1747 results about "Electrolysed water" patented technology

Feed water comprising an aqueous salt solution is supplied to an anode chamber and to a cathode chamber. The feed water is cathodically electrolyzed in the cathode chamber to produce alkaline electrolyzed water (catholyte) and is anodically electrolyzed in the anode chamber to produce electrolyzed water (anolyte) whose pH is modified. A portion of alkaline catholyte from the cathode chamber is recycled back to the feed water during continuous electrolysis to provide a blend of feed water and alkaline catholyte to the anode chamber to control pH of the anodically electrolyzed water therein to provide more stable bactericidal activity thereof over time.

There is provided an apparatus for producing strong alkaline reductive electrolyzed water and acidic water that enables efficient production of electrolyzed water that has excellent washing and sterilizing effects. There is provided an apparatus for producing strong alkaline reductive electrolyzed water and acidic water, which includes an electrolyzer provided with a strong alkaline reductive electrolyzed water-producing chamber, an acidic water-producing chamber and a partitioning membrane, wherein a flow path diffusing device is provided in the electrolyzer, and a gap between the cathode plate and the anode plate of 0.1 mm to 1 mm.

Apparatus and methods are provided for producing electrolytic water using three chambers, rigid plates and ion exchange membranes. Benefits include reduced scale production and increased long-term bactericidal effects of the water produced.

An apparatus for the electrolytic splitting of water into hydrogen and/or oxygen, the apparatus comprising: (i) at least one lithographically-patternable substrate having a surface; (ii) a plurality of microscaled catalytic electrodes embedded in said surface; (iii) at least one counter electrode in proximity to but not on said surface; (iv) means for collecting evolved hydrogen and/or oxygen gas; (v) electrical powering means for applying a voltage across said plurality of microscaled catalytic electrodes and said at least one counter electrode; and (vi) a container for holding an aqueous electrolyte and housing said plurality of microscaled catalytic electrodes and said at least one counter electrode. Electrolytic processes using the above electrolytic apparatus or functional mimics thereof are also described.

The invention relates to the field of catalysts for energy-producing devices such as fuel cells, metal-air cells, electrolysed water and the like, in particular to a dual-function non-noble-metal catalyst and a preparation method thereof. The structure of the dual-function catalyst with activity of realizing oxygen reduction and oxygen release simultaneously is that non-noble-metal nanoparticles are dispersedly coated with a two-dimensional nitrogen-doped porous carbon layer, and the active center of the catalyst is the non-noble-metal nanoparticles coated with nitrogen-carbon, non-noble-metal-nitrogen-carbon and the carbon layer. The non-noble-metal oxygen electrode catalyst has the advantages that raw materials are cheap, a preparation process is simple and template removal and other complicated operating steps are avoided, thereby being suitable for commercial production and capable of substantially reducing cost under the premise that catalytic performance is guaranteed.

The invention discloses an electrolyzed-water catalytic material with a nanometer core-shell structure of cobalt sulfide and molybdenum disulfide. The electrolyzed-water catalytic material is composed of a catalytic active material and a carrier, wherein the catalytic active material is a material with the nanometer core-shell structure of cobalt sulfide and molybdenum disulfide; molybdenum disulfide is a shell; cobalt sulfide is a core; and the carrier is ultrafine carbon fiber. The electrolyzed-water catalytic material provided by the invention has high specific surface area and porosity, is favorable for diffusion and gas desorption of electrolyte, has the characteristics of dual functions of hydrogen evolution and oxygen evolution at the same time, and can be directly used as an electrode for electrocatalytic hydrogen preparation without the need of loading onto the electrode.

