Electrochemical reaction outcomes controlled by customised AC waveforms

Programmed alternating currents allow researchers to choose between reaction mechanisms with the flick of a switch

A new electrochemical method can form different products depending on the shape of the electrical signal. By tailoring various waveform parameters, researchers in China directed a catalytic reaction to yield either a cross-coupling or difunctionalisation product with complete selectivity, dubbing the new approach ‘programmed alternating current (AC) electrosynthesis’.