摘要:
A porous metallic body has a three-dimensional network structure composed of an alloy containing at least Ni and Cr, the porous metallic body having a skeleton formed of a hollow core and a shell, in which when a cross section of the shell is evenly divided in the thickness direction into three portions, i.e., an outer portion, a central portion, and an inner portion, and when concentrations in percent by weight of Cr in the outer portion, the central portion, and the inner portions are defined as a, b, and c, a, b, and c satisfy the relation given by expression (1): |(a+c)/2−b|/(a+b+c)/3
摘要:
A porous metal member composed of an alloy at least containing nickel and tungsten is provided. The alloy may contain 50 to 80 wt % of nickel and 20 to 50 wt % of tungsten and may further contain 10 wt % or less of phosphorus and/or 10 wt % or less of boron. Such a porous metal member can be produced by, for example, making a porous base such as a urethane foam be electrically conductive, forming an alloy film containing nickel and tungsten, then removing the porous base from the alloy film, and subsequently reducing the alloy.
摘要:
A process for preparing a porous metallic body comprising the steps of: rendering a porous resin body electrically conductive, electroplating the conductive resin, and heating the electroplated resin to remove the resin, wherein the step of rendering the resin electrically conductive is conducted by coating the resin with a coating composition containing amorphous carbon particles as a conductive material. In the process, substantially spherical carbon particles may be used as the conductive material. The substantially spherical carbon particles are still preferably amorphous carbon. The thus obtained porous metallic body has reduced defect and more smooth skeleton in the porous body, is less likely to cause stress concentration upon application of bending and tensile force, has lower carbon content, and superior mechanical strength, and, therefore, the substrate is suitable as an electrode substrate for batteries.
摘要:
A battery electrode substrate having excellent mechanical strength and flexibility and being capable of increasing the filling density of a positive electrode active substance and, thereby, achieving a higher capacity battery, a battery electrode formed from the battery electrode substrate, and an alkaline secondary battery including the battery electrode are provided. The battery electrode substrate includes a woven or unwoven fabric and nickel for coating fibers constituting the woven or unwoven fabric, wherein the weight per area of the above-described woven or unwoven fabric is 15 g/m2 or more, and 60 g/m2 or less and the thickness of the above-described woven or unwoven fabric is 1.3 mm or more, and 3.0 mm or less. The battery electrode is formed from the battery electrode substrate, and the alkaline secondary battery includes the battery electrode.
摘要翻译:一种电池电极基板,其具有优异的机械强度和柔性,并且能够提高正极活性物质的填充密度,从而实现更高容量的电池,由电池电极基板形成的电池电极和碱性二次电池,其包括 提供电池电极。 电池电极基板包括织造或非织造织物和用于涂覆构成织造或非织造织物的纤维的镍,其中上述织造或非织造织物的面积重量为15g / m 2以上60g / m 2, 上述织造或非织造织物的厚度为1.3mm以上,3.0mm以下。 电池电极由电池电极基板形成,碱性二次电池包括电池电极。
摘要:
Provided are a porous metal body that is excellent in terms of corrosion resistance and that is suitable for a collector for batteries such as lithium-ion batteries, capacitors, or fuel cells; and methods for producing the porous metal body. A production method includes a step of coating a porous nickel body with an alloy containing at least nickel and tungsten or a metal containing at least tin; and a subsequent step of a heat treatment. Another production method includes a step of forming a nickel-plated layer on a porous base and then continuously forming an alloy-plated layer containing at least nickel and tungsten or tin, a step of removing the porous base, and a step of reducing metal. Such a method can provide a porous metal body in which tungsten or tin is diffused in a porous nickel body or a nickel-plated layer.
摘要:
A battery electrode substrate includes a metallic porous body. The metallic porous body has a structure in which a surface of a plastic fiber in a woven or unwoven fabric is coated with a nickel film. The nickel film coats the surface with an average coverage ratio of not less than 85%.
摘要:
A battery electrode substrate having excellent mechanical strength and flexibility and being capable of increasing the filling density of a positive electrode active substance and, thereby, achieving a higher capacity battery, a battery electrode formed from the battery electrode substrate, and an alkaline secondary battery including the battery electrode are provided. The battery electrode substrate includes a woven or unwoven fabric and nickel for coating fibers constituting the woven or unwoven fabric, wherein the weight per area of the above-described woven or unwoven fabric is 15 g/m2 or more, and 60 g/m2 or less and the thickness of the above-described woven or unwoven fabric is 1.3 mm or more, and 3.0 mm or less. The battery electrode is formed from the battery electrode substrate, and the alkaline secondary battery includes the battery electrode.
摘要翻译:一种电池电极基板,其具有优异的机械强度和柔性,并且能够提高正极活性物质的填充密度,从而实现更高容量的电池,由电池电极基板形成的电池电极和碱性二次电池,其包括 提供电池电极。 电池电极基板包括织造或非织造织物和用于涂覆构成织造或非织造织物的纤维的镍,其中上述织造或非织造织物的每面积的重量为15g / m 2或 更多,60g / m 2以下,上述织造或无纺布的厚度为1.3mm以上,3.0mm以下。 电池电极由电池电极基板形成,碱性二次电池包括电池电极。
摘要:
A collector that has enough hardness and flexibility and a battery electrode substrate that uses this collector are provided. Also provided is a low-cost battery electrode substrate that exhibits excellent high-rate charge/discharge characteristics and low electrical resistance and that is able to avoid the decline in cycle characteristics caused by repetitive charging/discharging. The invention is a battery electrode substrate having a structure in which a nickel film is coated on the surface of plastic fiber of a woven or unwoven fabric, wherein a metallic porous body in which the average coverage ratio by the nickel film is not less than 85% is used. The invention is also a collector comprising a metallic porous body having a structure in which a surface of plastic fiber of a woven or unwoven fabric is coated with a nickel film so as to be an average coverage ratio of not less than 85%, wherein the metallic porous body comprises at least two layers of a lower density region and a higher density region in the thickness direction between which there is a difference in density of included nickel, and a thickness of the lower density region is not less than 1.5-times a thickness of the higher density region. The invention is also a battery electrode substrate that has a structure in which a surface of a plastic fiber in a unwoven fabric is coated with a nickel film, wherein the battery electrode substrate uses a metallic porous body in which a transverse-to-longitudinal ratio of the electrical resistance is not less than two times. The plastic fiber is preferably a fiber that has a core/sheath composite fiber structure in which the core is polypropylene and the sheath is polyethylene.