Figure 1
From: Hierarchical CO2-protective shell for highly efficient oxygen reduction reaction
Schamatic of preparation of the hierarchical LN shell protected BSCF cathode.
(a) A two-step infiltration process is empolyed to introduce porous LN precursor shell onto the surface of BSCF scaffold and followed by microwave plasma treatment to obtain hierarcical LN shell. (b) In the 1st infiltration of the two-step infiltration process, La(NO3)3 and Ni(NO3)2 aqueous solution is infiltrated into BSCF scaffold. The LN substrate shell is obtained after heating at 850°C for 5 h. In order to obtained hierarcical LN precursor shell, ctrate added La(NO3)3 and Ni(NO3)2 aqueous is inflitrated and fired at 850°C for 5 h. Here the ctrate is used as the template to obtain bigger pores in the second LN shell. Finally, the microwave-plasma is used to heat the precurosr shell to make hierarchical LN shell.
