摘要:
To provide a lithium secondary battery which has high capacity while maintaining excellent cycle characteristic. The lithium secondary battery cathode of the present invention includes a cathode collector formed of a conductive substance, and a cathode active material layer formed of a sintered lithium composite oxide sheet. The cathode active material layer is bonded to the cathode collector by the mediation of a conductive bonding layer. A characteristic feature of the present invention resides in that the cathode active material layer has a thickness of 30 μm or more, a mean pore size of 0.1 to 5 μm, and a voidage of 3% or more and less than 15%.
摘要:
In order to enhance charge and discharge efficiency and to improve cycle characteristics by increasing a facing area between a positive electrode active material and a negative electrode active material, in a negative electrode for lithium secondary battery having a current collector and an active material layer carried on the current collector, the active material layer includes a plurality of columnar particles. The columnar particles include an element of silicon, and are tilted toward the normal direction of the current collector. Angle θ formed between the columnar particles and the normal direction of the current collector is preferably 10°≦θ
摘要:
A battery of the present invention has a strip-shaped electrode group. The electrode group includes a first electrode, a second electrode, and a separator interposed therebetween. The first electrode has a strip-shaped first current collector and a first active material layer carried on one surface thereof. The first active material layer faces the separator. The second electrode has a strip-shaped second current collector and a second active material layer carried on one surface thereof. The second active material layer faces the separator. The electrode group is folded in a zigzag pattern to form a laminate having a plurality of flat portions, at least one first bent portion located on a first end side of the plurality of flat portions in which the first current collector is located on the outermost side, and at least one second bent portion located on a second end side that is opposite to the first end side in which the second current collector is located on the outermost side. The laminate has a first terminal connected to the at least one first bent portion and a second terminal connected to the at least one second bent portion.
摘要:
A solid electrolyte of the present invention is represented by a general formula: LiaPbMcOdNe, where M is at least one element selected from the group consisting of Si, B, Ge, Al, C, Ga and S, and a, b, c, d and e respectively satisfy a=0.62 to 4.98, b=0.01 to 0.99, c=0.01 to 0.99, d=1.070 to 3.985, e=0.01 to 0.50, and b+c=1.0. The solid electrolyte hardly deteriorates in a wet atmosphere.
摘要:
A negative electrode for a lithium secondary battery according to the present invention includes a current collector 12, and an active material layer 14 formed on the current collector 12. The active material layer 14 includes a plurality of negative-electrode active material members 16 disposed on the current collector 12. Each negative-electrode active material member 16 is oxide, including a first region 18 of a relatively high oxygen concentration and a plurality of second regions 20 having an oxygen concentration which is lower than that of the first region 18. The first region 18 extends from a bottom face of each negative-electrode active material member 16 in a direction away from the surface of the current collector. The plurality of second regions 20 are alternately disposed on both sides of the first region 18.
摘要:
A battery of this invention includes: a separator which is folded in a zigzag manner, thereby forming a layered structure having at least one first-electrode holding part and at least one second-electrode holding part which are alternately aligned; a first electrode accommodated in the first-electrode holding part; and a second electrode accommodated in the second-electrode holding part. At least one of the first electrode and the second electrode has at least one protruding part. The first electrode is connected to a first terminal, and the second electrode is connected to second terminal.
摘要:
A solid electrolyte of the present invention is represented by a general formula: LixMOyNz, where M is at least one element selected from the group consisting of Si, B, Ge, Al, C, Ga and S, and x, y and z respectively satisfy x=0.6 to 5.0, y=1.050 to 3.985, and z=0.01 to 0.50. The solid electrolyte hardly deteriorates in a wet atmosphere.
摘要:
The present invention relates to a battery mounted integrated circuit device where an integrated circuit and a solid state battery are formed on the same substrate. In this battery mounted integrated circuit device, a first diffusion layer containing an N-type impurity is formed between a region of a semiconductor substrate where the solid state battery is mounted and a region of the semiconductor substrate where the integrated circuit is mounted, and a second diffusion layer containing an N-type impurity is formed below the region of the semiconductor substrate where the solid state battery is mounted, and overlaps with the first diffusion layer.
摘要:
A battery of this invention includes: a separator which is folded in a zigzag manner, thereby forming a layered structure having at least one first-electrode holding part and at least one second-electrode holding part which are alternately aligned; a first electrode accommodated in the first-electrode holding part; and a second electrode accommodated in the second-electrode holding part. At least one of the first electrode and the second electrode has at least one protruding part. The first electrode is connected to a first terminal, and the second electrode is connected to second terminal.
摘要:
An electrode for a lithium secondary battery including a sheet-like current collector and an active material layer carried on the current collector. The active material layer is capable of absorbing and desorbing lithium, and the active material layer includes a plurality of columnar particles having at least one bend. An angle θ1 formed by a growth direction of the columnar particles from a bottom to a first bend of the columnar particles, and a direction normal to the current collector is preferably 10° or more and less than 90°. When θn+1 is an angle formed by a growth direction of the columnar particles from an n-th bend counted from a bottom of the columnar particles to an (n+1)-th bend, and the direction normal to the current collector, and n is an integer of 1 or more, θn+1 is preferably 0° or more and less than 90°.