摘要:
Contactless two-line type timer circuit operable stably for a load of even a small current. In the circuit comprising substantially a full-wave rectifying circuit connected through the load to AC source, a thyristor connected across output terminals of the rectifying circuit and means for applying pulses to the gate of the thyristor after a predetermined time period, a first resistance is inserted between the cathode of the thyristor and negative side output terminal of the rectifying circuit and a second resistance is inserted between the gate of the thyristor and said negative side output terminal so as to allow the thyristor to be of a lower gate sensitivity and to be capable of keeping the gate voltage of the thyristor always larger than the cathode voltage.
摘要:
Deterioration of the degree of vacuum in a vacuum chamber is prevented while securing adequate cooling performance by gas cooling. A substrate 21 is provided in a vacuum, and the cooling body 1 is provided close to a film non-formation surface of the substrate 21. A thin film is formed by depositing a film forming material on a film formation surface of the substrate 21 while introducing a cooling gas into between the substrate 21 and the cooling body 1. At this time, a gas which reacts with the film forming material is introduced as the cooling gas.
摘要:
In a purifying method for metal grade silicon, metal grade silicon with a silicon concentration not less than 98 wt % and not more than 99.9 wt % is prepared. The metal grade silicon contains aluminum not less than 1000 ppm and not more than 10000 ppm by weight. The metal grade silicon is heated at a temperature not less than 1500° C. and not more than 1600° C. in an inert atmosphere under pressure not less than 100 Pa and not more than 1000 Pa, and maintained at the temperature in the atmosphere for a predetermined period.
摘要:
A negative electrode active material layer 3 containing at least one element selected from the group consisting of silicon, germanium, and tin is formed on a negative electrode collector 1. A negative electrode 11 is prepared by forming a lithium metal layer on the negative electrode active material layer 3. Also prepared is a positive electrode 11 having a configuration in which a positive electrode active material layer 6 containing a composite oxide represented by a general formula Li1-xMO2, where 0.2≦x≦0.6, and M includes at least one transition metal selected from the group consisting of cobalt, nickel, and manganese, is formed on a positive electrode current collector 5. A lithium secondary battery 100 is assembled from the negative electrode 13, the positive electrode 11, and a separator 4.
摘要:
In a method for examining a negative electrode of a battery, a total thickness of a current collector and an active material layer is measured. Then, in order to estimate a composition of the active material layer, the total resistivity of the current collector and the active material layer is measured.
摘要:
A manufacturing method according to the present invention includes a step of allowing lithium to deposit on a substrate provided with a layer capable of forming a compound together with lithium. A first beta ray and a second beta ray are emitted toward the substrate for irradiation before the deposition step to measure backscattering, from the substrate, of the first beta ray and the second beta ray. The first beta ray and the second beta ray are emitted toward the substrate for irradiation after the deposition step to measure backscattering, from the substrate, of the first beta ray and the second beta ray. A decrement in backscattering of the first beta ray before and after lithium deposition and a decrement in backscattering of the second beta ray before and after lithium deposition are calculated. The deposition step is controlled depending on the decrement in the backscattering of the first beta ray and the decrement in the backscattering of the second beta ray.
摘要:
In a method for manufacturing a negative electrode for a battery, an active material layer including a metallic element M and an element A that is at least any one of oxygen, nitrogen, and carbon is formed on a current collector. This active material layer is irradiated with an X-ray and at least one of intensity of a Kα ray of the element A and intensity of a Kα ray of the metallic element M in fluorescent X-rays generated from the active material layer is measured.
摘要:
A negative electrode for a secondary battery includes a separator; a negative electrode active material layer which is fixed to the separator and can store and emit lithium ions; and a current collector layer formed on the side of the separator opposite to the negative electrode active material layer. The negative electrode active material layer contains at least one selected from the group consisting of silicon, silicon alloys, compounds containing silicon and oxygen, compounds containing silicon and nitrogen, compounds containing silicon and fluorine, tin, tin alloys, compounds containing tin and oxygen, compounds containing tin and nitrogen, and compounds containing tin and fluorine.
摘要:
The present invention provides a vacuum deposition apparatus configured to simultaneously form a power collecting lead forming portion and an electrode active material portion of a lithium-ion secondary battery and having excellent mass productivity. With shutters 12a and 12b closed, a substrate 4 winding around a first roll 3 is unroll to be conveyed to a second roll 8, and the substrate 4 stops when it reaches first and second deposition possible regions 60a and 60b. Here, the shutter 12a opens, and a deposition material in a crucible of an evaporation source 9 is evaporated to be supplied to a surface of the substrate 4 which is located in the first deposition possible region 60a. With this, a first layer is formed as a deposited film on the surface of the substrate 4. After the deposition is carried out with respect to the substrate 4 for a predetermined period of time, the shutter 12a is closed. Next, the substrate 4 is again conveyed and stops when the portion on which the deposition has been carried out in the first deposition possible region 60a has reached the second deposition possible region 60b. The shutters 12a and 12b open, and the deposition is carried out again. Thus, the first layer is formed in the first deposition possible region 60a, and the second layer having a different growth direction from the first layer is formed as the deposited film on the first layer in the second deposition possible region 60b.
摘要:
Includes the steps of preparing a sheet-like current collector 4 having a plurality of bumps 4A on a surface thereof, the plurality of bumps having a height of 3 μm or greater and 10 μm or less; and forming an active material body having a stacked structure on each of the bumps 4A of the current collector 4. The step of forming the active material body includes a first layer vapor deposition step of causing a vaporized vapor deposition material to be incident on the surface of the current collector 4 in a direction inclined with respect to the normal H to the current collector 4 to form a first layer 101a of the active material body on each bump 4A, the first layer 101a being located closest to the current collector; and a second layer vapor deposition step of causing the vaporized vapor deposition material to be incident on the surface of the current collector 4 in a direction inclined, with respect to the normal H to the current collector 4, opposite to the incidence direction of the vapor deposition material in the first layer vapor deposition step to form a second layer 102a on at least a part of the first layer 101a. In the first layer vapor deposition step, vapor deposition is performed while moving the current collector 4 in a direction in which the incidence angle ω of the vapor deposition material with respect to the normal H to the current collector 4 is decreased.