Journal
ACS APPLIED ENERGY MATERIALS
Volume 1, Issue 7, Pages 3323-3330Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.8b00523
Keywords
hollow microparticle; mesoporous nanoshell; palladium copper alloy; direct methanol fuel cells; electrocatalysis
Funding
- National Natural Science Foundation of China [21203236]
- Guangdong Department of Science and Technology [2017A050501052]
- Shenzhen research plan [JCYJ20160229195455154]
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Novel bowl-like, apple-like, and spherical PdCu alloy hollow microparticles with mesoporous nanoshells are synthesized through a simple disproportionation reaction route using a spherical Cu2O template with increasing H2PdCl4 ratio. The diameter of hollow particles is about 1 mu m, and the thickness of mesoporous shells is about 50 nm. The obtained bowl-like PdCu alloy hollow microparticles with mesoporous nanoshells exhibit the highest electrocatalytic activity among the apple-like and spherical PdCu hollow microparticles and commercial Pd/C electrocatalysts toward methanol anodic oxidation for fuel cells. The remarkably excellent electrocatalytic performance of bowl-like PdCu alloy electrocatalysts might be attributed to the unique bowl-like hollow architecture with highly mesoporous nanoshells which are constructed by self-supported PdCu nanoparticles. The strategy presented here might help pave the way for the synthesis of novel nano-/microcomplex hollow materials with mesoporous nanoshells.
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