Patents by Inventor Jun-Won Suh
Jun-Won Suh 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: 20230207803Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using a positive electrode comprising the same, and more particularly, to a positive electrode active material which has improved electrochemical properties and improved stability by controlling a pore area and a pore shape of a lithium composite oxide included in the positive electrode active material by adjusting the proportions of ammonia and caustic soda, used in co-precipitation for synthesizing a precursor of the positive electrode active material, and a lithium secondary battery using a positive electrode containing the positive electrode active material.Type: ApplicationFiled: March 2, 2023Publication date: June 29, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Hyung Joo NOH, Jin Kyeong YUN, Mi Hye YUN, Jae Woo JEON, Ju Chul KIM, Ye Ri JANG, Jin Oh SON, Jun Won SUH, Moon Ho CHOI
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Publication number: 20230202863Abstract: The present invention relates to a method of preparing a positive electrode active material for a lithium secondary battery, and more particularly, to a method of preparing a positive electrode active material for a lithium secondary battery, which is able to improve electrochemical properties and stability by controlling the specific surface area of a positive electrode active material.Type: ApplicationFiled: March 1, 2023Publication date: June 29, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Jae Woo JEON, Jun Won SUH, Jin Kyeong YUN, Jin Oh SON, Mi Hye YUN, Moon Ho CHOI, Hyung Joo NOH, Su Bin NA, Ju Chul KIM
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Publication number: 20230197952Abstract: A lithium complex oxide includes a mixture of first particles of n1 (n1>40) aggregated primary particles and second particles of n2 (n2?20) aggregated primary particles, the lithium complex oxide represented by Chemical Formula 1 and having FWHM (deg., 2?) of 104 peak in XRD, defined by a hexagonal lattice having R-3m space group, in a range of Formula 1: LiaNixCoyMnzM1-x-y-zO2, ??[Chemical Formula 1] where M is selected from: B, Ba, Ce, Cr, F, Mg, Al, Cr, V, Ti, Fe, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, P, Sr, and any combination thereof, 0.9?a?1.3, 0.6?x?1.0, 0.0?y?=0.4, 0.0?z?0.4, and 0.0?1-x-y-z?0.4, ?0.025?FWHM(104)?{0.04+(xfirst particle?0.6)×0.25}?0.025, ??[Formula 1] where FWHM(104) is represented by Formula 2, FWHM(104)={(FWHMChemical Formula 1 powder(104)?0.1×mass ratio of second particles)/mass ratio of first particles}?FWHMSi powder (220).Type: ApplicationFiled: February 23, 2023Publication date: June 22, 2023Inventors: Jung Han LEE, Seung Woo CHOI, Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Mi Hye YUN, Kwang Seok CHOI, Joong Ho BAE, Jin Oh SON
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Patent number: 11677065Abstract: The present invention relates to a cathode active material for a lithium secondary battery, and more particularly, to a cathode active material for a lithium secondary battery, which includes a core portion and a shell portion surrounding the core portion, in which a total content of cobalt in the core portion and the shell portion is 5 to 12 mol %, and the content of cobalt in the core portion and the shell portion is adjusted to be within a predetermined range. In the cathode active material precursor and the cathode active material for a secondary battery prepared using the same according to the present invention, optimal capacity of a lithium secondary battery may be increased by adjusting the cobalt content in the particles of the cathode active material, and life characteristics may be enhanced by improving stability.Type: GrantFiled: January 11, 2022Date of Patent: June 13, 2023Assignee: ECOPRO BM CO., LTD.Inventors: Sung Jin Jang, Moon Ho Choi, Jun Won Suh, Jung Han Lee, Ji Hyun Nam, Seung Woo Choi
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Publication number: 20230139863Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery comprising the same, and more specifically, to a positive electrode active material including a lithium composite oxide containing at least nickel and titanium, wherein the titanium is present in an oxide form in at least a portion of the surface of the lithium composite oxide at the same time as being doped in the lithium composite oxide, and thus it is possible to simultaneously improve the output efficiency and high-temperature lifetime characteristics (high-temperature cycle capacity retention rate) of a lithium secondary battery using the positive electrode active material, and a lithium secondary battery including the same.Type: ApplicationFiled: October 12, 2022Publication date: May 4, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Joong Ho BAE, Du Yeol KIM, Moon Ho CHOI, Jun Won SUH, Sun Kyu KIM, Jung Han LEE, Seung Woo CHOI
