Patents by Inventor Sang-Moon Hwang
Sang-Moon Hwang 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: 8409752Abstract: An active material for a battery includes an electrochemically reversibly oxidizable and reducible base material selected from the group consisting of a metal, a lithium-containing alloy, a sulfur-based compound, and a compound that can reversibly form a lithium-containing compound by a reaction with lithium ions and a surface-treatment layer formed on the base material and comprising a compound of the formula MXOk, wherein M is at least one element selected from the group consisting of an alkali metal, an alkaline earth metal, a group 13 element, a group 14 element, a transition metal, and a rare-earth element, X is an element that is capable of forming a double bond with oxygen, k is a numerical value in the range of 2 to 4.Type: GrantFiled: March 19, 2010Date of Patent: April 2, 2013Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Phil Cho, Geun-Bae Kim, Sang-Moon Hwang, Yong-Chul Park, Won-Il Jung
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Patent number: 7968234Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds, which initiates decomposition at 4V to 5V and show a constant current maintenance plateau region of more than or equal to 0.5V at measurement of LSV (linear sweep voltammetry). The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode by increased electrochemical energy and heat at overcharge. The conductive polymer layer prevents decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent during high temperature storage, and also improves safety of the battery during overcharge.Type: GrantFiled: May 18, 2010Date of Patent: June 28, 2011Assignees: Samsung SDI Co., Ltd., Cheil Industries Inc.Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Publication number: 20100227219Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds, which initiates decomposition at 4V to 5V and show a constant current maintenance plateau region of more than or equal to 0.5V at measurement of LSV (linear sweep voltammetry). The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode by increased electrochemical energy and heat at overcharge. The conductive polymer layer prevents decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent during high temperature storage, and also improves safety of the battery during overcharge.Type: ApplicationFiled: May 18, 2010Publication date: September 9, 2010Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Publication number: 20100183922Abstract: An active material for a battery includes an electrochemically reversibly oxidizable and reducible base material selected from the group consisting of a metal, a lithium-containing alloy, a sulfur-based compound, and a compound that can reversibly form a lithium-containing compound by a reaction with lithium ions and a surface-treatment layer formed on the base material and comprising a compound of the formula MXOk, wherein M is at least one element selected from the group consisting of an alkali metal, an alkaline earth metal, a group 13 element, a group 14 element, a transition metal, and a rare-earth element, X is an element that is capable of forming a double bond with oxygen, k is a numerical value in the range of 2 to 4.Type: ApplicationFiled: March 19, 2010Publication date: July 22, 2010Applicant: Samsung SDI Co., LtdInventors: Jae-Phil Cho, Geun-Bae Kim, Sang-Moon Hwang, Yong-Chul Park, Won-Il Jung
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Patent number: 7745054Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds, which initiates decomposition at 4V to 5V and show a constant current maintenance plateau region of more than or equal to 0.5V at measurement of LSV (linear sweep voltammetry). The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode by increased electrochemical energy and heat at overcharge. The conductive polymer layer prevents decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent during high temperature storage, and also improves safety of the battery during overcharge.Type: GrantFiled: April 2, 2004Date of Patent: June 29, 2010Assignees: Samsung SDI Co., Ltd., Cheil Industries, Inc.Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Patent number: 7713659Abstract: An active material for a battery includes an electrochemically reversibly oxidizable and reducible base material selected from the group consisting of a metal, a lithium-containing alloy, a sulfur-based compound, and a compound that can reversibly form a lithium-containing compound by a reaction with lithium ions and a surface-treatment layer formed on the base material and comprising a compound of the formula MXOk, wherein M is at least one element selected from the group consisting of an alkali metal, an alkaline earth metal, a group 13 element, a group 14 element, a transition metal, and a rare-earth element, X is an element that is capable of forming a double bond with oxygen, k is a numerical value in the range of 2 to 4.Type: GrantFiled: August 22, 2006Date of Patent: May 11, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Phil Cho, Geun-Bae Kim, Sang-Moon Hwang, Yong-Chul Park, Won-Il Jung
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Patent number: 7553588Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds. The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode, and prevent decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent at initial charging, and thus reduces an increase of internal pressure and swelling during high temperature storage, and also improves safety of the battery during overcharge.Type: GrantFiled: September 10, 2003Date of Patent: June 30, 2009Assignees: Samsung SDI Co., Ltd., Cheil Industries Inc.Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Patent number: 7255966Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.Type: GrantFiled: July 6, 2005Date of Patent: August 14, 2007Assignee: Samsung SDI Co., LtdInventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim
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Patent number: 7241536Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.Type: GrantFiled: May 8, 2002Date of Patent: July 10, 2007Assignee: Samsung SDI Co., LtdInventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim
