摘要:
An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.
摘要:
Disclosed are an electrolyte for lithium secondary batteries including 10 wt% to 90 wt% of an ester based solvent and 10 wt% to 90 wt% of a carbonate based solvent with respect to the total weight of a non-aqueous solvent, and a lithium secondary battery including the same.
摘要:
Disclosed are a non-aqueous electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the non-aqueous electrolyte. The non-aqueous electrolyte for a rechargeable lithium battery includes a lithium salt; a non-aqueous organic solvent; and trialkylsilyl borate as an additive, wherein the non-aqueous organic solvent includes a solvent having a low melting point of less than or equal to about -50°C and a ionic conductivity of greater than or equal to about 6S/cm at 25°C.
摘要翻译:本发明公开了一种用于可充电锂电池和可充电锂电池,包括非水电解质的非水电解质。 用于可再充电锂电池的非水电解质包括锂盐; 非水有机溶剂中; 和三烷基甲硅烷硼酸盐作为添加剂,worin非水有机溶剂包括具有小于或等于低的熔点至约-50℃和大于或等于25°的离子导电率至约6 S / cm的溶剂的 C.
摘要:
The present invention provides an electrolyte solution for a lithium ion secondary battery comprising 65 to 99% by volume of a phosphate ester compound, 0.01 to 30% by volume of a fluorinated carbonate compound, and 0.1 to 10% by volume of a halogenated phosphate ester compound and/or 0.1 to 30% by volume of a solvent having a specific dielectric constant of 15 or more, and a lithium ion secondary battery having the same.
摘要:
Disclosed herein are lithium or lithium-ion batteries that employ aluminum or aluminum alloy current collector protected by conductive coating in combination with electrolyte containing aluminum corrosion inhibitor and a fluorinated lithium imide or methide electrolyte which exhibit surprisingly long cycle life at high temperature.
摘要:
The present invention provides a lithium secondary battery which has improved safety, mainly coming from use of an electrolyte solution which is not inflammable at room temperature (20°C), while not deteriorating output characteristics at low temperatures and room temperature or output maintenance characteristics after storage at high temperature (50°C). The lithium secondary battery of the present invention, encased in a container, is provided with a cathode and an anode, both capable of storing/releasing lithium ions, a separator which separates these electrodes from each other, and an electrolyte solution containing a cyclic carbonate and a linear carbonate as solvents and a compound such as VC at composition ratios of 18.0 to 30.0%, 74.0 to 81.9% and 0.1 to 1.0%, respectively, based an the whole solvents, all percentages by volume.
摘要:
A lithium secondary battery includes a cathode, an anode, a separator interposed between the cathode and the anode, and a non-aqueous electrolytic solution obtained by dissolving lithium salt to a non-aqueous solvent. The separator includes a porous substrate having pores; and a porous coating layer located on at least one surface of the porous substrate and having inorganic particles and a binder polymer, the inorganic particles being connected and fixed to each other by means of the binder polymer, the porous coating layer having pores therein formed by interstitial volumes among the inorganic particles. The non-aqueous solvent is a high-viscous non-aqueous solvent having a viscosity of 1.4 cP or above at 25°C. This lithium secondary battery gives improved safety and excellent charging/discharging characteristics since it has the high-viscous non-aqueous solvent and the separator with good wettability against the solvent.