Charge transfer 4 Charge transfer resistance Electrochemical impedance spectroscopy 4 Electrodes 4 Hydrogen 4 Acetophenone 2 Acetophenones 2 Alloys 2 Anode active materials 2 Batteries 2 Benzophenone 2 Concentration dependence 2 Concentration levels 2 Diffraction patterns 2 Diffusion 2 Dynamic response 2 Electric discharges 2 Electrocatalysis 2 Electrocatalytic hydrogenation 2 Electrolysis 2 Exchange current densities 2 Gas adsorption 2 Hydrides 2 Hydrogen diffusion coefficients 2 Hydrogen storage 2 Hydrogenation 2 Impedance spectrum 2 Ketones 2 Langmuir adsorption isotherms 2 Manganese 2