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"Cathode Active Material For Lithium Secondary Battery"
Abstract: Disclosed herein is a cathode active material for a lithium secondary battery, in particular, including a lithium transition metal oxide with a layered crystalline structure in which the transition metal includes a transition metal mixture of Ni, Mn and Co, and an average oxidation number of all transition metals other than lithium is more than +3, and specific conditions represented by the following formulae (1) and (2), 1.1 < m(Ni)/m(Mn) < 1.5 and 0.4 < m(Ni2+)/m(Mn4+) < 1, are satisfied. The inventive cathode active material has a more uniform and stable layered structure by controlling the oxidation number of transition metals contained in a transition metal oxide layer to form the layered structure, compared to conventional substances. Accordingly, the active material exhibits improved overall electrochemical characteristics including battery capacity and, in particular, excellent high rate charge-discharge features.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
08 March 2011
Publication Number
49/2011
Publication Type
INA
Invention Field
ELECTRICAL
Status
Email
remfry-sagar@remfry.com
Parent Application
Patent Number
Legal Status
Grant Date
2019-05-31
Renewal Date
Applicants
LG CHEM, LTD
20, YOLDO-DONG, YOUNGDUNGPO-GU, SEOUL 150-721, REPUBLIC OF KOREA
Inventors
1. SUNG KYUN CHANG
106-901, CHONGGU NARAE APT., JEONMIN-DONG, YUSEONG-GU, DAEJEON 305-729, REPUBLIC OF KOREA
2. HONG-KYU PARK
301-1306, SONGRIMMAEUL APT., HAGI-DONG, YUSEONG-GU, DAEJEON 305-759, REPUBLIC OF KOREA
3. HO SUK SHIIN
102-203, HANGANG KUKDONG APT., PUNGNAP 2-DONG, SONGPA-GU, SEOUL 138-784, REPUBLIC OF KOREA
4. SEUNG TAE HONG
205-804, EXPO APT., JEONMIN-DONG, YUSEONG-GU, DAEJEON 305-761, REPUBLIC OF KOREA
5. YONGSUN CHOI
7-504, LG CHEM SAWON APT., 381-42, DORYONG- DONG, REPUBLIC OF KOREA
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 1675-DELNP-2011-GPA.pdf | 2011-10-21 |
| 2 | 1675-DELNP-2011-Form-5.pdf | 2011-10-21 |
| 3 | 1675-DELNP-2011-Form-3.pdf | 2011-10-21 |
| 4 | 1675-DELNP-2011-Form-2.pdf | 2011-10-21 |
| 5 | 1675-DELNP-2011-Form-18.pdf | 2011-10-21 |
| 6 | 1675-DELNP-2011-Form-1.pdf | 2011-10-21 |
| 7 | 1675-DELNP-2011-Description (Complete).pdf | 2011-10-21 |
| 8 | 1675-DELNP-2011-Correspondence-others.pdf | 2011-10-21 |
| 9 | 1675-DELNP-2011-Claims.pdf | 2011-10-21 |
| 10 | 1675-DELNP-2011-Abstract.pdf | 2011-10-21 |
| 11 | 1675-DELNP-2011-FER.pdf | 2017-01-25 |
| 12 | 1675-DELNP-2011-PETITION UNDER RULE 137 [20-07-2017(online)].pdf_1.pdf | 2017-07-20 |
| 13 | 1675-DELNP-2011-PETITION UNDER RULE 137 [20-07-2017(online)].pdf | 2017-07-20 |
| 14 | 1675-DELNP-2011-Proof of Right (MANDATORY) [21-07-2017(online)].pdf | 2017-07-21 |
| 15 | 1675-DELNP-2011-Information under section 8(2) (MANDATORY) [21-07-2017(online)].pdf | 2017-07-21 |
| 16 | 1675-DELNP-2011-FORM-26 [21-07-2017(online)].pdf | 2017-07-21 |
| 17 | 1675-DELNP-2011-FER_SER_REPLY [21-07-2017(online)].pdf | 2017-07-21 |
| 18 | 1675-DELNP-2011-CORRESPONDENCE [21-07-2017(online)].pdf | 2017-07-21 |
| 19 | 1675-DELNP-2011-COMPLETE SPECIFICATION [21-07-2017(online)].pdf | 2017-07-21 |
| 20 | 1675-DELNP-2011-CLAIMS [21-07-2017(online)].pdf | 2017-07-21 |
| 21 | 1675-DELNP-2011-ABSTRACT [21-07-2017(online)].pdf | 2017-07-21 |
| 22 | 1675-DELNP-2011-Power of Attorney-260717.pdf | 2017-08-04 |
| 23 | 1675-DELNP-2011-OTHERS-260717.pdf | 2017-08-04 |
| 24 | 1675-DELNP-2011-Correspondence-260717.pdf | 2017-08-04 |
| 25 | 1675-DELNP-2011-Response to office action (Mandatory) [16-03-2019(online)].pdf | 2019-03-16 |
| 26 | 1675-DELNP-2011-PatentCertificate31-05-2019.pdf | 2019-05-31 |
| 27 | 1675-DELNP-2011-IntimationOfGrant31-05-2019.pdf | 2019-05-31 |
| 28 | 1675-DELNP-2011-RELEVANT DOCUMENTS [21-02-2020(online)].pdf | 2020-02-21 |
| 29 | 1675-DELNP-2011-RELEVANT DOCUMENTS [27-09-2021(online)].pdf | 2021-09-27 |
| 30 | 1675-DELNP-2011-RELEVANT DOCUMENTS [29-09-2021(online)].pdf | 2021-09-29 |
| 31 | 1675-DELNP-2011-RELEVANT DOCUMENTS [15-09-2022(online)].pdf | 2022-09-15 |
| 32 | 1675-DELNP-2011-POWER OF AUTHORITY [17-11-2022(online)].pdf | 2022-11-17 |
| 33 | 1675-DELNP-2011-FORM-16 [17-11-2022(online)].pdf | 2022-11-17 |
| 34 | 1675-DELNP-2011-ASSIGNMENT WITH VERIFIED COPY [17-11-2022(online)].pdf | 2022-11-17 |
| 35 | 1675-DELNP-2011-RELEVANT DOCUMENTS [21-08-2023(online)].pdf | 2023-08-21 |
Search Strategy
| 1 | PatSeer1675delnp2011_12-01-2017.pdf |