Preparation method for W18O49 self-supporting electrode material grown on carbon cloth surface in situ

Abstract

The invention provides a preparation method for a W18O49 self-supporting electrode material grown on a carbon cloth surface in situ. The method comprises the following steps: adding an analytically-pure tungsten source into a mixed alcohol to obtain a solution A, and adding analytically-pure ethylenediamine and citric acid into the solution A to obtain a solution B; pouring the solution B into a polytetrafluoroethylene-lined high-pressure reaction kettle, and placing a carbon cloth into the polytetrafluoroethylene reaction kettle; placing the sealed reaction kettle into a homogeneous hydrothermal reactor, and performing a hydrothermal reaction; and performing centrifugal washing on the final reactant by using absolute ethanol, and drying the centrifugal washed material to obtain the W18O49self-supporting electrode material grown on the surface of the carbon cloth in situ. According to the method provided by the invention, the carbon cloth has high abundance, a lower price, a larger specific surface area, higher electron conductivity and an ideal 3D open-hole structure; and the method prepares the W18O49 / carbon cloth nano material with better electrocatalytic performance by using the carbon cloth as a supporting material and using a solvothermal method to grow W18O49 on the supporting body in situ.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a carbon cloth surface in-situ growth W 18 o 49 Preparation method of self-supporting electrode material. Background technique [0002] Energy is an important basis for human survival and a driving force for national economic and social development. With the rapid development of the global economy and the rapid increase in population, non-renewable fossil fuels (oil, coal, natural gas, etc.) have been over-consumed and almost exhausted. And its combustion process will produce carbon dioxide, sulfur dioxide and nitrogen oxides and other gases. These gases can cause adverse consequences such as the greenhouse effect and acid rain, and their impact on the environment and climate is becoming more and more serious. Therefore, people are eager to find new ways to solve the current energy and environmental problems. Electrochemical electrolysis of water has been recognize...

AI Technical Summary

Problems solved by technology

However, the use of two different catalysts in the electrolyzer as the hydrogen-producing and oxygen-producing working electrodes usually needs to solve problems such as the mismatch of pH range and auxiliary equipment, which greatly reduces the overall performance of the electrolytic cell.

In addition, many studies have shown that non-precious metal-based electrocatalytic materials for HER have better catalytic activity and stability in acidic electrolytes than in alkaline electrolytes, which is not conducive to large-scale industrial production.

Images