发明名称 |
HIGH CAPACITY LITHIUM-ION ELECTROCHEMICAL CELLS AND METHODS OF MAKING SAME |
摘要 |
High capacity lithium-ion electrochemical cells are provided that include positive electrode comprising a layered lithium transition metal oxide having a first irreversible capacity and a negative electrode that includes an alloy anode material that also has a first irreversible capacity. The first irreversible capacity of the positive electrode is less than the first irreversible capacity of the negative electrode. The discharge voltage curve of the positive electrode covers at least 10% of its capacity at voltages below 3.5 V ea) vs. Li/Li+. The average discharge voltage of the positive electrode is above 3.75 V vs. Li/Li+ when the cell is discharged from about 4.6 V vs. Li/Li+ to about 2.5 V vs. Li/Li+ at a rate of C/10 or slower and when the electrochemical cell is discharged to a final discharge voltage of about 2.5 V vs. Li/Li+ or greater. |
申请公布号 |
EP2771937(A1) |
申请公布日期 |
2014.09.03 |
申请号 |
EP20120843998 |
申请日期 |
2012.10.25 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
CHRISTENSEN, LEIF;EBERMAN, KEVIN W. |
分类号 |
H01M10/0525;H01M4/131;H01M4/1391;H01M4/36;H01M4/485;H01M4/505;H01M4/525;H01M4/62;H01M10/058 |
主分类号 |
H01M10/0525 |
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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