Journal
SCIENCE CHINA-MATERIALS
Volume 63, Issue 10, Pages 2040-2049Publisher
SCIENCE PRESS
DOI: 10.1007/s40843-020-1350-7
Keywords
PdPb nanowires; electronic structure; lattice defects; electrocatalysis; ethanol electrooxidation
Categories
Funding
- National Natural Science Foundation of China [21773133]
- Taishan Scholars Advantageous and Distinctive Discipline Program
Ask authors/readers for more resources
Less-expensive but efficient electrocatalysts are essential to accelerate the commercialization of fuel cells. Herein, ultrathin PdPb nanowires (PdPb NWs) with a diameter of around 3.5 nm were prepared by using a one-step hydrothermal method. The introduction of Pb in Pd-based bimetallic nanostructures produced high differences in the morphology from Pd nanoparticles (NPs) to various PdPb NWs. All the as-prepared PdPb NWs exhibited better electrocatalytic activity and durability than Pd NPs due to the synergistic effect. Especially, Pd(65)Pb(35)possessed the highest current density of about 3460 mA mg(Pd)(-1)for the ethanol electrooxidation which was around 6.3 times higher than commercial Pd/C. The high-performance of Pd(65)Pb(35)is attributed to the defect-rich and stable nanowire structure with optimized surface atomic arrangement, as evidenced by high resolution transmission electron microscopy measurements and long-time treatment in an acidic media. The differences in the morphologies and electrocatalytic activities of PdPb NWs with varied Pb contents have also been discussed and analyzed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available