(FR2705834-A1)      In joining a metallic connection to an electrode having a fibrous or foam type core, for an electrochemical power cell, a metallic sheet is applied onto an edge of the core and pressure welded.    The novelty is that, prior to welding, a holding core (27) of similar nature to that of the main core (22) is placed at least at the right-hand side of the welding zone between the sheet (24) and the main core (22). Pref. the main and holding cores consist of nickel foam, nickel-plated steel foam, or nickel- or silver-coated polyurethane felt.    Also claimed is an electrode obtained by the above process.    Welding is carried out by spot welding, 'electric welding' (roller seam welding is disclosed) or ultrasonic welding, and may be carried out before or after introduction of the active material, pref. selected from nickel hydroxide, hydridable alloys, carbon, cadmium oxide, zinc oxide, zinc hydroxide and silver oxide. The sheet (24) pref. consists of nickel-plated steel and may be sandwiched between the main and holding cores (22,27), or may be placed at each side of the main and holding core assembly.    USE -   Esp. for storage batteries for industrial and vehicle applications.    ADVANTAGE -   The electrode has improved electrical and mechanical properties.    (JP7073865-A)      In a process for joining a metallic connection to an electrode having a fibrous or foam type core, for an electrochemical power cell, a metallic sheet is applied onto an edge of the core and pressure welded. The novelty is that, prior to welding, a holding core (27) of similar nature to that of the main core (22) is placed at least at the right-hand side of the welding zone between the sheet (24) and the main core (22). Pref. the main and holding cores consist of nickel foam, nickel-plated steel foam, or nickel- or silver-coated polyurethane felt.    Also claimed is an electrode obtained by the above process.    Welding is carried out by spot welding, 'electric welding' (roller seam welding is disclosed) or ultrasonic welding, and may be carried out before or after introduction of the active material, pref. selected from nickel hydroxide, hydridable alloys, carbon, cadmium oxide, zinc oxide, zinc hydroxide and silver oxide. The sheet (24) pref. consists of nickel-plated steel and may be sandwiched between the main and holding cores (22,27), or may be placed at each side of the main and holding core assembly.    USE -   Esp. for storage batteries for industrial and vehicle applications.    ADVANTAGE -   The electrode has improved electrical and mechanical properties.    (EP626733-B1)      In a process for joining a metallic connection to an electrode having a fibrous or foam type core, for an electrochemical power cell, a metallic sheet is applied onto an edge of the core and pressure welded. The novelty is that, prior to welding, a holding core (27) of similar nature to that of the main core (22) is placed at least at the right-hand side of the welding zone between the sheet (24) and the main core (22). Pref. the main and holding cores consist of nickel foam, nickel-plated steel foam, or nickel- or silver-coated polyurethane felt.    Also claimed is an electrode obtained by the above process.    Welding is carried out by spot welding, 'electric welding' (roller seam welding is disclosed) or ultrasonic welding, and may be carried out before or after introduction of the active material, pref. selected from nickel hydroxide, hydridable alloys, carbon, cadmium oxide, zinc oxide, zinc hydroxide and silver oxide. The sheet (24) pref. consists of nickel-plated steel and may be sandwiched between the main and holding cores (22,27), or may be placed at each side of the main and holding core assembly.    USE -   Esp. for storage batteries for industrial and vehicle applications.    ADVANTAGE -   The electrode has improved electrical and mechanical properties.