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Publication number: 20060281005Abstract: An active material for a battery includes an electrochemically reversibly oxidizable and reducible base material selected from the group consisting of a metal, a lithium-containing alloy, a sulfur-based compound, and a compound that can reversibly form a lithium-containing compound by a reaction with lithium ions and a surface-treatment layer formed on the base material and comprising a compound of the formula MXOk, wherein M is at least one element selected from the group consisting of an alkali metal, an alkaline earth metal, a group 13 element, a group 14 element, a transition metal, and a rare-earth element, X is an element that is capable of forming a double bond with oxygen, k is a numerical value in the range of 2 to 4.Type: ApplicationFiled: August 22, 2006Publication date: December 14, 2006Applicant: Samsung SDI Co., Ltd.Inventors: Jae-Phil Cho, Geun-Bae Kim, Sang-Moon Hwang, Yong-Chul Park, Won-II Jung
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Patent number: 7135251Abstract: An active material for a battery has a surface-treatment layer including a compound of the formula (1): MXOk??(1) wherein M is at least one element selected from an alkali metal, an alkaline earth metal, a group 13 element, a group 14 element, a transition metal, and a rare-earth element, X is an element capable of forming a double bond with oxygen, and k is a numerical value in the range of 2 to 4.Type: GrantFiled: November 29, 2001Date of Patent: November 14, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Phil Cho, Geun-Bae Kim, Sang-Moon Hwang, Yong-Chul Park, Won-Il Jung
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Patent number: 7008728Abstract: An electrolyte for a lithium secondary battery is provided. The electrolyte includes a lithium salt, a non-aqueous organic solvent, and a compound represented by Formula (1): wherein R1, R2, and R3 are each independently selected from the group consisting of hydrogen, primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups. The compound of the present invention is decomposed earlier than an electrolytic organic solvent, and an organic SEI film is formed on a negative electrode, thereby inhibiting the electrolytic organic solvent from decomposing.Type: GrantFiled: April 9, 2002Date of Patent: March 7, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Jin-Sung Kim, Sang-Moon Hwang, Ryuichi Shimizu, Takitaro Yamaguchi, Meen-Seon Paik, Jin-Wook Lee, Cheol-Soo Jung
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Publication number: 20050244719Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.Type: ApplicationFiled: July 6, 2005Publication date: November 3, 2005Inventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim
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Negative electrode for rechargeable lithium battery and rechargeable lithium battery comprising same
Publication number: 20050130040Abstract: The present invention relates to an electrode for a rechargeable lithium battery comprising an emulsion binder, and a lithium secondary battery including the same. The electrode comprises a current collector coated with an active material layer including active material powder, a polyolefinic polymer, and a water-soluble polymer. The polyolefinic polymer binder has better binding properties than a conventional polyvinylidene fluoride, and sufficient adhesion can be realized using a small amount. A decrease in the amount of the binder, which is non-conductive, improves charge-discharge capacity and cycle life characteristics. The polyolefinic polymer has a good crystallization degree and reduces electrode expandability resulting in improved cycle-life characteristics for the electrode.Type: ApplicationFiled: November 15, 2004Publication date: June 16, 2005Inventors: Ho-Jung Yang, Sang-Moon Hwang -
Publication number: 20040259002Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds, which initiates decomposition at 4V to 5V and show a constant current maintenance plateau region of more than or equal to 0.5V at measurement of LSV (linear sweep voltammetry). The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode by increased electrochemical energy and heat at overcharge. The conductive polymer layer prevents decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent during high temperature storage, and also improves safety of the battery during overcharge.Type: ApplicationFiled: April 2, 2004Publication date: December 23, 2004Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Publication number: 20040185347Abstract: An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds. The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode, and prevent decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent at initial charging, and thus reduces an increase of internal pressure and swelling during high temperature storage, and also improves safety of the battery during overcharge.Type: ApplicationFiled: September 10, 2003Publication date: September 23, 2004Applicants: Samsung SDI Co., Ltd., CHEIL INDUSTRIES INC.Inventors: Jin-Hee Kim, Jin-Sung Kim, Sang-Moon Hwang, Meen-Seon Paik, Hak-Soo Kim
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Patent number: 6756155Abstract: Disclosed is a positive active material for a rechargeable lithium battery. The active material includes a cobalt-based compound selected from the group consisting of the compounds represented by the formulas 1 to 4. The active material has a structure of secondary particles with a size of 10 to 30 &mgr;m and the secondary particle is gathered with primary particles with a size of 1 to 5 &mgr;m. The active material includes a metallic oxide coated on the cobalt-based compound. LiCoA2 (1) LiCoO2-xBx (2) LiCo1-xMxA2 (3) LiCo1-xMxO2-yBy (4) where A is selected from the group consisting of O, S, F and P, B is selected from the group consisting of S, F and P, M is a transition metal selected from Al, Mg, Cr or Mn; Sr; or lanthanide metal selected from La or Ce; 0<x<1 and 0<y<1.Type: GrantFiled: February 16, 2000Date of Patent: June 29, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Ho-Jin Kweon, Seung-Kee Kim, Sang-Moon Hwang, Young-Bae Roh
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Publication number: 20030082448Abstract: An active material for a battery has a surface-treatment layer including a compound of the formula (1):Type: ApplicationFiled: November 29, 2001Publication date: May 1, 2003Inventors: Jae-Phil Cho, Geun-Bae Kim, Sang-Moon Hwang, Yong-Chul Park, Won-II Jung
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Publication number: 20030068562Abstract: An electrolyte for a lithium secondary battery is provided.Type: ApplicationFiled: April 9, 2002Publication date: April 10, 2003Inventors: Jin-Sung Kim, Sang-Moon Hwang, Ryuichi Shimizu, Takitaro Yamaguchi, Meen-Seon Paik, Jin-Wook Lee, Cheol-Soo Jung
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Publication number: 20020197537Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided.Type: ApplicationFiled: May 8, 2002Publication date: December 26, 2002Inventors: Jin-Sung Kim, Meen-Seon Paik, Jung-Joon Park, Young-Gyu Kim, Jong-Seob Kim, Hak-Soo Kim, Sang-Jun Lee, Jae-Hou Nah, Sang-Moon Hwang, Chan-Jung Kim