(ZA9803966-A)      Gas impervious bipolar separator plate for a proton exchange membrane fuel cell comprises:    (i) 1 electronically conductive material in an amount of 50-95 weight % of the separator plate;    (ii) 1 resin in an amount of 5 weight % of the separator plate; and    (iii) 1 hydrophilic agent suitable for use in a proton exchange membrane fuel cell for attracting water into the separator plate.    All the components are uniformly distributed throughout the plate.    Also claimed is a proton exchange membrane fuel cell stack.    The resin is hydrophilic and the conductive material is selected from carbonaceous materials, metals, metal alloys, metal carbides, metal nitrides and their mixtures. At least one carbonaceous material is present. The hydrophilic agent is a wetting agent selected from oxides of Ti, Al and/or Si. Carbon fibres are also present in an amount of 45 weight % of the separator plate. Specific resin is a thermosetting resin and/or thermoplastic resin and the conductive material is graphite, carbon black and/or carbon fibres. The plate is porous where the porosity is less than about 25% by volume of the plate. The median diameter of the pores is 0.25-2.0 m. The bubble pressure of the plate is &gt; 5 psig and the electrical conductivity of the plate is 5 S/cm. Specific plate comprises 70-90 weight % of electronically conductive material, 8-15 weight % of a thermosetting resin, 0-10 weight % carbon fibres and 0.01-5.0 weight % silica.    USE -   Used in a proton exchange membrane fuel cell stack (claimed).    ADVANTAGE -   The cell is inexpensive to produce, and the plate has improved properties for removal of water from, and internal humidification of, a proton exchange membrane fuel cell. The crush strength is &gt; 200 psi.    (US5942347-A)      Gas impervious bipolar separator plate for a proton exchange membrane fuel cell comprises:    (i) 1 electronically conductive material in an amount of 50-95 weight % of the separator plate;    (ii) 1 resin in an amount of 5 weight % of the separator plate; and    (iii) 1 hydrophilic agent suitable for use in a proton exchange membrane fuel cell for attracting water into the separator plate.    All the components are uniformly distributed throughout the plate.    Also claimed is a proton exchange membrane fuel cell stack.    The resin is hydrophilic and the conductive material is selected from carbonaceous materials, metals, metal alloys, metal carbides, metal nitrides and their mixtures. At least one carbonaceous material is present. The hydrophilic agent is a wetting agent selected from oxides of Ti, Al and/or Si. Carbon fibres are also present in an amount of 45 weight % of the separator plate. Specific resin is a thermosetting resin and/or thermoplastic resin and the conductive material is graphite, carbon black and/or carbon fibres. The plate is porous where the porosity is less than about 25% by volume of the plate. The median diameter of the pores is 0.25-2.0 m. The bubble pressure of the plate is &gt; 5 psig and the electrical conductivity of the plate is 5 S/cm. Specific plate comprises 70-90 weight % of electronically conductive material, 8-15 weight % of a thermosetting resin, 0-10 weight % carbon fibres and 0.01-5.0 weight % silica.    USE -   Used in a proton exchange membrane fuel cell stack (claimed).    ADVANTAGE -   The cell is inexpensive to produce, and the plate has improved properties for removal of water from, and internal humidification of, a proton exchange membrane fuel cell. The crush strength is &gt; 200 psi.    (EP992074-A1)      Gas impervious bipolar separator plate for a proton exchange membrane fuel cell comprises:    (i) 1 electronically conductive material in an amount of 50-95 weight % of the separator plate;    (ii) 1 resin in an amount of 5 weight % of the separator plate; and    (iii) 1 hydrophilic agent suitable for use in a proton exchange membrane fuel cell for attracting water into the separator plate.    All the components are uniformly distributed throughout the plate.    Also claimed is a proton exchange membrane fuel cell stack.    The resin is hydrophilic and the conductive material is selected from carbonaceous materials, metals, metal alloys, metal carbides, metal nitrides and their mixtures. At least one carbonaceous material is present. The hydrophilic agent is a wetting agent selected from oxides of Ti, Al and/or Si. Carbon fibres are also present in an amount of 45 weight % of the separator plate. Specific resin is a thermosetting resin and/or thermoplastic resin and the conductive material is graphite, carbon black and/or carbon fibres. The plate is porous where the porosity is less than about 25% by volume of the plate. The median diameter of the pores is 0.25-2.0 m. The bubble pressure of the plate is &gt; 5 psig and the electrical conductivity of the plate is 5 S/cm. Specific plate comprises 70-90 weight % of electronically conductive material, 8-15 weight % of a thermosetting resin, 0-10 weight % carbon fibres and 0.01-5.0 weight % silica.    USE -   Used in a proton exchange membrane fuel cell stack (claimed).    ADVANTAGE -   The cell is inexpensive to produce, and the plate has improved properties for removal of water from, and internal humidification of, a proton exchange membrane fuel cell. The crush strength is &gt; 200 psi.    (CN1264499-A)      Gas impervious bipolar separator plate for a proton exchange membrane fuel cell comprises:    (i) 1 electronically conductive material in an amount of 50-95 weight % of the separator plate;    (ii) 1 resin in an amount of 5 weight % of the separator plate; and    (iii) 1 hydrophilic agent suitable for use in a proton exchange membrane fuel cell for attracting water into the separator plate.    All the components are uniformly distributed throughout the plate.    Also claimed is a proton exchange membrane fuel cell stack.    