▎ 摘　　要

NOVELTY - Nano-palladium alloy catalyst comprises nano-alloy or nano-alloy carrier composition material. The nano-alloy comprises palladium and other metals. USE - The catalyst is useful for electro-catalytic reduction of carbon dioxide and formic acid or formate reaction, generating formic acid or formate by electrocatalytic reduction of carbon dioxide, promoting activity and stability of formic acid reaction by electrocatalytic reduction of carbon dioxide. ADVANTAGE - The catalyst has high activity, high selectivity, and highly stably realizes electrocatalysis of carbon dioxide reduction preparation acid, relieves energy and environment problem, and realizes the effecient utilization of carbon resource. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: 1. preparation method of nano palladium alloy catalyst for electro-catalytic reduction of carbon dioxide; 2. electrocatalytic reduction of carbon dioxide; and 3. electrolytic cell for electro-catalytic reduction of carbon dioxide.