Abstract: 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:
Application
Filed:
August 9, 2019
Publication date:
February 27, 2020
Applicant:
ECOPRO BM CO., LTD.
Inventors:
Moon Ho CHOI, Gyeong Jae HEO, Hyun Jong YU, Seung Hyun CHOI
Abstract: The present invention relates to a positive electrode active material, and a lithium secondary battery comprising a positive electrode including the positive electrode active material.
Type:
Application
Filed:
August 20, 2019
Publication date:
February 27, 2020
Applicant:
ECOPRO BM CO., LTD.
Inventors:
Moon Ho CHOI, Gyeong Jae HEO, Hyun Jong YU, Seung Hyun CHOI
Abstract: The present invention relates to an cathode active material for lithium secondary battery and a lithium secondary battery including the same, and more specifically, it relates to an anode active material for lithium secondary battery which includes a concentration gradient layer having a controlled thickness and a shell layer on the periphery of the core layer of the anode active material having a layered structure and in which the lithium ion diffusion paths in the primary particles and the secondary particles are formed to exhibit directivity in a specific direction, and a lithium secondary battery including the same.
Type:
Grant
Filed:
January 21, 2015
Date of Patent:
December 31, 2019
Assignee:
ECOPRO BM CO., LTD.
Inventors:
Jik Soo Kim, Moon Ho Choi, Jin Kyeong Yun, Jae Yong Jung, Suk Yong Jeon, Jong Seung Shin
Abstract: 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:
Grant
Filed:
March 28, 2017
Date of Patent:
November 19, 2019
Assignee:
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
Abstract: The present invention relates to a positive active material and a method for producing same and, more specifically, to a positive active material comprising LiAlO2 at the surface thereof as a result of reacting an Al compound with residual lithium and to a method for producing same.
Type:
Grant
Filed:
June 27, 2017
Date of Patent:
November 19, 2019
Assignee:
ECOPRO BM CO., LTD.
Inventors:
Moon Ho Choi, Jik Soo Kim, Jin Kyeong Yun, Suk Yong Jeon, Jae Yong Jung, Suk Whan Lee
Abstract: Disclosed are a method of manufacturing a cathode active material and a cathode active material manufactured by the same, and more particularly, a cathode active material which is rinsed by a compound including thiol group, includes residual sulfur on a surface, and has decreased residual lithium and a method of manufacturing the same.
Type:
Grant
Filed:
December 16, 2016
Date of Patent:
March 12, 2019
Assignee:
ECOPRO BM CO., LTD.
Inventors:
Hyung Joo Noh, Suk Yong Jeon, Moon Ho Choi, Jin Kyeong Yun, Dong Hee Kim
Abstract: The present invention relates to a method of producing a cobalt-coated precursor, the cobalt-coated precursor produced by the method and a positive electrode active material for a lithium secondary battery, the positive electrode active material which is prepared using the cobalt-coated precursor and, more particularly, to a method of preparing a new positive electrode active material having improved high capacity and stability by coating cobalt on the surface of a precursor in the precursor step, thereby improving characteristics of the precursor degraded when washed with water, and a positive electrode active material prepared by the method.
Abstract: The present invention relates to a method for preparing a positive electrode active material precursor and a positive electrode material for a lithium secondary battery having a concentration-gradient layer using a batch reactor, and to a positive electrode active material precursor and a positive electrode material for a lithium secondary battery prepared by the method.
Abstract: 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 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:
Application
Filed:
March 15, 2017
Publication date:
February 8, 2018
Applicant:
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
Abstract: 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:
Application
Filed:
March 15, 2017
Publication date:
January 11, 2018
Applicant:
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
Abstract: The present invention relates to an anode active material for lithium secondary battery and a lithium secondary battery including the same, and more specifically it relates to an anode active material for lithium secondary battery in which the a lithium ion diffusion path in the primary particles is formed to exhibit specific directivity, and a lithium secondary battery including the same. The cathode active material for lithium secondary battery of the present invention has a lithium ion diffusion path exhibiting specific directivity in the primary particles and the secondary particles, thus not only the conduction velocity of the lithium ion is fast and the lithium ion conductivity is high but also the cycle characteristics are improved as the crystal structure hardly collapses despite repeated charging and discharging.
Type:
Grant
Filed:
January 21, 2015
Date of Patent:
December 5, 2017
Assignee:
ECOPRO BM CO., LTD.
Inventors:
Jik Soo Kim, Moon Ho Choi, Jin Kyeong Yun, Jae Yong Jung, Suk Yong Jeon, Jong Seung Shin
Abstract: The present invention relates to a positive active material and a method for producing same and, more specifically, to a positive active material comprising LiAlO2 at the surface thereof as a result of reacting an Al compound with residual lithium and to a method for producing same.
Type:
Application
Filed:
June 27, 2017
Publication date:
October 12, 2017
Applicant:
ECOPRO BM CO., LTD.
Inventors:
Moon Ho CHOI, Jik Soo Kim, Jin Kyeong Yun, Suk Yong Jeon, Jae Yong Jung, Suk Whan Lee
Abstract: Disclosed are a method for manufacturing a lithium secondary battery positive active material exhibiting a concentration gradient and a lithium secondary battery positive active material exhibiting a concentration gradient, manufactured by the method, and more particularly, a method for manufacturing a lithium secondary battery positive active material exhibiting a concentration gradient and a lithium secondary battery positive active material exhibiting a concentration gradient, manufactured by the method, the method being characterized by forming a barrier layer so as to maintain a concentration gradient layer even in case of thermal diffusion by a subsequent thermal treatment process.
Type:
Application
Filed:
June 22, 2017
Publication date:
October 5, 2017
Applicant:
ECOPRO BM CO., LTD.
Inventors:
Moon Ho CHOI, Jik Soo KIM, Jin Kyeong YUN, Suk Yong JEON, Jae Yong JUNG, Yong Chul SUNG