Patents Assigned to ECOPRO BM CO., LTD.
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Publication number: 20230261179Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material which includes an overlithiated lithium manganese-based oxide including at least lithium, nickel, manganese and a doping metal, and in which the degradation in stability caused by excessive amounts of lithium and manganese in the lithium manganese-based oxide is mitigated and/or prevented by controlling the concentration of a transition metal in the lithium manganese-based oxide for each region, and a lithium secondary battery including the same.Type: ApplicationFiled: March 23, 2023Publication date: August 17, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Ra Na LIM, A Reum YANG, Gyun Joong KIM, Kyung Min LIM, Hye Bin KIM
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Publication number: 20230261181Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using the same, and more particularly, to a bimodal-type positive electrode active material including a first lithium composite oxide as a small particle and a second lithium composite oxide as a large particle, which improves the transport ability of lithium ions by controlling the morphology or crystal structure of the small particle included in the positive electrode active material, and further alleviates or prevents the early deterioration or shortened lifetime of the bimodal-type positive electrode active material, caused by the small particle, by increasing the particle stability of the small particle, and a lithium secondary battery using the same.Type: ApplicationFiled: March 31, 2023Publication date: August 17, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Yu Gyeong CHUN, Yong Hwan GWON, Jong Seung SHIN, Moon Ho CHOI, Yoon Young CHOI, Ji Won KIM, Sang Hyeok KIM
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Publication number: 20230238530Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery using the same, and more particularly, to a positive electrode active material that includes a lithium composite oxide comprising at least nickel and cobalt, and is capable of improving particle stability not only on the surface portion but also at the central portion of the lithium composite oxide due to the formation of a concentration gradient in which a cobalt concentration decreases from the surface portion to the central portion of the lithium composite oxide relative to the average radius of the lithium composite oxide to a predetermined thickness, a positive electrode comprising the positive electrode active material, and the lithium secondary battery using the positive electrode.Type: ApplicationFiled: March 27, 2023Publication date: July 27, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Jung Bae PARK, Moon Ho CHOI, Young Nam PARK, Chang Woo LEE, Chae Won MOON, Tae Ho PARK, JunYeub YANG
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Patent number: 11710824Abstract: Disclosed is a lithium complex oxide and method of manufacturing the same, more particularly, a lithium complex oxide effective in improving the characteristics of capacity, resistance, and lifetime with reduced residual lithium and with different interplanar distances of crystalline structure between a primary particle locating in a internal part of secondary particle and a primary particle locating on the surface part of the secondary particle, and a method of preparing the same.Type: GrantFiled: March 28, 2017Date of Patent: July 25, 2023Assignee: ECOPRO BM CO., LTD.Inventors: Moon Ho Choi, Jong Seung Shin, Dong Hee Kim, Suk Yong Jeon, Hyun Jong Yu, Kyoung Jun Lee, Young Nam Park
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Publication number: 20230231128Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material which includes a lithium-rich lithium manganese-based oxide containing at least lithium, nickel, manganese and molybdenum, wherein the lithium manganese-based oxide includes at least one primary particle and a molybdenum-containing flux is used to improve the crystal growth of the primary particle, resulting in mitigation and/or prevention of a decrease in stability caused by lithium and manganese present in excessive amounts in the lithium manganese-based oxide, and a lithium secondary battery including the same.Type: ApplicationFiled: March 22, 2023Publication date: July 20, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Ra Na LIM, A Reum YANG, Gyun Joong KIM, Kyung Min LIM, Hye Bin KIM
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Publication number: 20230216037Abstract: The present invention relates to a cobalt-free positive electrode active material having improved thermal stability and electrochemical properties, and a lithium secondary battery using the same.Type: ApplicationFiled: December 28, 2022Publication date: July 6, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Jung Bae PARK, Chae Won MOON, Hyun Jong YU, Yu jin SON
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Patent number: 11695114Abstract: The present invention relates to a positive electrode active material which has the structural stability of a lithium composite oxide constituting a positive electrode active material and a lithium secondary battery including the same. The lithium composite oxide constituting the positive electrode active material according to the present invention is able to reduce the surface area and grain boundary of secondary particles having a side reaction with an electrolyte solution, thereby improving high-temperature stability and reducing gas generation caused by the positive electrode active material, and the structural stability of the lithium composite oxide may be improved using a cation-mixing layer covering the surface of a primary particle.Type: GrantFiled: November 13, 2020Date of Patent: July 4, 2023Assignee: ECOPRO BM CO., LTD.Inventors: Moon Ho Choi, Hyun Jong Yu, Jung Bae Park
