Abstract: An electrode structure of a flow battery, a flow battery stack, and a sealing structure of the flow battery stack, wherein the density of the vertical tow in the electrode fiber is larger than the density of the parallel tow. In the electrode fiber per unit volume, the quantity ratio of the vertical tow to the parallel tow is at least 6:4. The electrode structure is composed of an odd number of layers of the electrode fibers, and the porosity of other layers is larger than the porosity of the center layer.

Abstract: A battery is provided. The battery includes a battery element; a film-like outer package member configured to accommodate the battery element; and a carbon fiber sheet provided between the battery element and the film-like outer package member, and the carbon fiber sheet includes long fibers.

Abstract: A positive electrode active material which can improve cycle characteristics of a secondary battery is provided. Two kinds of regions are provided in a superficial portion of a positive electrode active material such as lithium cobaltate which has a layered rock-salt crystal structure. The inner region is a non-stoichiometric compound containing a transition metal such as titanium, and the outer region is a compound of representative elements such as magnesium oxide. The two kinds of regions each have a rock-salt crystal structure. The inner layered rock-salt crystal structure and the two kinds of regions in the superficial portion are topotaxy; thus, a change of the crystal structure of the positive electrode active material generated by charging and discharging can be effectively suppressed.

Abstract: One aspect of the invention provides a negative electrode material for use in an electrolyte battery including a negative electrode active material and a coating material disposed on a surface of the negative electrode active material. The coating material is a fluoride ion conductor that includes the elements lead and fluorine.

Abstract: A redox flow battery includes: first carbon nanotubes having an average diameter of 100 nm or r core, and second carbon nanotubes having an average diameter of 30 nm or less, in which the second carbon nanotubes are adhered to surfaces of the first carbon nanotubes such that the second carbon nanotubes bridge between the plural first carbon nanotubes. Since the redox flow battery includes an electrode material and an electrode including the electrode material, the electromotive force and the charging capacity are high.

Abstract: The present invention relates to a positive electrode active material pre-dispersion composition which includes a lithium iron phosphate-based positive electrode active material, a dispersant, and a solvent, wherein the dispersant includes a hydrogenated nitrile butadiene rubber (HNBR), a slurry composition for a secondary battery positive electrode which is prepared by using the positive electrode active material pre-dispersion composition, a positive electrode for a secondary battery, and a lithium secondary battery including the positive electrode.

Abstract: An electrolyte includes: a lithium salt; a non-aqueous solvent; and a disulfonate compound represented by Formula 1: wherein, in Formula 1, R1 and R2 are each independently a fluorine, a cyano group, a nitro group, or a methyl group substituted with at least one fluorine, R11 to R14 are each independently a hydrogen, a deuterium, a fluorine, a hydroxyl group, a cyano group, a nitro group, a substituted or unsubstituted C1-C10 alkyl group, a substituted or unsubstituted C2-C10 alkenyl group, or a substituted or unsubstituted C2-C10 alkynyl group, a1 and a2 are each independently an integer of 1 to 5, a11 and a12 are each independently an integer of 0 to 4, and a sum of a1 and a11 is 5, and a sum of a2 and a12 is 5.

Abstract: The present disclosure relates to an invention directed to a composite separator having a porous coating layer, where the porous coating layer is prepared from a slurry by adjusting a particle diameter of an inorganic matter that is an ingredient of the slurry, so that a sinking rate of the inorganic particles may remarkably slow down and dispersibility may be dramatically improved, and as a result, the content of the inorganic particles may relatively increase and the inorganic particles may be uniformly distributed in the coating layer on a substrate, thereby preventing a reduction in battery performance.

Abstract: [Problem] Provided is a silicon oxide-based negative electrode material capable of avoiding, as much as possible, decreased battery performance resulting from a heterogeneous distribution of a Li concentration. [Solution] Provided is a powder having an average composition of SiLixOy wherein 0.05<x<y<1.2 and a mean particle size of 1 ?m or more. Further, 10 particles randomly selected from particles of the powder each satisfy 0.8<L1/L2<1.2 with the standard deviation of L2 being 0.1 or less, L1 being a Li concentration at a depth of 50 nm from an outermost surface of each of the 10 particles, and L2 being a Li concentration at a depth of 400 nm from the outermost surface.

Abstract: An electrochemical reaction unit cell including an electrolyte layer containing a solid oxide; a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween; and an intermediate layer disposed between the electrolyte layer and the cathode and containing a first cerium oxide. In the electrochemical reaction unit cell, the cathode includes an active layer containing a strontium-containing perovskite oxide, a second cerium oxide, sulfur, and strontium sulfate and having ion conductivity and electron conductivity, and a grain of the strontium sulfate covers at least a portion of the surface of a grain of the second cerium oxide.

