Active and stable PtP<sub>2</sub>-based electrocatalysts solve the phosphate poisoning issue of high temperature fuel cells

Yu, Jeong-Hoon; Singh, Kiran; Kim, Sejun; Kang, Tong‐Hyun; Lee, Kug‐Seung; Ringe, Stefan; Yu, Jong‐Sung

doi:10.1039/d2ta09110k

Cited by 7 publications

(2 citation statements)

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“…(d) LSV and (e) CV curves and (f) MA and ECSA of PtRhCu@Pt/C at different ADT stages. (g) Comprehensive evaluation of activity, stability, and PA resistance. ,,,− Reproduced with permission from reference [Copyright 2023 Elsevier] and references and [Copyright 2024 Wiley] and reference [Copyright 2024 Royal Society of Chemistry] and references ,, and [Copyright 2024 Elsevier].…”

Section: Resultsmentioning

confidence: 99%

Ultrastable and Phosphoric Acid-Resistant PtRhCu@Pt Oxygen Reduction Electrocatalyst for High-Temperature Polymer Electrolyte Fuel Cells

An,

Li,

Zhang

et al. 2024

ACS Catal.

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With much enhanced fuel flexibility to overcome the shortcomings of hydrogen production and storage, high-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) are still facing challenges of activity loss of oxygen reduction electrocatalyst under the working circumstance of phosphoric acid (PA) electrolyte. Dissolution and leaching of metal component of PtM (M = Cu, Co, Ni•••) electrocatalysts is one of the key factors that degrade their initial resistance toward PA and hinder the accessing of activity and durability simultaneously. Here, we report an ultradurable PtRhCu@Pt/C electrocatalyst with a high mass activity of 0.90 A mg −1 Pt , which only decreased by 14.4% after 30K ADT cycles in the half-cell and reaches the DOE at 2025 target (<30 mV at 0.8 A cm −2 ) with 27 mV voltage loss at 0.8 A cm −2 in the single-cell. After adding 0.1 M PA into the electrolyte, the half-wave potential of PtRhCu@Pt/C is negatively shifted by only 52 mV, much lower than that of commercial Pt/C (90 mV). Moreover, the HT-PEMFC assembled by this catalyst delivers a preeminent peak power density of 529 and 977 mW cm −2 under H 2 −air and H 2 −O 2 conditions, respectively. Experiments and theoretical calculations reveal that the ligand effect arising from the sublayer Cu is attributed to the ability of PA resistance, while the self-healing behavior and the synergy between the PtRhCu core and the Pt shell ensures high stability.

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Section: Resultsmentioning

confidence: 99%

Ultrastable and Phosphoric Acid-Resistant PtRhCu@Pt Oxygen Reduction Electrocatalyst for High-Temperature Polymer Electrolyte Fuel Cells

An,

Li,

Zhang

et al. 2024

ACS Catal.

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“…9a). 53 The prepared catalyst exhibits excellent activity and stability under harsh H 3 PO 4 conditions (Fig. 9b and c).…”

Section: Cathode Catalysts For Ht-pemfcsmentioning

confidence: 87%

Recent progress of antipoisoning catalytic materials for high temperature proton exchange membrane fuel cells doped with phosphoric acid

Xue,

Zhang

2024

Ind. Chem. Mater.

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Rhombohedral platinum-copper intermetallic compound: A high phosphate tolerance electrocatalyst for HT-PEMFC

Zhang,

Xu,

Yang

et al. 2024

Chemical Engineering Journal

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Active and stable PtP₂-based electrocatalysts solve the phosphate poisoning issue of high temperature fuel cells

Abstract: Platinum (Pt) loaded over carbon support is known to be the best and most effective electrocatalyst for oxygen reduction reaction (ORR). However, given its high surface energy, it tends to...

Cited by 7 publications

References 75 publications

Ultrastable and Phosphoric Acid-Resistant PtRhCu@Pt Oxygen Reduction Electrocatalyst for High-Temperature Polymer Electrolyte Fuel Cells

Ultrastable and Phosphoric Acid-Resistant PtRhCu@Pt Oxygen Reduction Electrocatalyst for High-Temperature Polymer Electrolyte Fuel Cells

Recent progress of antipoisoning catalytic materials for high temperature proton exchange membrane fuel cells doped with phosphoric acid

Rhombohedral platinum-copper intermetallic compound: A high phosphate tolerance electrocatalyst for HT-PEMFC

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Active and stable PtP2-based electrocatalysts solve the phosphate poisoning issue of high temperature fuel cells

Abstract: Platinum (Pt) loaded over carbon support is known to be the best and most effective electrocatalyst for oxygen reduction reaction (ORR). However, given its high surface energy, it tends to...

Cited by 7 publications

References 75 publications

Ultrastable and Phosphoric Acid-Resistant PtRhCu@Pt Oxygen Reduction Electrocatalyst for High-Temperature Polymer Electrolyte Fuel Cells

Ultrastable and Phosphoric Acid-Resistant PtRhCu@Pt Oxygen Reduction Electrocatalyst for High-Temperature Polymer Electrolyte Fuel Cells

Recent progress of antipoisoning catalytic materials for high temperature proton exchange membrane fuel cells doped with phosphoric acid

Rhombohedral platinum-copper intermetallic compound: A high phosphate tolerance electrocatalyst for HT-PEMFC

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Active and stable PtP₂-based electrocatalysts solve the phosphate poisoning issue of high temperature fuel cells