Kirkendall effect induced the formation of hollow Co2P in Co-N-C for ORR, OER, HER and flexible Zn–Air battery

Liu, Xue; Yan, Wei; Song, Jie; Song, Hao; Chen, Wenmiao; Zhang, Yuexing; Chen, Yanli

doi:10.1016/j.cej.2024.152301

Cited by 7 publications

(2 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increased density of active sites and enhanced charge transfer further accelerate OER kinetics, resulting in higher oxygen evolution rates. 54,55 Figure S12 also illustrates the linear sweep voltammetry curves for the oxygen reduction reaction (ORR) of three distinct samples: Pt−P/ZIF67, Pt−Ir−P/ZIF67, and Pt/C. Notably, the Pt−Ir−P/ZIF67 sample (red curve) exhibits an onset potential of approximately 0.89 V, closely paralleling the performance of the commercial Pt/C catalyst (blue curve), which has an onset potential of around 0.88 V. However, Pt− Ir−P/ZIF67 does not demonstrate a significant enhancement over Pt/C.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The varying performances can be attributed to the modified electronic structure induced by phosphorus, which facilitates the formation and desorption of OER intermediates such as OH*, O*, and OOH*. The increased density of active sites and enhanced charge transfer further accelerate OER kinetics, resulting in higher oxygen evolution rates. , …”

Section: Resultsmentioning

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

View full text Add to dashboard Cite

show abstract

Electronic Structure Regulation of MnCo₂O₄ via Surface‐Phosphorization Coupling to Monolithic Carbon for Oxygen Electrocatalysis in Zn–Air Batteries

Liu,

Zhang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

An urgent challenge to the development of rechargeable Zn–air batteries (RZABs) is the highly active, durable, and low‐cost catalysts for oxygen reduction reaction and oxygen evolution reaction (ORR and OER). Herein, a carbon‐based monolithic catalyst is designed via anchoring P‐modified MnCo2O4 inverse spinel nanoparticles on biomass‐derived carbon (P‐MnCo2O4@PWC). The introduction of surface P atoms regulates the electronic structures and valences of metal atoms by adjusting the coordination fields by (P‐O)δ– and Metal‐P. The optimization of the adsorption behavior of key intermediates facilitates the activation and conversion of reaction species. The monolithic structure is beneficial to the construction of a three‐phase interface for efficient mass transfer and high electrical conductivity. The P‐MnCo2O4@PWC catalyst displays outstanding bifunctional catalytic properties with a thin ΔE (the difference between the OER potential at 10 mA cm–2 and the ORR halfwave potential) of 0.66 V. The RZAB with P‐MnCo2O4@PWC as cathode delivers an exceptional peak power density (160 mW cm–2) and remarkable cycle life (over 1200 cycles), overcoming those with noble metal counterparts. This research provides a promising general surface‐phosphorization way to the design of carbon electrocatalysts and the high‐value utilization of biomass.

show abstract

Dual-phase Fe/CoFe2O4 nanoparticles supported on N-doped porous carbon derived from dual-immobilized ZIF-8 for high-efficiency oxygen reduction

Zhuo,

Jiang,

Chen

et al. 2025

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Kirkendall effect induced the formation of hollow Co2P in Co-N-C for ORR, OER, HER and flexible Zn–Air battery

Cited by 7 publications

References 59 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

Electronic Structure Regulation of MnCo₂O₄ via Surface‐Phosphorization Coupling to Monolithic Carbon for Oxygen Electrocatalysis in Zn–Air Batteries

Dual-phase Fe/CoFe2O4 nanoparticles supported on N-doped porous carbon derived from dual-immobilized ZIF-8 for high-efficiency oxygen reduction

Contact Info

Product

Resources

About

Kirkendall effect induced the formation of hollow Co2P in Co-N-C for ORR, OER, HER and flexible Zn–Air battery

Cited by 7 publications

References 59 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

Electronic Structure Regulation of MnCo2O4 via Surface‐Phosphorization Coupling to Monolithic Carbon for Oxygen Electrocatalysis in Zn–Air Batteries

Dual-phase Fe/CoFe2O4 nanoparticles supported on N-doped porous carbon derived from dual-immobilized ZIF-8 for high-efficiency oxygen reduction

Contact Info

Product

Resources

About

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

Electronic Structure Regulation of MnCo₂O₄ via Surface‐Phosphorization Coupling to Monolithic Carbon for Oxygen Electrocatalysis in Zn–Air Batteries