摘要:
To provide a means capable of improving the cycle durability of an electric device such as a lithium ion secondary battery. A negative electrode active material which includes a silicon-containing alloy having a composition represented by Chemical Formula (I) : Si x Sn y M z A a (where, A is unavoidable impurities, M is one or two or more transition metal elements, x, y, z, and a represent values of percent by mass, and 0
摘要:
The present invention provides a control device of a secondary battery. The control device of the secondary battery using, as a positive electrode material, a positive electrode active material that shows a difference of an open circuit voltage curve between during charge and discharge, has a judging unit that judges, on the basis of a charge-discharge state of the secondary battery, whether or not calculation of a current SOC of the secondary battery is possible; and a charge controlling unit that, when judged that the calculation of the current SOC of the secondary battery is not possible by the judging unit, charges the secondary battery up to a predetermined fully charged state.
摘要:
It is an object of the present invention to provide an all solid-state battery and a method for manufacturing all solid-state battery capable of reducing damage during the manufacturing process. An all solid-state battery comprising: a positive electrode current collector; a positive electrode active material layer provided on a surface of the positive electrode current collector; a first elastic member covering a periphery of the positive electrode active material layer and having an elastic modulus less than or equal to an elastic modulus of the positive electrode active material layer; a solid electrolyte layer facing the positive electrode current collector with the first elastic member and the positive electrode active material layer in between; a negative electrode current collector facing the positive electrode current collector with the solid electrolyte layer in between; and a negative electrode active material layer provided between the negative electrode current collector and the solid electrolyte layer and disposed inside a periphery of the solid electrolyte layer, is provided.
摘要:
[Problem] To provide a method for manufacturing a battery in which it is possible to reduce the internal resistance of the battery by molding a unit cell before an initial charging step. [Solution] This method for manufacturing a battery 10 has: a unit cell formation step (S20) for forming a unit cell in which a positive electrode is obtained by a positive electrode active material layer containing an electrolytic solution being disposed on a positive electrode current collector, a negative electrode is obtained by a negative electrode active material layer containing an electrolytic solution being disposed on a negative electrode current collector, and a separator interposed between the positive electrode and the negative electrode; a surface pressing step (S40) for applying pressure by bringing a pressing surface of a pressing part into surface contact with one unit cell or with two or more stacked unit cells from the stacking direction; and an initial charging step (S50) for charging the one unit cell or the two or more stacked unit cells after performing the surface pressing step.
摘要:
A transition metal oxide containing solid solution lithium according to the present invention contains a transition metal oxide containing lithium, which is represented by a chemical formula: Li 1.5 [Ni a Co b Mn c [Li] d ]O 3 (where Li is lithium, Ni is nickel, Co is cobalt, Mn is manganese, O is oxygen, a, b, c and d satisfy relationships: 0
摘要:
A method of manufacturing a battery electrode includes a powder supply step, a vibration step, a sorting step, a moving step, and a deposition step, in the powder supply step, a powder 60 composed of granulated particles is supplied, in the vibration step, vibration is applied to the powder, in the sorting step, the powder is caused to pass through at least one opening H1, H2 to adjust a particle diameter of the granulated particles to a particle diameter that allows passing through the opening, in the moving step, the powder that has passed through the opening is moved from an outlet position P1 of the opening to a supply position P2 where the powder is supplied to the surface of a current collector 31, and in the deposition step, the powder is deposited on the surface of the current collector. With the method of manufacturing a battery electrode, it is possible to provide a battery electrode that can improve battery performance by making a thickness and a density of the powder composed of granulated particles supplied onto the current collector uniform.
摘要:
[Problem] To provide a method for manufacturing a battery in which the internal resistance of the battery can be reduced by molding unit cells during stacking of the unit cells. [Solution] A method for manufacturing a battery, the method having a stacking step in which a plurality of unit cells 20 are stacked, the unit cells being obtained by stacking a positive electrode that is obtained by a positive electrode active material layer containing an electrolytic solution being disposed on a positive electrode current collector, a negative electrode that is obtained by a negative electrode active material layer containing an electrolytic solution being disposed on a negative electrode current collector, and a separator interposed between the positive electrode and the negative electrode. In the stacking step, each time one of the unit cells is stacked, the stack of the unit cells are pressed from the stacking direction.
摘要:
The present invention provides a separator for lithium ion battery capable of achieving both excellent handling properties and suppression of thermal deformation without changing the thickness of the separator. The present invention is a separator for a lithium ion battery, the separator being disposed between a flat-plate-like positive electrode collector and a flat-plate-like negative electrode collector. The separator for a lithium ion battery is characterized by comprising: a sheet-like separator body a polyolefin porous membrane; and a frame-like member that is arranged annularly along the outer periphery of the separator body, wherein the frame-like member a heat-resistant annular support member and a seal layer that is disposed on the surface of the heat-resistant annular support member and is capable of thermocompression bonding with the positive electrode collector or the negative electrode collector.