Experimental data of a hydrogen-producing biocathode to the responses of applied potential and reactants in a microbial electrolysis cell

Results (hydrogen production, current density, electrochemical property (CVs), pH, conductivity and cathode recovery) from the responses of the biocathode to applied potentials, sulphate and bicarbonate concentrations are included. The results also included the data from the biocathode enrichment process and series of important tests in order to confirm the biocathode was dominated by hydrogen-producing microorganisms. Besides, the evidences that show the effects of low potential, mass transport limitation and long term operation are also included in the data.