Abstract: The invention relates to an anode electrolyte comprising an aqueous solution of a metal bromide and a bromine complexing agent comprised of a tertiary amine for use in an electrolyte circulation type, metal-halogen secondary battery, and further, to an electrolyte circulation type, metal-halogen secondary battery in which a bromine complexing agent comprising a tertiary amine is added to an anode electrode comprised of an aqueous solution of a metal bromide. The anode electrolyte may advantageously further comprise an inorganic acid.

Abstract: The invention relates to an electrolytes circulation type cell stack secondary battery of the construction in which the electrolytes are circulated in a parallel manner. In order to absorb small shunt electrical currents, an electrode is arranged in the vicinity of each of the cathode electrolyte inlet and outlet channels of low-potential-side one of the secondary cells and the electrodes are connected to the cathode terminal of the cell stack secondary battery.

Abstract: A manipulator of the type where a base and a hand are connected via a flexible arm in which the flexible arm comprises a plurality of hollow coupling members which are coupled to each other via universal joints in a manner allowing free flexion and integral rotation. Plural hand-operating shafts are attached to the center of the flexible arm via spherical bearings in a manner to allow relative rotation therebetween and coupled to each other via universal joints at intermediate points of the coupling members, and one of the hand-operating shafts is expandable. Actuators are housed inside the base to drive and rotate the flexible arm and hand-operating shafts, and a separate actuator is housed inside the base to flex the flexible arm.

Abstract: A dendrite inhibitor includes a quaternary ammonium salt and at least two metal ions selected from the group consisting of lead, tin and cadmium ions, and the inhibitor is used by adding it to an electrolyte for subjecting zinc to electrolysis through an electrochemical reaction.

Abstract: An electrode for an electrolyte circulation-type cell stack secondary battery includes a pair of microchannels for supplying and exciting an electrolyte to or from an electrode member, and each of the microchannels is formed a first hindrance portion having a plurality of wall-shaped projections and a second hindrance portion integrally with a stepped portion in the electrode thickness direction and numerous small cylindrical projections arranged on the stepped portion in a staggered manner with respect to the flow direction of the electrolyte thereby making uniform the flow of the electrolyte on the surface of the electrode member, suppressing the formation of dendrites, making the current density uniform and improving the cell energy efficiency.

Abstract: A hydrogen-containing silicic substance comprising a four-coordinate Si lattice surrounded by a shell of SiH.sub.2 and/or SiH.sub.3 is disclosed. The substance contains unbound hydrogen in the Si lattice, making it possible to conveniently store hydrogen.

Abstract: In an electrolyte circulation type metal-bromine secondary battery of the kind in which the negatively active material is a metal selected from the group consisting of cadmium, zinc and lead, the anode electrolyte storage tank comprises an anode electrolyte zone and a complexing agent zone having a cross-sectional area smaller than that of the anode electrolyte zone.

Abstract: The invention relates to an electrolyte circulation type cell stack secondary battery in which the negatively active materials is a metal selected from the group consisting of cadmium, zinc and lead. An electrode is positioned in the vicinity of each of the catholyte inlet and outlet channels of each secondary cell and the electrodes are connected to the cathode of the cell by a connector, thereby maintaining the electrodes at the same potential as the cathode and preventing the occurrence of abnormal electrodeposition.

Abstract: A metal-halogen secondary battery system having electrolyte circulating lines for its positive and negative plate galvanic reaction chambers, further incorporates in the electrolyte circulating lines cleaning lines and a deionized line circulating line including a positive plate galvanic reaction chamber cleaning solution tank, a negative plate galvanic reaction chamber cleaning solution tank, a deionized water tank, a cleaning solution discharge pipe and a plurality of pipes and on-off valves for connecting and opening and closing the tanks and the discharge pipe, thereby making circulation cleaning of the reaction chambers possible and ensuring restoration of the battery characteristics and longer battery life.