Abstract: The present invention provides an electrolytic solution comprising a lithium salt and an organic solvent, wherein the lithium salt has a concentration of 2.0 mol/L or more and 3.0 mol/L or less, the lithium salt comprises a first lithium salt and a second lithium salt, the first lithium salt is lithium bis(fluorosulfonyl)imide, and the second lithium salt is one or more selected from the group consisting of lithium hexafluorophosphate, lithium difluoro(oxalato)borate and lithium difluorophosphate.

Abstract: To provide a negative electrode for a lithium ion secondary battery having more improved durability than conventionally, and a lithium ion secondary battery including the same. A negative electrode for a lithium ion secondary battery including a negative electrode active material in which an organic molecule having a dielectric constant larger than that of an electrolyte solvent is chemically bonded, and a lithium ion secondary battery including the same. Preferable examples of the organic molecule include a molecule having a relative dielectric constant of 90 or more at a frequency of 10 kHz, a molecule having a molecular structure that undergoes polarization in a single molecule or between molecules, a zwitter ion compound having a positive electric charge and a negative electric charge in one molecule, hydroxy acid, and a molecule having a molecular weight of 39 to 616.

Abstract: To provide an electrolytic solution for lithium metal battery, which is capable of reducing the concentration of an electrolyte salt in an electrolytic solution and is excellent in safety and durability during charging/discharging. Disclosed is an electrolytic solution for lithium metal battery, comprising an organic solvent and an electrolyte salt, the electrolyte salt comprising a lithium salt, and the organic solvent comprising a first organic solvent having a vapor pressure at 25° C. of 0.003 MPa or more and having no flash point, and a second organic solvent having a vapor pressure at 25° C. of 0.007 MPa or less.

Abstract: A lithium-metal secondary battery, which includes a highly reduction-resistant electrolytic solution, including 2 to 6 mol of electrolyte per L of solvent and also having a lithium deposition dissolution efficiency of 98.5% or more, which lithium deposition dissolution efficiency is the proportion of the amount of redissolution of lithium to the amount thereof deposited on the copper surface, wherein the relative density of a lithium metal layer in a negative electrode is 40 to 85%. In addition, a lithium-metal secondary battery, which includes a highly oxidation-resistant electrolytic solution, including 2 to 6 mol of electrolyte per L of solvent and also having a voltage of 5.5 V or more when the current density is 0.4 mA/cm2 using lithium as a counter electrode and platinum as a working electrode, wherein the relative density of a lithium metal layer in a negative electrode is 70 to 95%.

Abstract: Provided is a lithium metal secondary battery, including: a positive electrode; a negative electrode current collector; an electrolyte layer provided between the positive electrode and the negative electrode current collector; an intermediate layer provided between the positive electrode and the negative electrode current collector and including an expandable and contractible, three-dimensional structure; and an ionic liquid held within the expandable and contractible, three-dimensional structure.

Abstract: Provided are: an electrode for a lithium-ion secondary battery, said electrode enabling a battery having a high volumetric energy density to be attained, without reducing heat stability, even if a positive electrode active material that contains a high percentage of Ni is used; and a lithium-ion secondary battery that uses the positive electrode. An electrolyte and highly-dielectric solid particles are present in an electrode mixture layer at a specific volume ratio. Specifically, the electrode for a lithium-ion battery is configured such that the electrode mixture layer includes an electrode active material, a highly-dielectric solid oxide, and an electrolyte, wherein the volume ratio of the electrolyte and the highly-dielectric solid oxide in the electrode mixture layer is set in the range of 99:1 to 76:24.

Abstract: The purpose of the present invention is to provide an electrode for a lithium-ion secondary battery that is capable of satisfying both heat stability and durability, and a lithium-ion secondary battery that uses the positive electrode. According to the present invention, a specific electrolyte and highly-dielectric solid particles are present in an electrode mixture layer. Specifically, the electrode for a lithium-ion battery is configured such that the electrode mixture layer includes an electrode active material, a highly-dielectric solid oxide, and an electrolyte, wherein the electrolyte has an average molecular weight of a solvent of at least 110, a flash point of at least 21° C., and a viscosity of at least 3.0 MPa·s.

Abstract: To provide an electrode for a lithium ion secondary battery in which the binding strength of an electrode active material can be increased without increasing the amount of a binder, and a desirable energy density of the lithium ion secondary battery can be achieved, and a method of manufacturing the same. An electrode for a lithium ion secondary battery includes an electrode active material, a dendritic polymer, and a binder. The dendritic polymer is chemically bonded to a surface of the electrode active material. The dendritic polymer and the binder are chemically bonded to each other.

Abstract: To provide a negative electrode for non-aqueous secondary battery, the negative electrode having excellent durability. A negative electrode for non-aqueous electrolyte secondary battery, wherein a multi-branched molecule is bonded to a surface of a negative electrode active material. Since direct contact of an electrolytic solution on a lithium insertion surface of a negative electrode active material is suppressed by disposing a multi-branched polymer on a surface of the negative electrode active material, it is possible to suppress decomposition of the electrolytic solution, whereby the growth of the SEI is suppressed. Thereby, lithium consumption is reduced and long-term storage characteristics are improved, so that a non-aqueous electrolyte secondary battery having an improved capacity retention rate can be provided.

