Electrochemical Measurements at High Pressure

Success in high-pressure electrochemical measurements depends largely on having clean, reproducible working electrode surfaces, which are therefore polished with fine alumina and sonicated in clean solvent before assembly of the electrochemical cell. Before a sequence of measurements at each pressure, the electrodes are cleaned electrochemically by cycling the applied potential several hundred mV either side of the potential of the couple of interest (preferably to the point of hydrogen evolution, in aqueous media). 

Electrode potentials relative to the particular reference electrode are conveniently measured as the half-wave potential 1/2 in cyclic voltammetry (CV) [15,16, 20, 24, 36-48] or cyclic staircase voltammetry [49-51], or by differential pulse voltamme- 

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