Lead alloy, positive electrode for lead storage batteries, lead storage battery, and power storage system

Provided is a lead alloy that makes it possible to produce a positive electrode for lead storage batteries in which corrosion that passes through a positive electrode lead layer in the thickness direction is unlikely to occur. The lead alloy contains 0.4-2 mass% of tin and not more than 0.004 mass%...

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Bibliographische Detailangaben
Hauptverfasser:	TANAKA Akira, FURUKAWA Jun, OGIWARA Yoshiaki, YAMAUCHI Miho, NAKAMURA Hideto, KANEKO Hiroshi, KOIDE Ayano, MANGAHARA Toru, YAMADA Keizo, ARAGAKI Masanobu, SATO Atsushi
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Provided is a lead alloy that makes it possible to produce a positive electrode for lead storage batteries in which corrosion that passes through a positive electrode lead layer in the thickness direction is unlikely to occur. The lead alloy contains 0.4-2 mass% of tin and not more than 0.004 mass% of bismuth, with the remainder being lead and unavoidable impurities. In image analysis of a crystal orientation distribution map produced by analyzing the surface of the lead alloy by electron backscatter diffraction, if intersections of a straight line extending in a specific direction and misorientation boundaries between crystal grains having crystal misorientation of not less than 5° are extracted, and then the distances between adjacent pairs of the extracted intersections are measured, the average value of said distances is not more than 50 μm.