| 摘要 |
1,153,875. Persulphate depolarizer layers for water activated cells. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 24 June, 1966 [24 June, 1965], No. 28291/66. Heading H1B. A flexible replaceable depolarizer layer for a primary cell which is activated by introduction of an aqueous liquid into the cell comprises a mixture of carbon and sodium, potassium, or ammonium persulphate dispersed throughout a porous inert carrier. It may be prepared by mixing the carbon/persulphate mixture with a fibrous material, e.g. paper fibres, or a powdered thermoplastic binder, e.g. polyethylene. In Fig. 2, the depolarizer layer (18) is held between a porous absorbent separator, e.g. of paper (17) and a liquid impermeable conductive layer, e.g. of carbon powder in a binder, e.g. polyethylene (19), the layer (19) contacting an inert metal plate, e.g. of Al or Cu, which may be gold-plated, or nickel-plated steel (or the plate may be of carbon) (13), while the layer (17) contacts the negative electrode plate, e.g. of Mg, Zn or Al (12), which is attached to the resilient element (11) which maintains the whole in contact. Fig. 1 shows an electric razor having a plastics casing and a hinged cover (6) to which the element (11) and plate (12) are attached; when this cover is held closed by the catch (10), after the addition of an aqueous electrolyte, e.g. 25 wt. per cent NaCl to layers (17) and (18), the layers are pressed together; when it is opened the exhausted layers (17) and (18), and optionally (19), may be replaced by fresh layers. |
