Electrochemical-catalytic converter for exhaust emission control

The present invention discloses an electrochemical-catalytic converter, which can remove nitrogen oxides (NO), carbon monoxide (CO), hydrocarbons (HCs) and particulate matter (PM) in exhaust gas. The electrochemical-catalytic converter comprises a cell module (10), wherein nitrogen oxides are decomposed to form nitrogen through electrochemical promotion, and wherein carbon monoxide, hydrocarbons and particulate matter are catalyzed to form carbon dioxide and water by an oxidation catalyst.