Patent ID: 9187836
Filing Date: 2015-11-17
Classification: C02F,C25B,H01M,Y02E,Y10T

Abstract:
1. A three-chamber electrochemical cell, comprising: a central chamber for transporting a fluid solution, a first side chamber comprising a first electrode, a first membrane separating the first side chamber from the central chamber and forming a partition between the first chamber and the central chamber, a second side chamber comprising a second electrode, a second membrane separating the second side chamber from the central chamber and forming a partition between the second chamber and the central chamber, and a central section for transport, flow and diffusion of the fluid solution into the central chamber, said central section being symmetrical with respect to a mid-plane between the first and second membranes and parallel to said membranes, the three-chamber electrochemical cell including two half-cells that are symmetrical with respect to the mid-plane, each half-cell comprising one of the side chambers and one of the membranes, the central chamber being formed by the assembly of the two half-cells and the central section being encapsulated in the central chamber between the two half-cells, wherein: the first and second electrodes of the cell are in surface contact with, respectively, the first and second membranes, and the first and second electrodes are produced from a porous electrically conductive material that absorbs mechanical stresses due to a first pressure difference between the first side chamber and the central chamber, and a second pressure difference between the second side chamber and the central chamber on the other hand; and the first and second electrodes are produced from a material including micrometer-sized metal beads compacted with one another leaving interstices between the beads, which form the pores of said electrodes.