The invention belongs to the technical field of water electrolysis and particularly relates to a three-electrode system double-electrolytic bath two-step water-electrolytic hydrogen producing device and method. The electrolysis device comprises two independent electrolytic baths 1 and 2, a hydrogen evolution catalyzing electrode, an oxygen evolution catalyzing electrode, a nickel hydroxide electrode and an alkaline electrolyte. According to the electrolysis device, the water electrolysis process is divided into two steps of hydrogen production and oxygen production which are respectively and alternately carried out in the two electrolytic baths 1 and 2. The device has the advantages that the steps of hydrogen production and oxygen production which are simultaneously generated in conventional water electrolysis can be effectively separated and respectively completed in different electrolytic baths, so that high-purity hydrogen can be produced under the condition of adopting no diaphragm and the water-electrolytic hydrogen producing cost is further reduced.

The manufacturing apparatus for producing alkaline ionized water and acidic water by electrolysis of water has an electrolytic bath including a cathode cell, an intermediate cell, and an anode cell, separated by diaphragms; an electrolysis solution bath connected to the intermediate cell via an electrolysis solution circulating line and an electrolysis solution circulating pump; a circulation container bath for alkaline ionized water connected to the cathode cell via an alkaline ionized water circulating line and an alkaline ionized water circulating pump; a supplying line for raw material water for producing acidic water connected to an inlet of the anode cell; a withdrawing line for acidic water connected to an outlet of the anode cell; a supplying system for raw material water for making the alkaline ionized water connected to the circulation container bath and a withdrawing line with a water collecting device for withdrawing alkaline ionized water.

A method and apparatus for generating electrolyzed water easy to carry out or handle even in ordinary homes. An electrolyte aqueous solution is circuited through a first electrolysis chamber 3a of two electrolysis chambers placed on opposite sides of an ion-permeable membrane 2, and raw water is supplied only to the second electrolysis chamber 3b. A voltage is applied between electrodes 7a and 7b to cause electrolysis. Electrolyzed water generated in the second electrolysis chamber 3b is drawn out. The concentration of the electrolyte aqueous solution circulated through the first electrolysis chamber 3a is maintained within a predetermined range. The membrane 2 is an anion-exchange membrane. The electrolyte aqueous solution is circulated through the first cathode-side electrolysis chamber 3a; raw water is supplied only to the second anode-side electrolysis chamber 3b; and acid electrolyzed water generated in the anode-side electrolysis chamber 3a is drawn out. The electrolyte aqueous solution is NaCl or KCl aqueous solution. The concentration is maintained within the predetermined range by adding hydrochloric acid according to the pH of the NaCl or KCl solution or the amount of reaction of this solution computed from the amount of energization during the electrolysis.

The present invention discloses a kind of washing machine and washing method. The washing machine includes washing tub for holding washed matter, water supply device to supply water to the washing tub, water electrolyzing device connected serially to the water supply device to electrolyze water, and modifier liquid supplier connected to the water supply device. While supplying water to the washing machine, water is electrolyzed and water modifier is added into water, so as to raise the washing effect and omit detergent. In addition, the present invention may electrolyze inversely to supply acid water to the washing tub for rinsing and sterilizing.

The invention discloses an aquatic product sterilizing pre-treating and cold-preserving method. The method comprises the steps of: firstly, washing an aquatic product by cold water to remove dirt and impurities; secondly, soaking the washed aquatic product in sub-acid electrolysed water or stirring for sterilization; placing the sterilized aquatic product in a foam preservation box and covering the sterilized aquatic product with preservation ice; and finally sealing the box. By using the method, the spoilage caused by microorganism pollution can be effectively restrained and the shelf life of the aquatic product can be prolonged; the preservation ice can be used for lowering the temperature and slowing down a series of biochemical reactions of the aquatic product; the water formed by melted ice during storage and transportation can play a further sterilization role; the sub-acid electrolysed water has a broad spectrum and high-efficient sterilization effect and especially can be reduced to water after reacting with organic matters; compared with the current other sterilizing agents, the sub-acid electrolysed water is safe without residues and is friendly to human bodies and environments; and the sub-acid electrolysed water is moderate in reacting functions and hardly has influences to the quality of meat. The method is not only applicable to preservation of fresh foods such as fish, shrimps and shellfish, but also applicable to the preservation field of meat products.

