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公开(公告)号：EP4439722A1
公开(公告)日：2024-10-02
申请号：EP22922860.6
申请日：2022-01-29
发明人： LIU, Wenyuan , LANG, Ye
CPC分类号： Y02E60/10 , H01M4/583 , H01M10/0569 , H01M2004/02120130101 , H01M2004/02720130101 , H01M4/505 , H01M10/0567 , H01M2004/02820130101 , H01M4/525 , H01M4/131 , H01M10/052 , H01M10/0525 , H01M4/366 , H01M4/364
摘要： This application provides a positive active material, an electrochemical device containing the positive active material, and an electronic device. The positive active material includes an element Mn and an element Al. A positive active material particle includes a first region close to a surface of the positive active material particle and a second region away from the surface of the positive active material particle. A molar ratio between Al and Mn in the first region is a1, the molar ratio between Al and Mn in the second region is a2, and the two molar ratios satisfy 1.1 ≤ a1/a2 ≤ 100. The positive active material according to this application makes Al concentrate richly in the region close to the surface of the positive active material, thereby not only effectively alleviating dissolution of manganese on the positive electrode to improve cycle performance and storage performance of the electrochemical device, but also reducing a total content of Al in the positive active material to maintain a relatively high specific capacity of the positive electrode plate, and in turn, improving comprehensive performance of the electrochemical device.
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2.发明公开
公开(公告)号：EP4439713A1
公开(公告)日：2024-10-02
申请号：EP22912023.3
申请日：2022-12-23
发明人： JO, Chi Ho , JUNG, Wang Mo , YOO, Tae Gu , HWANG, Jin Tae , JUNG, Hae Jung , HEO, Jong Wook , CHO, Hyeon Jin
摘要： The present invention relates to a positive electrode active material including lithium nickel-based oxide particles in a single-particle form composed of a single nodule or a single-particle-like form, which is a complex of at most 30 nodules; and a coating layer formed on the surface of the lithium nickel-based oxide particles, wherein the coating layer is formed by using a nano-sized coating precursor which is a chelate complex comprising lithium, nickel, cobalt, and Ma (where Ma is Mn, Al, or a combination thereof).
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3.发明公开
公开(公告)号：EP4439700A2
公开(公告)日：2024-10-02
申请号：EP24165917.6
申请日：2024-03-25
发明人： LEE, Jinhyon , YOON, Yeonhee , KIM, Seongdae , KWON, Ilkyong , NAM, Hyun , LEE, Donggeun , PYUN, Ahram
IPC分类号： H01M4/131 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/58 , H01M4/587 , H01M4/62 , H01M10/0525
CPC分类号： H01M4/621 , H01M4/625 , H01M4/131 , H01M4/364 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M4/624 , H01M4/628 , H01M4/587 , H01M4/366 , H01M10/0525
摘要： A dry electrode film, a dry electrode including the same, and a lithium battery including the dry electrode are provided. The dry electrode film includes a dry electrode active material, a dry binder, and a nitrogen-containing anion, a nitrile group-containing compound, or a combination thereof, wherein the dry electrode active material includes a core and a shell conforming to a surface of the core, the shell includes at least one first metal oxide and a first carbonaceous material, the first metal oxide is in a matrix of the first carbonaceous material, and the first metal oxide is represented by MaOb (0
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公开(公告)号：EP4439699A1
公开(公告)日：2024-10-02
申请号：EP24165835.0
申请日：2024-03-25
发明人： KWON, Ilkyong , LEE, Jinhyon , PYUN, Ahram , KWON, Seunguk , BANG, Youmin
CPC分类号： H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/62 , H01M4/623 , H01M4/622 , H01M4/625 , H01M4/131 , H01M4/366 , H01M4/364 , H01M2004/02820130101
摘要： A dry electrode film, and a dry electrode and a lithium battery that include the same are provided. The dry electrode film includes a dry electrode active material and a dry binder, wherein the dry electrode active material includes a core and a shell conforming to a surface of the core, the shell includes at least one element selected from among beryllium (Be), boron (B), and fluorine (F), and in an X-ray photoelectron spectroscopy (XPS) spectrum of a surface of the dry electrode active material, a content (e.g., amount) of the at least one element of is about 1 wt% to about 4 wt%.
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公开(公告)号：EP4439698A1
公开(公告)日：2024-10-02
申请号：EP23740453.8
申请日：2023-01-11
发明人： KIM, Jong Woo , HAN, Gi Beom , LHO, Eun Sol , JUNG, Wang Mo , PARK, Sang Min , LEE, Sang Wook , KIM, Seul Ki , KIM, Hyeong Il
IPC分类号： H01M4/131 , H01M4/36 , H01M4/525 , H01M4/505 , H01M4/1391 , H01M4/04 , H01M10/052 , H01M4/02
CPC分类号： Y02E60/10 , H01M4/02 , H01M10/052 , H01M4/04 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/1391 , H01M4/131
摘要： The present invention relates to: a positive electrode for a lithium secondary battery, the positive electrode comprising a positive electrode current collector and a positive electrode active material layer that is formed on at least one surface of the positive electrode current collector and includes a positive electrode active material, wherein the pore volume of the positive electrode active material layer is 7.0×10-3 cm3/g to 8.0×10-3 cm3/g; and a method for manufacturing the positive electrode.