The resin is hydrophilic and the conductive material is selected from carbonaceous materials, metals, metal alloys, metal carbides, metal nitrides and their mixtures. At least one carbonaceous material is present. The hydrophilic agent is a wetting agent selected from oxides of Ti, Al and/or Si. Carbon fibres are also present in an amount of 45 weight % of the separator plate. Specific resin is a thermosetting resin and/or thermoplastic resin and the conductive material is graphite, carbon black and/or carbon fibres. The plate is porous where the porosity is less than about 25% by volume of the plate. The median diameter of the pores is 0.25-2.0 m. The bubble pressure of the plate is &gt; 5 psig and the electrical conductivity of the plate is 5 S/cm. Specific plate comprises 70-90 weight % of electronically conductive material, 8-15 weight % of a thermosetting resin, 0-10 weight % carbon fibres and 0.01-5.0 weight % silica.    USE -   Used in a proton exchange membrane fuel cell stack (claimed).    ADVANTAGE -   The cell is inexpensive to produce, and the plate has improved properties for removal of water from, and internal humidification of, a proton exchange membrane fuel cell. The crush strength is &gt; 200 psi.    (TW399348-A)      Gas impervious bipolar separator plate for a proton exchange membrane fuel cell comprises:    (i) 1 electronically conductive material in an amount of 50-95 weight % of the separator plate;    (ii) 1 resin in an amount of 5 weight % of the separator plate; and    (iii) 1 hydrophilic agent suitable for use in a proton exchange membrane fuel cell for attracting water into the separator plate.    All the components are uniformly distributed throughout the plate.    Also claimed is a proton exchange membrane fuel cell stack.    The resin is hydrophilic and the conductive material is selected from carbonaceous materials, metals, metal alloys, metal carbides, metal nitrides and their mixtures. At least one carbonaceous material is present. The hydrophilic agent is a wetting agent selected from oxides of Ti, Al and/or Si. Carbon fibres are also present in an amount of 45 weight % of the separator plate. Specific resin is a thermosetting resin and/or thermoplastic resin and the conductive material is graphite, carbon black and/or carbon fibres. The plate is porous where the porosity is less than about 25% by volume of the plate. The median diameter of the pores is 0.25-2.0 m. The bubble pressure of the plate is &gt; 5 psig and the electrical conductivity of the plate is 5 S/cm. Specific plate comprises 70-90 weight % of electronically conductive material, 8-15 weight % of a thermosetting resin, 0-10 weight % carbon fibres and 0.01-5.0 weight % silica.    USE -   Used in a proton exchange membrane fuel cell stack (claimed).    ADVANTAGE -   The cell is inexpensive to produce, and the plate has improved properties for removal of water from, and internal humidification of, a proton exchange membrane fuel cell. The crush strength is &gt; 200 psi.    (JP2001509950-W)      Gas impervious bipolar separator plate for a proton exchange membrane fuel cell comprises:    (i) 1 electronically conductive material in an amount of 50-95 weight % of the separator plate;    (ii) 1 resin in an amount of 5 weight % of the separator plate; and    (iii) 1 hydrophilic agent suitable for use in a proton exchange membrane fuel cell for attracting water into the separator plate.    All the components are uniformly distributed throughout the plate.    Also claimed is a proton exchange membrane fuel cell stack.    The resin is hydrophilic and the conductive material is selected from carbonaceous materials, metals, metal alloys, metal carbides, metal nitrides and their mixtures. At least one carbonaceous material is present. The hydrophilic agent is a wetting agent selected from oxides of Ti, Al and/or Si. Carbon fibres are also present in an amount of 45 weight % of the separator plate. Specific resin is a thermosetting resin and/or thermoplastic resin and the conductive material is graphite, carbon black and/or carbon fibres. The plate is porous where the porosity is less than about 25% by volume of the plate. The median diameter of the pores is 0.25-2.0 m. The bubble pressure of the plate is &gt; 5 psig and the electrical conductivity of the plate is 5 S/cm. Specific plate comprises 70-90 weight % of electronically conductive material, 8-15 weight % of a thermosetting resin, 0-10 weight % carbon fibres and 0.01-5.0 weight % silica.    USE -   Used in a proton exchange membrane fuel cell stack (claimed).    ADVANTAGE -   The cell is inexpensive to produce, and the plate has improved properties for removal of water from, and internal humidification of, a proton exchange membrane fuel cell. The crush strength is &gt; 200 psi.    (KR2001012728-A)      Gas impervious bipolar separator plate for a proton exchange membrane fuel cell comprises:    (i) 1 electronically conductive material in an amount of 50-95 weight % of the separator plate;    (ii) 1 resin in an amount of 5 weight % of the separator plate; and    (iii) 1 hydrophilic agent suitable for use in a proton exchange membrane fuel cell for attracting water into the separator plate.    All the components are uniformly distributed throughout the plate.    Also claimed is a proton exchange membrane fuel cell stack.    The resin is hydrophilic and the conductive material is selected from carbonaceous materials, metals, metal alloys, metal carbides, metal nitrides and their mixtures. At least one carbonaceous material is present. The hydrophilic agent is a wetting agent selected from oxides of Ti, Al and/or Si. Carbon fibres are also present in an amount of 45 weight % of the separator plate. Specific resin is a thermosetting resin and/or thermoplastic resin and the conductive material is graphite, carbon black and/or carbon fibres. The plate is porous where the porosity is less than about 25% by volume of the plate. The median diameter of the pores is 0.25-2.0 m. The bubble pressure of the plate is &gt; 5 psig and the electrical conductivity of the plate is 5 S/cm. Specific plate comprises 70-90 weight % of electronically conductive material, 8-15 weight % of a thermosetting resin, 0-10 weight % carbon fibres and 0.01-5.0 weight % silica.    USE -   Used in a proton exchange membrane fuel cell stack (claimed).    ADVANTAGE -   The cell is inexpensive to produce, and the plate has improved properties for removal of water from, and internal humidification of, a proton exchange membrane fuel cell. The crush strength is &gt; 200 psi.