Abstract: A high efficiency electrolysis device is revealed. The electrolysis device includes a tubular membrane and an electrically conductive wire. The tubular membrane consists of an outer electrically conductive layer with an inner insulation layer disposed on an inner surface thereof, an insertion hole surrounded by the inner insulation layer, and a plurality of nano-scale filter holes penetrating the outer electrically conductive layer and the inner insulation layer. The electrically conductive wire is inserted through the insertion hole of the tubular membrane. Thereby the electrically conductive wire is located close to the outer electrically conductive layer to form a stronger electric field. A distance between the electrically conductive wire and the outer electrically conductive layer is fixed so that efficiency of water electrolysis will not be affected due to enlargement of the device. The electrolysis efficiency is improved due to larger surface area in contact with water per unit volume.

Abstract: Asymmetric TPX porous membranes for gas separation are prepared by wet, and dry/wet phase inversion methods. A casting polymer solution including TPX, a selected solvent and optionally a selected non-solvent, is casted on a support, and within 100 seconds after the casting step, the casted polymer is immersed in a coagulant to form a membrane. The formed membrane is extracted, dried and optionally heat treated.