The present disclosure provides a hydrogen evolution electrode and a preparation method thereof. The preparation method includes the following steps: providing an electrolyte including Co(NO.sub.3).sub.2.Math.6H.sub.2O with a Co(NO.sub.3).sub.2 concentration of 0.005 mol L.sup.−1 to 0.015 mol L.sup.−1, MnCl.sub.2.Math.4H.sub.2O with a MnCl.sub.2 concentration of 0.005 mol L.sup.−1 to 0.01 mol L.sup.−1, KCl with a concentration of 0.003 mol L.sup.−1 to 0.008 mol L.sup.−1, and CH.sub.3CSNH.sub.2 with a concentration of 0.04 mol L.sup.−1 to 0.06 mol L.sup.−1; adjusting the electrolyte to a pH value of 6 to 7; providing a cathode in the form of a substrate; and conducting electrolysis in a cyclic voltammetry mode, thereby preparing the electrode for hydrogen production by water electrolysis through electrochemical deposition of a Co.sub.9-xMn.sub.xS.sub.8 nanosheet catalyst on the cathode substrate, where 1≤X≤7.

The present disclosure provides a hydrogen evolution electrode and a preparation method thereof. The preparation method includes the following steps: providing an electrolyte including Co(NO.sub.3).sub.2.Math.6H.sub.2O with a Co(NO.sub.3).sub.2 concentration of 0.005 mol L.sup.−1 to 0.015 mol L.sup.−1, MnCl.sub.2.Math.4H.sub.2O with a MnCl.sub.2 concentration of 0.005 mol L.sup.−1 to 0.01 mol L.sup.−1, KCl with a concentration of 0.003 mol L.sup.−1 to 0.008 mol L.sup.−1, and CH.sub.3CSNH.sub.2 with a concentration of 0.04 mol L.sup.−1 to 0.06 mol L.sup.−1; adjusting the electrolyte to a pH value of 6 to 7; providing a cathode in the form of a substrate; and conducting electrolysis in a cyclic voltammetry mode, thereby preparing the electrode for hydrogen production by water electrolysis through electrochemical deposition of a Co.sub.9-xMn.sub.xS.sub.8 nanosheet catalyst on the cathode substrate, where 1≤X≤7.

An electrolyzer stores of electrolytic cells, in which a pressing force applied to the stack is maintained by automatically adjusting the position of a locking mechanism of a safety device. The electrolyzer includes a stack obtained by stacking a plurality of electrolytic cells with membranes interposed therebetween, a pressing plate arranged on one end side in a stacking direction of the stack, an actuator which generates a pressing force along the stacking direction by moving the pressing plate, a safety device which is configured to maintain the pressing force by allowing the locking mechanism to come into contact with the contact plate to prevent the retraction of the pressing plate, when the actuator is not operated, and a control device which adjusts a distance between the locking mechanism and the contact plate within a specific range so as to maintain the pressing force which acts on the stack.

A system and method for producing methanol via dry reforming and methanol synthesis in the same vessel, including converting methane and carbon dioxide in the vessel into syngas including hydrogen and carbon monoxide via dry reforming in the vessel, cooling the syngas via a heat exchanger in the vessel, and synthesizing methanol from the syngas in the vessel.

An apparatus for electrochemical activation may include an intake for an aqueous salt solution, a flow conduit structured to direct the aqueous salt solution through the apparatus comprising at least two electrodes spaced apart from each other within the flow conduit; a control module electrically coupled to the at least two electrodes, wherein the control module controls application of electricity to the at least two electrodes; and a sensor structured to measure a parameter of the aqueous salt solution and provide feedback to the control module to control an aspect of operation of the apparatus.

An apparatus for electrochemical activation may include an intake for an aqueous salt solution, a flow conduit structured to direct the aqueous salt solution through the apparatus comprising at least two electrodes spaced apart from each other within the flow conduit; a control module electrically coupled to the at least two electrodes, wherein the control module controls application of electricity to the at least two electrodes; and a sensor structured to measure a parameter of the aqueous salt solution and provide feedback to the control module to control an aspect of operation of the apparatus.

A sprayer apparatus includes a spray nozzle in fluid communication with a reservoir for an aqueous salt solution; at least two electrodes spaced apart from each other integrated into the reservoir; a controller structured to apply electricity to the at least two electrodes, wherein the controller controls an application of electricity to cause a first one of the at least two electrodes to be positively charged and a second one of the at least two electrodes to be negatively charged; and wherein the sprayer apparatus is configured to produce air bubbles during application of electricity, wherein the air bubbles cause agitation and mixing of the aqueous salt solution.

A sprayer apparatus includes a spray nozzle in fluid communication with a reservoir for an aqueous salt solution; at least two electrodes spaced apart from each other integrated into the reservoir; a controller structured to apply electricity to the at least two electrodes, wherein the controller controls an application of electricity to cause a first one of the at least two electrodes to be positively charged and a second one of the at least two electrodes to be negatively charged; and wherein the sprayer apparatus is configured to produce air bubbles during application of electricity, wherein the air bubbles cause agitation and mixing of the aqueous salt solution.

An electrolytic reactor of an oxyhydrogen machine includes a main body with an internal chamber for accommodating a liquid, a carrier installed to the chamber for arranging even numbered electrode plates which are spaced from each other and two adjacent electrode plates having different polarities, a multiple of partitions extending to an appropriate length from the top surface to the bottom surface of the main body and spaced from each other, a communicating channel formed by each electrode plate and the main body and disposed between the bottom surface of the main body and each electrode plate, a liquid storage portion formed by the space between the partitions and the chamber and communicated to the communicating channel and a gas extraction unit installed on the main body and having independent first and second gas collection chambers for collecting hydrogen and oxygen respectively.

An electrolytic reactor of an oxyhydrogen machine includes a main body with an internal chamber for accommodating a liquid, a carrier installed to the chamber for arranging even numbered electrode plates which are spaced from each other and two adjacent electrode plates having different polarities, a multiple of partitions extending to an appropriate length from the top surface to the bottom surface of the main body and spaced from each other, a communicating channel formed by each electrode plate and the main body and disposed between the bottom surface of the main body and each electrode plate, a liquid storage portion formed by the space between the partitions and the chamber and communicated to the communicating channel and a gas extraction unit installed on the main body and having independent first and second gas collection chambers for collecting hydrogen and oxygen respectively.