发明名称 |
DOPED POSITIVE ELECTRODE ACTIVE MATERIALS AND LITHIUM ION SECONDARY BATTERY CONSTRUCTED THEREFROM |
摘要 |
Positive electrode active materials comprising a dopant in an amount of 0.1 to 10 mole percent of Mg, Ca, Sr, Ba, Zn, Cd or a combination thereof are described that have high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li1+xNiαMn&bgr;-δCoγAδXμO2−zFz, where x ranges from about 0.01 to about 0.3, δ ranges from about 0.001 to about 0.15, and the sum x+α+&bgr;+γ+δ+μ can approximately equal 1.0. The materials can be coated with a metal fluoride to improve the performance of the materials especially upon cycling. The materials generally can have a tap density of at least 1.8 g/mL. Also, the materials can have an average discharge voltage of around 3.6 V. |
申请公布号 |
EP2553749(A2) |
申请公布日期 |
2013.02.06 |
申请号 |
EP20110763220 |
申请日期 |
2011.03.18 |
申请人 |
ENVIA SYSTEMS, INC. |
发明人 |
KARTHIKEYAN, DEEPAK KUMAAR KANDASAMY;VENKATACHALAM, SUBRAMANIAN;AMIRUDDIN, SHABAB;LOPEZ, HERMAN;KUMAR, SUJEET |
分类号 |
H01M4/525;C01G51/00;C01G53/00;H01M4/02;H01M4/36;H01M4/505;H01M4/58;H01M4/583;H01M4/62;H01M10/052;H01M10/0525 |
主分类号 |
H01M4/525 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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