Abstract:
PROBLEM TO BE SOLVED: To provide a separator and a battery capable of suppressing reduction in battery characteristics.SOLUTION: The battery includes a positive electrode and a negative electrode that are disposed to face each other through a separator. The negative electrode contains at least one kind of lithium (Li), silicon (Si), and a tin cobalt alloy (SnCo). The separator is provided with a resin layer containing an inorganic material on at least one principle plane of a base material layer. A gas permeability rate of the separator is in a range of 30 sec/100 cc to 680 sec/100 cc.
Abstract:
PROBLEM TO BE SOLVED: To provide a battery capable of improving energy density and battery characteristics, such as cycle characteristics and high temperature storage characteristics.SOLUTION: In the battery, a positive electrode 21 and a negative electrode 22 are arranged to oppose each other with a separator 23 interposed therebetween, and an open circuit voltage in a completely charged state is in a range of from 4.25 V or more to 6.00 V or less. The separator 23 has a base material layer 23A and a surface layer 23B, and the surface layer 23B opposing to the positive electrode 21 is formed of at least one selected from the group consisting of polyvinylidene fluoride, polytetrafluoroethylene, polypropylene and aramid.
Abstract:
PROBLEM TO BE SOLVED: To provide a separator with a heat-resisting insulating layer for attaining a nonaqueous electrolyte secondary battery which is excellent on both safety and high-temperature cycle characteristics in overheating even when used charge upper limit voltage is set up at a high level in a nonaqueous electrolyte secondary battery. SOLUTION: The separator 14 with a heat-resisting insulating layer includes a polyolefin layer 14A, and the heat-resisting insulating layer 14B including a heat-resistant resin and oxidation-resistant ceramic particles on its one side or both sides. The nonaqueous electrolyte secondary battery includes a positive electrode 11, a negative electrode 12, the separator with a heat-resisting insulating layer, and a nonaqueous electrolyte, and an open circuit voltage at a full-charged state per a pair of the positive electrode and the negative electrode is set up to be 4.25-4.55 V. The heat-resisting insulating layer includes the oxidation-resistant ceramic particles at a ratio of 80-90%, and is arranged between at least the positive electrode and the polyolefin layer. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of being miniaturized. SOLUTION: A reformation part 20 has a structure formed by laminating a reformation reaction layer 23 for making fuel react to generate hydrogen, a hydrogen separation membrane 24 for selectively passing hydrogen from among gases generated in the reformation reaction layer 23 therethrough, and a hydrogen supplying plate 25 in order. The hydrogen supplying plate 25 has a lead-out path 26 for sending the hydrogen having passed the hydrogen separation membrane 24 to a power generation part 10 to the surface contacting with the hydrogen separation membrane 24. The hydrogen supplying plate 25 is extended over the lamination region of the hydrogen separation membrane 24 and the reformation reaction layer 23, and unified with the power generation part 10 so that the power generation part faces the lead-out path 26 in the extended region. The reformation part 20 supplies the hydrogen generated using a pressure difference to the power generation part 10 through the lead-out path 26 by controlling internal pressure to be higher than that in the power generation part 10. Thus, the fuel cell can be miniatuarized because a pump and an actuator for carrying hydrogen are not required. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To make high safety and high battery characteristics compatible in a nonaqueous electrolyte battery used by a charging voltage over 4.20 V. SOLUTION: A separator used for the nonaqueous electrolyte secondary battery in which a positive electrode and a negative electrode are opposedly arranged via the separator, and in which an open circuit voltage in a full charged state per a pair of the positive electrode and the negative electrode is in a range of 4.25 V to 6.00 V, has a constitution that the separator has a base material layer made of a polyolefin based resin material, and a surface layer which is formed at least at a positive electrode side face of the base material layer and made of at least one kind of a group consisting of polyvinylidene fluoride, polytetrafluoro ethylene and polypropylene, and that by forming a coating layer in which at least one kind of a group consisting of all aromatic polyamide resin, polyimide and ceramics is contained in, for example, at least one of surfaces of the separator, at least one kind of the group consisting of the all aromatic polyamide resin, polyimide and ceramics exists on the outermost surface of the separator. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a separator with a heat-resistant insulating layer which provides a nonaqueous electrolyte secondary battery excellent in both of safety at the time of overheat and the high temperature cycle characteristic even if charging upper limit voltage is set up at high voltage in a nonaqueous electrolyte secondary battery. SOLUTION: The separator with heat-resistant insulating layer 14 is provided with: a polyolefin layer 14A; and a heat-resistant insulating layer 14B containing heat-resistant resin and oxidation-resistant ceramic particles on one side or both sides of the polyolefin layer. The nonaqueous electrolyte secondary battery is provided with: a positive electrode 11; a negative electrode 12; the separator with heat-resistant layer; and nonaqueous electrolyte, and open circuit voltage of a pair of the positive electrode and the negative electrode is 4.25 to 4.55 V at full charge. The heat-resistant insulating layer contains 60 to 90% oxidation-resistant ceramic particles, and is disposed at least between the positive electrode and the polyolefin layer. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To obtain high safety without decreasing load characteristics even when charging voltage is set to over 4.2 V. SOLUTION: A battery has structure facing a positive electrode 21 and a negative electrode 22 through a separator 23. The separator 23 comprises a plurality of laminated micro-porous membranes, having a thickness of 10-20 μm, a piecing strength in terms of membrane thickness of 20 μm of 300 g or more, and air permeability of one layer out of the plurality of micro-porous membranes is 10% or more of that of the whole separators. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a battery capable of improving energy density and cycle characteristics. SOLUTION: The battery comprises a wound electrode body 10 in which a positive electrode 13 and a negative electrode 14 are wound through a separator 15 and an electrolyte 16. The open circuit voltage at the time of full charging is 4.25 V or more and 6.00 V or less. The electrolyte 16 contains an electrolytic liquid and a polymer containing vinylidene fluoride as a component. Since the polymer containing vinylidene fluoride as a component has a high oxidation stability, it can suppress oxidative degradation of the electrolyte 16 and the separator 15 even if the battery voltage is made higher. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system that can be miniaturized. SOLUTION: A fuel supply 30 is arranged between a power generator 10 for generating power by the reaction between hydrogen and oxygen and a storage 20 for storing liquid fuel. The fuel supply 30 vaporizes the liquid fuel by heat, and supplies it to the power generator 10 by the expansion of the volume with the liquid fuel as a jet, namely by a thermal ink jet system, thus dispensing with a pump and an actuator for conveying the liquid fuel from the storage 30 to the power generator 10 for miniaturization. The storage 30 has a fuel tank chamber 31 for storing the liquid fuel, and a pressure control mechanism 32 for controlling the internal pressure of the fuel tank chamber 31, thus preventing the leakage of the liquid fuel in stop, the backward flow of bubbles in operation, or the like. Air is supplied to the pressure control mechanism 32 as gas for pressurization by an air supply path 51A branched from an air supply pump 51. COPYRIGHT: (C)2006,JPO&NCIPI