A method of production of a channel member for fuel cell use comprising a step of obtaining a sheet-shaped first conductor part 11 containing a carbon material of at least one of carbon nanotubes, granular graphite, and carbon fibers and a first resin, a step of laying a sheet-shaped second conductor part 21 containing a carbon material and a second resin with a lower melting point than the first resin to form a sheet-shaped base part 13, a step of transferring a grooved surface 51 to a surface to form a grooved base part 16 provided with groove part 15, a step of laying a sheet-shaped third conductor part 31 containing a carbon material and a third resin with a lower melting point than the first resin, and a step of integrally joining the grooved base part and the third conductor part by hot melt bonding to cover the groove parts.

In order to provide a bipolar plate that has optimized electrical conductivity and can be produced as easily as possible, the invention proposes that the bipolar plate comprises an electrically conductive main body and an electrically conductive coating, wherein the electrically conductive coating comprises a binding material and one or more electrically conductive fillers, and wherein a pigment volume concentration in the coating corresponds at least to a pigment volume concentration required to achieve a percolation threshold.

In order to provide a bipolar plate that has optimized electrical conductivity and can be produced as easily as possible, the invention proposes that the bipolar plate comprises an electrically conductive main body and an electrically conductive coating, wherein the electrically conductive coating comprises a binding material and one or more electrically conductive fillers, and wherein a pigment volume concentration in the coating corresponds at least to a pigment volume concentration required to achieve a percolation threshold.

An intermediate material of a thermoplastic prepreg for a fuel cell separation plate comprises a hydrophobic thermoplastic resin film and a fiber base. The hydrophobic thermoplastic resin film has a degree of crystallization of 1 to 20%, a thickness of 3 to 50 μm, and (iii) a content of an electroconductive material of 1 to 20 wt. %. The film is laminated on at least one surface of the fiber base. The thermoplastic prepreg for a fuel cell separation plate is manufactured by pressurizing the thermoplastic prepreg intermediate material at a temperature higher than the melting point of the hydrophobic thermoplastic resin film. A fuel cell separation membrane manufactured using the thermoplastic prepreg intermediate material and thermoplastic prepreg is thin and light-weight, and have a good durability.

An intermediate material of a thermoplastic prepreg for a fuel cell separation plate comprises a hydrophobic thermoplastic resin film and a fiber base. The hydrophobic thermoplastic resin film has a degree of crystallization of 1 to 20%, a thickness of 3 to 50 μm, and (iii) a content of an electroconductive material of 1 to 20 wt. %. The film is laminated on at least one surface of the fiber base. The thermoplastic prepreg for a fuel cell separation plate is manufactured by pressurizing the thermoplastic prepreg intermediate material at a temperature higher than the melting point of the hydrophobic thermoplastic resin film. A fuel cell separation membrane manufactured using the thermoplastic prepreg intermediate material and thermoplastic prepreg is thin and light-weight, and have a good durability.

Disclosed herein are compositions for use in an energy providing devices and methods of preparing such devices. Also included herein is energy providing devices that comprise a charged compound modified substrate or zwitterion-modified substrate or energy providing devices that comprise an electrolyte that comprises a perhalogenatedphenyl azide charged or zwitterionic compound.

Disclosed herein are compositions for use in an energy providing devices and methods of preparing such devices. Also included herein is energy providing devices that comprise a charged compound modified substrate or zwitterion-modified substrate or energy providing devices that comprise an electrolyte that comprises a perhalogenatedphenyl azide charged or zwitterionic compound.

Provided is a sheet press molding method by which a molded product having a small plate thickness deviation is obtained. Such a sheet press molding method is provided with a process in which a molded product (30) having a recess and protrusion pattern portion (32), to which a recess and protrusion pattern (3) is transferred, is formed by pressurizing a sheet-shaped material (20) including 60 vol. % to 95 vol. % of a filler and a resin composition using a pair of molds (40) having the predetermined recess and protrusion pattern (3) composed of recessed portions (3a, 3b, and 3c) and protrusion portions (23a, 23b, 23c, and 23d) in at least one of a pair of the molds, in which the mold provided with a dummy pattern (24) composed of dummy protrusion portions (24a) that offset the difference between the total volume of the protrusion portions (23a, 23b, 23c, and 23d) formed on the inside (14) and the total volume of the recessed portions (3a, 3b, and 3c) disposed between the protruding portions (23a, 23b, 23c, and 23d) and the side surfaces (14b) of the inside (14) and the recessed portions (3a, 3b, and 3c) disposed between the protruding portions (23a, 23b, 23c, and 23d) on the inside (14) is used as a pair of the molds (40).

Provided is a sheet press molding method by which a molded product having a small plate thickness deviation is obtained. Such a sheet press molding method is provided with a process in which a molded product (30) having a recess and protrusion pattern portion (32), to which a recess and protrusion pattern (3) is transferred, is formed by pressurizing a sheet-shaped material (20) including 60 vol. % to 95 vol. % of a filler and a resin composition using a pair of molds (40) having the predetermined recess and protrusion pattern (3) composed of recessed portions (3a, 3b, and 3c) and protrusion portions (23a, 23b, 23c, and 23d) in at least one of a pair of the molds, in which the mold provided with a dummy pattern (24) composed of dummy protrusion portions (24a) that offset the difference between the total volume of the protrusion portions (23a, 23b, 23c, and 23d) formed on the inside (14) and the total volume of the recessed portions (3a, 3b, and 3c) disposed between the protruding portions (23a, 23b, 23c, and 23d) and the side surfaces (14b) of the inside (14) and the recessed portions (3a, 3b, and 3c) disposed between the protruding portions (23a, 23b, 23c, and 23d) on the inside (14) is used as a pair of the molds (40).

A flow battery includes an electrochemical cell that has a first electrode, a second electrode spaced apart from the first electrode, and a separator layer arranged between the first electrode and the second electrode. The separator layer is formed of a polymer that has a polymer backbone with cyclic groups that are free of unsaturated nitrogen and one or more polar groups bonded between the cyclic groups.