| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing solution without liquid leaking out, which does not make a material forming an electrochemical element deteriorated and which can make the electrochemical element thin and laminated. SOLUTION: In a developing solution, a salt in which polyvinyl imidazolimium compound is set to be a positive ion component is set to be electrolyte. Polyvinyl imidazolimium compound is set to be that expressed by a formula. In the formula, (n) represents an integer not less than 2, and R1 and R2 each represent alkyl groups the carbons number of which is 1-4, and R3 represents an alkyl group hydrogen or carbon number of which is 1-4. In the developing solution, more than one type of acid constituting salt in which the polyvinyl imidazolimium compound is set as a positive ion component is selected from a group constituted of carbon acid and inorganic acid or developing solution which is an aggregate which polyvinyl imidazolium compound cross-linkage is provided. |