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Patent number: 11621418Abstract: A lithium complex oxide includes a mixture of first particles of n1 (n1>40) aggregated primary particles and second particles of n2 (n2?20) aggregated primary particles, the lithium complex oxide represented by Chemical Formula 1 and having FWHM (deg., 2?) of 104 peak in XRD, defined by a hexagonal lattice having R-3m space group, in a range of Formula 1: LiaNixCoyMnzM1-x-y-zO2,??[Chemical Formula 1] where M is selected from: B, Ba, Ce, Cr, F, Mg, Al, Cr, V, Ti, Fe, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, P, Sr, and any combination thereof, 0.9?a?1.3, 0.6?x?1.0, 0.0?y?=0.4, 0.0?z?0.4, and 0.0?1?x?y?z?0.4, ?0.025?FWHM(104)?{0.04+(xfirst particle?0.6)×0.25}?0.025,??[Formula 1] where FWHM(104) is represented by Formula 2, FWHM(104)={(FWHMChemical Formula 1 powder(104)?0.1×mass ratio of second particles)/mass ratio of first particles}?FWHMSi powder(220).Type: GrantFiled: October 30, 2020Date of Patent: April 4, 2023Assignee: ECOPRO BM CO., LTD.Inventors: Jung Han Lee, Seung Woo Choi, Moon Ho Choi, Jun Won Suh, Jin Kyeong Yun, Mi Hye Yun, Kwang Seok Choi, Joong Ho Bae, Jin Oh Son
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Patent number: 11588154Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.Type: GrantFiled: November 11, 2020Date of Patent: February 21, 2023Assignee: ECOPRO BM CO., LTD.Inventors: Moon Ho Choi, Seung Woo Choi, Jun Won Suh, Jin Kyeong Yun, Jung Han Lee, Gwang Seok Choe, Joong Ho Bae, Du Yeol Kim
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Publication number: 20220140315Abstract: The present invention relates to a cathode active material for a lithium secondary battery, and more particularly, to a cathode active material for a lithium secondary battery, which includes a core portion and a shell portion surrounding the core portion, in which a total content of cobalt in the core portion and the shell portion is 5 to 12 mol %, and the content of cobalt in the core portion and the shell portion is adjusted to be within a predetermined range. In the cathode active material precursor and the cathode active material for a secondary battery prepared using the same according to the present invention, optimal capacity of a lithium secondary battery may be increased by adjusting the cobalt content in the particles of the cathode active material, and life characteristics may be enhanced by improving stability.Type: ApplicationFiled: January 11, 2022Publication date: May 5, 2022Inventors: Sung Jin JANG, Moon Ho CHOI, Jun Won SUH, Jung Han LEE, Ji Hyun NAM, Seung Woo CHOI
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Publication number: 20220131143Abstract: The present invention relates to a positive electrode active material which makes it possible to improve the electrochemical properties and stability of a positive electrode active material including a lithium composite oxide by adjusting the direction of a concentration gradient of a metal element of the lithium composite oxide, and a lithium secondary battery using a positive electrode including the positive electrode active material.Type: ApplicationFiled: July 22, 2021Publication date: April 28, 2022Applicant: ECOPRO BM CO., LTD.Inventors: Gwang Seok CHOI, Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Seung Woo CHOI, Joong Ho BAE, Du Yeol KIM
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Patent number: 11258055Abstract: The present invention relates to a cathode active material for a lithium secondary battery, and more particularly, to a cathode active material for a lithium secondary battery, which includes a core portion and a shell portion surrounding the core portion, in which a total content of cobalt in the core portion and the shell portion is 5 to 12 mol %, and the content of cobalt in the core portion and the shell portion is adjusted to be within a predetermined range. In the cathode active material precursor and the cathode active material for a secondary battery prepared using the same according to the present invention, optimal capacity of a lithium secondary battery may be increased by adjusting the cobalt content in the particles of the cathode active material, and life characteristics may be enhanced by improving stability.Type: GrantFiled: November 21, 2018Date of Patent: February 22, 2022Assignee: ECOPRO BM CO., LTD.Inventors: Sung Jin Jang, Moon Ho Choi, Jun Won Suh, Jung Han Lee, Ji Hyun Nam, Seung Woo Choi