The invention relates to preparation and application of a nitrogen-doped carbon nanotube nickel-iron coated oxygen evolution catalytic material for water electrolysis. A general formula of the composite electrode material is Ni0.9Fe0.1@CNx, wherein CN is nitrogen-doped carbon, and x is greater than or equal to 0.01 and less than or equal to 0.1. The specific preparation method of the catalytic material comprises the steps of uniformly mixing nickel acetate and ferric chloride with citric acid and thiourea according to certain molar percentages, and then carrying out calcinations for 1-10h under an N2 gas flow rate of 10-100 mL/min at 600-900 DEG C to prepare the catalytic material. The preparation method provided by the invention effectively achieves one-step preparation of the Ni0.9Fe0.1@CNx oxygen evolution catalytic material with set ratios of Ni, Fe, C and N by an in-situ solid-phase method, and the product is nanotube-shaped, porous and large in specific surface area, and has excellent performance when being used as an oxygen evolution electrode material for water electrolysis. The method provided by the invention is convenient to operate, the process is simple and easy to control, raw materials are low in price and easy to obtain, and the catalytic material is suitable for large-scale production.

There is disclosed a cleaning device for a heat exchanger which safely and effectively cleans the heat exchanger and which can sufficiently obtain a deodorizing effect and a sterilization effect. The cleaning device for the heat exchanger includes an electrolysis unit for treating dew condensation water of the heat exchanger by an electrochemical technique, a supply unit for supplying electrolytic water produced by the treatment performed by this electrolysis unit to an outer surface of the heat exchanger, and an control unit for controlling the electrolysis unit and the supply unit, and the control unit allows the electrolysis unit to electrolytically treat the dew condensation water of the heat exchanger and produce the electrolytic water, and allows the supply unit to supply the produced electrolytic water to the outer surface of the heat exchanger.

The invention discloses a porous electrode material with three metal Cu-Co-Mo/foamed nickel and a preparation method and application of the porous electrode material. The method includes the steps that (1) greasy dirt and an oxide layer on the surface of foamed nickel are removed through an organic solution and acid; (2) a copper-cobalt-molybdenum salt compound precursor and the foamed nickel areput in an autoclave for sealed reaction, then washing and drying are performed, and foamed nickel of which the surface is grown with a hydro-thermal synthetic product; and (3) the foamed nickel obtained in the step (2) is subjected to high-temperature calcination under the H2 atmosphere, then natural cooling is performed, and a porous electrolysed water catalyst with the three metal Cu-Co-Mo/foamed nickel. The binding force between the three metal alloy and the substrate nickel in the composite material is high, the properties are stable under the alkaline conditions, the electrochemical active area is large, and the catalytic activity of the material is greatly improved; and through the preparation method, combination of the three metals with the foamed nickel substrate is achieved through a solvothermal method, the preparation is simple, the sintering temperature is low, the energy consumption during preparation is low, and the industrial production is facilitated.

The invention discloses alkaline electrolyzed water, a preparation method of the alkaline electrolyzed water and application of the alkaline electrolyzed water to agriculture. The process comprises the following steps: (1) enabling pure water to enter from the bottom of an electrolytic tank through a pure water conveying pipeline, injecting a saline-alkaline solution from the bottom of the electrolytic tank, and mixing an electrolyte into pure water for electrolysis; (2) sending alkaline electrolyzed water, generated on the cathode side of an ion film, to a strong alkaline electrolyzed water storage tank, and sending acidic electrolyzed water, generated on the anode side of the ion film, to a saline-alkaline tank, wherein solid KOH or K2CO3 is dissolved into a saturate saline-alkaline solution through slightly acid electrolyzed water to be provided for the electrolytic tank, and the alkaline electrolyzed water is circularly electrolyzed in the electrolytic tank; (3) when the pH value of strong alkaline electrolyzed water reaches 13 or above through electrolysis, finally supplying strong alkaline electrolyzed water for equipment and a production line through a strong alkaline electrolyzed water outlet. According to the invention, the extreme alkaline electrolyzed water with the pH value of 13.8 can be produced, and can be used for pesticide preparation processing, farmland sterilization, soil improvement, soil disinfection and sanitation environment disinfection, pesticide residue degradation and fruit preservation.

