Method for producing hydrogen by electrolysis of water: direct current passes through an electrolytic cell filled with potassium hydroxide or sodium hydroxide, and the water molecules undergo an electrochemical reaction on the electrodes and decompose into hydrogen and oxygen.
Water electrolysis is a chemical experiment that uses water decomposition and synthesis experiments to understand that water is composed of hydrogen and oxygen. The principle is that water can be broken down into hydrogen and oxygen under the action of a direct current. When an electric spark passes through a mixture of hydrogen and oxygen, they combine to form water. The two experiments show that water is made up of two elements, hydrogen and oxygen. From the experimental results, we can also know that their volume ratio is 2:1.
Extension: the hydrogen production device by electrWater olysis includes Hoffman electrolyzer, DC power supply (or lead acid battery), wires, test tubes, alcohol lamps, gas lines, induction coils, electric wrenches, iron supports, iron. tongs, gas storage bottles, glass sinks, etc. Electrolysis of water to produce 1 kilogram of hydrogen consumes approximately 56 kilowatt hours of electricity. The cost of producing hydrogen by hydrolysis therefore depends on the price of electricity. The calorific value of 2.1 kilograms of hydrogen is equivalent to approximately 33 kWh (kWh) of electricity. The power generation efficiency of hydrogen fuel cells is typically between 40% and 60%.
“The electrolysis of water to produce hydrogen requires a large amount of electricity. Currently, each kilogram of hydrogen produced by electrolysis of water to produce hydrogen consumes 56 kilowatt hours of electricity. must continue to rereduce costs. "In Li Yizhong It seems that the key to transforming "gray hydrogen" into "blue hydrogen" is the capture, storage and utilization of carbon dioxide, and we should intensify the research, development and 'industrialization.
Yes, water is a very stable compound, so it's a scam.
Currently, there is no stable and inexpensive catalyst for electrolyzing water. The common commercial catalyst is iridium dioxide, a precious and very expensive metal. Currently available commercially are hydrogen fuel cells, in which hydrogen and oxygen are placed at both ends of the anode and cathode, respectively. Hydrogen protons enter the holes in the proton exchange membrane (PEM) and combine with oxygen molecules, as well as redox. The reaction occurs under the action of the catalyst and the electrons blocked outside ofThe membrane must bypass both ends of the electrode plate, thereby generating current to drive the motor.