Elektrodeplatte mit schaumförmigem Träger für elektrochemische Generatoren und Verfahren zur ihrer Herstellung

摘要

The electrode plate (12) includes an active part (E) pasted with active material and a plate head (2, 3, 11) including a connection stem (3). The plate head is constituted by the actual metal foam of the plate support, and its density, per unit surface area of metal foam, is at least 2.5 times that of the metal foam of the rest of the electrode plate, the higher density of the plate head resulting from an operation of compressing the foam of the support, the stem (3) of the plate head emerging from the middle of the thickness (e2) of the plate and resulting from compression of the support in two directions: a first compression in its height direction and a second compression in its thickness direction. Such an electrode plate is manufactured from a metal foam plate whose upper edge is compressed so as to form the plate head. The compression takes place in the height direction and subsequently in the thickness direction at the stem (3) and at least in the height direction over the rest of the length of the electrode.