Patents by Inventor Jae-yul Ryu
Jae-yul Ryu 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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Patent number: 9287585Abstract: An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1: wherein n ranges from 1 to 12 and R1 and R2 are independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CmH(2m+1), in which m ranges from 1 to 10. The electrolyte for a rechargeable lithium battery improves storage stability of the rechargeable lithium battery at a high temperature. And, a rechargeable lithium battery including the electrolyte has improved storage stability.Type: GrantFiled: December 4, 2014Date of Patent: March 15, 2016Assignee: Samsung SDI Co., Ltd.Inventors: Euy-Young Jung, Duck-Chul Hwang, Jong-Hwa Lee, In-Tae Mun, Sae-Weon Roh, So-Hyun Hur, Yong-Chul Park, Jeom-Soo Kim, Jae-Yul Ryu
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Patent number: 9269985Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.Type: GrantFiled: August 8, 2012Date of Patent: February 23, 2016Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Yul Ryu, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Wan-Uk Choi, Young-Ugk Kim, Chang-Keun Back, Seung-Hee Park, Yong-Bum Lee
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Publication number: 20150093602Abstract: An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1: wherein n ranges from 1 to 12 and R1 and R2 are independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CmH(2m+1), in which m ranges from 1 to 10. The electrolyte for a rechargeable lithium battery improves storage stability of the rechargeable lithium battery at a high temperature. And, a rechargeable lithium battery including the electrolyte has improved storage stability.Type: ApplicationFiled: December 4, 2014Publication date: April 2, 2015Inventors: Euy-Young Jung, Duck-Chul Hwang, Jong-Hwa Lee, In-Tae Mun, Sae-Weon Roh, So-Hyun Hur, Yong-Chul Park, Jeom-Soo Kim, Jae-Yul Ryu
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Patent number: 8980474Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiOx (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.Type: GrantFiled: March 29, 2012Date of Patent: March 17, 2015Assignee: Samsung SDI Co., Ltd.Inventors: Tae-Gon Kim, Hee-Joon Chun, Joon-Sup Kim, Wan-Uk Choi, Hisaki Tarui, Jea-Woan Lee, Jae-Yul Ryu, Young-Chang Lim, Seung-Hee Park
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Patent number: 8906559Abstract: An electrolyte for a rechargeable lithium battery includes a non-aqueous organic solvent; a lithium salt; and an additive including vinylene carbonate, fluoroethylene carbonate, and a nitrile-based compound represented by Formula 1: wherein n ranges from 1 to 12 and R1 and R2 are independently a halogen, a hydrogen, or an alkyl group. Further, the alkyl group can be CmH(2m+1), in which m ranges from 1 to 10. The electrolyte for a rechargeable lithium battery improves storage stability of the rechargeable lithium battery at a high temperature. And, a rechargeable lithium battery including the electrolyte has improved storage stability.Type: GrantFiled: June 19, 2007Date of Patent: December 9, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Euy-Young Jung, Duck-Chul Hwang, Jong-Hwa Lee, In-Tae Mun, Sae-Weon Roh, So-Hyun Hur, Yong-Chul Park, Jeom-Soo Kim, Jae-Yul Ryu
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Patent number: 8808915Abstract: The rechargeable lithium battery includes a positive electrode which includes a positive active material, a negative electrode, and an electrolyte which includes a non-aqueous organic solvent and a lithium salt. The positive active material includes a core including at least one of a compound represented by Formula 1 and a compound represented by Formula 2, and a surface-treatment layer which is formed on the core and includes a compound represented by Formula 3. The lithium salt includes LiPF6 and a lithium imide-based compound. LiaNibCocMndMeO2??(1) LihMn2MiO4??(2) M?xPyOz??(3) wherein each of M and M? is independently selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element, a rare earth element, and combinations thereof, 0.95?a?1.1, 0?b?0.999, 0?c?0.999, 0?d?0.999, 0.001?e?0.2, 0.95?h?1.1, 0.001?i?0.2, 1?y?4, 0?y?7, and 2?z?30.Type: GrantFiled: August 10, 2007Date of Patent: August 19, 2014Assignee: Samsung SDI Co., Ltd.Inventors: So-Hyun Hur, Euy-Young Jung, Duck-Chul Hwang, Yong-Chul Park, Jong-Hwa Lee, Jeom-Soo Kim, Jae-Yul Ryu, Jin-Bum Kim
