framework (Cu/N-C) was synthesized via the carbonization of Cu(acac)2@ZIF-8 . Cu/N-C served as an excellent electrocatalyst for electrocarboxylation of styrene with CO2. It contains two different valence states of Cu + and Cu 2+ , offering a higher charge density. The electron-rich singleatomic Cu sites exhibited effective activation of CO2 into CO2 -that attack styrene to produce phenyl succinic acid (Figure ). Cu/N-C offered high Faradaic efficiency, good selectivity, and a high production rate of 92%, 100%, 216 mg•cm -2 •h -1 , respectively .