公开(公告)号：US20230387407A1

公开(公告)日：2023-11-30

申请号：US18364737

申请日：2023-08-03

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Suk CHO ,  Kyung Su KIM ,  Ji Sang YU ,  Jun Ho SONG ,  Keon Ho PARK

IPC: H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/62 ,  C01G53/00

CPC classification number: H01M4/525 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/62 ,  C01G53/50 ,  H01M2004/028

Abstract: A positive electrode active material, an all-solid-state battery comprising same, and a method for manufacturing same are proposed. The positive electrode active material may include a lithium metal oxide in the form of single particles having a particle strength of 300 MPa to 1500 MPa and an average particle diameter of at most 10 μm. Since the positive electrode active material is in the form of single particles having a high particle strength of at least 300 MPa and a small average particle diameter of at most 10 μm as indicated above, cracks may not form or may be delayed even when pressure is applied during the manufacture of the positive electrode or structural stress is applied over the lifespan of the battery.

公开(公告)号：US20250105275A1

公开(公告)日：2025-03-27

申请号：US18823190

申请日：2024-09-03

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Suk CHO ,  Hyun Seung KIM ,  Jun Ho SONG ,  Ji Sang YU ,  Kyung Su KIM

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/62 ,  H01M10/0585

Abstract: Proposed is a positive electrode containing a positive electrode active material having a multimodal particle-size distribution to suppress particle crack of the positive electrode active material caused by pressure applied during a positive electrode and cell manufacturing process, thereby exhibiting excellent electrical characteristics. In addition, an all-solid-state battery including the positive electrode is proposed. The positive electrode may include a positive electrode active material formed of a lithium transition metal oxide and having a multimodal particle-size distribution in which particles with relatively small particle diameters have greater particle strength than particles with relatively large particle diameters.

公开(公告)号：US20180197691A1

公开(公告)日：2018-07-12

申请号：US15740895

申请日：2016-05-04

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Jun Ho SONG ,  Young Jun KIM ,  Min Sik PARK

IPC: H01G11/50 ,  H01G11/06

CPC classification number: H01G11/50 ,  C01D15/00 ,  C01G51/00 ,  C01G51/42 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/40 ,  H01G11/06 ,  H01G11/32 ,  H01G11/46

Abstract: The present invention relates to a high power energy storage device additive and a lithium ion capacitor including the same, and more particularly, to: a preparation method of a new lithium ion capacitor additive which is added to a carbon-based material applied as a cathode active material of a lithium ion capacitor such that the new lithium ion capacitor additive is capable of improving capacity and energy density by electrochemically doping a lithium ion onto an anode; the lithium ion capacitor additive prepared thereby; and the lithium ion capacitor including the lithium ion capacitor additive.The lithium ion capacitor additive according to the present invention can release 3 mols or more of lithium ions even at a low voltage of 4.4 V or less, and the lithium ion capacitor including the lithium ion capacitor additive according to the present invention can electrochemically dope lithium onto the anode even without performing a pre-doping process using lithium metal as in the conventional lithium ion capacitor.