36results about How to "Improve electrode activity" patented technology

The invention relates to a preparation method of a high-performance electrode material used for high-concentration ratio operation of circulating water. The steps are as follows: disperse and suspend graphite powder in deionized water; add multi-wall carbon nanotubes; prepare the required solution; 2 solution and ReCl 2 The solution was dropped into the mixture; then PtCl was added dropwise 4 solution; add NaOH solution to the mixture until the pH reaches 9; add ammonia water to the mixture until the pH reaches 10, and cool the mixture to room temperature to clarify; suck out the supernatant and wash the reaction product until the pH of the eluate drops to 7.5; Add deionized water to the reaction product and stir; add the prepared NaBH to the mixture 4 solution, and the mixture is cooled to room temperature for clarification; the mixture is suction filtered; the filter cake is placed in an oven to dry; high-performance electrode materials are obtained, which can be formed by pressing. High-performance electrode materials are used for circulating water treatment, which can ensure the low-cost and high-concentration ratio operation of the circulating water system.

The invention discloses a liquid cathode, which is composed of a hydrophobic functionalized ionic liquid, a conductive electrode and a hydrophilic PVC solid support film. The hydrophobic functionalized ionic liquid is filled in a bag made of the hydrophilic PVC solid support film Then, the conductive electrode is placed in it to make a liquid cathode; the electrode preparation method is simple, the electrode specific surface area is large, the capacitance is large, and the physical adsorption, chemical adsorption, and electrosorption are organically coupled, which is not only suitable for high-concentration heavy metal wastewater. It is also suitable for the advanced treatment of several ppm low-concentration heavy metal ion wastewater in water; it solves the problems of low current density, inability to efficiently transfer mass, low electrolysis efficiency and high power consumption when conventional electrodes electrolyze low-concentration heavy metal wastewater.

The invention relates to a metal electrode activation method for an oxygen-metal battery. By forcedly oxidizing a substrate, the volume of the substrate is expanded, and the stress is increased to lead the substrate to peel off. According to the metal electrode activation method, oxygen content in an electrolyte is increased by increasing oxygen partial pressure on an electrolyte level, oxygenating microbubbles and through stirring and oxygenating modes; oxygen is diffused and penetrates through a compact oxygen membrane of a metal electrode under the driving of oxygen concentration and fluid pressure of the electrolyte, enters the oxygen membrane and is combined with metal to generate an oxide, the volume of the metal after combined with the oxygen through diffusion is expanded, the hard and brittle oxygen membrane is broken and peeled off due to stress, and the metal substrate is exposed, therefore, the purpose of metal electrode activation before battery discharging is achieved.