摘要:
A separator (3) of a molten salt battery is impregnated with a molten salt that serves as the electrolyte. The molten salt contains, as cations, at least one kind of ions selected from among quaternary ammonium ions, imidazolium ions, imidazolinium ions, pyridinium ions, pyrrolidinium ions, piperidinium ions, morpholinium ions, phosphonium ions, piperazinium ions and sulfonium ions in addition to sodium ions. These cations do not have adverse effects on a positive electrode (1). In addition, the melting point of the molten salt, which contains sodium ions and the above-mentioned cations, is significantly lower than the operating temperature of sodium-sulfur batteries, said operating temperature being 280-360 DEG C. Consequently, the molten salt battery is capable of operating at lower temperatures than sodium-sulfur batteries.
摘要:
A porous metal body includes a porous skeleton that forms a three-dimensional network structure and includes an aluminum layer having a thickness of 1 to 100 μm, and tin layers disposed on an internal surface and an external surface of the aluminum layer. Such a porous metal body can be produced by an internal-tin-layer formation step of forming a tin layer on a surface of a resin molded body having a three-dimensional network structure; an aluminum-skeleton formation step of forming an aluminum layer serving as an aluminum skeleton on a surface of the internal tin layer; an external-tin-layer formation step of forming a tin layer on a surface of the aluminum skeleton; and a resin removal step of removing the resin molded body, the resin removal step being performed after the aluminum-skeleton formation step or after the external-tin-layer formation step.
摘要:
KN(SO2F)2 is synthesized by adding HN(SO2Cl)2 dropwise to KF to form an intermediate product, and then allowing the intermediate product and KF to react with each other in an aqueous solvent.
摘要:
A molten-salt battery is provided with rectangular plate-like negative electrodes (21) and rectangular plate-like positive electrodes (41) each housed in a bag-shaped separator (31). The negative electrodes (21) and positive electrodes (41) are arranged laterally and alternately in a standing manner. A lower end of a rectangular tab (22) for collecting current is joined to an upper end of each negative electrode (21) close to a side wall (1A) of a container body (1). The upper ends of the tabs (22) are joined to the lower surface of a rectangular plate-like tab lead (23). A lower end of a rectangular tab (42) for collecting current is joined to an upper end of each positive electrode (41) close to a side wall (1B) of the container body (1). The upper ends of the tabs (42) are joined to the lower surface of a rectangular plate-like tab lead (43).
摘要:
Provided is a molten salt battery whose cycle life is improved by using an electrolyte that is unlikely to cause corrosion of aluminum. In the molten salt battery of the present invention, the total concentration of iron ions and nickel ions contained as impurities in the electrolyte composed of a molten salt is set to be 0.1% by weight or less, preferably 0.01% by weight or less. Because of the low total concentration of iron ions and nickel ions contained in the electrolyte, corrosion of the electrode current collector composed of aluminum is inhibited, and the cycle life of the molten salt battery is improved.
摘要:
A main object is to produce a porous metal body that can be used as a battery electrode, in particular, that can be used as a negative electrode of a molten-salt battery using sodium. The porous metal body includes a hollow metal skeleton composed of a metal layer containing nickel or copper as a main component, and an aluminum covering layer that covers at least an outer surface of the metal skeleton. The porous metal body further includes a tin covering layer that covers the aluminum covering layer, and is used as a battery electrode. Preferably, the porous metal body has continuous pores due to a three-dimensional network structure thereof, and has a porosity of 90% or more.
摘要:
A molten-salt battery is provided with rectangular plate-like negative electrodes (21) and rectangular plate-like positive electrodes (41) each housed in a bag-shaped separator (31). The negative electrodes (21) and positive electrodes (41) are arranged laterally and alternately in a standing manner. A lower end of a rectangular tab (22) for collecting current is joined to an upper end of each negative electrode (21) close to a side wall (1A) of a container body (1). The upper ends of the tabs (22) are joined to the lower surface of a rectangular plate-like tab lead (23). A lower end of a rectangular tab (42) for collecting current is joined to an upper end of each positive electrode (41) close to a side wall (1B) of the container body (1). The upper ends of the tabs (42) are joined to the lower surface of a rectangular plate-like tab lead (43).
摘要:
A plurality of rectangular plate-like negative electrodes and a plurality of rectangular plate-like positive electrodes are laterally stacked so as to face each other alternately with rectangular plate-like separators being respectively interposed therebetween, and are housed in a battery container formed of an aluminum alloy. The inner surface of the battery container is insulated by forming an alumite coating film thereon. Rectangular tabs (lead wires) for drawing a current from the positive electrodes are connected to one another via a tab lead, and rectangular tabs for drawing a current from the negative electrodes are connected to one another via a tab lead.
摘要:
To provide a molten salt battery which is highly safe and has long charge/discharge cycle life. The molten salt battery of the present invention includes a negative electrode 1 in which a negative electrode active material 12 is predominantly composed of carbon such as hard carbon. The negative electrode active material 12 is surface-treated for imparting hydrophilicity to the negative electrode active material 12 to improve the affinity for the molten salt. Further, a transition metal such as iron is added to the negative electrode active material 12 predominantly composed of hard carbon in order to enhance the affinity for the active material. The molten salt battery has higher safety in production and use and longer charge/discharge cycle life than conventional molten salt batteries using metallic sodium as an electrode.
摘要:
A negative electrode precursor material is provided for preparing a negative electrode, which has a reduced thickness, good current collecting performance, and suppresses deformation and generation of dendrites during operation. A molten salt battery comprises a positive electrode formed by providing an active material film on an Al current collector, a separator comprising a glass cloth impregnated with a molten salt as an electrolyte, and the negative electrode formed by providing a Zn film and an active material film on an Al, current collector, which are respectively contained in a substantially rectangular parallelepiped Al case. The active material absorbs and releases Na ions contained in the molten salt.