Invention Grant
US09553313B2 3V class spinel complex oxides as cathode active materials for lithium secondary batteries, method for preparing the same by carbonate coprecipitation, and lithium secondary batteries using the same
有权
作为锂二次电池用正极活性物质的3V级尖晶石复合氧化物，碳酸盐共沉淀法制备该锂二次电池的锂二次电池及使用其的锂二次电池
- Patent Title: 3V class spinel complex oxides as cathode active materials for lithium secondary batteries, method for preparing the same by carbonate coprecipitation, and lithium secondary batteries using the same
- Patent Title (中): 作为锂二次电池用正极活性物质的3V级尖晶石复合氧化物，碳酸盐共沉淀法制备该锂二次电池的锂二次电池及使用其的锂二次电池
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Application No.: US14525687Application Date: 2014-10-28
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Publication No.: US09553313B2Publication Date: 2017-01-24
- Inventor: Yang Kook Sun , Sang Ho Park , Sung Woo Oh
- Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
- Applicant Address: KR Seoul
- Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
- Current Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
- Current Assignee Address: KR Seoul
- Agency: Tutunjian & Bitetto, P.C.
- Priority: KR10-2005-0009582 20050202
- Main IPC: H01M4/505
- IPC: H01M4/505 ; H01M4/58 ; B82Y30/00 ; C01G45/12 ; C01G53/00 ; H01M4/525 ; C01D15/02
Abstract:
Disclosed herein is a 3V class spinel oxide with improved high-rate characteristics which has the composition Li1+x[MyMn(2−y)]O4−zSz (0≦x≦0.1, 0.01≦y≦0.5, 0.01≦z≦0.5, and M is Mn, Ni or Mg). Further disclosed is a method for preparing the 3V class spinel oxide by carbonate coprecipitation of starting materials, addition of sulfur, followed by calcining. The 3V class spinel oxide is spherical and has a uniform size distribution. A lithium secondary battery including the 3V class spinel oxide has a constant plateau at a potential of 3V and shows superior cycle characteristics.
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