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Publication number: 20210399297Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a bimodal-type positive electrode active material that includes a first lithium composite oxide which is a small particle and a second lithium composite oxide which is a large particle, which have different average particle diameters, thereby improving an increasing deviation of an average particle diameter and degraded impedance and lifetime characteristics due to excessive calcination for any one of the small and large particles during simultaneous calcination, a positive electrode including the same, and a lithium secondary battery using the same.Type: ApplicationFiled: April 7, 2021Publication date: December 23, 2021Applicant: ECOPRO BM CO., LTD.Inventors: Moon Ho CHOI, Gwang Seok CHOE, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Seung Woo CHOI, Joong Ho BAE, Du yeol KIM
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Patent number: 11063250Abstract: The present invention relates to a cathode active material composition for a lithium secondary battery and a lithium secondary battery including the same, and more particularly, to a cathode active material composition for a lithium secondary battery, including a mixture of particles which are different in Ni composition and size and prepared at the same heat treatment temperature, and a lithium secondary battery including the same. According to the present invention, optimal capacity manifestation temperatures of a coarse particle and a fine particle may be adjusted to be similar by adjusting an Ni content of the coarse particle and the fine particle, and thus, a lithium secondary battery having enhanced output and lifetime may be manufactured.Type: GrantFiled: November 15, 2018Date of Patent: July 13, 2021Assignee: ECOPRO BM CO., LTD.Inventors: Moon Ho Choi, Jun Won Suh, Jung Han Lee, Ji Hyun Nam, Sung Jin Jang, Seung Woo Choi
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Publication number: 20210167380Abstract: The present invention relates to a positive electrode active material having improved electrical characteristics by adjusting an aspect ratio gradient of primary particles included in a secondary particle, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.Type: ApplicationFiled: November 11, 2020Publication date: June 3, 2021Applicant: ECOPRO BM CO., LTD.Inventors: Moon Ho CHOI, Seung Woo CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Gwang Seok CHOE, Joong Ho BAE, Du Yeol KIM
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Publication number: 20210135212Abstract: The present invention relates to a lithium composite oxide capable of improving capacity and lifetime characteristics of a lithium secondary battery and a lithium secondary battery including the same. According to the present invention, since the atomic ratio of boron (B) and nickel (Ni) in the surface region of the lithium composite oxide including primary particles enabling lithium intercalation and deintercalation and secondary particles formed by aggregating the primary particles is in a specific range, the stability of the lithium composite oxide may be improved, and thus it is possible to improve the capacity and lifetime characteristics of the lithium secondary battery using the lithium composite oxide as a positive electrode active material.Type: ApplicationFiled: September 29, 2020Publication date: May 6, 2021Applicant: ECOPRO BM CO., LTD.Inventors: Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Mi Hye YUN, Seung Woo CHOI, Gwang Seok CHOE, Ye Ri JANG, Joong Ho BAE
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Publication number: 20210135216Abstract: A lithium complex oxide includes a mixture of first particles of n1 (n1>40) aggregated primary particles and second particles of n2 (n2?20) aggregated primary particles, the lithium complex oxide represented by Chemical Formula 1 and having FWHM (deg., 2?) of 104 peak in XRD, defined by a hexagonal lattice having R-3m space group, in a range of Formula 1: LiaNixCoyMnzM1-x-y-zO2,??[Chemical Formula 1] where M is selected from: B, Ba, Ce, Cr, F, Mg, Al, Cr, V, Ti, Fe, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, P, Sr, and any combination thereof, 0.9?a?1.3, 0.6?x?1.0, 0.0?y?=0.4, 0.0?z?0.4, and 0.0?1?x?y?z?0.4, ?0.025?FWHM(104)?{0.04+(xfirst particle?0.6)×0.25}?0.025,??[Formula 1] where FWHM(104) is represented by Formula 2, FWHM(104)={(FWHMChemical Formula 1 powder(104)?0.1×mass ratio of second particles)/mass ratio of first particles}?FWHMSi powder(220).Type: ApplicationFiled: October 30, 2020Publication date: May 6, 2021Inventors: Jung Han LEE, Seung Woo CHOI, Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Mi Hye YUN, Kwang Seok CHOI, Joong Ho BAE, Jin Oh SON
