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Polani S, Amitrano R, Baumunk AF, Pan L, Lu J, Schmitt N, Gernert U, Klingenhof M, Selve S, Günther CM, Etzold BJM, Strasser P. Oxygen Reduction Reaction Activity and Stability of Shaped Metal-Doped PtNi Electrocatalysts Evaluated in Gas Diffusion Electrode Half-Cells. ACS APPLIED MATERIALS & INTERFACES 2024; 16:52406-52413. [PMID: 39299221 PMCID: PMC11450720 DOI: 10.1021/acsami.4c11068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 08/26/2024] [Accepted: 09/03/2024] [Indexed: 09/22/2024]
Abstract
The synthesis of bimetallic and trimetallic platinum-based octahedral catalysts for the cathode of proton exchange membrane fuel cells (PEMFCs) is a particularly active area aimed at meeting technological requirements in terms of durability and cost. The electrocatalytic activity and stability of these shaped catalysts were tested at relatively high potentials (@0.9 V vs RHE) and at lower current densities using the rotating disk electrode, which is less suitable for assessing their behavior under the operating conditions of PEMFCs. In this work, we use a gas diffusion electrode (GDE) half-cell setup to test the performance of the catalysts under application-oriented conditions, relatively higher current densities, and a square-wave stability test. After the stability test, we analyzed the GDE catalytic layer to study the agglomeration and dissolution of the transition metal under these conditions by using high-resolution scanning electron microscopy and energy-dispersive X-ray spectroscopy. The present results provide valuable guidance for developing next-generation active and durable catalysts for PEMFCs.
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Affiliation(s)
- Shlomi Polani
- Electrochemical
Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, Berlin 10623, Germany
| | - Raffaele Amitrano
- Electrochemical
Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, Berlin 10623, Germany
| | - Adrian Felix Baumunk
- Friedrich-Alexander-Universität
Erlangen Nürnberg, Power-to-X Technologies, Dr.-Mack-Straße 81, Fürth 90762, Germany
| | - Lujin Pan
- Electrochemical
Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, Berlin 10623, Germany
| | - Jiasheng Lu
- Electrochemical
Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, Berlin 10623, Germany
| | - Nicolai Schmitt
- Ernst-Berl-Institute
for Technical Chemistry and Macromolecular Science, Technical University of Darmstadt, Peter-Grünberg-Strasse 8, Darmstadt 64287, Germany
| | - Ulrich Gernert
- Center
for Electron Microscopy (ZELMI), Technical
University of Berlin, Berlin 10623, Germany
| | - Malte Klingenhof
- Electrochemical
Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, Berlin 10623, Germany
| | - Sören Selve
- Center
for Electron Microscopy (ZELMI), Technical
University of Berlin, Berlin 10623, Germany
| | - Christian M. Günther
- Center
for Electron Microscopy (ZELMI), Technical
University of Berlin, Berlin 10623, Germany
| | - Bastian J. M. Etzold
- Friedrich-Alexander-Universität
Erlangen Nürnberg, Power-to-X Technologies, Dr.-Mack-Straße 81, Fürth 90762, Germany
| | - Peter Strasser
- Electrochemical
Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, Berlin 10623, Germany
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Li Q, Wan T, Yang X, Xiang D, Yuan X, Sun Z, Li P, Zhu M. Low Pt-Doped Crystalline/Amorphous Heterophase Pd 12P 3.2 Nanowires as Efficient Catalysts for Methanol Oxidation. Inorg Chem 2022; 61:12466-12472. [PMID: 35894934 DOI: 10.1021/acs.inorgchem.2c02055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd-based catalysts are attractive anodic electrocatalysts for direct methanol fuel cells owing to their low cost and natural abundance. However, they suffer from sluggish reaction kinetic and insufficient electroactivity in methanol oxidation reaction (MOR). In this work, we developed a facile one-pot approach to fabricate low Pt-doped Pd12P3.2 nanowires with crystalline/amorphous heterophase (termed Pt-Pd12P3.2 NWs) for MOR. The unique crystalline/amorphous heterophase structures promote the catalytic activity by the plentiful active sites at the phase boundaries and/or interfaces and the synergistic effect between different phases. Moreover, the incorporation of trace Pt into Pd lattices modifies the electronic structure and improves the electron transfer ability. Therefore, the obtained Pt-Pd12P3.2 NWs display significantly enhanced electrocatalytic performance toward MOR with the mass activity of 2.35 A mgPd+Pt-1, which is 9.0, 2.9, and 2.0 times higher than those of the commercial Pd/C (0.26 A mgPd-1), Pd12P3.2 NWs (0.82 A mgPd-1), and commercial Pt/C (1.19 A mgPt-1). The high mass activity enables the Pt-Pd12P3.2 NWs to be the promising Pd-based catalysts for MOR.
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Affiliation(s)
- Qiuyu Li
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China.,Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Tingting Wan
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China.,Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Xianlong Yang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China.,Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Dong Xiang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China
| | - Xiaoyou Yuan
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China
| | - Zhenjie Sun
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China
| | - Peng Li
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China.,Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Anhui University, Hefei 230601, P. R. China
| | - Manzhou Zhu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for In-organic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, Anhui, P. R. China.,Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Ministry of Education, Anhui University, Hefei 230601, P. R. China
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