A P–O functional group anchoring Pt<b>–</b>Co electrocatalyst for high-durability PEMFCs

Hu, Sheng-Nan; Xu, Wei-Cheng; Tian, Na; Chen, Su-Min; Li, Meng-Ying; Shen, Jun-Fei; Lin, Jin-Xia; Guo, Shuai-Long; Huang, Xiao-Yang; Zhou, Zhi-You; Sun, Shi-Gang

doi:10.1039/d3ee04503j

Cited by 5 publications

References 59 publications

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Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt₃Co Intermetallic Fuel Cell Catalysts

Chen,

Meng,

Liu

et al. 2024

Adv Funct Materials

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Highly active Pt‐based intermetallic nanoparticles (i‐NPs) loaded on stable supports have garnered considerable interest as promising oxygen reduction reaction (ORR) catalysts for proton‐exchange‐membrane fuel cells (PEMFCs). Herein, thermostable tellurium (Te) is vapor‐deposited onto commercial conductive carbon to anchor high‐temperature‐synthesized Pt3Co i‐NPs. Advanced characterization and density functional theory (DFT) calculations demonstrate that the binding energy of Pt 4f and Co 2p shift positively by 0.12 and 0.95 eV after the introduction of Te in carbon support, promoting the formation of Pt─Te bonds, which enhances the metal–support interactions (MSIs) in Pt3Co/Te‐C (with a more negative binding energy of −10.28 eV). The average size of well‐dispersed Pt3Co i‐NPs (≈3.9 nm) on Te─C is considerably smaller than that of Pt3Co i‐NPs (≈9.1 nm) on commercial carbon. The specific activity of Pt3Co/Te‐C decreases by only 1.5% after 100,000 ultra‐long voltage‐accelerated cycles, while the morphology remains almost unchanged. The membrane electrode assembly using Pt3Co/Te‐C as a cathode demonstrates impressive activity (power density of 2.32 W cm−2@4 A cm−2 and mass activity of 0.50 A mgPt−1@0.9 V) and robust durability (mass activity@0.9 V loss of 26% after 30,000 cycles with intact L12 ordered structure) in H2–O2 operation, significantly exceeding the DOE 2025 requirements.

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Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt₃Co Intermetallic Fuel Cell Catalysts

Chen,

Meng,

Liu

et al. 2024

Adv Funct Materials

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Anisotropic Heterobimetallic Nanomaterials with Controlled Composition for Efficient Oxygen Reduction at Ultralow Loading

Ming,

Cobb,

Rahaman

et al. 2024

Adv Funct Materials

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Hydrogen fuel cells represent a leading technology in developing green energy targeting net‐zero emissions goals by mid‐century. However, the sluggish kinetics of the oxygen reduction reaction (ORR) have hitherto demanded substantial quantities of expensive platinum (Pt) group metals. Advances in catalyst design, including the controllable fabrication of highly branched morphologies to increase the surface area‐to‐volume ratio, intermixing Pt with more affordable transition metals, and controlling composition, offer solutions that can further enhance activity and reduce expense. In this context, Pt/M (M = Fe, Ni, Co) nanopods and nanodendrites with precise composition control using more affordable starting materials are designed and crafted. The method is highly efficient, taking only 30 min and avoiding the need for high‐pressure equipment, making it highly scalable. These catalysts show superior ORR performance at an electrode loading as low as 0.0022 mgPt cm−2. One, nanodendritic Pt/Ni, achieves a mass activity of at 0.9 V versus RHE, making it 87 times more efficient in terms of Pt‐content than a commercial 10 wt% Pt/C nanoparticle standard. These findings provide new opportunities for developing next‐generation, cost‐efficient Pt‐based catalysts, by potentially advancing hydrogen fuel cell technology through performance enhancement and addressing cost challenges through catalyst design.

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Ruthenium atoms anchored on oxygen-modified molybdenum disulfide with strong interfacial coupling as efficient and stable catalysts for lithium–oxygen batteries

Cao,

Cui,

Fang

et al. 2025

Journal of Colloid and Interface Science

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A P–O functional group anchoring Pt–Co electrocatalyst for high-durability PEMFCs

Abstract: Bimetallic Pt-M (M = transition metals) nanoparticles are promising for the development of proton exchange membrane fuel cells (PEMFCs), but their applications are limited by the inevitable nanoparticle aggregation due...

Cited by 5 publications

References 59 publications

Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt₃Co Intermetallic Fuel Cell Catalysts

Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt₃Co Intermetallic Fuel Cell Catalysts

Anisotropic Heterobimetallic Nanomaterials with Controlled Composition for Efficient Oxygen Reduction at Ultralow Loading

Ruthenium atoms anchored on oxygen-modified molybdenum disulfide with strong interfacial coupling as efficient and stable catalysts for lithium–oxygen batteries

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A P–O functional group anchoring Pt–Co electrocatalyst for high-durability PEMFCs

Abstract: Bimetallic Pt-M (M = transition metals) nanoparticles are promising for the development of proton exchange membrane fuel cells (PEMFCs), but their applications are limited by the inevitable nanoparticle aggregation due...

Cited by 5 publications

References 59 publications

Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt3Co Intermetallic Fuel Cell Catalysts

Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt3Co Intermetallic Fuel Cell Catalysts

Anisotropic Heterobimetallic Nanomaterials with Controlled Composition for Efficient Oxygen Reduction at Ultralow Loading

Ruthenium atoms anchored on oxygen-modified molybdenum disulfide with strong interfacial coupling as efficient and stable catalysts for lithium–oxygen batteries

Contact Info

Product

Resources

About

Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt₃Co Intermetallic Fuel Cell Catalysts

Thermostable Tellurium Anchoring Enabling Robust Thermal and Electrochemical Stability for Pt₃Co Intermetallic Fuel Cell Catalysts