NEGATIVE ELECTRODE FOR NICKEL HYDROGEN SECONDARY BATTERY, AND NICKEL HYDROGEN SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE

The nickel hydrogen secondary battery (2) has an electrode group (22) including a separator (28), a positive electrode (24) and a negative electrode (26), wherein the negative electrode (26) has a negative electrode core, and a negative electrode mixture held on the negative electrode core, wherein...

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Bibliographische Detailangaben
Hauptverfasser:	Ishida, Jun, Ohata, Shota, Saguchi, Akira
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS 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:	The nickel hydrogen secondary battery (2) has an electrode group (22) including a separator (28), a positive electrode (24) and a negative electrode (26), wherein the negative electrode (26) has a negative electrode core, and a negative electrode mixture held on the negative electrode core, wherein the negative electrode mixture contains a hydrogen absorbing alloy and a water repellent, wherein the hydrogen absorbing alloy has a composition represented by the general formula: Ln 1-x Mg x Ni y-a-b Al a M b (wherein Ln represents at least one element selected from rare earth elements, Ti and Zr; M represents at least one element selected from V, Nb, Ta, and the like; and the subscripts a, b, x and y satisfy relations represented by 0.05 ¤ a ¤ 0.30, 0 ¤ b ¤ 0.50, 0 ¤ x < 0.05 and 2.8 ¤ y ¤ 3.9, respectively), and has a structure of an A 2 B 7 type; and the water repellent comprises a perfluoroalkoxyalkane.