摘要:
An object of the present invention is to provide a non-aqueous electrolytic solution which can improve a non-aqueous electrolyte secondary battery in high-temperature storage characteristics and load characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution. The present invention is directed to a non-aqueous electrolytic solution for use in a non-aqueous electrolyte secondary battery which comprises a positive electrode and a negative electrode each being capable of having occluded therein and releasing metal ions, wherein the non-aqueous electrolytic solution contains an electrolyte, a non-aqueous solvent, and a compound represented by the following general formula (A): wherein each of R 1 , R 2 , and Y represents a hydrocarbon group having 1 to 12 carbon atoms and optionally having a substituent, and X represents a hydrogen or fluorine atom, wherein R 1 , R 2 , and Y are the same or different.
摘要:
An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery, the electrolyte comprising a lithium salt; an organic solvent; and an additive, wherein the additive comprises LiPO 2 F 2 , and a compound represented by the following Chemical Formula 1:
摘要:
Provided is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a negative active material and an electrolyte including a lithium salt and a non-aqueous organic solvent, wherein the positive active material includes a nickel-based composite oxide represented by the following Chemical Formula 1, the non-aqueous organic solvent includes ethylene carbonate, and the ethylene carbonate is included in an amount of 7.5 to 27.5 volume% based on the total amount of the non-aqueous organic solvent. €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ[Chemical Formula 1]€ƒ€ƒ€ƒ€ƒ€ƒLiNi x Co y Mn z O 2 (In the above Chemical Formula 1, 0.63
摘要:
Provided is a nonaqueous electrolyte secondary battery including a bottomed cylindrical positive electrode casing, and a negative electrode casing which is fixed to an opening of the positive electrode casing through a gasket. The opening of the positive electrode casing is caulked to the negative electrode casing side to seal an accommodation space. A caulking tip end in the opening of the positive electrode casing is disposed in an inward direction of the negative electrode casing than the lowest point of the negative electrode casing. A diameter d of the nonaqueous electrolyte secondary battery is in a range of 6.6 mm to 7.0 mm, a height h1 of the nonaqueous electrolyte secondary battery is in a range of 1.9 mm to 2.3 mm, a side surface portion of the positive electrode casing is formed in a curved surface shape, a radius of curvature R is set in a range of 0.8 mm to 1.1 mm, and a height h2 of the positive electrode casing is in a range of 65% to 73% with respect to the height h1 of the nonaqueous electrolyte secondary battery.
摘要:
The invention relates to a method or process for modifying the surface of carbon-coated electrochemically active materials such as complex oxides like olivine-type cathode materials. For example, the surface of the carbon-coated material is modified in order to improve the hydrophobic properties thereof. In addition, specific groups can be grafted onto the carbon surface of the cathode material by means of diazonium chemistry, for example, by spontaneous grafting of aryl ions generated on-site by the diazotisation of an arylamine compound.
摘要:
The present invention provides a lithium secondary battery for an ISS which can be discharged at not less than 20 ItA when temperature is -30 degrees centigrade and can be charged at not less than 50 ItA. The positive electrode material consists of a mixture of lithium-containing metal phosphate compound particles whose surfaces are coated with an amorphous carbon material and a conductive carbon material, in which atoms of the surface carbon materials are chemically bonded to one another. The negative electrode material contains at least one kind of particles selected from among graphite particles whose surfaces are coated with an amorphous carbon material, having a specific surface area of not less than 6m 2 /g and soft carbon particles. A mixed electrolyte contains lithium hexafluorophosphate and lithium bis fluorosulfonyl imide.
摘要:
There is provided a non-aqueous electrolyte solution enabling fabrication of a non-aqueous electrolyte solution secondary battery which achieves suppressed gas generation when used under high temperature environment and the improved residual capacity of the battery, and the improved cycle characteristic thereof, and further, is excellent in discharge load characteristic (dischargeable at high rate), and a non-aqueous electrolyte solution secondary battery using the non-aqueous electrolyte solution. There is provided a non-aqueous electrolyte solution for use in a non-aqueous electrolyte solution secondary battery including a positive electrode having a positive electrode active material capable of absorbing and releasing a metal ion and a negative electrode having a negative electrode active material capable of absorbing and releasing a metal ion, which solution contains a bismaleimide compound having a specific structure, and a non-aqueous electrolyte solution secondary battery using the solution.
摘要:
Disclosed are a cathode active material for lithium secondary batteries including lithium-containing metal oxide particles; a first surface treatment layer formed on the surfaces of the lithium-containing metal oxide particles and including at least one compound selected from the group consisting of fluorine-doped metal oxides and fluorine-doped metal hydroxides; and a second surface treatment layer formed on a surface of the first surface treatment layer and including a fluorine copolymer, and a method of manufacturing the same.