Method of taking carbon-modified and palladium-loaded cosmetic cotton as cathode material of H2O2 based fuel cell

Abstract

The invention provides a method of taking carbon-modified and palladium-loaded cosmetic cotton as the cathode material of a H2O2 based fuel cell. The method comprises following steps: washing cosmetic cotton for a plurality of times with acetone and ethanol, drying for 10 to 15 hours at the temperature of 110 to 130 DEG C, dissolving 100 to 150 mg of carbon and 500 mg of sodium dodecyl benzene sulfonate into 50 mL of distilled water, subjecting the liquid to an ultrasonic treatment for 10 to 15 hours to obtain suspension liquid, soaking the cleaned cosmetic cotton in the suspension liquid, allowing to stand still for 30 seconds, drying for 2 hours at the temperature of 110 to 130 DEG C, washing with distilled water, drying for 2 to 4 hours at the temperature of 110 to 130 DEG C, taking a mixed solution of NaPdCl4 with a concentration of 0.6 mol / dm<-3>, and NaCl with a concentration of 0.06 mol / dm<-3> as the electro-deposition liquid, and subjecting the cosmetic cotton to an electro-deposition treatment for 4 to 6 hours with a current intensity of 5 to 15 mA / cm<-2> so as to obtain carbon-modified and palladium-loaded cosmetic cotton. The carbon-modified and palladium-loaded cosmetic cotton can be used as a catalyst for direct electric reduction of H2O2. The method has the advantages of abundant and available active carbon and cosmetic cotton sources, low cost, high utilization rate of Pd, large specific surface area and good conductivity of carrier, no use of binding agent and conductive agent, high catalytic activity, and stable performance.

Description

technical field [0001] What the present invention relates to is a kind of H 2 o 2 Preparation method of fuel cell cathode material. Background technique [0002] In recent years, with the further aggravation of the energy crisis, as a new type of efficient and clean energy conversion device, fuel cells have attracted more and more attention. Among them, H 2 o 2 The fuel cell as an oxidant has the advantages of high electrochemical activity, easy storage, transportation and operation, and can replace O 2 , especially in several representative low-temperature fuel cells has become a current research hotspot. [0003] h 2 o 2 The catalytic performance of electroreduction is an important factor directly related to the performance of fuel cells. Therefore, the preparation of high-performance catalysts is to improve the H 2 o 2 The oxidant is critical for fuel cell performance. in several H 2 o 2 Among electroreduction catalysts (noble metals, transition metal oxides,...

AI Technical Summary

Problems solved by technology

h 2 o 2 The main problem of direct electroreduction is that H 2 o 2 The electroreduction activity is not high, and the direct electroreduction reaction is shown in formula (1):