Method for preparing ferrate through electrolysis of non-noble metal catalyzed gas diffusion electrode

[0044] Example

[0045] 1. Fe-N-C catalyst preparation

[0046] 1. Add 1 g of dicyandiamide to 20 ml of deionized water and stir at 80°C until it is completely dissolved;

[0047] 2. Add 0.1 g anhydrous FeCl 3 , Stir to dissolve;

[0048] 3. Add 0.1 g of carbon black, stir for 4 hours, dry and grind to make a precursor;

[0049] 4. The precursor was calcined in an argon atmosphere at 550°C for 3 hours, heated at 750°C for 1 hour, cooled to room temperature with the furnace, and ground to obtain Fe-N-C catalyst.

[0050] The obtained Fe-N-C catalyst scanning electron micrograph is as follows figure 1 As shown, the catalyst is uniform nanoparticles. Use Shanghai Chenhua CH660 electrochemical workstation to test the linear sweep voltammetry curve of Fe-NC catalyst in a KOH solution saturated with oxygen at a concentration of 0.1 mol / L, and test commercial Pt containing 20 wt% Pt under the same conditions / C catalyst linear sweep voltammetry curve, such as figure 2 Shown. It can be seen