| 摘要 |
The present method provides an improved electrode for electrolytic cells which comprises, in combination, a porous metal grid, at least one solid strip of zinc metal disposed on said grid along an edge thereof, and a zinc oxide-containing shape-retaining particulate mixture covering at least one side of said grid and overlying said strip. The mixture includes a binder. A portion of the mixture overlying the grid has a density, for example, in excess of 2.5 grams per cc., which is higher than that of the remainder of the mixture. Preferably, a pair of solid zinc metal strips are disposed along the opposite edges of the grid and the mixture overlies both of the strips. Most preferably, the strips are wrapped around the edges and overlie opposite grid sides adjacent the edges. The strips may be about 2 - 15 mil thick each and have the advantage of preventing cell short circuiting, because of separator perforation, by the grid. They also obviate overcharging of the electrode and prevent electrode shape loss during use of the electrode. Such shape loss causes changes in electrical characteristics of the electrode. |
