ELECTROLYTE, SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND POWER SUPPLY FOR FIXATION

• Main Authors: SEKIGUCHI YUMIKO, HOSHINA KEIGO, KUBOKI TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide an electrolyte capable of realizing a secondary battery that indicates excellent discharge efficiency and a discharge capacity, the secondary battery that indicates the excellent discharge efficiency and the discharge capacity, a battery pack that provides this secondary battery, a vehicle that provides the battery pack and a power supply for fixation.SOLUTION: According to an embodiment, the present invention provides an electrolyte containing an aqueous solvent. The aqueous solvent contains water and phosphate ester. A content amount of the phosphate ester against the aqueous solvent is 1 mol% or more and less than 2.5 mol%.SELECTED DRAWING: Figure 1 【課題】優れた充放電効率および放電容量を示す二次電池を実現できる電解質、優れた充放電効率および放電容量を示す二次電池、この二次電池を備えた電池パック、並びに、この電池パックを備えた車両および定置用電源を提供すること。【解決手段】実施形態によれば、水系溶媒を含む電解質が提供される。水系溶媒は、水とリン酸エステルとを含む。水系溶媒に対するリン酸エステルの含有量は、1 mol%以上2.5 mol%未満である。【選択図】 図１