A modular flow battery includes a battery stack container housing a plurality of redox flow battery stacks in fluid communication with at least one pair of electrolyte containers including an anolyte container for holding an anolyte and a catholyte container for holding a catholyte. Additional pairs of electrolyte containers can be connected to the battery stack container to increase an amount of energy that can be stored by the modular flow battery system. Respective housings enclosing each of the battery stack container and the electrolyte containers are configured for operation in a stacked configuration. In this manner, the energy storage capacity of the modular flow battery system can be further increased with substantially no increase in a lateral area occupied by the system.

A separator includes a base including projections. The base is made of a metal plate. The separator includes a conductive layer arranged on a top surface of each of the projections of the base. The conductive layer includes conductive carbon materials, conductive particles, and a thermosetting resin. The conductive carbon materials and the conductive particles are dispersed in the resin and are in contact with each other over an entirety of the conductive layer in a thickness direction of the conductive layer.

A separator includes a base including projections. The base is made of a metal plate. The separator includes a conductive layer arranged on a top surface of each of the projections of the base. The conductive layer includes conductive carbon materials, conductive particles, and a thermosetting resin. The conductive carbon materials and the conductive particles are dispersed in the resin and are in contact with each other over an entirety of the conductive layer in a thickness direction of the conductive layer.

A method of preparing a bipolar plate for a fuel cell is disclosed. The method includes (a) using an electrically conductive filler and a polymer binder to prepare a bipolar plate blank, (b) vacuum-sealing the bipolar plate blank in a metal foil bag, (c) applying hot isostatic pressing to the bipolar plate blank vacuum-sealed in the metal foil bag at a pressure greater than 100 MPa and a temperature of 150-400° C., and (d) peeling the bipolar plate blank that has undergone the hot isostatic pressing from the metal foil bag, and thereby obtaining the bipolar plate. A bipolar plate prepared by the method is also disclosed.

A method for producing a separator plate, where thermoplastic polymer material and a powder of electro-conductive filler, ECF is kneaded at a kneading temperature above a glass transition temperature for the thermoplastic polymer material but below a melting temperature for the thermoplastic polymer material in order to provide a malleable but not molten compound and for causing fibrillization in the thermoplastic polymer material prior to hot-compacting the sheet in a press-form to form a separator plate. A production facility for practicing the method is also disclosed.

A polymer including a hydrophilic block and a hydrophobic block, wherein the hydrophilic block includes a unit derived from a compound represented by Chemical Formula 1, and the hydrophobic block includes a unit derived from a fluorine-containing compound, a polymer separator including the same, and a membrane electrode assembly, a fuel cell and a redox flow battery including the same.

Disclosed is a method for manufacturing a fuel cell separator having minimized surface defect via surface polishing using high-pressure injection, in which surface polishing is performed using a high-pressure injection scheme in which polishing-fluid is injected at high-pressure through a polishing-fluid injection nozzle before performing vision inspection, thereby minimizing the surface defect of the fuel cell separator.

A bipolar plate for a fuel cell is provided. The bipolar plate is formed by pressing a base plate, wherein the base plate is formed by a soft graphite plate. The soft graphite plate has a density of 0.8-1.3 g/cm.sup.3, a carbon content more than 98% and an ash content less than 2%. Based on the thickness of the base plate before pressing, the thickness compression ratio of the bipolar plate is 40-50%.

A load receiver member of a fuel cell separator member of a fuel cell stack includes an attachment portion disposed between an outer peripheral portion of a first metal separator and an outer peripheral portion of a second metal separator, and a tab continuous with the attachment portion and protruding from an outer peripheral portion of a joint separator. The attachment portion is joined to the outer peripheral portion of the joint separator by a joint portion.

A laminate for a battery with a polypropylene adhesive layer and a metal substrate layer: (1) the adhesive includes 40-94 wt % of a propylene copolymer (A), 3-30 wt % of a butene-containing copolymer (B), 3-30 wt % of an ethylene-α-olefin copolymer (C) ((A), (B), and (C) is 100 wt %), (2) the copolymer (A) has a melting point of 130° C. or more measured with a differential scanning calorimeter, and a total proportion of a structural unit derived from ethylene is 4-25 mol % relative to 100 mol % of a total structural units forming all the copolymers (A) contained in the adhesive, (3) the copolymer (B) includes less than 1 mol % of a structural unit derived from ethylene, and has a melting point of 100° C. or less measured with a differential scanning calorimeter, and (4) the copolymer (C) includes 50-99 mol % of a structural unit derived from ethylene.