Abstract: In an electrochemical device having an element main body 1A enclosed in an exterior package 1B, a peripheral region of the exterior package 1B is provided with an elastic structure or a plurality of elastic structures R1, R2 having an elastic force in a thickness direction (Z-axis direction) of films. Each of the elastic structures R1, R2 has a first region of the exterior package 1B folded along a film outer edge, and a second region of the exterior package 1B opposed to the first region. Two ends R11, R13 (R21, R23) of the first region in a direction along the film outer edge are in contact with the second region, and between the two ends R11, R13 (R21, R23) there is a space (with a maximum height 2R) between the first region and the second region.

Abstract: An active material contains a triclinic LiVOPO4 crystal particle, while the crystal particle has a spherical form and an average particle size of 20 to 200 nm.

Abstract: A method for manufacturing an active material containing a triclinic LiVOPO4 crystal particle that has a spherical form and an average particle size of 20 to 200 nm. The method includes a step of manufacturing the crystal particle by hydrothermal synthesis.

Abstract: An active material capable of forming an electrochemical device excellent in its discharge capacity and rate characteristic is provided. The active material in accordance with a first aspect of the present invention comprises a compound particle containing a compound having a composition represented by the following chemical formula (1), a carbon layer covering the compound particle, and a carbon particle. The active material in accordance with a second aspect of the present invention comprises a carbon particle and a compound particle having an average primary particle size of 0.03 to 1.4 ?m, being carried by the carbon particle, and containing a compound represented by the following chemical formula (1): LiaMXO4??(1) where a satisfies 0.9?a?2, M denotes one species selected from the group consisting of Fe, Mn, Co, Ni, and VO, and X denotes one species selected from the group consisting of P, Si, S, V, and Ti.

Abstract: A lead 3 of an electrochemical device includes a lead body 3A containing Al, and a bent metallic thin film 3a provided to a tip part of the lead body 3A. The metallic thin film 3a includes a thin film body 3a1 containing Ni, and a plating layer 3a2 containing Sn and covering at least an outer surface of the bent thin film body 3a1. A specific area of an inner surface of the bent thin film body 3a1 and a surface of the lead body 3A are welded in a predetermined area without the plating layer 3a2 being disposed there between.

Abstract: A method for manufacturing an active material containing a triclinic LiVOPO4 crystal particle that has a spherical form and an average particle size of 20 to 200 nm. The method includes a step of manufacturing the crystal particle by hydrothermal synthesis.

Abstract: The present invention provides a method of manufacturing an active material comprising both ?-LiVOPO4 and ?-LiVOPO4. The method of manufacturing an active material in accordance with the present invention comprises a hydrothermal synthesis step of heating a mixture containing a lithium source, a phosphate source, a vanadium source, and water and having a pH greater 7 but smaller than 12.7; and a firing step of firing the mixture after being heated under pressure in the hydrothermal synthesis step.

Abstract: The present invention provides a method of manufacturing an active material which can form an electrochemical device excellent in discharge capacity. The method of manufacturing an active material in accordance with the present invention comprises a hydrothermal synthesis step of heating a mixture including a lithium compound, a metal compound containing one species selected from the group consisting of Fe, Mn, Co, Ni, and V, a phosphorus compound, and water within a reactor while keeping an internal pressure of the reactor at 0.3 MPa or lower by ventilating the inside of the reactor to the outside, and closing the reactor at a time when the temperature of the mixture reaches 100 to 150° C.; and a firing step of firing the mixture after the hydrothermal synthesis step.

Abstract: In an electrochemical device having an element main body 1A enclosed in an exterior package 1B, a peripheral region of the exterior package 1B is provided with an elastic structure or a plurality of elastic structures R1, R2 having an elastic force in a thickness direction (Z-axis direction) of films. Each of the elastic structures R1, R2 has a first region of the exterior package 1B folded along a film outer edge, and a second region of the exterior package 1B opposed to the first region. Two ends R11, R13 (R21, R23) of the first region in a direction along the film outer edge are in contact with the second region, and between the two ends R11, R13 (R21, R23) there is a space (with a maximum height 2R) between the first region and the second region.

Abstract: A lead 3 of an electrochemical device includes a lead body 3A containing Al, and a bent metallic thin film 3a provided to a tip part of the lead body 3A. The metallic thin film 3a includes a thin film body 3a1 containing Ni, and a plating layer 3a2 containing Sn and covering at least an outer surface of the bent thin film body 3a1. A specific area of an inner surface of the bent thin film body 3a1 and a surface of the lead body 3A are welded in a predetermined area without the plating layer 3a2 being disposed there between.

Abstract: Methods of manufacturing an active material capable of improving the discharge capacity of a lithium-ion secondary battery are provided. The first method of manufacturing an active material comprises a hydrothermal synthesis step of heating a mixture containing a lithium source, a phosphate source, a vanadium source, water, and a reducing agent to 100 to 195° C. under pressure; and a heat treatment step of heating the mixture to 500 to 700° C. after the hydrothermal synthesis step. The hydrothermal synthesis step adjusts the ratio [P]/[V] of the number of moles of phosphorus [P] contained in the mixture before heating to the number of moles of vanadium [V] contained in the mixture before heating to 0.9 to 1.2. The second method of manufacturing an active material comprises a hydrothermal synthesis step of heating a mixture containing a lithium source, a phosphate source, a vanadium source, water, and a reducing agent to 200 to 300° C.

Abstract: A method for manufacturing an active material comprising: a hydrothermal synthesis step of heating under pressure, a mixture containing a lithium source, a vanadium source, a phosphoric acid source, water and a water-soluble polymer having a weight average molecular weight of from 200 to 100,000, wherein the ratio of the total mole number of repeating units of the whole water-soluble polymer to the mole number of the vanadium atoms is from 0.02 to 1.0, to produce a precursor of LiVOPO4 having a ?-type crystal structure; and a firing step of heating the precursor of LiVOPO4 having a ?-type crystal structure to obtain LiVOPO4 having a ?-type crystal structure.

Abstract: An active material which can improve the discharge capacity of a lithium-ion secondary battery is provided. The active material of the present invention contains a rod-shaped particle group having a ?-type crystal structure of LiVOPO4. The particle group has an average minor axis length S of 1 to 5 ?m, an average major axis length L of 2 to 20 ?m, and L/S of 2 to 10.

Abstract: An electrode for an electrochemical capacitor includes a sheet-like current collector and a polarizable electrode layer. The polarizable electrode layer is provided on the current collector with a predetermined bare portion left. The polarizable electrode layer has undergone an embossment work and at least part of the bare portion of the current collector has not undergone any embossment work.