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Patent number: 8808918Abstract: The rechargeable lithium battery of the present invention includes a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte. The positive active material includes a core and a coating layer formed on the core. The core is made of a material such as LiCo0.98M?0.02O2, and the coating layer is made of a material such as MxPyOz. The electrolyte solution includes a nitrile-based additive. The rechargeable lithium battery of the present invention shows higher cycle-life characteristics and longer continuous charging time at high temperature.Type: GrantFiled: June 12, 2007Date of Patent: August 19, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Euy-Young Jung, Duck-Chul Hwang, Jeom-Soo Kim, Jong-Hwa Lee, Yong-Chul Park, Jae-Yul Ryu, So-Hyun Hur
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Patent number: 8802300Abstract: A rechargeable lithium battery including a positive electrode including a positive active material, a negative electrode including a negative active material, and a non-aqueous electrolyte including a non-aqueous organic solvent and a lithium salt. The positive electrode has an active-mass density of about 3.7 to 4.1 g/cc, and the non-aqueous electrolyte includes a nitrile-based compound additive, a non-aqueous organic solvent, and a lithium salt.Type: GrantFiled: October 23, 2007Date of Patent: August 12, 2014Assignee: Samsung SDI Co., Ltd.Inventors: Jong-Hwa Lee, Duck-Chul Hwang, Jeom-Soo Kim, Yong-Chul Park, Jae-Yul Ryu, Euy-Young Jung, So-Hyun Hur
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Publication number: 20130052533Abstract: In one aspect, a negative active material for a lithium secondary battery including silicon oxide represented by a chemical formula SiOx (1.1<x<1.5) and a negative electrode and a lithium secondary battery including the negative active material is provided. The silicon oxide may be amorphous silicon oxide.Type: ApplicationFiled: February 8, 2012Publication date: February 28, 2013Applicant: Samsung SDI Co., Ltd.Inventors: Hee-Joon Chun, Tae-Gon Kim, Joon-Sup Kim, Wan-Uk Choi, Tarui Hisaki, Jea-Woan Lee, Jae-Yul Ryu, Chang-Keun Back, Young-Chang Lim, Seung-Hee Park
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Publication number: 20130052508Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiOx (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.Type: ApplicationFiled: March 29, 2012Publication date: February 28, 2013Inventors: Tae-Gon Kim, Hee-Joon Chun, Joon-Sup Kim, Wan-Uk Choi, Hisaki Tarui, Jea-Woan Lee, Jae-Yul Ryu, Young-Chang Lim, Seung-Hee Park
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Publication number: 20130045419Abstract: Provided are a negative active material for a rechargeable lithium battery, which includes a first silicon oxide (SiOx) and a second silicon oxide (SiOx) with a particle diameter differing from the one of the first silicon oxide (SiOx), a negative electrode including the negative active material, and a method of manufacturing the negative electrode, and a rechargeable lithium battery including the negative electrode. The first silicon oxide (SiOx) and second silicon oxide (SiOx) have a particle distribution peak area ratio ranging from 3 to 8.Type: ApplicationFiled: December 19, 2011Publication date: February 21, 2013Inventors: Hee-Joon Chun, Tae-Gon Kim, Joon-Sup Kim, Wan-Uk Choi, Hisaki Tarui, Jea-Woan Lee, Jae-Yul Ryu, Chang-Keun Back, Young-Chang Lim, Seung-Hee Park
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Publication number: 20120301792Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.Type: ApplicationFiled: August 8, 2012Publication date: November 29, 2012Applicant: SAMSUNG SDI CO., LTD.Inventors: Jae-Yul Ryu, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Wan-Uk Choi, Young-Ugk Kim, Chang-Keun Back, Seung-Hee Park, Yong-Bum Lee
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Patent number: 8268487Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.Type: GrantFiled: August 20, 2010Date of Patent: September 18, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Yul Ryu, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Wan-Uk Choi, Young-Ugk Kim, Chang-Keun Back, Seung-Hee Park, Yong-Bum Lee
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Patent number: 8268486Abstract: A positive electrode includes a current collector and a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material including a core including a compound LiaCO1-bMbO2 and a surface-treatment layer. In the core compound, 0.95?a?1.1, 0.002?b?0.02, and M is one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Sc, Y, Ti, Zr, Hf, Rf, V, Nb, Ta, Db, Cr, Mo, W, Sg, Tc, Re, Bh, Fe, Ru, Os, Hs, Rh, Ir, Pd, Pt, Cu, Ag, Au, Zn, Cd, B, Al, Ga, In, Tl, Si, Ge, Sn, P, As, Sb, Bi, S, Se, Te, Po. The surface-treatment layer includes a compound including element of P, and one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Sc, Y, Ti, Zr, Hf, Rf, V, Nb, Ta, Db, Cr, Mo, W, Sg, Tc, Re, Bh, Fe, Ru, Os, Hs, Rh, Ir, Pd, Pt, Cu, Ag, Au, Zn, Cd, B, Al, Ga, In, Tl, Si, Ge, Sn, As, Sb, Bi, S, Se, Te, Po.Type: GrantFiled: August 16, 2007Date of Patent: September 18, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Duck-Chul Hwang, Yong-Chul Park, Jeom-Soo Kim, Jae-Yul Ryu, Jong-Hwa Lee, Euy-Young Jung, So-Hyun Hur
