Ozone generating electrolysis cell and method of fabricating the same

Abstract

An electrolysis cell (,) includes an anodic plate (,), a cathodic plate (,) and a PEM (,) sandwiched between these plates (,). The cell also includes a layer (,) containing a catalyst for generation of ozone. The layer (,) contains lead dioxide and PTFE and is interposed between the anodic plate (,) and the PEM (,). At least some portion of the anodic plate surface contacting the layer (,) is coated with platinum (,). The electrode plates (,) are not only electrically conductive but also in some portions are permeable to gas and liquid. A PTFE dispersion, lead dioxide powder and volatile dispersion medium are mixed are kneaded. The PTFE concentration relative to lead dioxide in the mixture is 5% by weight. The kneaded mixture (,) is spread to be a half-dried sheet (,) on paraffin paper plate (,). The half-dried sheet (,) is left standing or heated in an atmosphere at or below 100° C. to volatilize the dispersion medium and become dry. The paper (,) coated with the dry film (,) is cut in a predetermined shape. Then the cut dry film (,) is peeled off the cut paper (,). The peeled-off dry film (,) is used as the layer (,). To make a half-dried film, the kneaded mixture (,) may be spread onto the anodic plate or the PEM, wherein the step of peeling off is omitted. Such a half dried film is also left standing or heated to volatilize the dispersion medium at or below 100° C.