Electrocatalytic addition reaction of bromide compounds and activated olefins was studied using a nickel(II) tetraazamacrocyclic complex-modified graphite felt (GF) electrode. The modified GF electrode was observed a catalytic current in the presence of bromide compound by cyclic voltammetry. A preparative electrocatalytic addition reaction of bromide compounds and activated olefins was successfully achieved on the modified GF electrode with an adequate yield (24-82%) and turnover number of the nickel catalyst (983-1533). (c) 2006 Elsevier Ltd. All rights reserved.