Abstract: A secondary battery comprises a case, an electrolyte solution, an electrode assembly, and a porous member. A contour surface of the electrode assembly includes a first region and a second region. At the first region, an electrode plate is exposed. At the second region, the electrode plate is not exposed. At least one of the first region and the second region includes a third region. The third region faces the bottom surface of the case. Relationships of “5.00×10?2<Vp/Ve<2.00×10?1”, “2.00×10?1<Sp1/Se1”, and “Sp2/Se2<1.00×10?1” are satisfied. Ve represents a volume of the electrode assembly. Vp represents a volume of the porous member. Se1 represents an area of the first region. Sp1 represents a contact area between the porous member and the first region. Se2 represents an area of the second region. Sp2 represents a contact area between the porous member and the second region.

Abstract: An electrode for a secondary battery that includes a collector and an active material layer formed on the collector. The active material layer is configured of a plurality of layers including at least a first layer formed on the collector, and a second layer formed on the first layer. An end portion of the collector at an edge portion of the electrode is widened in an electrode thickness direction with respect to a plate thickness of the collector.

Abstract: An electrode body including positive electrode plate and negative electrode plate includes a positive electrode tab portion at an end portion on the sealing plate side. The positive electrode plate is electrically connected to a positive electrode collector including a collector body portion and a collector connection. A pressure-sensitive current breaking mechanism includes a conductive member including an opening portion on an electrode body side, a deformation plate that seals the opening portion, and a collector body portion that is disposed on the electrode body side of the deformation plate and that is connected to the deformation plate. The collector connection is disposed between the current breaking mechanism and one of the large-area side walls of the prismatic outer package, and the positive electrode tab portion is connected to the collector connection.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment includes an electrode assembly, a nonaqueous electrolyte, and a prismatic battery case accommodating the electrode assembly and the nonaqueous electrolyte. The mass energy density of the secondary battery is not less than 200 Wh/kg. The nonaqueous electrolyte secondary battery further includes a non-cellular elastic sheet disposed between the electrode assembly and the battery case. The ratio (A/B) of the thickness (A) of the elastic sheet at 100% SOC to the thickness (B) of the elastic sheet at 0% SOC is 0.05 to 0.3.

Abstract: An electrode for a secondary battery that includes a collector and an active material layer formed on the collector. The active material layer is configured of a plurality of layers including at least a first layer formed on the collector, and a second layer formed on the first layer. An end portion of the collector at an edge portion of the electrode is widened in an electrode thickness direction with respect to a plate thickness of the collector.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment includes an electrode assembly, a nonaqueous electrolyte, and a prismatic battery case accommodating the electrode assembly and the nonaqueous electrolyte. The mass energy density of the secondary battery is not less than 200 Wh/kg. The nonaqueous electrolyte secondary battery further includes a non-cellular elastic sheet disposed between the electrode assembly and the battery case. The ratio (A/B) of the thickness (A) of the elastic sheet at 100% SOC to the thickness (B) of the elastic sheet at 0% SOC is 0.05 to 0.3.

Abstract: An electrode body including a positive electrode plate and a negative electrode plate include a positive electrode tab portion at an end portion on a sealing plate side, a positive electrode collector electrically connected to the positive electrode plate include a collector body portion, a collector extension portion, a collector connection, and a collector connection portion. A pressure-sensitive current breaking mechanism includes a conductive member having an opening portion on an electrode body side, a deformation plate that seals the opening portion, and a collector body portion disposed on the electrode body side of the deformation plate and connected to the deformation plate. The collector extension portion is offset from the collector body portion and is disposed on the sealing plate side with respect to the collector body portion. Positive electrode tab portion is connected to the collector connection bent back at an end portion of the collector extension portion.

Abstract: A nonaqueous electrolyte secondary battery includes a conductive outer can, an electrode body in the outer can, a conductive seal plate tightly closing an open end of the outer can, and a cathode external terminal on the seal plate. The battery further includes a current cutoff mechanism (CID). The CID is located on the electrical conduction pathway between the cathode external terminal and the electrode body and interrupts the electrical coupling therebetween in response to an increased internal pressure in the battery. The CID includes a thin portion of the seal plate and a diaphragm. The diaphragm deforms to interrupt the electrical coupling between the cathode external terminal and the electrode body in response to the increase in the internal pressure in the battery. A cathode collector lead electrically couples the electrode body and the seal plate, and the seal plate connects the diaphragm and the cathode collector lead.

