Method for forming an electrical connection to a conductive fibre electrode and electrode so formed
AssigneeArcactive Limited
InventorsJohn Abrahamson, Suzanne Furkert, Shane Christie, Yoon San Wong
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Abstract
A method for forming an electrical connection to a microscale electrically conductive fiber material electrode element, such as a carbon fiber electrode element of a Pb-acid battery, comprises pressure impregnating into the fiber material an electrically conductive lug material, such as molten Pb metal, to surround and/or penetrate fibers and form an electrical connection to the fiber material and provide a lug for external connection of the electrode element. Other methods of forming a lug for external connection are also disclosed.
Claims8
A lead acid battery or cell including at least one electrode comprising as a current collector a conductive fibre material having an average interfibre spacing of less than 100 microns, comprising an electrically conductive lug material pressure impregnated into a lug zone part of the fibre material surrounding and/or penetrating the fibres and forming an electrical connection to the fibre material in said lug zone and providing a lug for external connection of the electrode element, and comprising an active material in at least a part of the conductive fibre material other than in said lug zone, and wherein a surface to volume ratio of Pb particles in the active material is at least about 3 times greater than a surface to volume ratio of lug material in the lug zone.
Dependencies are inferred from the claim text.