摘要:
A lithium-ion secondary battery with excellent durability is provided using a two-phase coexisting compound as a positive electrode active material. This lithium-ion secondary battery is provided with an electrode body having a positive electrode containing a positive electrode active material and a negative electrode containing a negative electrode active material, and a non-aqueous electrolyte solution containing a lithium salt in an organic solvent. The positive electrode active material is mainly composed of a two-phase coexisting compound containing lithium, and also contains particles of a lithium-transition metal oxide with a layered structure. The particles of the layered oxide have an average particle diameter of 2 μm or less, and the percentage content thereof in the positive electrode active material is 5 mass % or less.
摘要:
A lithium-ion secondary battery with excellent durability is provided using a two-phase coexisting compound as a positive electrode active material. This lithium-ion secondary battery is provided with an electrode body having a positive electrode containing a positive electrode active material and a negative electrode containing a negative electrode active material, and a non-aqueous electrolyte solution containing a lithium salt in an organic solvent. The positive electrode active material is mainly composed of a two-phase coexisting compound containing lithium, and also contains particles of a lithium-transition metal oxide with a layered structure. The particles of the layered oxide have an average particle diameter of 2 μm or less, and the percentage content thereof in the positive electrode active material is 5 mass % or less.
摘要:
The present invention provides a water based lithium secondary battery that can inhibit deteriorations in capacity owing to charge-and-discharge operations and maintain a high capacity even after it is charged and discharged repeatedly. The water based lithium secondary battery includes a positive electrode, a negative electrode, a separator 4 sandwiched between these, and an aqueous electrolyte solution obtained by dissolving an electrolyte made of a lithium salt in a water based solvent. As the water based solvent, a pH buffer solution is employed. The buffer solution is obtained by dissolving an acid and its conjugate base's salt, a base and its conjugate acid's salt, a salt made from a weak acid and a strong base, a salt made from a weak base and a strong acid, or a salt made from a weak acid and a weak base in water.
摘要:
The present invention provides a water based lithium secondary battery that can inhibit deteriorations in capacity owing to charge-and-discharge operations and maintain a high capacity even after it is charged and discharged repeatedly. The water based lithium secondary battery includes a positive electrode, a negative electrode, a separator sandwiched between these, and an aqueous electrolyte solution obtained by dissolving an electrolyte made of a lithium salt in a water based solvent. As the water based solvent, a pH buffer solution is employed. The buffer solution is obtained by dissolving an acid and its conjugate base's salt, a base and its conjugate acid's salt, a salt made from a weak acid and a strong base, a salt made from a weak base and a strong acid, or a salt made from a weak acid and a weak base in water.
摘要:
A battery characteristic detecting method according to the invention includes a first step in which constant current discharge from a battery is performed at a predetermined current value, and a voltage during constant current discharge is measured; a second step in which overpotential for mass transfer control in the battery or resistance for the mass transfer control in the battery is calculated based on the voltage measured in the first step; and a third step in which a determination that a characteristic change has occurred in the battery is made, when the overpotential for the mass transfer control in the battery or the resistance for the mass transfer control in the battery calculated in the second step is larger than a predetermined threshold value.
摘要:
A lithium ion secondary battery provided by the present invention has a positive electrode having a current collector and a positive electrode composite layer provided on the current collector. The current collector contains a metal element A as a main component thereof. The positive electrode composite layer contains a two-phase compound containing lithium as a positive electrode active material. The positive electrode composite layer also contains as an additive a compound having a metal element B, in a composition thereof, that has a higher ionization tendency than the metal element A.
摘要:
Provided is a resin composition for sealing material containing 0.1 to 150 parts by weight of a curing agent (B) and 1 to 500 parts by weight of boehmite fine particles (C), based on 100 parts by weight of a compound (A) having polymerizable cyclic ether. Further provided according to the invention is a resin composition for sealing material having excellent water vapor permeation resistance and a sealing material for electroluminescence using the same.
摘要:
A self-locking nut according to the present invention is a self-locking nut including: a first spring portion; a second spring portion provided in an extended manner continuously from the first spring portion and arranged outside the first spring portion; and a nut body to whose upper end marginal portion the second spring portion is fixed, to be screwed onto a bolt, wherein the first spring portion is provided with a fitting portion that has an inside diameter smaller than an outside diameter of a leg portion of the bolt and is fitted with a thread groove formed on the leg portion of the bolt and a latching portion that is provided in an extended manner continuously from a lower end portion of the fitting portion and is protruded from a circumscribed circle of the leg portion of the bolt, and the second spring portion is constructed so as to be latched with the latching portion when the nut body is rotated in a withdrawal direction at a turning force equal to or more than a predetermined force, whereby the nut is prevented from loosening, and removal of the nut can be easily carried out.
摘要:
An antitheft retainer clip according to this invention is a retainer clip 1, with which slits 3 are provided in inserted parts 2 so as to form press-contacting parts 4 and auxiliary parts 5, and comprises the press-contacting parts, which are formed to be substantially the same in width as upper parts of cylinder slits 9, raised parts 10, which are put in pressed contact against the upper parts of the cylinder slits, and inclining parts 11, which are provided continuous to the raised parts.
摘要:
A lithium ion secondary battery provided by the present invention has a positive electrode having a current collector and a positive electrode composite layer provided on the current collector. The current collector contains a metal element A as a main component thereof. The positive electrode composite layer contains a two-phase compound containing lithium as a positive electrode active material. The positive electrode composite layer also contains as an additive a compound having a metal element B, in a composition thereof, that has a higher ionization tendency than the metal element A.