Air Active Diffusion Hydrogen Peroxide Electrochemical Generator

Abstract

The invention provides an air active diffusion type hydrogen peroxide electrochemical generating device, which has the characteristics of high efficiency and energy saving. The device has a simple structure and low-cost electrode materials. Its main feature is that one side of the three-phase superhydrophobic cathode is connected to the air, and the other side is in contact with the electrolyte solution. efficient mass transfer of oxygen. Compared with the traditional device, the new hydrogen peroxide generating device saves the gas blowing equipment, can reduce the power consumption by more than 65%, and can realize the efficient preparation of hydrogen peroxide in a wide range of current density.

Description

technical field [0001] The present invention relates to environment, energy field, specifically, the present invention relates to the construction of novel air active diffusion hydrogen peroxide generating device and the preparation method of three-phase superhydrophobic cathode. Background technique [0002] Hydrogen peroxide is one of the 100 most important chemicals in the world due to its huge demand. Hydrogen peroxide is not only a green strong oxidant, but also a potential energy carrier, which has been widely used in chemical, energy and environmental protection industries. Therefore, efficient and low-consumption hydrogen peroxide production methods are very important. At present, the main method for preparing hydrogen peroxide is the anthraquinone oxidation method. However, this method has many disadvantages such as complicated steps, high cost, serious pollution, etc., and the transportation and storage of hydrogen peroxide will increase the cost and operational ri...

AI Technical Summary

Problems solved by technology

However, in the current electrocatalytic system, the oxygen reduction reaction is limited by the low oxygen mass transfer efficiency and oxygen conversion efficiency, and the production of hydrogen peroxide is generally low.

At the same time, most hydrogen peroxide generators need additional air compression equipment to provide additional oxygen, which not only increases the complexity of the device, but also greatly increases the operating cost, resulting in energy waste

The current gas diffusion electrode (GDE) has high preparation cost, small oxygen diffusion coefficient, low oxygen conversion rate (less than 1%), and low hydrogen peroxide yield under high current density conditions (80mA / cm 2 , the yield had dropped significantly, and only reached 32.51mg / cm2 after 2h 2 , is 50% of the yield of the device of the present invention)

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