Invention Grant
- Patent Title: Positive active material comprising a continuous concentration gradient of a metal composition for lithium battery, method of preparing the same, and lithium battery including the same
- Patent Title (中): 包含用于锂电池的金属组合物的连续浓度梯度的正极活性材料及其制备方法以及包含其的锂电池
-
Application No.: US12279033Application Date: 2006-12-27
-
Publication No.: US08865348B2Publication Date: 2014-10-21
- Inventor: Yang-Kook Sun , Byung-Chun Park
- Applicant: Yang-Kook Sun , Byung-Chun Park
- Applicant Address: KR Seoul
- Assignee: Industry-University Cooperation Foundation, Hanyang University
- Current Assignee: Industry-University Cooperation Foundation, Hanyang University
- Current Assignee Address: KR Seoul
- Agency: Lucas & Mercanti, LLP
- Priority: KR10-2006-0028861 20060330
- International Application: PCT/KR2006/005767 WO 20061227
- International Announcement: WO2007/114557 WO 20071011
- Main IPC: H01M4/134
- IPC: H01M4/134 ; H01M4/13 ; H01M4/02 ; H01M4/08 ; H01M4/525 ; H01M4/131 ; H01M4/505 ; H01M10/052
Abstract:
A positive active material according to one embodiment of the present invention includes an internal bulk part and an external bulk part surrounding the internal bulk part and has a continuous concentration gradient of the metal composition from an interface between the internal bulk part and the external bulk part to the surface of the active material. The provided positive active material in which the metal composition is distributed in a continuous concentration gradient has excellent electrochemical characteristics such as a cycle life, capacity, and thermal stability.
Public/Granted literature
Information query
