ELECTRODE AND CELL FOR IN SITU ELECTROCHEMICAL AND ELECTRON PARAMAGNETIC RESONANCE MEASUREMENTS

Embodiments of the present disclosure describe an electrochemical-electron paramagnetic resonance (EC-EPR) cell comprising a flat cell member positioned between a top capillary member and a bottom capillary member; a working electrode including a metal wire section configured to be housed within the top capillary member, and a flat metal section attached to the metal wire section; and a reference electrode and counter electrode configured to be housed within the top capillary member; wherein the flat metal section is dimensioned to be inserted, along with a catalyst and electrolyte, into the flat cell member; wherein the flat cell member is configured to orient the flat metal section of the working electrode and catalyst in a region of an electron paramagnetic resonance cavity in which a magnetic component of a microwave field is a maximum.