| 摘要 |
PROBLEM TO BE SOLVED: To provide an additive agent for a secondary battery superior in output property and charge and discharge cycle characteristics.SOLUTION: An additive agent (C) for a secondary battery comprises a compound (B) including a group expressed by the general formula (1) and having a thiourethane bond concentration of 0.2-10 mmol/g in its molecule, and a number-average molecular weight of 133-5000. When being used, the additive agent (C) is added to a positive electrode and/or an electrolyte. [In the formula (1), Ris a monovalent carbon hydride group having 1-20 carbon atoms in which a hydrogen atom may be substituted with a fluorine atom.] |
