Abstract: A primary alkaline cell has a cathode including a nickel oxyhydroxide and an anode including zinc or zinc alloy particles. Performance of the nickel oxyhydroxide alkaline cell is improved by adding an ionically conductive clay to the cathode.

Abstract: An alkaline cell having an anode comprising zinc and a cathode comprising manganese dioxide wherein the cathode is located annularly along the inside surface of the cell housing and has a plurality of indentations on the inside of its surface facing the cell interior. Each indentation has a wall defining a channel with an opening thereto running preferably in the direction of the cell's length. The channel and opening facing the cell interior filled with anode material. The cell can have an anode current collector, typically of metal, with at least a portion of its surface extending into the cathode indentation channel. The anode current collector can have a portion of its surface extending from a point within the anode and into the cathode indentation channel through said opening. The cell can include a cathode current collector comprising a sheet of conductive material such as a sheet of metal or graphite placed within the cathode, particularly within thick regions of the cathode.

Abstract: An AB.sub.5 -type hydrogen absorbing alloy composition for use in an electrochemical cell includes between about 0.001 and 0.01 mole percent of zirconium and/or titanium dispersed throughout the alloy. Methods of producing the alloy are also disclosed. The levels of these elements have been selected to maintain low hydrogen equilibrium pressure, high capacity, and acceptable activation characteristics, along with improved storage characteristics and improved cycle life from reduced corrosion.

Abstract: The surface of material containing a hydrogen storage alloy are treated with an organometallic compound to provide the alloy with corrosion resistance.