Evolution of Co-doped Bi2O3-Bi2Mn4O10 composite electrocatalyst from the mullite-type Co-doped Bi2Mn4O10 electro(pre)catalyst during the alkaline hydrogen evolution reaction (HER)
Green hydrogen production by electrocatalytic water splitting In this research, we are reporting the alkaline hydrogen evolution reaction (HER) activity with the Bi 2 Mn 4 O 10 electrocatalyst. To boost the HER activity, we have also synthesized cobalt (5 atomic%) doped Bi 2 Mn 4 O 10 electrocatalyst. Our results revealed that the cobalt doped Bi 2 Mn 4 O 10 is acting as the electro(pre)catalyst during the alkaline HER and transforming into the Mn and Co doped Bi 2 O 3 electrocatalyst with time. We believe that this work will enhance the scientific understanding of the mullite type crystal structure with bismuth and manganese in the A and B-sites respectively for their electrocatalytic activities in the alkaline medium.
