Stabilization of Cu/Ni Alloy Nanoparticles with Graphdiyne Enabling Efficient CO2 Reduction

• DOI: 10.1007/s40242-021-1344-7
• Publication Date: 2021-12-01T07:00:52Z
• Authors: Xinliang Fu; Aonan Zhu; Xiaojie Chen; Shifu Zhang; Mei Wang; Mingjian Yuan
• Keywords: 01 natural sciences; 7. Clean energy; 0104 chemical sciences

Electrocatalysis has become an attractive strategy for the artificial reduction of CO2 to high-value chemicals. However, the design and development of highly selective and stable non-noble metal electrocatalysts that convert CO2 to CO are still a challenge. As a new type of two-dimensional carbon material, graphdiyne(GDY), is rarely used to explore the application in carbon dioxide reduction reaction(CO2RR). Therefore, we tried to use GDY as a substrate to stabilize the copper-nickel alloy nanoparticles(NPs) to synthesize Cu/Ni@GDY. Cu/Ni@GDY requires an overpotential (−0.61 V) to 10 mA/cm2 for the formation of CO, and it shows better activity than Au and Ag, achieving a higher Faraday efficiency of about 95.2% and high stability of about 26 h at an overpotential (−0.70 V). The electronic interaction between GDY substrate and Cu/Ni alloy NPs and the large specific surface area of GDY is responsible for the high performance.