Battery

• Main Authors: YU LIQIU, TONG ZHIQIANG, LI SULI
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a battery, the battery comprises a positive plate, a negative plate and an electrolyte, the positive plate comprises a positive active material, and the electrolyte comprises a lithium salt, an organic solvent and an additive; the additive at least comprises a nitrile compound and fluoroethylene carbonate at the same time; the organic solvent comprises a boiling point gt; and a 100 DEG C solvent. The high-temperature cycle performance of the battery under high voltage is remarkably improved by regulating and controlling the positive active material in the battery, the specific surface area of the positive active material and the dosage of the additive and the organic solvent in the electrolyte. 本发明提供一种电池，所述电池包括正极片、负极片和电解液，所述正极片包括正极活性物质，所述电解液包括锂盐、有机溶剂和添加剂；所述添加剂至少同时包括腈类化合物和氟代碳酸乙烯酯；所述有机溶剂包括沸点>100℃的溶剂。通过对电池中正极活性物质及其比表面积、电解液中添加剂和有机溶剂用量的调控，显著提升了电池在高电压下的高温循环性能。