Electrolyzed water producing method and apparatus are provided which are capable of producing electrolyzed water having a desired property irrespective of the quality of raw water supplied and the like while allowing the size and weight of the apparatus and the cost to be reduced by limiting the capacity of an electrolysis power source. The electrolyzed water producing method includes: circulating an aqueous electrolyte solution to a first electrolytic chamber of a pair of electrolytic chambers opposed to each other across an intervening ion permeable diaphragm while supplying raw water to the second electrolytic chamber; and applying a predetermined voltage to a pair of electrodes disposed in the respective electrolytic chambers with the diaphragm intervening there between, to electrolyze the raw water and the aqueous electrolyte solution, thereby producing electrolyzed water in the second electrolytic chamber.

The invention discloses a preparation method of a nitrogen-doped carbon-coated Co-based MOF derivative material, which comprises the following steps: preparing a metal organic framework compound ZIF-67, dissolving cobalt nitrate and methylimidazole in water in a reaction kettle, reacting at 150-200 DEG C for 2h, and cooling to obtain a metal organic framework compound ZIF-67; preparing a solid mixture: dissolving the metal organic framework compound ZIF-67, polyvinylpyrrolidone and melamine in water to obtain a mixed solution, freeze-drying that mixed solution to obtain the solid mixture; preparing the nitrogen-doped carbon-coated Co-based MOF derivative material: placing the solid mixture in a furnace, purging with argon, calcining at 800-1000 DEG C for 2 h, and cooling to obtain the nitrogen-doped carbon-coated Co-based MOF derivative material. In the process of preparation, the raw materials are easy to obtain and the synthetic route is simple, and the derived materials have good catalytic effect in both anodic and cathodic reactions during the process of electrolyzing water.

In an apparatus for producing acidic electrolyzed water, the use of a protection membrane having slits or other discontinuities allows the protection of a permeable membrane, such as an anion-permeable or anion-selective membrane, from chlorine generated by the electrolysis. The protection membrane further preserves the electrical conductivity of the membrane and electrode assembly, because of a venting action of trapped gas and fluid through the slits. The protection membrane is useful both in three chambered electrolyzers and in two chambered electrolyzers. The preferred protection membrane has slits formed by overlapping strips of fabric or the like. The preferred fabric is a non-woven fabric.

The invention discloses a preparation method of a MOF-guided nickel-cobalt bimetallic phosphide. The preparation method comprises the steps: fully dissolving 1,4-terephthalic acid in a mixed solutionof ethanol, deionized water and DMF, adding NiCl2.6H2O and CoCl2.6H2O, adding ethanolamine, magnetically stirring, and carrying out ultrasonic dispersion, washing and vacuum drying under sealed conditions to obtain a nickel-cobalt bimetallic material marked as Ni1Co1-BDC; in an Ar atmosphere, calcining Ni1Co1-BDC and NaH2PO2.H2O at the temperature of 280-320 DEG C for 1-2 h, cooling to room temperature, washing, and carrying out vacuum drying to obtain the nickel-cobalt bimetallic phosphide marked as Ni1Co1-P. Ni1Co1-P is used as an electrocatalyst for water electrolysis oxygen evolution reaction, and Ni1Co1-P shows excellent electrocatalytic performance and stability in the oxygen evolution reaction process due to a unique layered porous structure, an ultrathin carbon film and the synergistic effect of high-activity nickel and cobalt.