| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide nonaqueous electrolyte solution capable of improving at least either large-current charge/discharge characteristics or charge/discharge capacity, and a nonaqueous electrolyte solution secondary battery using it. <P>SOLUTION: Electrolyte solution such as liquid-shape electrolyte is immersed in a separator 23. The electrolyte solution contains a liquid-shape solvent, for instance, a nonaqueous solvent such as an organic solvent, and electrolyte salt dissolved in the nonaqueous solvent. Further, as additives, it contains at least one type selected from tris (penta-fluorophenyl) borane (TPFPB) and tris-borate (2H-hexafluoro isopropyl) (THFPB), and at least one type selected from 1,3-propene sultone (PRS) and 1,3-propane sultone (PS). <P>COPYRIGHT: (C)2008,JPO&INPIT |
