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[期刊论文]

S-doped carbon anchoring PtCo intermetallic nanoparticles for efficient proton exchange membrane fuel cells based on molecularly engineered design

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author:

Wang, Minghao (Wang, Minghao.) [1] | Jiang, Nannan (Jiang, Nannan.) [2] | Huang, Bing (Huang, Bing.) [3] | Unfold

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EI

Abstract:

Enhanced ordered intermetallic compounds excel in catalyzing the oxygen reduction reaction (ORR). We introduce a novel synthesis strategy based on molecularly engineered to address challenges in high-temperature annealing. It involves the synthesis of carbon platforms with rich edge sites, which serve as effective anchoring points for nanoparticles. By utilizing sulfur anchoring, we synthesize ordered Pt–Co intermetallic with Pt-rich shells (o-PtCo@Pt) that exhibit remarkable ORR performance. Ordered arrangement of Pt–Co endows Pt-shell with compression stress and enhances the oxidation resistance of Pt/Co sites. O–PtCo@Pt exhibits high mass activity (MA, 0.53 A mgPt−1) and specific activity (SA, 1.17 mA cm−2). It exhibits remarkable as cathodic catalyst in proton exchange membrane fuel cells. It achieves power density of 1.14 W cm−2 at 2.0 A cm−2, with MA of 0.50 A mgPt−1 at 0.9 V. It maintains stability with only 8 % power density loss after 30,000 cycles, retaining MA of 0.35 A mgPt−1. © 2024 Elsevier B.V.

Keyword:

Binary alloys Carbon Cobalt alloys Electrolytic reduction Intermetallics Nanoparticles Oxidation resistance Oxygen Platinum alloys Proton exchange membrane fuel cells (PEMFC) Synthesis (chemical)

Community:

  • [ 1 ] [Wang, Minghao]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350108, China
  • [ 2 ] [Jiang, Nannan]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350108, China
  • [ 3 ] [Jiang, Nannan]University of Chinese Academy of Sciences, Beijing; 100049, China
  • [ 4 ] [Huang, Bing]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350108, China
  • [ 5 ] [Jin, Huihui]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350108, China
  • [ 6 ] [Jin, Huihui]College of Chemistry, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Guan, Lunhui]State Key Laboratory of Structural Chemistry, Fujian Key Laboratory of Nanomaterials, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350108, China

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Source :

Journal of Power Sources

ISSN: 0378-7753

Year: 2024

Volume: 613

8 . 1 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 2

30 Days PV: 3

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