Conversion of Pt nanoparticles encapsulated within MIL-101(Fe) to FePt intermetallic nanoparticles supported on carbon promotes formic acid electrooxidation - Details

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Pt-based　catalysts　have　limited　usefulness　in　direct　formic　acid　fuel　cells　(DFAFCs)　due　to　their　susceptibility　to　CO　poisoning.　Combining　Pt　with　Fe　atoms　is　an　effective　approach　for　suppressing　Pt　poisoning　by　CO.　In　this　work,　we　fabricate　novel　carbon-supported　FePt　alloy　nanoparticles　(FePt@C)　by　pyrolyzing　Pt　nanoparticles　encapsulated　within　mesoporous　MIL-101(Fe)　(Pt@MIL-101(Fe)).　The　resulting　FePt　nanoparticles　(Fe3Pt　(1　1　1))　possess　a　lower　CO　adsorption　energy　(0.64　eV)　than　the　(1　1　1)　surfaces　of　Pt,　indicating　that　the　FePt　nanoparticles　are　far　less　susceptible　to　CO　poisoning.　The　mass　activity　and　current　density　of　a　9.6　wt%　FePt@C　catalyst　are　4.2　and　4.5　times,　respectively,　higher　than　those　of　a　commercial　Pt/C　catalyst.　Furthermore,　the　9.6　wt%　FePt@C　catalyst　exhibits　excellent　durability,　with　only　a　0.1%　loss　of　mass　activity　after　1000　cycles.　These　results　should　guide　the　development　of　improved　anode　catalysts　for　DFAFCs　based　on　MOF　precursors.　©　2021　The　Authors

Keyword：

Binary alloys Catalyst poisoning Electrooxidation Formic acid Formic acid fuel cells (FAFC) Intermetallics Metal nanoparticles Platinum

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[ 1 ] [Li, Xi]Key Laboratory for Analytical Science of Food Safety and Biology, Ministry of Education, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
[ 2 ] [Cai, Jiaofeng]Key Laboratory for Analytical Science of Food Safety and Biology, Ministry of Education, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
[ 3 ] [Wei, Changgeng]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Lin, Wei]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 5 ] [Lin, Wei]Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen; Fujian; 361005, China
[ 6 ] [Li, Yi]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 7 ] [Li, Yi]Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen; Fujian; 361005, China
[ 8 ] [Tang, Jing]Key Laboratory for Analytical Science of Food Safety and Biology, Ministry of Education, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
[ 9 ] [Tang, Jing]Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou; 350108, China

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Source ：

Electrochemistry Communications

ISSN： 1388-2481

Year： 2021

Volume： 127

5 . 4 4 3

JCR@2021

4 . 7 0 0

JCR@2023

ESI HC Threshold：117

JCR Journal Grade：2

CAS Journal Grade：3

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WoS CC Cited Count： 0

SCOPUS Cited Count： 3

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 1

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