发明名称 |
LITHIUM DIFLUOROPHOSPHATE, ELECTROLYTIC SOLUTION CONTAINING LITHIUM DIFLUOROPHOSPHATE, PROCESS FOR PRODUCING LITHIUM DIFLUOROPHOSPHATE, PROCESS FOR PRODUCING NONAQUEOUS ELECTROLYTIC SOLUTION, NONAQUEOUS ELECTROLYTIC SOLUTION, AND NONAQUEOUS-ELECTROLYTIC-SOLUTION SECONDARY CELL EMPLOYING THE SAME |
摘要 |
A difluorophosphate salt, which is expensive and not readily available, can be produced with a high purity readily and efficiently from inexpensive and readily available materials. A nonaqueous electrolyte secondary battery that exhibits low-temperature discharge and heavy-current discharge characteristics and high-temperature preservation and cycle characteristics without impairing the battery safety. A hexafluorophosphate salt is reacted with a compound having a bond represented by the following formula (1) in the molecule:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒSi-O-Si€ƒ€ƒ€ƒ€ƒ€ƒ(1) A nonaqueous electrolyte used for nonaqueous electrolyte secondary batteries including a negative electrode and a positive electrode that can occlude and discharge ions, and a nonaqueous electrolyte is prepared from a mixture obtained by mixing at least one nonaqueous solvent, a hexafluorophosphate salt and a compound having a bond represented by the following formula (1), and removing low-boiling compounds newly formed in the system, the low-boiling compounds having a lower boiling point than that of the compound having the bond represented by the formula (1):
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒSi-O-Si€ƒ€ƒ€ƒ€ƒ€ƒ(1) |
申请公布号 |
KR20140040280(A) |
申请公布日期 |
2014.04.02 |
申请号 |
KR20147004970 |
申请日期 |
2007.08.22 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
TAKEHARA MASAHIRO |
分类号 |
H01M10/0567;H01M10/0568;C01B25/30;C01B25/455;C01D15/00;H01M10/052;H01M10/0569 |
主分类号 |
H01M10/0567 |
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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