Ultralow-temperature assisted synthesis of single platinum atoms anchored on carbon nanotubes for efficiently electrocatalytic acidic hydrogen evolution

• 来源期刊: 能源化学
• 年，卷（期）: 2020,（12）
• 页码范围: 280-284
• 页数: 5页
• 语种: 英文

摘要

Although platinum(Pt)is highly active for hydrogen evolution reaction(HER)[1],it is crucial to explore the effective approach for minimizing the Pt loading amount in the practical application.Herein,one ultralow-temperature solution reduction approach is developed to anchor atomically dispersed Pt atoms on carbon nanotubes(Pt-CNTs),which decelerates the diffusion rate of PtCI62-ion reached onto the car-bon nanotubes and lowers the free energy of Pt atoms in the solution to reduce the probability of the Pt aggregation.The obtained Pt-CNTs exhibits a low overpotential of 41 mV@10 mA cm-2 for HER in acidic media.The calculation results revealed that the improvement of the electrocatalytic activity is contributed by the interaction between CNTs and Pt atoms,which descreases the the Pt d band cneter referred to the Fermi level and lowers the Gibbs free energy of H* adsorption.This work may provide one easy and convenient strategy for the large-scale use of Pt catalysts in practical applications