Disclosed is an electrolytic electrolysis device. According to an embodiment, the electrolytic electrolysis device includes: a tank in which a solvent is supplied through an inlet in a first side thereof, is stored therein, and then is discharged through an outlet in a second side thereof, and an electrolyte is input through an entrance formed in a third side thereof; an electrolysis part formed inside the tank and formed of multiple layers in which a plurality of mesh electrode parts and a plurality of diaphragm parts are alternately formed so that the electrolyte sequentially passes; and a discharge part in which a discharge hole is formed so that an electrolyzed gas in an upper portion of the electrolysis part is discharged.

Electrochemical cells (e.g., fuel cells or electrochemical gas extraction cells) supplied with power-to-gas mixtures of dilute hydrogen concentrations may be remarkably improved by the use of porous gas layer electrodes. The electrochemical cells may comprise a first porous gas layer gas diffusion electrode, a second porous gas layer gas diffusion electrode, and a liquid electrolyte Sin contact with the first and second electrodes. The porous gas layers may each comprise a porous, non-conductive, liquid-impermeable material that dramatically improves cell performance.

The electrochemical reactors disclosed herein provide novel oxidation and reduction chemistries and employ increased mass transport rates of materials to and from the surfaces of electrodes therein.

The present invention relates to a water splitting cell having at least one electrode comprising a porous membrane, wherein gas produced at the electrode diffuses out of the cell via the porous membrane, separating the gas from the reaction at the electrode without bubble formation.

An electrolyzing system is provided for producing higher quantities of electrolyzed waters within prescribed pH ranges for optimum usage and which can be operated for producing greater quantities of alkaline electrolyzed water than acidic electrolyzed water consistent with a users requirements. The system includes an electrolytic cartridge having cathode and anode cells each comprising a pair of electrodes disposed in laterally spaced coplanar relation to each other, with a respective ion permeable membrane in spaced relation to the pairs of electrodes. The cells are separated with a common separator plate that maintains the ion permeable membranes in parallel relation with the respective electrodes and which facilitates the communication of brine solution from a brine bath to both cells. The cells further can be operate with staggered input currents and the redirection of electrolyzed water between the cells for optimum control of pH levels of the resulting products.

The electrolytic cell according to the present invention is an electrolytic cell including a cathode chamber, the cathode chamber including: a cathode; and a reverse current absorbing member having a substrate and a reverse current absorbing body, the reverse current absorbing member being disposed to face the cathode, wherein the cathode and the reverse current absorbing body are electrically connected, and when the height at the bottom of the cathode chamber is defined as 0 and the height at the top of the cathode chamber is defined as h, the ratio of area S3 of the reverse current absorbing body present at position I corresponding to a height of h/2 or more and h or less to area S.sub.A of the cathode-facing surface of the substrate corresponding to the position I satisfies 0.20S3/S.sub.A<1.0.

Described herein is a process for the reduction of carbon dioxide comprising: providing an electrochemical device comprising an anode, a cathode, and a polymeric anion exchange membrane therebetween, wherein the polymeric anion exchange membrane comprises an anion exchange polymer, wherein the anion exchange polymer comprises at least one positively charged group selected from a guanidinium, a guanidinium derivative, an N-alkyl conjugated heterocyclic cation, or combinations thereof; introducing a composition comprising carbon dioxide to the cathode; and applying electrical energy to the electrochemical device to effect electrochemical reduction of the carbon dioxide.

Systems and methods for electrochemically producing chemical products are provided. In certain cases, the systems and methods described herein are capable of producing chemical products such as hydrogen peroxide in solutions with relatively low concentrations of electrolyte or other dissolved species at high efficiencies and/or low energetic cost. In some cases, redox mediators are used to spatially decouple direct electrochemical processes from the production of the chemical product.

A method for depositing a catalyst layer onto a porous conductive substrate is provided. A catalyst ink is provided comprising catalyst particles suspended in a solvent. The catalyst ink is deposited onto a porous conductive substrate, wherein the solvent of the deposited catalyst ink is frozen. The frozen solvent is sublimated, leaving the catalyst layer.

Electrode-supported tubular solid-oxide electrochemical cells suitable for use in electrochemical synthesis and processes for manufacturing such are provided.