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Patent number: 10991938Abstract: The present invention relates to a lithium complex oxide, and more specifically, to a lithium complex oxide of which a range of FWHM(104) values maintains a constant relationship with a molar fraction of nickel when measuring XRD defined by a hexagonal lattice having a R-3m space group. The lithium complex oxide according to the present invention exhibits an effect of improving lifetime properties of the cells including high Ni-based cathode active materials accordingly by enabling a range of the FWHM(104) values at (104) peaks defined b the hexagonal lattice having the R-3m space group to maintain a constant relationship with the molar fraction of nickel, thereby maintaining the primary particles in a predetermined size range.Type: GrantFiled: August 20, 2018Date of Patent: April 27, 2021Assignee: ECOPRO BM CO., LTD.Inventors: Jung Han Lee, Moon Ho Choi, Jun Won Suh, Sung Jin Jang, Ji Hyun Nam, Seung Woo Choi
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Publication number: 20210119205Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using a positive electrode containing the positive electrode active material. More particularly, the present invention relates to a positive electrode active material that is able to solve a problem of increased resistance according to an increase in Ni content by forming a charge transport channel in a lithium composite oxide and a lithium secondary battery using a positive electrode containing the positive electrode active material.Type: ApplicationFiled: September 28, 2020Publication date: April 22, 2021Applicant: ECOPRO BM CO., LTD.Inventors: Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Mi Hye YUN, Seung Woo CHOI, Gwang Seok CHOE, Ye Ri JANG, Joong Ho BAE
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Publication number: 20210111396Abstract: The present invention relates to a lithium composite oxide including a coating layer having a boron-containing oxide and a lithium secondary battery including the same. More particularly, the present invention relates to a lithium composite oxide improved in lifetime and capacity characteristics by inducing a predetermined correlation between the molar ratio of nickel in a lithium composite oxide including a coating layer having a boron-containing oxide and a full width at half-maximum (FWHM; deg., 2?) of a (104) peak among XRD peaks defined by the hexagonal lattice with an R-3m space group, and a lithium secondary battery including the same.Type: ApplicationFiled: September 28, 2020Publication date: April 15, 2021Applicant: ECOPRO BM CO., LTD.Inventors: Moon Ho CHOI, Jun Won SUH, Jin Kyeong YUN, Jung Han LEE, Mi Hye YUN, Seung Woo CHOI, Gwang Seok CHOE, Joong Ho BAE, Jin-Oh SON
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Patent number: 10854858Abstract: A case for a rechargeable battery and a rechargeable battery including the case, the case including a sequentially deposited first resin layer and second resin layer, wherein the second resin layer includes a butyl-based resin.Type: GrantFiled: October 31, 2016Date of Patent: December 1, 2020Assignee: SAMSUNG SDI CO., LTD.Inventors: Jung-Yup Yang, Jun-Won Suh, Jeong-Doo Yi, Jan-Dee Kim, Bong-Kyoung Park, Ju-Hyeong Han, Ju-Hee Sohn, Da-Woon Han, Hye-Ri Eom, Hyun-Hwa Song, Sol Choi, Seok-Hun Hong
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Publication number: 20190334163Abstract: The present invention relates to a lithium complex oxide, and more specifically, to a lithium complex oxide of which a range of FWHM(104) values maintains a constant relationship with a molar fraction of nickel when measuring XRD defined by a hexagonal lattice having a R-3m space group. The lithium complex oxide according to the present invention exhibits an effect of improving lifetime properties of the cells including high Ni-based cathode active materials accordingly by enabling a range of the FWHM(104) values at (104) peaks defined by the hexagonal lattice having the R-3m space group to maintain a constant relationship with the molar fraction of nickel, thereby maintaining the primary particles in a predetermined size range.Type: ApplicationFiled: August 20, 2018Publication date: October 31, 2019Inventors: JUNG HAN LEE, MOON HO CHOI, JUN WON SUH, SUNG JIN JANG, JI HYUN NAM, SEUNG WOO CHOI