Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands
Electrically conductive metal–organic frameworks (MOFs) for chemical energy storage have attracted tremendous interests recently. Here, we report Pt(CNO) MOF, Pt(CNHO) MOF, and Pt(CNH) MOF with high conductivities of 885.5 S/m, 602.5 S/m, and 426.9 S/m, respectively, where the organic ligands and square-planar Pt ions are connected into two-dimensional (2D) MX configuration. We attempted to employ these layer-stacked 2D Pt-MOFs as the cathode electrocatalyst for acidic oxygen reduction reaction (ORR) based on the research background of proton exchange membrane hydrogen fuel cells. The electronic structures of Pt-MOFs were altered by varying the coordinated ligand X to optimize the acidic ORR performance. Pt(CNO) MOF shows the best performance, with a superior activity (E = 0.836 V vs reversible hydrogen electrode (RHE) at 1600 r.p.m, n = 3.96, and j = 5.28 mA cm) and exceptional durability of up to 20,000 cycles for ORR in an acidic media with a pH of 0.29.
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Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Physics|
1.Institute for Advanced Study,Shenzhen University,Shenzhen,518060,China
2.College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen,518060,China
3.Yangtze Delta Region Institute (Huzhou),University of Electronic Science and Technology of China,Huzhou,313001,China
4.Department of Physics,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
5.College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen,Guangdong,518060,China
6.Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China
7.College of Electronics and Information Engineering,Shenzhen University,Guangdong Province,518000,China
Iqbal，Rashid,Ali，Sajjad,Saleem，Adil,et al. Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands[J]. CHEMICAL ENGINEERING JOURNAL,2023,455.
Iqbal，Rashid.,Ali，Sajjad.,Saleem，Adil.,Majeed，Muhammad K..,Hussain，Arshad.,...&Zhao，Wei.(2023).Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands.CHEMICAL ENGINEERING JOURNAL,455.
Iqbal，Rashid,et al."Electrically conductive Pt-MOFs for acidic oxygen reduction: Optimized performance via altering conjugated ligands".CHEMICAL ENGINEERING JOURNAL 455(2023).
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