Well-defined Co-N-C catalyst based on ZIF-67 in mixed solvents with low amount of ligands for efficient oxygen reduction reaction

Xili, Dege; Zhou, Qian; Zhang, Lijuan

doi:10.1016/j.jallcom.2022.165072

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…By raising the concentration of methyl-imidazole, ZIF-67 size was managed. It demonstrates the long-term robustness of ORR in an alkaline medium with regulated particle size [40]. ORR activity that is dependent on particle size reductions was disclosed by Zhang et al By varying the quantity of metal precursors and ligands, Fe is doped in the ZIF precursors.…”

Section: The Influence Of Size and Shapementioning

confidence: 73%

Metal–Organic Framework (MOF)-Derived Catalyst for Oxygen Reduction Reaction (ORR) Applications in Fuel Cell Systems: A Review of Current Advancements and Perspectives

et al. 2023

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High-porosity, crystalline, and surface-area-rich metal–organic frameworks (MOFs) may be employed in electrochemical energy applications for active catalysis. MOFs have recently been modified using secondary building blocks, open metal sites with large pore diameters, and functional ligands for electronic conductivity. They have the potential for excellent performance in fuel cell applications, and they have several possibilities to enhance the fundamental characteristics of mass and electron transportation. MOFs may be combined with other materials, such as solitary metal nanoparticles and carbon and nitrogen composites, to increase their catalytic efficacy, especially in oxygen reduction reaction (ORR). As a result, this study focuses on MOF derivatives for ORR applications, including porous carbon MOF, single metal MOF-derived composites, metal oxides, and metal phosphides. An efficient MOF electrocatalyst platform for ORR applications is presented, along with its prospects. These initiatives promote promising MOF electrocatalysts for enhancing fuel cell efficiency and pique curiosity for possible growth in subsequent research.

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Section: The Influence Of Size and Shapementioning

confidence: 73%

Metal–Organic Framework (MOF)-Derived Catalyst for Oxygen Reduction Reaction (ORR) Applications in Fuel Cell Systems: A Review of Current Advancements and Perspectives

et al. 2023

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“…The computed electron- transfer number (n) of Mn-N x /NC between 0.4 and 0.6 V is about 3.86, which is verge on the n of commercial Pt/C. Xili et al, 2022). Moreover, the electron-transfer mechanism of the catalysts was further researched by utilizing rotating ring disk electrode (RRDE) measurement.…”

Section: Resultsmentioning

confidence: 94%

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Deng

Pang

et al. 2022

Front. Chem.

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Exploring durable and highly-active non-noble-metal nanomaterials to supersede Pt-based nanomaterials is an effective way, which can reduce the cost and boost the catalytic efficiency of oxygen reduction reaction (ORR). Herein, we constructed atomically-dispersed Mn atoms on the ZIF-derived nitrogen-doped carbon frameworks (Mn-Nx/NC) by stepwise pyrolysis. The Mn-Nx/NC relative to pure nitrogen-doped carbon (NC) exhibited superior electrocatalytic activity with a higher half-wave potential (E1/2 = 0.88 V) and a modest Tafel slope (90 mV dec−1) toward ORR. The enhanced ORR performance of Mn-Nx/NC may be attributed to the existence of Mn-Nx active sites, which can more easily adsorb intermediates, promoting the efficiency of ORR. This work provides a facile route to synthesize single-atom catalysts for ORR.

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“…2b, two peaks are observed in the synthesized samples, corresponding to the D-band (carbon defects) and G-band (graphitization), respectively. 35,36 As the pyrolysis temperature increases from 800 °C to 1000 °C, the I D /I G values of Mn-N-C catalysts decrease gradually from 0.89 to 0.87. This trend indicates that high pyrolysis temperatures can increase the graphitization degree, thereby improving the conductivity of the catalysts.…”

Section: Structural Characterizationmentioning

confidence: 99%

Manganese, nitrogen co-doped porous carbon with high-loading active sites as the oxygen reduction catalyst for Zn–air batteries

Xu,

Gao,

et al. 2024

Sustainable Energy Fuels

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Well-defined Co-N-C catalyst based on ZIF-67 in mixed solvents with low amount of ligands for efficient oxygen reduction reaction

Cited by 8 publications

References 31 publications

Metal–Organic Framework (MOF)-Derived Catalyst for Oxygen Reduction Reaction (ORR) Applications in Fuel Cell Systems: A Review of Current Advancements and Perspectives

Metal–Organic Framework (MOF)-Derived Catalyst for Oxygen Reduction Reaction (ORR) Applications in Fuel Cell Systems: A Review of Current Advancements and Perspectives

Constructing atomically-dispersed Mn on ZIF-derived nitrogen-doped carbon for boosting oxygen reduction

Manganese, nitrogen co-doped porous carbon with high-loading active sites as the oxygen reduction catalyst for Zn–air batteries

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