim, Jang-Hyuk Hong, Young-Soo Kim, Hyun-Min Jang