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公开(公告)号：EP4439693A1
公开(公告)日：2024-10-02
申请号：EP24166085.1
申请日：2024-03-25
发明人： NAM, Hyun , LEE, Jinhyon , PYUN, Ahram , KWON, Ilkyong , YOON, Yeonhee , LEE, Donggeun , KIM, Seongdae , KWON, Seunguk , BANG, Youmin , CHOI, Jongsup
IPC分类号： H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/62 , H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/02
CPC分类号： H01M4/0435 , H01M4/1391 , H01M4/625 , H01M4/0404 , H01M4/622 , H01M4/623 , H01M4/131 , H01M4/525 , H01M4/505 , H01M2004/02120130101 , H01M2004/02820130101 , H01M10/0525
摘要： A method of preparing a dry electrode film, the dry electrode film, a dry electrode including the dry electrode film, and a lithium battery including the dry electrode film are provided. The method includes providing frozen first dry binder particles, pulverizing the frozen first dry binder particles to prepare second dry binder particles, mixing a dry electrode active material and the second dry binder particles to prepare a dry electrode mixture, and processing the dry electrode mixture into a dry electrode film including a dry binder through a rolling device including a calender roll. A second particle diameter of the second dry binder particles is less than a first particle diameter of the frozen first dry binder particles.
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公开(公告)号：EP4439685A1
公开(公告)日：2024-10-02
申请号：EP23165564.8
申请日：2023-03-30
CPC分类号： H01M10/54 , H01M2004/02820130101 , H01M4/0459 , H01M4/0404 , H01M4/626 , H01M4/5825 , H01M4/505 , C25B1/14
摘要： Die Erfindung betrifft ein Verfahren zur Herstellung einer lithiumhaltigen Elektrode (4) für einen Lithium-Ionen haltigen Akkumulator umfassend folgende Schritte:
- Herstellen einer poröse metallischen Struktur (6),
- Beschichten einer Oberfläche (26) der porösen Struktur (6) mit einer Eisenphosphat-Schicht (28),
- Einbringen der mit der Eisenphosphatschicht (28) versehenen porösen Struktur (6) in eine elektrochemischen Zelle (2) als erste Elektrode (8) die als Kathode (10) dient,
- Einbringen einer zweiten, lithiumhaltigen Elektrode (12) in die Zelle (2), die als Anode (14) dient,
- wobei in die zweite lithiumhaltige Elektrode (12) Lithiumverbindungen (30) eingebracht werden, die aus thermisch zersetzen Elektrodenmaterial eines Lithium-Ionen Akkumulators stammen,
- Einbringen eines nichtwässrigen Elektrolyten (16) in die elektrochemische Zelle (2),
- Verschließen der elektrochemischen Zelle (2) unter Inertbedingungen,
- Anlegen von elektrischem Strom an die Elektroden (8), (12) der elektrochemischen Zelle (2), so dass Lithiumionen (18) von der lithiumhaltigen Anode (14) durch den nicht wässrigen Elektrolyten (16) zur Kathode (10) in Form der poröse Struktur (6) wandern und
- die mit der Eisenphosphatschicht (28) versehene Oberfläche (26) der porösen Struktur (6) zu einer Lithium-Eisenphosphat-Schicht (32) umgewandelt wird.-
公开(公告)号：EP4437598A2
公开(公告)日：2024-10-02
申请号：EP22800245.7
申请日：2022-10-07
发明人： SRIMUK, Pattarachai , VÄLI, Roland
IPC分类号： H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/36 , H01M4/48 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/052 , H01M10/054 , H01M4/02
CPC分类号： H01M4/0409 , H01M4/131 , H01M4/1391 , H01M4/366 , H01M4/48 , H01M4/505 , H01M4/525 , H01M4/621 , H01M4/625 , H01M10/052 , H01M10/054 , H01M2004/02120130101 , H01M2004/02720130101 , Y02E60/10
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9.发明公开
公开(公告)号：EP4435882A1
公开(公告)日：2024-09-25
申请号：EP22911965.6
申请日：2022-12-22
发明人： LHO, Eun Sol , HAN, Gi Beom , KIM, Jong Woo , JUNG, Wang Mo , PARK, Sang Min , LEE, Sang Wook , KIM, Seul Ki , KIM, Hyeong Il
CPC分类号： Y02E60/10 , H01M4/13 , H01M4/02 , H01M10/052 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/62 , H01M4/131
摘要： The present invention relates to a positive electrode for a lithium secondary battery including: a collector; and a positive electrode active material layer disposed on at least one surface of the collector, wherein the ratio of a peak intensity of a (003) plane to a peak intensity of a (101) plane of the positive electrode measured by X-ray diffraction analysis is 8 or more.
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公开(公告)号：EP4434941A1
公开(公告)日：2024-09-25
申请号：EP23855173.3
申请日：2023-08-17
申请人： LG Chem, Ltd.
发明人： HWANG, Byung Hyun , KIM, Nam Il , JUNG, Hyun Jin , BEAK, Chan Ju , HWANG, Hye Youn , PARK, Hyun Ah , KANG, Seong Hoon , HONG, Won Taek , KIM, Won Tae , KIM, Woo Hyun , KIM, Jun Gil , YOON, Ju Han , PARK, Young Su
摘要： The present invention relates to a positive electrode active material precursor, a method for preparing the same, a positive electrode active material, and a method for preparing a positive electrode active material, and provides: a positive electrode active material precursor including Ni and Mn and secondary particles formed by the aggregation of a plurality of primary particles, wherein the secondary particles have a ratio of a core area to a total area of the particles (core area/total area) of 28.7% to 34.1%, and the porosity represented by Equation 1 below is 11.3% to 11.7%; a method for preparing the positive electrode active material precursor; a positive electrode active material including a reaction product of the positive electrode active material precursor and a lithium raw material; and a method for preparing a positive electrode active material using the positive electrode active material precursor.
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