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ADDITIVES FOR IMPROVING THE HIGH TEMPERATURE PERFORMANCE IN NON-AQUEOUS RECHARGEABLE LITHIUM-ION BATTERIES
ADDITIVES FOR IMPROVING THE HIGH TEMPERATURE PERFORMANCE IN NON-AQUEOUS RECHARGEABLE LITHIUM-ION BATTERIES
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机译:改善非水可充电锂离子电池高温性能的添加剂
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摘要
The present invention generally relates to electrochemical batteries, and more specifically, to the combined additives in the non-aqueous electrolyte for rechargeable lithium-ion batteries containing spinel-based cathode that may enhance the performance of the batteries. The mixed additives comprising of 1,8-bis(dialkylamino)naphthalene, wherein alky group is described by CnH2n+1, n=1 to 3, and vinylene carbonate (VC) are added to the electrolyte of the lithium-ion batteries greatly improve the capacity recovery and reduce AC impedance growth during the high temperature storage. The incorporation of the two kinds of additives within the electrolyte of the battery can also improve the high temperature cycling performance.
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机译:发明领域本发明总体上涉及电化学电池,更具体地,涉及用于非水电解质的包含尖晶石基阴极的可再充电锂离子电池中的组合添加剂,其可以增强电池的性能。包含1,8-双(二烷基氨基)萘和烷基的混合添加剂,其中烷基由C n Sub> H 2n + 1 Sub>,n = 1至3和亚乙烯基描述在锂离子电池的电解液中添加碳酸根(VC)可以大大提高容量恢复能力,并减少高温存储过程中AC阻抗的增长。在电池的电解质中结合两种添加剂也可以改善高温循环性能。
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