Effect of urea and ammonium fluoride ratio on CuCo2S4/NF as a highly efficient HER catalyst

This research is to use hydrothermal method to synthesize several CuCo 2 S 4 /NF and CuCo 2 O 4 /NF catalysts. The influence of urea and NH 4 F ratio on the microstructure and HER catalytic activity of CuCo 2 S 4 /NF catalyst has been discussed in detail.