Details

Autor(en) / Beteiligte

• Huang, Hui‐Zi
• Liu, Di
• Chen, Li‐Wei
• Zhu, Zhejiaji
• Li, Jiani
• Yu, Zi‐Long
• Su, Xin
• Jing, Xiaoting
• Wu, Si‐Qian
• Tian, Wenjing
• Yin, An‐Xiang

Titel

Ultrathin Dendritic Pd‐Ag Nanoplates for Efficient and Durable Electrocatalytic Reduction of CO2 to Formate

Ist Teil von

• Chemistry, an Asian journal, 2023-05, Vol.18 (9), p.e202300110-n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2023

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• CO2 reduction reactions (CO2RR) powered by renewable electricity can directly convert CO2 to hydrocarbons and fix the sustainable but intermittent energy (e. g., sunlight, wind, etc.) in stable and portable chemical fuels. Advanced catalysts boosting CO2RR with high activity, selectivity, and durability at low overpotentials are of great importance but still elusive. Here, we report that the ultrathin Pd‐Ag dendritic nanoplates (PdAg DNPs) exhibited boosted activity, selectivity, and stability for producing formate from CO2 at a very low overpotential in aqueous solutions under ambient conditions. As a result, the PdAg DNPs exhibited a Faradaic efficiency (FE) for formate of 91% and a cathodic energy efficiency (EE) of ∼90% at the potential of −0.2 V versus reversible hydrogen electrode (vs. RHE), showing significantly enhanced durability as compared with pure Pd catalysts. Our strategy represents a rational catalyst design by engineering the surface geometrical and electronic structures of metal nanocrystals and may find more applicability in future electrocatalysis. Dendritic structures can enhance the activity of CO2 electroreduction, while alloying effect can improve the anti‐CO‐poisoning capability of Pd. Ultrathin Pd‐Ag dendritic nanoplates with modified surface geometric and electronic structures of Pd can promote the electroreduction of CO2 effectively at low overpotentials, realizing high‐energy‐efficiency CO2‐to‐formate conversion compared with pure Pd nanodendrites and Pd nanoparticles.