▎ 摘　　要

NOVELTY - A nickel single atom-nitrogen doped carbon nano catalyst comprises nitrogen-doped carbon and nickel atom loaded on carbon material surface. The nitrogen doped carbon comprises nitrogen doped activated carbon black, nitrogen-doped graphite powder, nitrogen-doped graphene nano-tube, and nitrogen-doped carbon nano-tube. USE - The catalyst is useful in reaction of electrocatalytic conversion of flue gas to carbon monoxide (claimed). ADVANTAGE - The nickel single atom doped nitrogen doped carbon nano catalyst has high catalytic activity and selectivity in catalytic flue gas electric reduction reaction to prepare carbon monoxide. In the low-concentration carbon dioxide raw material gas of the simulated flue-gas component, it also keeps high activity and high selectivity, it is expected to be applied to high-efficiency conversion of carbon dioxide gas in flue gases. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the preparation method of nickel single atom-nitrogen doped carbon nano catalyst.