Ultrathin PdAuBiTe Nanosheets as High-Performance Oxygen Reduction Catalysts for a Direct Methanol Fuel Cell Device.
Fengling ZhaoLirong ZhengQiang YuanXiaotong YangQinghua ZhangHan XuYuanlong GuoSong YangZhiyou ZhouLin GuXun WangPublished in: Advanced materials (Deerfield Beach, Fla.) (2021)
Ultrathin 2D metal nanostructures have sparked a lot of research interest because of their improved electrocatalytic properties for fuel cells. So far, no effective technique for preparing ultrathin 2D Pd-based metal nanostructures with more than three compositions has been published. Herein, a new visible-light-induced template technique for producing PdAuBiTe alloyed 2D ultrathin nanosheets is developed. The mass activity of the PdAuBiTe nanosheets against the oxygen reduction reaction (ORR) is 2.48 A mgPd -1 , which is 27.5/17.7 times that of industrial Pd/C/Pt/C, respectively. After 10 000 potential cyclings, there is no decrease in ORR activity. The PdAuBiTe nanosheets exhibit high methanol tolerance and in situ anti-CO poisoning properties. The PdAuBiTe nanosheets, as cathode electrocatalysts in direct methanol fuel cells, can thus give significant improvement in terms of power density and durability. In O2 /air, the power density can be increased to 235.7/173.5 mW cm-2 , higher than that reported in previous work, and which is 2.32/3.59 times higher than Pt/C.
Keyphrases
- metal organic framework
- reduced graphene oxide
- induced apoptosis
- highly efficient
- cell cycle arrest
- quantum dots
- gold nanoparticles
- transition metal
- carbon dioxide
- endoplasmic reticulum stress
- high efficiency
- single cell
- heavy metals
- stem cells
- cell proliferation
- oxidative stress
- systematic review
- cell therapy
- mass spectrometry
- pi k akt
- human health
- simultaneous determination