A hydrogen storage alloy electrode for a battery is made of a hydrogen storage alloy powder which includes agglomerates of hydrogen storage alloy particles joined together through a metallic layer. A method of making the electrode includes forming agglomerates of hydrogen storage alloy particles joined together by a metallic layer which covers surface portions of the particles, and then forming the electrode using a resulting powder including the agglomerates.

A braking system for a vehicle includes a manually operable device for supplying hydraulic fluid under pressure. The device is connected by an hydraulic line to brake mechanisms of the vehicle so that operation of the device causes operation of the brake mechanisms. There is provided a vacuum operable servomechanism which is capable of supplying hydraulic fluid under pressure to the brake mechanisms and pressure-sensitive means operable when the pressure generated by the manually operable device...

An alkaline storage battery of the present invention has a negative electrode comprising an AB.sub.5 type hydrogen storage alloy containing at least nickel as B element. The hydrogen storage alloy contains 1.5 to 5.0% by weight of a magnetic substance comprising metallic nickel. The above-mentioned alkaline storage battery can effect high output from the initial stage of charging and discharging cycles.

An alkaline storage battery having a negative electrode made from a hydrogen absorbing alloy represented by the formula Ln.sub.1-xMg.sub.xNi.sub.y-aM.sub.a (where Ln is at least one element selected from rare earth elements, M is at least one element selected from the group consisting of Al, V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Ga, Zn, Sn, In, Cu, Si and P, 0.05.ltoreq.x<0.20, 2.8.ltoreq.y.ltoreq.3.9 and 0.10.ltoreq.a.ltoreq.0.50) and carbon as a conductive agent, a positive electrode of nickel hyd...

An electrode for a sealed nickel/metal hydride battery and a method of manufacturing the same, which is capable of suppressing a decrease in the charging reserve of a hydrogen-storage alloy electrode (negative electrode) and an increase in the internal pressure of the battery, is provided. The hydrogen-storage alloy electrode is formed using a tackifier or a binder which is prepared from an organic polymer material containing the ether linkage (--O--), for example, polyethylene oxide, polypropyl...

A positive electrode for use in alkaline rechargeable electrochemical cells comprising: a material comprising a compositionally and structurally disordered multiphase nickel hydroxide host matrix which includes at least one modifier chosen from the group consisting of F, Li, Na, K, Mg, Ba, La, Se, Nd, Pr, Y, Co, Al, Cr, Mn, Fe, Cu, Zn, Sc, Sn, Sb, Te, Bi, Ru, and Pb. A process for forming a high loading uniformly distributed multiphase substantially nitrate free sintered positive electrode for u...

A negative electrode of a nickel-metal hydride storage battery includes an active material layer formed on a conductive substrate and including a hydrogen storage alloy powder and a carbon powder. The carbon powder includes some carbon particles each containing at least one metal selected from a group consisting of Ni, Co, Ca, Fe, Mg, Mn, Ti, and V. Each of the some carbon particles include a particle containing the above metal inside thereof. In this negative electrode, the carbon powder contai...

A nickel-metal hydride secondary battery includes positive electrodes including nickel hydroxide, negative electrodes including a hydrogen-absorbing alloy, separators and an alkaline electrolyte. The positive electrode includes a compound silicate. By employing the above construction, the compound silicate reacts with Mn or Al which dissolves out from the negative electrode to inhibit deterioration of electrochemical characteristics of the battery, and thus the life of the battery can be prolong...

A hydrogen absorbing alloy electrode is prepared by adding a binder to a hydrogen absorbing alloy powder and forming the mixture to a shape of an electrode, and the binder is partly or entirely made of poly N-vinyl acetamide, whereby higher high-rate discharge characteristics are obtained than conventionally.

In a hydrogen absorbing alloy electrode containing hydrogen absorbing alloy powder and a binding agent, employed as the binding agent is a copolymer of aromatic vinyl and at least one of acrylic ester and methacrylic acid ester, in which the total content of acrylic ester units and methacrylic acid ester units is in the range of 43 to 90% by weight of the whole copolymer, and the hydrogen absorbing alloy electrode is used as a negative electrode of a nickel-metal hydride battery.