Secondary battery

A secondary battery, comprising an electrode assembly in which a positive electrode and a negative electrode are oppositely disposed, an electrolyte liquid, and a package which encloses the electrode assembly and the electrolyte liquid inside;

• wherein the negative electrode is formed by binding a negative electrode active substance to a negative electrode collector with a negative electrode binder;
• wherein the electrolyte liquid comprises a fluorine-containing cyclic ether compound represented by the following formulae (3)
• wherein, in formula (3), R15 to R24 are each independently selected from among hydrogen atom, fluorine atom, or fluorine-substituted or non-substituted alkyl groups, and at least one of R15 to R24 is selected from fluorine atom or fluorine-substituted alkyl groups;
• wherein the electrolyte liquid further comprises a linear or cyclic carbonate;
• and
• wherein a content of the fluorine-containing cyclic ether compound is 1 to 30 mass % with respect to a total amount of the fluorine-containing cyclic ether compound and the carbonate.