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Publication number: 20110293991Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a silicon-based negative active material, an electrolyte including a lithium salt and a non-aqueous organic solvent, and a separator including a polymer substrate and a ceramic-containing coating layer on the polymer substrate. The ceramic-containing coating layer has a porosity at or between about 50% and about 90%, and a thickness at or between about 2 ?m and about 6 ?m. The rechargeable lithium battery has a capacity per volume of more than or equal to about 700 Wh/l.Type: ApplicationFiled: February 14, 2011Publication date: December 1, 2011Inventors: Jae-Yul Ryu, Wan-Uk Choi, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Chang-Keun Back, Young-Ugk Kim, Seung-Hee Park
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Publication number: 20110293990Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a silicon-based negative active material, an electrolyte including a lithium salt and a non-aqueous organic solvent, and a separator including a polymer substrate and a ceramic-containing coating layer on the polymer substrate. The ceramic-containing coating layer has a porosity at or between about 50% and about 90%, and a thickness at or between about 2 ?m and about 6 ?m. The rechargeable lithium battery has a capacity per volume of more than or equal to about 700 Wh/l.Type: ApplicationFiled: November 19, 2010Publication date: December 1, 2011Inventors: Jae-Yul Ryu, Wan-Uk Choi, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Chang-Keun Back, Young-Ugk Kim, Seung-Hee Park
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Patent number: 8003252Abstract: An electrode, for a rechargeable lithium battery, including a current collector; an active material layer disposed on the current collector; and a coating layer disposed on the active material layer. The coating layer includes a lithium ion conductive polymer and an inorganic material represented by Formula 1: MwHxPyOz, wherein M is an element selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element, a rare earth element, and a combination thereof; and 1?w?4, 0?x?4, 1 ?y?7, and 2?z?30.Type: GrantFiled: May 22, 2007Date of Patent: August 23, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Euy-Young Jung, Duck-Chul Hwang, Yong-Chul Park, Jeom-Soo Kim, Jong-Hwa Lee, Jae-Yul Ryu, So-Hyun Hur
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Publication number: 20110123849Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.Type: ApplicationFiled: August 20, 2010Publication date: May 26, 2011Applicant: SAMSUNG SDI CO., LTD.,Inventors: Jae-Yul Ryu, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Wan-Uk Choi, Young-Ugk Kim, Chang-Keun Back, Seung-Hee Park, Yong-Bum Lee
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Patent number: 7927727Abstract: A secondary battery may be manufactured with an electrode assembly having a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. A container encases the electrode assembly. A hole formed on one end of the container with a stepped configuration that opens with different diameters on opposite sides of a cap plate and a safety valve mounted in the stepped surface of the hole, is configured to rupture and tear open upon occurrence of a predetermined internal battery pressure.Type: GrantFiled: June 23, 2005Date of Patent: April 19, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Yong-Sam Kim, Ki-Ho Kim, Jae-Yul Ryu, Jae-Kyung Kim
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Patent number: 7923149Abstract: A positive electrode including a current collector; a positive active material layer disposed on the current collector; and a coating layer disposed on the positive active material layer. The coating layer includes a binder and a inorganic additive. The binder is a poly(vinylidenefluoride-hexafluoropropylene) copolymer comprising 2 to 16 mole % of hexafluoropropylene. The positive electrode for a rechargeable lithium battery suppresses side-reactions between a positive electrode and an electrolyte, at a high voltage.Type: GrantFiled: November 14, 2007Date of Patent: April 12, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Duck-Chul Hwang, Yong-Chul Park, Jeom-Soo Kim, Jae-Yul Ryu, Jong-Hwa Lee, Euy-Young Jung, So-Hyun Hur