Abstract: An anode for a secondary battery capable of improving cycle characteristics, a secondary battery using the anode, and a method of manufacturing an anode for secondary battery. An anode active material layer is formed by vapor phase deposition method, and contains Si as an element. In the anode active material layer, there are a plurality of primary particles grown in the thickness direction. The primary particles aggregate and form a plurality of secondary particles. At least some of the primary particles have shape curved in the identical direction to an anode current collector on the cross section in the thickness direction. Thereby, stress due to expansion and shrinkage due to charge and discharge can be relaxed.

Abstract: An anode which can improve contact characteristics between an active material layer and anode lead and can prevent electrical resistance from increasing, a method of manufacturing the anode, and a battery including the anode are provided. An active material layer containing silicon as an element is provided on a current collector. An anode lead is bonded to the active material layer. At least part of a bond region between the anode lead and the active material layer is made of copper or an alloy containing copper. Thereby, the electrical resistance can be prevented from being increased even though the anode lead is bonded to the active material layer. The anode lead may be made of copper or an alloy containing copper. Otherwise, coating layer made of copper or an alloy containing copper may be provided on the surface of a base.

Abstract: An anode for secondary battery capable of improving cycle characteristics, a secondary battery using the anode, and a method of manufacturing an anode for secondary battery are provided. An anode active material layer is formed by vapor phase deposition method, and contains Si as an element. In the anode active material layer, there are a plurality of primary particles grown in the thickness direction. The primary particles aggregate and form a plurality of secondary particles. At least some of the primary particles have shape curved in the identical direction to an anode current collector on the cross section in the thickness direction. Thereby, stress due to expansion and shrinkage due to charge and discharge can be relaxed.

Abstract: A battery capable of improving cycle characteristics is provided. An anode includes: an anode active material layer including an anode active material on an anode current collector, the anode active material including silicon (Si) and having a plurality of pores, in which after electrode reaction, the volumetric capacity of a pore group with a diameter ranging from 3 nm to 200 nm both inclusive per unit weight of silicon is 0.3 cm3/g or less, and the rate of change in the amount of mercury intruded into the plurality of pores is distributed so as to have a peak in a diameter range from 200 nm to 15000 nm both inclusive, the rate of change in the amount of mercury intruded being measured by mercury porosimetry.

Abstract: An evaporation apparatus that is capable of stably forming a good quality thin film and is highly suitable for mass production is provided. The evaporation apparatus include an evaporation source discharging an evaporation material by heating, a retention member retaining an evaporation object, and a heat shield member that is located between the evaporation source and the evaporation object retained by the retention member, has an opening for passing the evaporation material in a state of vapor phase from the evaporation source to the evaporation object, and shields the evaporation object from part of radiation heat of the evaporation source. The heat shield member is located closer to the evaporation source than to the retention member.

Abstract: A secondary battery having high cycle characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolyte. In the anode, an anode active material layer containing silicon, carbon, and oxygen as an anode active material is provided on an anode current collector. In the anode active material, a content of carbon is from 0.2 atomic % to 10 atomic % both inclusive, and a content of oxygen is from 0.5 atomic % to 40 atomic % both inclusive. A ratio from 0.1% to 17.29% both inclusive of the silicon contained in the anode active material exists as Si—C bond.

Abstract: A battery capable of improving cycle characteristics and a manufacturing yield is provided. An anode includes: an anode current collector; and an anode active material layer arranged on the anode current collector, in which the anode active material layer includes an anode active material including a plurality of pores, and the rate of change in the amount of mercury intruded into the plurality of pores is distributed so as to have a peak in a diameter range from 80 nm to 1200 nm both inclusive, the amount of mercury intruded being measured by mercury porosimetry.

Abstract: An anode capable of relaxing the stress concentration and improving the characteristics and a battery using it are provided. The anode includes an anode current collector and an anode active material layer containing silicon (Si) as an element, wherein the anode active material layer has a metal element increasing and decreasing region in which a metal element is contained as an element, and a concentration of the metal element is increased and then decreased in a thickness direction.

Abstract: A battery using the anode, and methods of manufacturing the anode and the battery are provided. The battery is capable of relaxing stress while securing the contact characteristics between an anode current collector and an anode active material layer, and capable of improving the characteristics. The anode active material layer containing Si as an element is provided on the anode current collector. The anode active material layer includes a first anode active material layer having a first particle formed by being grown on the anode current collector by vapor-phase deposition method and a second anode active material layer having a second particle with an average particle diameter ranging from 0.2 ?m to 20 ?m which is deposited on the first anode active material layer by coating the first anode active material layer with the second particles.

Abstract: An anode capable of improving cycle characteristics and a battery using it are provided. An anode active material layer containing Si is provided on an anode current collector. The anode current collector is roughened by providing a projection on a base material with a ten point height of roughness profile Rz1 of 2.0 ?m or less. A value of a difference, Rz2?Rz1 obtained by subtracting the ten point height of roughness profile Rz1 of the base material from a ten point height of roughness profile Rz2 of the anode current collector is from 0.2 ?m to 5.1 ?m. Thereby, even when the anode active material is expanded and shrunk due to charge and discharge, breakage of the anode current collector, fall off of the anode active material layer and the like can be prevented.

