Transition metal carbides as cathode supports for PEM fuel cells

Hamo, Eliran R.; Rosen, Brian A.

doi:10.1007/s12274-022-4831-3

Cited by 8 publications

(5 citation statements)

References 129 publications

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“…The interaction between active catalytic sites and support materials also plays a vital role in effective electron transfer and increased resistance to catalyst sintering and leaching. Emerging materials such as graphitic carbon nitride and transition metal carbides offer superior alternatives to traditional carbon supports, enhancing corrosion resistance and structural integrity. − Furthermore, phosphorus doping in carbon materials has been shown to further improve these properties by introducing defect sites that enhance catalytic activity and durability, promoting better electron conductivity and resistance to structural degradation. , …”

Section: Introductionmentioning

confidence: 99%

Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H₂/O₂ Fuel Cells

Shu,

Qiu,

Gan

et al. 2024

J. Phys. Chem. C

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In polymer electrolyte membrane fuel cells, voltage reversal is a significant challenge that leads to rapid degradation through catalyst deterioration, carbon corrosion, and platinum dissolution. To address this issue, we developed a novel catalyst by depositing platinum−iridium (Pt− Ir) alloys onto phosphorus-modified, pyrolyzed ZIF-67 substrates. The phosphorus doping significantly enhanced the graphitization of the ZIF-67 substrate during thermal treatment and improved the binding between the Pt−Ir alloy and the carbon substrate, thereby enhancing the electronic properties and stability of the alloy nanoparticles. The Pt−Ir−P/ZIF67 anode catalyst demonstrated exceptional performance in hydrogen− oxygen fuel cells, achieving a power density of up to 1.37 W/cm 2 and enduring voltage reversal for up to 130 min, showcasing its outstanding durability.

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Section: Introductionmentioning

confidence: 99%

Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H₂/O₂ Fuel Cells

Shu,

Qiu,

Gan

et al. 2024

J. Phys. Chem. C

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“…Alternatively, non-carbonaceous materials such as metal oxides and carbides have also been explored, but their limited electrical conductivity and lack of porosity could hinder their use as support. [40][41][42][43] Therefore, developing carbon supports with high surface area, favorable porosity, and high corrosion resistance still remains an unresolved challenge.…”

Section: Introductionmentioning

confidence: 99%

A Porous Wrinkled Graphitic Carbon as Corrosion‐Resistant Carbon Support for Durable Fuel‐Cell Catalysts

Fan

Hao

et al. 2023

Adv Materials Technologies

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The lifespan of proton‐exchange membrane fuel cells heavily relies on the durability of the carbon support of cathode catalysts. However, commercial carbon supports like ketjenblack (KB) and Vulcan carbon (VC) face the challenge of balancing porosity, surface area, and electrochemical stability. To address this issue, a 3D porous wrinkled graphitic carbon (PWGC) is designed and synthesized using a catalyst‐free, plasma‐enhanced chemical vapor deposition approach. The resulting PWGC possesses a hierarchically porous structure with a high surface area, a high degree of graphitization, and exceptional corrosion resistance. As a result, the Pt/PWGC catalysts with the use of PWGC as the carbon support demonstrate superior high potential stability compared to those made with KB and VC as the carbon support. Additionally, a sacrificial layer strategy is introduced to further reduce PWGC corrosion, resulting in Pt@C/PWGC catalysts that show significantly improved durability in membrane electrode assembly tests. After 5K voltage cycles from 1.0 to 1.5 V, the retention of electrochemically active surface area approaches 56.8%, surpassing the 23.6% retention of commercial Pt/C catalysts tested under the same conditions.

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“…However, the noble metal Pt is unfortunately limited to its large-scale applications because of its scarcity and high cost. 3,4 Hence, it is of great importance to explore and develop catalysts with a low cost, abundant resources and catalytic properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a carbon-wrapped microsphere MoO₂/Mo₂C heterojunction as an efficient electrocatalyst for the oxygen reduction reaction and the hydrogen evolution reaction

Cai,

Zhang,

Wang

et al. 2023

Dalton Trans.

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Transition metal carbides as cathode supports for PEM fuel cells

Cited by 8 publications

References 129 publications

Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H₂/O₂ Fuel Cells

Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H₂/O₂ Fuel Cells

A Porous Wrinkled Graphitic Carbon as Corrosion‐Resistant Carbon Support for Durable Fuel‐Cell Catalysts

Synthesis of a carbon-wrapped microsphere MoO₂/Mo₂C heterojunction as an efficient electrocatalyst for the oxygen reduction reaction and the hydrogen evolution reaction

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Transition metal carbides as cathode supports for PEM fuel cells

Cited by 8 publications

References 129 publications

Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H2/O2 Fuel Cells

Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H2/O2 Fuel Cells

A Porous Wrinkled Graphitic Carbon as Corrosion‐Resistant Carbon Support for Durable Fuel‐Cell Catalysts

Synthesis of a carbon-wrapped microsphere MoO2/Mo2C heterojunction as an efficient electrocatalyst for the oxygen reduction reaction and the hydrogen evolution reaction

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Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H₂/O₂ Fuel Cells

Phosphorus-Doped Pt–Ir Nanoalloy for the Improved Voltage Reversal Durability Anode in H₂/O₂ Fuel Cells

Synthesis of a carbon-wrapped microsphere MoO₂/Mo₂C heterojunction as an efficient electrocatalyst for the oxygen reduction reaction and the hydrogen evolution reaction