A zinc-iron chloride flow battery relies on mixed, equimolar electrolytes to maintain a consistent open-circuit voltage of about 1.5 V and stable performance during continuous charge-discharge. Considering the good performance relative to the low-cost materials, zinc-iron chloride flow batteries represent a promising new approach in grid-scale and other energy storage applications.

A zinc-iron chloride flow battery relies on mixed, equimolar electrolytes to maintain a consistent open-circuit voltage of about 1.5 V and stable performance during continuous charge-discharge. Considering the good performance relative to the low-cost materials, zinc-iron chloride flow batteries represent a promising new approach in grid-scale and other energy storage applications.

A novel polyfluorene-based ionomer, an anion exchange membrane, a method for preparing the polyfluorene-based ionomer, and a method for fabricating the anion exchange membrane are proposed. The polyfluorene-based ionomer contains no aryl ether bonds in the polymer backbone and includes piperidinium groups incorporated into the repeating units. The anion exchange membrane is fabricated from the polyfluorene-based ionomer. The anion exchange membrane has good thermal and chemical stability, excellent mechanical properties, and high ion conductivity. Due to these advantages, the anion exchange membrane can be applied as a membrane for an alkaline fuel cell and to a binder for an alkaline fuel cell or water electrolysis.

The present invention concerns a device for producing electrical energy, comprising: a) a first reservoir A for receiving an electrolyte solution having a concentration CA of a solute and comprising an electrode (30A) in contact with the electrolyte solution having concentration CA; b) a second reservoir B for receiving an electrolyte solution having a concentration CB of one and the same solute, CB being lower than CA, and comprising an electrode in contact with the electrolyte solution having concentration CB; c) a membrane separating the two reservoirs, said membrane comprising pores allowing the electrolytes to diffuse from reservoir A to reservoir B through said pore or pores; and d) a device capable of supplying the electrical energy generated by the potential difference existing between the two electrodes, characterized in that the membrane comprises at least one layer formed of a cellulosic material comprising a network of crosslinked cellulose nanofibres and/or microfibres.

The present invention concerns a device for producing electrical energy, comprising: a) a first reservoir A for receiving an electrolyte solution having a concentration CA of a solute and comprising an electrode (30A) in contact with the electrolyte solution having concentration CA; b) a second reservoir B for receiving an electrolyte solution having a concentration CB of one and the same solute, CB being lower than CA, and comprising an electrode in contact with the electrolyte solution having concentration CB; c) a membrane separating the two reservoirs, said membrane comprising pores allowing the electrolytes to diffuse from reservoir A to reservoir B through said pore or pores; and d) a device capable of supplying the electrical energy generated by the potential difference existing between the two electrodes, characterized in that the membrane comprises at least one layer formed of a cellulosic material comprising a network of crosslinked cellulose nanofibres and/or microfibres.

A tab of a load receiver forming a fuel cell separator member includes a base portion in the form of a metal plate, and a resin member covering the base portion. A hole, into which the resin member is partially inserted, is formed in the base portion. The resin member includes a thick portion, and a thin portion positioned closer to a first separator than the thick portion is. The hole is disposed so as to be overlapped with the thick portion.

A tab of a load receiver forming a fuel cell separator member includes a base portion in the form of a metal plate, and a resin member covering the base portion. A hole, into which the resin member is partially inserted, is formed in the base portion. The resin member includes a thick portion, and a thin portion positioned closer to a first separator than the thick portion is. The hole is disposed so as to be overlapped with the thick portion.

Provided is a fuel cell separator precursor that is obtained by impregnating a porous sheet, which contains a conductive filler, with a resin composition that contains a thermoplastic resin and a conductive filler.

Provided is a fuel cell separator precursor that is obtained by impregnating a porous sheet, which contains a conductive filler, with a resin composition that contains a thermoplastic resin and a conductive filler.

A fuel battery includes a membrane-electrode assembly including a first catalyst layer and a first gas diffusion layer stacked on a first surface of a polymer electrolyte membrane, and a second catalyst layer and a second gas diffusion layer stacked on a second surface of the polymer electrolyte membrane. The membrane-electrode assembly is interposed between a first separator and a second separator. The first separator includes a rib and a groove on a surface that is in contact with the first gas diffusion layer, the rib and the groove defining a gas flow path through which a reaction gas is to flow. A thickness of the first gas diffusion layer is defined as h, and a width of a portion of the rib that is in contact with the first gas diffusion layer is defined as Rw such that 0.29 Rw≤h≤0.55 Rw is satisfied.