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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: 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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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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Patent number: 11643337Abstract: The present invention relates to a lithium composite oxide, a positive electrode active material for a lithium secondary battery including the lithium composite oxide, and a lithium secondary battery using a positive electrode including the positive electrode active material.Type: GrantFiled: June 22, 2021Date of Patent: May 9, 2023Assignee: ECOPRO BM CO., LTD.Inventors: Moon Ho Choi, Gyeong Jae Heo, Hyun Jong Yu, Seung Hyun 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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Publication number: 20230129261Abstract: 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 including a first lithium composite oxide as a small particle and a second lithium composite oxide as a large particle, wherein the positive electrode active material may uniformly improve the particle stability of the small particle and the large particle by controlling a slope of a concentration gradient in which cobalt in the small particle and the large particle decreases from a surface portion toward a central portion, a positive electrode including the positive electrode active material, and a lithium secondary battery using the positive electrode.Type: ApplicationFiled: October 25, 2022Publication date: April 27, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Yu Gyeong CHUN, Moon Ho CHOI, Yoon Young CHOI, Jong Seung SHIN, Jin Won LEE
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Publication number: 20230132296Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material including a lithium composite oxide containing at least nickel and cobalt, wherein since the cobalt in the lithium composite oxide has a concentration gradient having at least different slopes from a surface portion toward a central portion, it is possible to improve the stability of particles not only in a surface portion of the lithium composite oxide but also in a central portion thereof, a positive electrode including the positive electrode active material, and a lithium secondary battery using the negative electrode.Type: ApplicationFiled: October 25, 2022Publication date: April 27, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Yu Gyeong CHUN, Moon Ho CHOI, Yoon Young CHOI, Jong Seung SHIN, Jin Ho BAE, Jin Won LEE
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Publication number: 20230126235Abstract: A lithium complex oxide and method of manufacturing the same, more particularly, a lithium complex oxide effective in improving the characteristics of capacity, resistance, and lifetime with reduced residual lithium and with different interplanar distances of crystalline structure between a primary particle locating in an internal part of secondary particle and a primary particle locating on the surface part of the secondary particle, and a method of preparing the same.Type: ApplicationFiled: October 13, 2022Publication date: April 27, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Moon Ho CHOI, Jong Seung SHIN, Dong Hee KIM, Suk Yong JEON, Hyun Jong YU, Kyoung Jun LEE, Young Nam PARK
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Publication number: 20230121699Abstract: The present invention relates to a positive electrode active material for a lithium secondary battery which can simultaneously improve electrochemical properties and stability, which are in a mutual trade-off relationship, by introducing a step structure to a surface part of a lithium composite oxide constituting the positive electrode active material, and a lithium secondary battery including the same.Type: ApplicationFiled: December 9, 2022Publication date: April 20, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Bo Hyun KONG, Moon Ho CHOI, Hyun Jong YU, Kyung Gu KIM, Su Jin KIM, Min Su JO, Yeon Hee KIM, Jong Seung SHIN, Jin Kyeong YUN, Hwan Wook KWAK
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Patent number: 11631849Abstract: The present invention relates to a lithium composite oxide having improved stability and electrical characteristics as a positive electrode material by inhibiting an interfacial side reaction in the lithium composite oxide and improving the stability of a crystal structure and ion conductivity, and a lithium secondary battery including the same.Type: GrantFiled: November 11, 2020Date of Patent: April 18, 2023Assignee: ECOPRO BM CO., LTD.Inventors: Moon Ho Choi, Hyun Jong Yu, Chang Woo Lee, Yu Kyung Chun
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Publication number: 20230111400Abstract: The present invention relates to a positive electrode active material which includes a lithium composite oxide with improved electrochemical properties and stability and a lithium secondary battery including the same, and more particularly, to a positive electrode active material which is improved in electrochemical characteristics and stability by removing at least a part of a coating layer present on the surface of the lithium composite oxide and lithium-containing impurities, and a lithium secondary battery including the same.Type: ApplicationFiled: December 9, 2022Publication date: April 13, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Chang Woo LEE, Moon Ho CHOI, Hyun Jong YU, Young Nam PARK, Jung Bae PARK, Jae Woo JEON
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Publication number: 20230106467Abstract: The present invention relates to a positive electrode active material with improved electrochemical properties and stability and a lithium secondary battery using a positive electrode comprising the same, wherein secondary particles formed by aggregation of a plurality of primary particles are provided as aggregates of primary particles in which a concentration gradient of the doping metal is formed from a grain boundary between the primary particles toward a center portion of the primary particle.Type: ApplicationFiled: September 21, 2022Publication date: April 6, 2023Applicant: ECOPRO BM CO., LTD.Inventors: Chae Won MOON, Jung Bae PARK, Moon Ho CHOI, Hyun Jong YU
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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