A rechargeable battery using a solution of an aluminum salt as an electrolyte is disclosed, as well as methods of making the battery and methods of using the battery.

The present invention provides a method for preparing an electrode for a secondary battery, including the steps of: (i) mixing and kneading an active material, a binder, and a conductive material together with a solvent to prepare a slurry in the form of a paste having a solid content of 70 to 90 wt %; (ii) positioning the slurry in the form of a paste on a current collector; and (iii) passing the current collector through a rolling apparatus together with the slurry in the form of a paste to simultaneously press it while forming an electrode coating layer on the current collector.

The present invention provides a method for preparing an electrode for a secondary battery, including the steps of: (i) mixing and kneading an active material, a binder, and a conductive material together with a solvent to prepare a slurry in the form of a paste having a solid content of 70 to 90 wt %; (ii) positioning the slurry in the form of a paste on a current collector; and (iii) passing the current collector through a rolling apparatus together with the slurry in the form of a paste to simultaneously press it while forming an electrode coating layer on the current collector.

An all solid battery includes: a solid electrolyte layer including phosphoric acid salt-based solid electrolyte; a first electrode that is formed on a first main face of the solid electrolyte layer; and a second electrode that is formed on a second main face of the solid electrolyte layer, wherein a D50% grain diameter of crystal grains of the phosphoric acid salt-based solid electrolyte is 0.5 μm or less, wherein a D90% grain diameter of the crystal grains is 3 μm or less.

An electricity storage device includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and an electrolyte that includes an organic crystal layer including a layered structure and an organic solvent introduced into the organic crystal layer and that is interposed between the positive electrode and the negative electrode to conduct alkali metal ions. The layered structure includes an organic backbone layer containing an aromatic dicarboxylic acid anion having an aromatic ring structure, and an alkali metal element layer containing an alkali metal element that is coordinated with oxygen contained in a carboxylic acid of the organic backbone layer to form a framework. At least one of the positive electrode and the negative electrode adsorbs and desorbs the ions to store and release electric charge.

A nonaqueous electrolyte solution according to one embodiment of the present disclosure contains a lithium salt and a nonaqueous solvent; the nonaqueous solvent contains fluoroethylene carbonate and a chain carboxylic acid ester having a dielectric constant of 6.0 or more; the lithium salt contains LiPO.sub.2F.sub.2 and LiSO.sub.3F; and the respective concentrations of LiPO.sub.2F.sub.2 and LiSO.sub.3F in the non-aqueous solvent are 0.15 mol/L or more.

A lithium secondary battery according to the present disclosure comprises a cathode, an anode; and a non-aqueous electrolyte having lithium ion conductivity. A lithium metal is precipitated on a surface of the anode during charge of the lithium secondary battery. The lithium metal is dissolved from the surface of the anode in the non-aqueous electrolyte during discharge of the lithium secondary battery. The non-aqueous electrolyte contains a solvent and a lithium salt. The lithium salt includes a first lithium salt and a second lithium salt. The second lithium salt is different from the first lithium salt. The first lithium salt is composed of a lithium ion and an ate complex anion. A sum of concentration of the first lithium salt and the second lithium salt which are contained in the non-aqueous electrolyte is not less than 3.0 mol/L.

A battery module includes a battery cell stack having a plurality of stacked battery cells and a plurality of bus bars respectively disposed adjacent to electrode leads respectively provided at the plurality of battery cells. The electrode leads respectively provided at the plurality of battery cells are electrically connected to the plurality of bus bars, respectively.

The present application discloses a battery to reduce a height of an edgefold protrusion in a direction perpendicular to a top seal, reduce structural interference between the edgefold protrusion and other components and parts, and improve a structural compactness when a user utilizes the battery. The battery includes a cell, a packaging bag, and an electrode tab. The packaging bag includes a first packaging portion configured to accommodate the cell and a second packaging portion configured to seal the cell. The second packaging portion includes a top seal configured to seal the electrode tab and two side seals intersecting the top seal. A notched structure is formed at an intersection of the top seal and the side seal. The side seal is folded over along an edge of the side seal adjacent to the first packaging portion and fixed to an outer side surface of the first packaging portion.

An accumulator module (10) having a housing (12) and at least one carrier (18) that is placed in the interior of the housing (12) and is fitted with a plurality of accumulator cells (14). Each accumulator cell (14) has two poles, an end-face contact (28) at a top of the accumulator cell (14) and a lateral surface (30) on a lateral side of the accumulator. A cell connector (16) is provided to conductively connect accumulator cells (14) of adjacent groups of accumulator cells (14). The cell connector (16) has an elongated body that conductively contacts the end-face contacts (28) of a plurality of accumulator cells (14) in one group to the lateral surfaces (30) of a plurality of other accumulator cells (14) in another group. The cell connector (16) comprises contact tongues (46) for contacting the end-face contacts (28) and contact lugs (48) for contacting the lateral surfaces (30).