Abstract: The disclosed embodiments relate to a battery cell which includes a first electrode sheet having a first area and a second electrode sheet having a second area. The second area may be less than the first area. The battery cell also includes a first conductive tab coupled to the first electrode sheet and a second conductive tab coupled to the second electrode sheet. An insulator is disposed between the second conductive tab and the first electrode sheet, the insulator configured to prevent electrical current from flowing between the first electrode sheet and the second conductive tab. The battery cell also includes a pouch that encloses the first and second electrode sheets and a first and second battery terminal extending through the pouch. The first battery terminal may be coupled to the first conductive tab, and the second battery terminal may be coupled to the second conductive tab.

Abstract: A battery is provided which includes a first power generating element, a second power generating element, and a first adhesion layer adhering the first power generating element to the second power generating element. A first positive electrode collector of the first power generating element and a second negative electrode collector of the second power generating element face each other with (i.e., via) the first adhesion layer. Between the first positive electrode collector and the second negative electrode collector, the first adhesion layer is disposed in a region forming a first positive electrode active material layer or a region forming a second negative electrode active material layer, whichever is smaller. The first positive electrode collector and the second negative electrode collector are not in contact with each other in a region in which the first positive electrode active material layer and the second negative electrode active material layer face each other.

Abstract: A battery includes a first power generating element including a first electrode layer and a first counter electrode layer, a first current collector that is in contact with the first electrode layer, a second current collector that is in contact with the first counter electrode layer, a first sealing portion that seals a gap between the first current collector and the second current collector, a first void disposed between the first sealing portion and the first power generating element, and a first gas detection unit that detects gas. The first gas detection unit detects “the gas in the first void.

Abstract: Battery housing structures and battery apparatuses including the same are provided. A battery housing structure may include a case including an accommodation region in which a battery unit is accommodated, and an elastic member assembly provided in the case and configured to apply a pressure to the battery unit accommodated in the accommodation region. The elastic member assembly may include at least one first elastic member having an elastic coefficient that increases when a displacement increases and at least one second elastic member having an elastic coefficient that decreases when a displacement increases. The at least one first elastic member and the at least one second elastic member may have different structures or may be arranged in different directions.

Abstract: The electrochemical cell has an anode, a cathode, and a solid electrolyte layer disposed between the anode and the cathode. The cathode contains a main phase which is configured by a perovskite oxide expressed by the general formula ABO3 and including at least one of La or Sr at the A site, and a second phase which is configured by Co3O4 and (Co, Fe)3O4. An occupied surface area ratio of the second phase in a cross section of the cathode is less than or equal to 10.5%.

Abstract: A negative electrode includes a negative electrode current collector and a negative electrode active material layer that is provided on the negative electrode current collector and includes a negative electrode active material. The negative electrode active material includes a carbon material, and a surface of the negative electrode active material layer has a reflectance Ra in a range of 7.0?Ra?14.8% at a wavelength of 550 nm. A lithium ion secondary battery includes the negative electrode, a positive electrode, a separator, and a nonaqueous electrolyte solution. The nonaqueous electrolyte solution includes a nonaqueous solvent and an electrolyte, the nonaqueous solvent contains ethylene carbonate, and the ethylene carbonate is contained in a range of 10 to 30 vol. % in the entire nonaqueous solvent.

Abstract: A fuel cell stack is provided and includes a fuel cell assembly in which a plurality of fuel cells are stacked between upper and lower current collectors. The fuel cell stack includes an enclosure that pressurizes and seals the fuel cell assembly in a stacked direction of the fuel cells.

Abstract: The fuel cell of the present disclosure includes: a unit cell including: a fuel electrode, an air electrode and electrolyte disposed between the fuel electrode and the air electrodes; a separator for separating a fuel gas flowing though the fuel electrode and air flowing through the air electrode; and a sealing constituted of a glass composition for bonding the separator and the electrolyte, and at least a surface region of the sealing portion exposed to the fuel gas and the air does not contain Ba.

Abstract: A power storage module includes: a plurality of power storage elements; a plurality of cooling members each of which has a coolant and a sealing body hermetically sealing the coolant, is stacked on the power storage element, and is configured to form a bulging portion by deformation of the sealing body caused by evaporation of the coolant at an extension portion extending in a region not overlapping the power storage element; and a heat transfer member that has a spacer portion disposed between the adjacent extension portions of the plurality of cooling members and configured to abut with the bulging portion.

Abstract: A main object of the present disclosure is to provide an electrode current collector in which the peel-off of a coating layer and an aluminum oxide layer is inhibited. The present disclosure achieves the object by providing an electrode current collector to be used in an all solid state battery, the electrode current collector comprising: a current collecting layer, an aluminum oxide layer, and a coating layer containing a conductive material, a resin, and an inorganic filler, in this order; and an Al—F bond is present in the aluminum oxide layer.