COMPOSITION, LIQUID ELECTROLYTE MATERIAL AND LIQUID ELECTROLYTE

• Main Authors: OBATA TAKAYUKI, ARAKAWA MOTOHIRO, ONODA CHIE, KOYAMA YUSUKE
• Format: Patent
• Language: English; Japanese
• Published: 17.10.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a composition, which is a composition containing a sulfonyl imide salt, which has superior storage stability even at a high temperature, and which can be used for a liquid electrolyte material and a liquid electrolyte.SOLUTION: A composition comprises an electrolyte, a solvent, and an anion component. The electrolyte contains a sulfonyl imide salt. The anion component contains an acid component having an acid dissociation constant pKa of 0 or more and 6.5 or less (as to acid ionizing more than once, an acid dissociation constant pKa1 of the first stage), of which the concentration is 50 ppm or more and 10000 ppm or less to the electrolyte. In the composition, the concentration of fluoride ions is 100 ppm or less to the electrolyte; and the concentration of sulfate ions is 100 ppm or less to the electrolyte.SELECTED DRAWING: None 【課題】スルホニルイミド塩を含む組成物において、高温でも優れた保存安定性を有し、電解液材料や電解液に使用可能な組成物を提供する。【解決手段】電解質、溶媒及びアニオン成分を含む組成物であり、前記電解質はスルホニルイミド塩を含み、前記アニオン成分は酸解離定数ｐＫａ（複数電離する酸については第１段階の酸解離定数ｐＫａ１）が０以上６．５以下の酸成分を電解質に対して５０ｐｐｍ以上１００００ｐｐｍ以下の濃度で含み、フッ化物イオンの濃度が前記電解質に対して１００ｐｐｍ以下であり、硫酸イオンの濃度が該電解質に対して１００ｐｐｍ以下である。【選択図】なし