Abstract: An anode capable of relaxing the stress concentration and improving the characteristics and a battery using it are provided. The anode includes an anode current collector and an anode active material layer containing silicon (Si) as an element, wherein the anode active material layer has a metal element increasing and decreasing region in which a metal element is contained as an element, and a concentration of the metal element is increased and then decreased in a thickness direction.

Abstract: An anode capable of relaxing the stress concentration and improving the characteristics and a battery using it are provided. The anode includes an anode current collector and an anode active material layer containing silicon (Si) as an element, wherein an anode active material layer has a metal element increasing and decreasing region in which a metal element is contained as an element, and a concentration of the metal element is increased and then decreased in a thickness direction.

Abstract: A negative electrode is provided. The negative electrode includes a negative electrode current collector, and a negative electrode active material layer formed over the negative electrode current collector, and including a plurality of columnar bodies. An organic material layer having ion conductivity is held by said negative electrode active material layer, said organic material layer is formed at least in an inside of each of said columnar bodies. The active material layer may include silicon.

Abstract: A secondary battery is provided that is capable of improving the cycle characteristics. The secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated into a separator provided between the cathode and the anode. In the anode, an anode active material layer and a compound layer are provided on both faces of an anode current collector. The anode active material layer contains a plurality of anode active material particles. The anode active material particles have a multilayer structure of an anode active material containing silicon as an element. The thickness of each layer in the multilayer structure ranges from 50 nm to 1050 nm. Thus, contact characteristics between each layer, contact characteristics between the anode active material layer and the anode current collector, and current collectivity are improved.

Abstract: A battery capable of improving cycle characteristics is provided. An anode active material layer is formed by a vapor phase method, and includes Si as an element. In the anode active material layer, a plurality of primary particles formed by growth in a thickness direction are included, and the plurality of primary particles are agglomerated to form a plurality of secondary particles. Each secondary particle is separated by a groove formed by charge and discharge, and some of primary particles are split particles split by the groove. The average number of the split particles per secondary particle in 5 or more adjacent secondary particles is 10 or more. Moreover, the primary particles and the secondary particles are inclined to the same side.

Abstract: A battery capable of improving cycle characteristics is provided. An anode contains Si as an element. Where the Li insertion amount per unit area when the anode is fully charged is A, the Li amount capable of being electronically inserted per unit area of the anode is B, and the maximum utilization ratio C % is (A/B)×100, the maximum utilization ratio C % is in the range from 35% to 85%. The surface roughness Ra value of the anode current collector is 0.2 ?m or more.

Abstract: A secondary battery having a feature in which a positive electrode, a negative electrode and electrolyte are provided; the negative electrode includes a negative electrode active material layer which is alloying at least at a portion of a boundary face with a negative electrode current collector; an approximately tabular electrode body structure is formed by a constitution in which a laminated body of the lamellar positive electrode and the lamellar negative electrode is wound or folded; and in the approximately tabular electrode body structure, relation of B?1.5A is satisfied when length in a perpendicular direction with respect to a bended portion of the laminated body is made to be A and length in a parallel direction with respect to the bended portion of the laminated body is made to be B.

Abstract: There is provided a battery including a positive electrode that includes an active material layer formed on a positive electrode current collector; a negative electrode that includes active material layers formed on first and second principal planes of a negative electrode current collector and the active material layer on the second principal plane has an alloyed region smaller than an alloyed region the active material layer has on the first principal plane between the second principal plane and the current collector; and an electrolyte.

Abstract: The invention provides an anode capable of relaxing stress due to expansion and shrinkage of an anode active material layer associated with charge and discharge, or an anode capable of reducing structural destruction of the anode active material layer and reactivity between the anode active material layer and an electrolyte associated with charge and discharge, and a battery using it. The anode active material layer contains an element capable of forming an alloy with Li, for example, at least one from the group consisting of simple substances, alloys, and compounds of Si or Ge. An interlayer containing a material having superelasticity or shape-memory effect is provided between an anode current collector and the anode active material layer. Otherwise, the anode current collector is made of the material having superelasticity or shape-memory effect. Otherwise, a thin film layer containing the material having superelasticity or shape-memory effect is formed on the anode active material layer.

Abstract: A secondary battery having high cycle characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolyte. In the anode, an anode active material layer containing silicon, carbon, and oxygen as an anode active material is provided on an anode current collector. In the anode active material, a content of carbon is from 0.2 atomic % to 10 atomic % both inclusive, and a content of oxygen is from 0.5 atomic % to 40 atomic % both inclusive. A ratio from 0.1% to 17.29% both inclusive of the silicon contained in the anode active material exists as Si—C bond.