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)

Dr. Sanmitra Barman

Associate Professor

sanmitra.barman@bmu.edu.in

In this research, we are reporting the alkaline hydrogen evolution reaction (HER) activity with the Bi₂Mn₄O₁₀ electrocatalyst. To boost the HER activity, we have also synthesised cobalt (5 atomic%) doped Bi₂Mn₄O₁₀ electrocatalyst. Our results revealed that the cobalt doped Bi₂Mn₄O₁₀ is acting as the electro(pre)catalyst during the alkaline HER and transforming into the Mn and Co doped Bi₂O₃ 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.