11results about "Electrolyte holding means" patented technology

Provided is a hybrid battery pack including a plurality of battery modules (100) disposed side by side, and a redox flow battery (200) disposed at one side of the plurality of battery modules (100), wherein an electrolyte path along which an electrolyte circulating in the redox flow battery (200) flows is disposed between the plurality of the battery modules (100).

Described and illustrated is a cell frame for forming an electrochemical cell, in particular of a redox flow battery, peripherally enclosing at least one cell interior and including at least one feed channel for feeding electrolyte into the cell interior, wherein the feed channel has an inlet opening, spaced from the cell interior, for the electrolyte to be fed and an outlet opening, adjacent to the cell interior, for the electrolyte to be fed to flow out into the cell interior. In order that the power density can be increased, it is provided that the feed channel has at least one transport channel, connecting at least in sections the inlet opening with the outlet opening, for transporting the electrolyte through the feed channel into the cell interior and at least one return channel for partially returning the electrolyte to be fed counter to the transport direction (T) of the electrolyte to be fed in the transport channel, in that the return channel is in fluid contact with the transport channel via in each case at least one entry opening for entry of the electrolyte to be returned and exit opening for exit of the electrolyte to be returned, spaced from one another in the transport direction (T) of the electrolyte to be fed.

A redox flow battery system includes a redox flow battery and an ancillary cell that is fluidly connected to the redox flow battery. The ancillary cell includes a barrier electrolyte chamber containing a barrier electrolyte solution. The ancillary cell is designed to adjust either the state of charge or the pH of first and second electrolyte solutions in the redox flow battery.

Provided are methods for fabricating ion exchange membranes. Such a method comprises exposing a polymer to an ionic functional group precursor under conditions to incorporate covalently bound ionic functional groups into the polymer, thereby providing a functionalized polymer comprising the covalently bound ionic functional groups; and forming the functionalized polymer into a membrane, thereby providing an ion exchange membrane that is permeable to some ions present in a fluid in contact with the membrane while impermeable to other ions present in the fluid. The ion exchange membranes and devices incorporating the membranes, e.g., redox flow batteries, are also encompassed by the present disclosure.

The invention relates to an electrochemical device comprising: - two electrodes; - a spacer, placed between the two electrodes, made of a porous polymer material forming a continuous three-dimensional network, having a porosity greater than 70%, preferably greater than 80%, whose pores are interconnected, and possessing charged surface functional groups; - an electrolytic solution comprising a solute in the form of a dissolved salt and impregnating the pores of said spacer; - and a device D for harvesting the electrical energy generated by a potential difference existing between the two electrodes or for applying a potential difference between the two electrodes. Said device is intended for implementing an ion transfer process within said device.

The invention relates to an electrochemical device comprising: - two electrodes; - a stack of membranes, disposed between the two electrodes, comprising an alternation of membranes selectively permeable to cations and membranes selectively permeable to anions, and such that each membrane is separated from a neighboring membrane by an intermembrane space, a spacer being positioned in at least one of the intermembrane spaces thus defined, said spacer being made of a porous polymer material forming a continuous three-dimensional network, having a porosity greater than 70%, preferably greater than 80%, whose pores are interconnected, and having charged surface functional groups; - an aqueous electrolytic solution comprising a solute in the form of a dissolved salt, having a pH ranging from 6 to 9 and impregnating the pores of said spacer;- and a device D for harvesting the electrical energy generated by a potential difference existing between the 2 electrodes or for applying a potential difference between the 2 electrodes.

Safety of redox flow battery systems employing CN ligand electrolytes involves preventing the production of toxic HCN during operation. Disclosed herein are systems for detecting parameters that can lead to the production of HCN when a redox flow battery is operated in a fault condition, which perform corrective actions to ensure that HCN is not formed and further to restore the redox flow battery to a normal operating condition. Also disclosed herein are methods of using the systems.

The safety of redox flow batteries systems employing CN-liganded electrolytes concerns preventing the production of poisonous HCN during operation. Systems are disclosed herein for the detection of parameters under which HCN may be produced when the redox flow batteries are operated under fault conditions, performing corrective actions to ensure HCN is not formed, and further returning the redox flow battery to a normal operating state. Methods employing the systems are also disclosed herein.

The safety of redox flow batteries systems employing CN-liganded electrolytes concerns preventing the production of poisonous HCN during operation. Systems are disclosed herein for the detection of parameters under which HCN may be produced when the redox flow batteries are operated under fault conditions, performing corrective actions to ensure HCN is not formed, and further returning the redox flow battery to a normal operating state. Methods employing the systems are also disclosed herein.

A redox flow battery system includes a redox flow battery and an ancillary cell that is fluidly connected to the redox flow battery. The ancillary cell includes a barrier electrolyte chamber containing a barrier electrolyte solution. The ancillary cell is designed to adjust either the state of charge or the pH of first and second electrolyte solutions in the redox flow battery.

The invention relates to an electrochemical device comprising: - two electrodes (1); - a spacer (4), placed between the 2 electrodes (1), consisting of a porous polymer material forming a continuous three-dimensional network, having a porosity greater than 70%, preferentially greater than 80%, the pores of which are interconnected, and having charged surface functional groups; - an electrolyte solution (7, 8) comprising a solute in the form of a dissolved salt and impregnating the pores of said spacer (4); - and a device (5) for harvesting the electrical energy generated by a potential difference existing between the 2 electrodes or for applying a potential difference between the 2 electrodes (1), said device being intended for carrying out an ion transfer process within said device.