Department of Chemistry

Department of Chemistry University of Oxford

Nearly Electrolyte-Free Voltammetry

Nearly Electrolyte-Free Voltammetry

Researchers in the Compton Group have developed a simple and efficient way to prepare ultra-low conductivity water for use in electrochemical experiments. CO2 dissolution in water has a large impact on its conductivity - within tens of seconds after leaving a water purifier, conductivity increases substantially due to CO2 absorption from the atmosphere. The Compton Group researchers removed the CO2 using ion exchange resin beads to prepare aqueous media with very low conductivity, allowing a wider potential window to be studied. This method provides a platform for fundamental studies on, for example, the electrical double layer structure, conductivity mechanisms, water behavior at interfaces, and under high electric fields. more........