| 摘要 |
PROBLEM TO BE SOLVED: To prevent the deterioration of the structural material of a battery and the deterioration of battery performance even in the case where water intrudes the non-aqueous electrolyte by adding the organic silicon compound having Si-N coupling, which reacts with water and halogen acid so as to eliminate them, in the non-aqueous electrolyte including the support electrolyte, which reacts with water and generated the halogen acid. SOLUTION: Organic silicon compound having Si-N coupling reacts with water and halogen acid, and the Si-N coupling is uncoupled for cleavage so as to decompose the water and halogen acid. Decomposition product after the reaction is harmless to the battery performance, and since the decomposition product is organic compound, it has affinity with the non-aqueous electrolyte. As an organic silicon compound having Si-N coupling, the organic silicon compound, which includes single or plural Si-N coupling in a molecule, is used, and the silicon compound, which has Si-N coupling in the shape of Si-N-Si coupling in a molecule, is used. Organosilazane compound and organo di-silazane compound are usually used. |