Abstract: An electrode body including a positive electrode plate and a negative electrode plate include a positive electrode tab portion at an end portion on a sealing plate side, a positive electrode collector electrically connected to the positive electrode plate include a collector body portion, a collector extension portion, a collector connection, and a collector connection portion. A pressure-sensitive current breaking mechanism includes a conductive member having an opening portion on an electrode body side, a deformation plate that seals the opening portion, and a collector body portion disposed on the electrode body side of the deformation plate and connected to the deformation plate. The collector extension portion is offset from the collector body portion and is disposed on the sealing plate side with respect to the collector body portion. Positive electrode tab portion is connected to the collector connection bent back at an end portion of the collector extension portion.

Abstract: An electrode body including a positive electrode plate and a negative electrode plate include a positive electrode tab portion at an end portion on a sealing plate side, a positive electrode collector electrically connected to the positive electrode plate include a collector body portion, a collector extension portion, a collector connection, and a collector connection portion. A pressure-sensitive current breaking mechanism includes a conductive member having an opening portion on an electrode body side, a deformation plate that seals the opening portion, and a collector body portion disposed on the electrode body side of the deformation plate and connected to the deformation plate. The collector extension portion is offset from the collector body portion and is disposed on the sealing plate side with respect to the collector body portion. Positive electrode tab portion is connected to the collector connection bent back at an end portion of the collector extension portion.

Abstract: A nonaqueous electrolyte secondary battery includes an electrode body and an electrolytic solution in an outer can and a cathode external terminal on the open-end side of the outer can. The battery further includes a current cutoff mechanism (CID). The CID is located on the electrical conduction pathway between the cathode external terminal and the electrode body and interrupts the electrical coupling therebetween in response to an increased internal pressure in the battery. The CID includes a seal lead, a diaphragm, and a dielectric film. The seal lead has a cylindrical opening on the electrode body side. The diaphragm tightly closes the cylindrical opening and, in response to the increased internal pressure in the battery, deforms to interrupt the electrical coupling between the electrode body and the seal lead. The dielectric film is on the electrode body side of the diaphragm.

Abstract: A nonaqueous electrolyte secondary battery includes a conductive outer can, an electrode body in the outer can, a conductive seal plate tightly closing an open end of the outer can, and a cathode external terminal on the seal plate. The battery further includes a current cutoff mechanism (CID). The CID is located on the electrical conduction pathway between the cathode external terminal and the electrode body and interrupts the electrical coupling therebetween in response to an increased internal pressure in the battery. The CID includes a thin portion of the seal plate and a diaphragm. The diaphragm deforms to interrupt the electrical coupling between the cathode external terminal and the electrode body in response to the increase in the internal pressure in the battery. A cathode collector lead electrically couples the electrode body and the seal plate, and the seal plate connects the diaphragm and the cathode collector lead.

Abstract: A nonaqueous electrolyte secondary battery includes an electrode body and an electrolytic solution in an outer can and a cathode external terminal on the open-end side of the outer can. The battery further includes a current cutoff mechanism (CID). The CID is located on the electrical conduction pathway between the cathode external terminal and the electrode body and interrupts the electrical coupling therebetween in response to an increased internal pressure in the battery. The CID includes a seal lead, a diaphragm, and a dielectric film. The seal lead has a cylindrical opening on the electrode body side. The diaphragm tightly closes the cylindrical opening and, in response to the increased internal pressure in the battery, deforms to interrupt the electrical coupling between the electrode body and the seal lead. The dielectric film is on the electrode body side of the diaphragm.

Abstract: An electrode body including a positive electrode plate and a negative electrode plate include a positive electrode tab portion at an end portion on a sealing plate side, a positive electrode collector electrically connected to the positive electrode plate include a collector body portion, a collector extension portion, a collector connection, and a collector connection portion. A pressure-sensitive current breaking mechanism includes a conductive member having an opening portion on an electrode body side, a deformation plate that seals the opening portion, and a collector body portion disposed on the electrode body side of the deformation plate and connected to the deformation plate. The collector extension portion is offset from the collector body portion and is disposed on the sealing plate side with respect to the collector body portion. Positive electrode tab portion is connected to the collector connection bent back at an end portion of the collector extension portion.

Abstract: An electrode body including positive electrode plate and negative electrode plate includes a positive electrode tab portion at an end portion on the sealing plate side. The positive electrode plate is electrically connected to a positive electrode collector including a collector body portion and a collector connection. A pressure-sensitive current breaking mechanism includes a conductive member including an opening portion on an electrode body side, a deformation plate that seals the opening portion, and a collector body portion that is disposed on the electrode body side of the deformation plate and that is connected to the deformation plate. The collector connection is disposed between the current breaking mechanism and one of the large-area side walls of the prismatic outer package, and the positive electrode tab portion is connected to the collector connection.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A rechargeable lithium battery including a negative electrode made by depositing a noncrystalline thin film composed entirely or mainly of silicon on a current collector, a positive electrode and a nonaqueous electrolyte, characterized in that said nonaqueous electrolyte contains carbon dioxide dissolved therein.

Abstract: 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.