发明名称 |
A LONG-LIFE, HIGH RATE LITHIUM/SULFUR CELL UTILIZING A HOLISTIC APPROACH TO ENHANCING CELL PERFORMANCE |
摘要 |
A long-life, high-rate lithium sulfur (Li/S) cell with high specific energy uniquely combines cetyltrimethyl ammonium bromide (CTAB)-modified sulfur-graphene oxide (S-GO) nanocomposites with an elastomeric styrene butadiene rubber (SBR)/carboxy methyl cellulose (CMC) binder and an ionic liquid-based novel electrolyte with the LiNO3 additive. A Li/S cell employing a CTAB-modified S-GO nanocomposite cathode can be discharged at rates as high as 6C (1C=1.675 A/g of sulfur) and charged at rates as high as 3C while still maintaining high specific capacity (˜800 mAh/g of sulfur at 6C), with a long cycle life exceeding 1500 cycles, the longest cycle life with extremely low decay rate (0.039% per cycle) demonstrated so far for a Li/S cell. |
申请公布号 |
EP3011616(A2) |
申请公布日期 |
2016.04.27 |
申请号 |
EP20140858787 |
申请日期 |
2014.06.20 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
CAIRNS, ELTON J.;SONG, MIN KYU;ZHANG, YUEGANG |
分类号 |
H01M2/16;H01M4/136;H01M4/1397;H01M4/36;H01M4/38;H01M4/62;H01M4/66;H01M10/052;H01M10/0567;H01M10/0568;H01M10/0569 |
主分类号 |
H01M2/16 |
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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