Abstract: A lithium ion battery module includes a first metal sheet, a power storage element, and a second metal sheet in this order, in which the power storage element includes a lithium ion cell in which a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode current collector are laminated in this order, the positive electrode current collector and the negative electrode current collector are provided as outermost layers, and an electrolytic solution is enclosed by sealing outer peripheries of the positive electrode active material layer and the negative electrode active material layer, a conductive elastic member is arranged between the positive electrode current collector of the outermost layer of the power storage element and the first metal sheet, and/or between the negative electrode current collector of the outermost layer of the power storage element and the second metal sheet, and the first metal she

Abstract: A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions. The predoping method for a negative electrode active material includes: a predoping process and a post-doping modification process. In the predoping process, the negative electrode active material is doped with lithium ions, to thereby reduce a potential of the negative electrode active material relative to lithium metal. In the post-doping modification process, after the predoping process, reaction is caused between a reactive compound that is reactive with lithium ions and lithium ions doped into the negative electrode active material, to thereby increase the potential of the negative electrode active material relative to lithium metal. The potential of the negative electrode active material relative to lithium metal is 0.8 V or more at completion of the post-doping modification process.

Abstract: A non-aqueous electrolyte secondary battery has a power generating element that includes a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a surface of a positive electrode current collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a surface of a negative electrode current collector, and a separator impregnated with an electrolyte solution. The negative electrode active material includes a Si material that contains silicon and is capable of insertion and removal of lithium ions. The electrolyte solution contains lithium bis(fluorosulfonyl)imide (LiFSI) and an inorganic lithium salt other than the LiFSI, and has a feature that a ratio of a concentration (mol/L) of the LiFSI with respect to a concentration (mol/L) of the inorganic lithium salt (LiFSI/inorganic lithium salt) in the electrolyte solution is 1 or less.

Abstract: A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions using an electrolyte solution that includes lithium ions. The electrolyte solution includes at least one type of additive having a reduction potential higher than a reduction potential of a solvent contained in the electrolyte solution.

Abstract: A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions. The predoping method for a negative electrode active material includes: a predoping process and a post-doping modification process. In the predoping process, the negative electrode active material is doped with lithium ions, to thereby reduce a potential of the negative electrode active material relative to lithium metal. In the post-doping modification process, after the predoping process, reaction is caused between a reactive compound that is reactive with lithium ions and lithium ions doped into the negative electrode active material, to thereby increase the potential of the negative electrode active material relative to lithium metal. The potential of the negative electrode active material relative to lithium metal is 0.8 V or more at completion of the post-doping modification process.

Abstract: There is provided a means capable of suppressing generation of a lithium dendrite at the time of charging and discharging while sufficiently suppressing an amount of gas generated at the time of initial charging of an electric device. When a lithium ion is doped in advance to a negative electrode active material, which is used in an electric device including a positive electrode and a negative electrode, after performing a pre-doping step of doping the lithium ion to a negative electrode active material to be doped to reduce a potential (vs. Li+/Li) of the negative electrode active material to be doped with respect to a lithium metal, a dedoping step of dedoping the lithium ion from the negative electrode active material doped with the lithium ion in the pre-doping step to increase a potential (vs. Li+/Li) of the negative electrode active material with respect to the lithium metal is performed.

Abstract: To provide a negative electrode for a lithium ion battery in which a volume change of a silicon-based negative electrode active material due to charging and discharging is small, and a production method therefor. Provided is a method for producing a negative electrode for a lithium ion battery, the method including a step of forming a coating film on a current collector or a separator by using a slurry containing a negative electrode active material composition, which contains a silicon-based negative electrode active material and a carbon-based negative electrode active material, and a dispersion medium, in which the method further includes a step of doping the silicon-based negative electrode active material with lithium ions and a step of doping the carbon-based negative electrode active material with lithium ions before or after the step of forming the coating film and before assembling a lithium ion battery, and the method does not substantially include a step of drying the coating film.

Abstract: To provide a negative electrode for a lithium ion battery in which a volume change of a silicon-based negative electrode active material due to charging and discharging is small, and a production method therefor. Provided is a method for producing a negative electrode for a lithium ion battery, the method including a step of forming a coating film on a current collector or a separator by using a slurry containing a negative electrode active material composition, which contains a silicon-based negative electrode active material and a carbon-based negative electrode active material, and a dispersion medium, in which the method further includes a step of doping the silicon-based negative electrode active material with lithium ions and a step of doping the carbon-based negative electrode active material with lithium ions before or after the step of forming the coating film and before assembling a lithium ion battery, and the method does not substantially include a step of drying the coating film.

Abstract: A frame molding configured to be assembled on a corner portion of a window opening formed at an intersecting portion between a door panel and a door frame of a door for a vehicle, the frame molding includes a body member including a first molding portion formed to be extended along a first portion provided at the corner portion and a second molding portion formed to be extended along a second portion provided at the corner portion, the first portion being positioned in a vicinity of the door panel and the second portion being positioned in a vicinity of the door frame, and a support member formed along the first portion and configured to be fixed to the door panel, the support member on which the first molding portion is assembled and which includes a positioning portion determining a position of the body member relative to the door panel.

Abstract: A frame molding configured to be assembled on a corner portion of a window opening formed at an intersecting portion between a door panel and a door frame of a door for a vehicle, the frame molding includes a body member including a first molding portion formed to be extended along a first portion provided at the corner portion and a second molding portion formed to be extended along a second portion provided at the corner portion, the first portion being positioned in a vicinity of the door panel and the second portion being positioned in a vicinity of the door frame, and a support member formed along the first portion and configured to be fixed to the door panel, the support member on which the first molding portion is assembled and which includes a positioning portion determining a position of the body member relative to the door panel.