Abstract: To provide a negative electrode for a lithium ion secondary battery having more improved durability than conventionally, and a lithium ion secondary battery including the same. A negative electrode for a lithium ion secondary battery including a negative electrode active material in which an organic molecule having a dielectric constant larger than that of an electrolyte solvent is chemically bonded, and a lithium ion secondary battery including the same. Preferable examples of the organic molecule include a molecule having a relative dielectric constant of 90 or more at a frequency of 10 kHz, a molecule having a molecular structure that undergoes polarization in a single molecule or between molecules, a zwitter ion compound having a positive electric charge and a negative electric charge in one molecule, hydroxy acid, and a molecule having a molecular weight of 39 to 616.

Abstract: An electric storage device is provided with a positive electrode having a positive-electrode mixture layer including a positive-electrode active material. The positive-electrode active material includes a lithium-vanadium-phosphate from 8% to 70% by mass and a lithium-nickel complex oxide from 20% to 82% by mass. A coating concentration of the positive-electrode mixture layer is from 4 mg/cm2 to 20 mg/cm2. The lithium-nickel complex oxide includes a nickel element from 0.3 mol to 0.8 mol with respect to a lithium element of 1 mol.

Abstract: A predoping material is used for an alkali metal ion electric storage device and is represented by Formula (1): RSM)n??(1) where M represents lithium or sodium; n represents an integer of 2 to 6; and R represents an aliphatic hydrocarbon, optionally substituted aromatic hydrocarbon, or optionally substituted heterocycle having 1 to 10 carbon atoms).

Abstract: Provided is a lithium ion secondary battery having a large energy density and an improved capacity retention rate after repeated use even under high voltage application (cycle characteristics), and excellent in safety. A lithium ion secondary battery containing a negative electrode for reversibly intercalating and deintercalating lithium ions, a positive electrode containing lithium vanadium phosphate, and a non-aqueous electrolytic solution containing lithium fluoroethyl phosphate as an electrolyte can be obtained.

Abstract: A predoping material is used for an alkali metal ion electric storage device and is represented by Formula (1): R?SM)n??(I) where M represents lithium or sodium; n represents an integer of 2 to 6; and R represents an aliphatic hydrocarbon, optionally substituted aromatic hydrocarbon, or optionally substituted heterocycle having 1 to 10 carbon atoms).

Abstract: In a lithium on secondary battery, lithium ions are reversibly absorbed to and released from a negative electrode. A positive electrode includes lithium vanadium phosphate. A non-aqueous electrolytic solution includes fluorinated carbonate as a solvent.

Abstract: An electric storage device is provided with a positive electrode having a positive-electrode mixture layer including a positive-electrode active material. The positive-electrode active material includes a lithium-vanadium-phosphate from 8% to 70% by mass and a lithium-nickel complex oxide from 20% to 82% by mass. A coating concentration of the positive-electrode mixture layer is from 4 mg/cm2 to 20 mg/cm2. The lithium-nickel complex oxide includes a nickel element from 0.3 mol to 0.8 mol with respect to a lithium element of 1 mol.

Abstract: An electrode laminate unit of an electric storage device includes positive electrodes, negative electrodes and a lithium electrode connected to the negative electrode. When an electrolyte solution is injected into the electric storage device, lithium ions are emitted from the lithium electrode to the negative electrode. A positive and a negative electrode current collector have through-holes that guide the lithium ions in the laminating direction. The aperture ratio of the through-holes at the edge parts where the electrolyte solution is easy to be permeated is set to be smaller than the aperture ratio at central parts in order to suppress the permeation. Thus, the distribution of the electrolyte solution is made uniform, whereby the doping amount is made uniform.

Abstract: In a current collector laminating step, a current-collector laminate unit 30 composed of current-collector materials 31 and 32 and a film material 33 is formed. Resist layers 34 having a predetermined pattern are formed on both surfaces of the current-collector laminate unit 30. An etching process is performed with the resist layers 34 used as a mask, whereby through-holes 20a and 23a are formed on the respective current-collector materials 31 and 32. The resist layers 34 are removed from the current-collector laminate unit 30. Since the etching process is performed on the plural current-collector materials 31 and 32, productivity of an electrode can be enhanced. During the application of the slurry, the film material 33 prevents the leakage of the electrode slurry. Therefore, the current-collector laminate unit 30 can be conveyed in the horizontal direction, whereby the productivity of the electrode can be enhanced.

Abstract: An electrode material uses, as an active material, sodium vanadium oxide represented by NaxV2O5 (0<x<0.33) and having a crystal phase of a stoichiometric composition of Na0.33V2O5 or Na1.0V6O15. As a result, together with improving battery capacity by employing a composition in which Na is made to be deficient, satisfactory cycle characteristics can be maintained due to the presence of sodium. In addition, since an electrode material production method uses NaOH and NH4VO3 as raw materials, the electrode material of the present invention can be efficiently produced with heat treatment at a comparatively low temperature.

Abstract: The electrode material according to the present invention has a crystal phase in the form of a lattice containing lithium vanadium oxide, such as Li0.3V2O5 with a primary particle diameter of 10 nm or more and 200 nm or less, wherein lithium is arranged in the lattice. Accordingly, when the electrode material is used as the positive electrode material, especially in the crystallized state containing an amorphous glass composition such as phosphor, lithium, antimony (or iron), a high battery capacity can be obtained. Further, even if the charging and discharging are repeated, the crystal structure is difficult to be collapsed, whereby the cycle characteristic is enhanced.