Atomically dispersed Fe-N-C derived from dual metal-organic frameworks as efficient oxygen reduction electrocatalysts in direct methanol fuel cells

Xu, Xinlong; Zhang, Xiaoming; Sun, Rongchuan; Sun, Xuejing; Li, Huanqiao; Wu, Chuchu; Wang, Junhu; Wang, Suli; Xia, Zhangxun

doi:10.1016/j.apcatb.2019.118042

Cited by 97 publications

(50 citation statements)

References 59 publications

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“…Thus, the NPC-1000 electrocatalyst has a satisfactory tolerance to methanol crossover, while the Pt/C electrocatalyst does not. In this regard, the NPC-1000 catalyst has a particular advantage over the Pt/C electrocatalyst because the direct methanol fuel cell (DMFC) is deemed a very promising power solution in the future [68][69][70][71].…”

Section: Electrocatalytic Activity For Orr Of Nitrogendoped Carbon Sphere Electrocatalystsmentioning

confidence: 99%

Efficient oxygen reduction reaction by a highly porous, nitrogen-doped carbon sphere electrocatalyst through space confinement effect in nanopores

Yang

Gao

et al. 2021

J Adv Ceram

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A highly porous nitrogen-doped carbon sphere (NPC) electrocatalyst was prepared through the carbonization of biomass carbon spheres mixed with urea and zinc chloride in N2 atmosphere. The sample carbonized at 1000 °C demonstrates a superior oxygen reduction reaction (ORR) performance over the Pt/C electrocatalyst, while its contents of pyridinic nitrogen and graphitic nitrogen are the lowest among samples synthesized at the same or lower carbonization temperatures. This unusual result is explained by a space confinement effect from the microporous and mesoporous structures in the microflakes, which induces the further reduction of peroxide ions or other oxygen species produced in the first step reduction to water to have the preferred overall four electron reduction ORR process. This work demonstrates that in addition to the amount or species of its active sites, the space confinement can be a new approach to enhance the ORR performance of precious-metal-free, nitrogen-doped carbon electrocatalysts.

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Section: Electrocatalytic Activity For Orr Of Nitrogendoped Carbon Sphere Electrocatalystsmentioning

confidence: 99%

Efficient oxygen reduction reaction by a highly porous, nitrogen-doped carbon sphere electrocatalyst through space confinement effect in nanopores

Yang

Gao

et al. 2021

J Adv Ceram

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“…The catalytic activity of MOF derivatives can be further improved by designing dual or multi-MOF composites to enhance their intrinsic activity from the synergetic effect of multiple metal components. 77,165,166 ZIF-L is a 2D leaf-shaped MOF, which has a large surface area and abundant uncoordinated metal-ligand sites. Taking advantage of the leaf-like ZIF-L as a core, by further growing a ZIF-8 shell on the outside and encapsulating 5,10,15,20-tetraphenylporphyrinatoiron (FeTPP) as an Fe source, Cao et al synthesized an FeCo bimetallic material embedded in nitrogen-doped porous carbon (FeCo-C/N) for the ORR (Fig.…”

Section: Bifunctional Electrocatalysts Derived From Mof Compositesmentioning

confidence: 99%

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

Cui

Yin

et al. 2020

Chem. Sci.

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“…A dual-MOF strategy relying on the mixing of ZIF-8 (support precursor) and MIL-101(Fe) (Fe precursor) at different mass ratios followed by mixture pyrolysis was developed [ 70 ]. Aberration-corrected scanning transmission electron microscopy (AC-STEM) of the produced material showed the presence of numerous atomic-scale bright spots attributed to atomically dispersed Fe in the carbon matrix.…”

Section: Mof-based Orr Electrocatalystsmentioning

confidence: 99%

Synthesis and Performance of MOF-Based Non-Noble Metal Catalysts for the Oxygen Reduction Reaction in Proton-Exchange Membrane Fuel Cells: A Review

et al. 2020

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Hydrogen is widely regarded as a prime energy carrier for bridging the gap between renewable energy supply and demand. As the energy-generating component of the hydrogen cycle, affordable and reliable fuel cells are of key importance to the growth of the hydrogen economy. However, the use of scarce and costly Pt as an electrocatalyst for the oxygen reduction reaction (ORR) remains an issue to be addressed, and in this regard, metal–organic frameworks (MOFs) are viewed as promising non-noble alternatives because of their self-assembly capability and tunable properties. Herein, recent (2018–2020) works on MOF-based electrocatalysts containing N-doped C, Mn, Fe, Co, multiple metals, and multiple sites are reviewed and summarized with a focus on ORR activity, and the principal physicochemical properties and electrochemical performance of these catalysts realized using rotating electrodes are compared.

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Atomically dispersed Fe-N-C derived from dual metal-organic frameworks as efficient oxygen reduction electrocatalysts in direct methanol fuel cells

Cited by 97 publications

References 59 publications

Efficient oxygen reduction reaction by a highly porous, nitrogen-doped carbon sphere electrocatalyst through space confinement effect in nanopores

Efficient oxygen reduction reaction by a highly porous, nitrogen-doped carbon sphere electrocatalyst through space confinement effect in nanopores

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

Synthesis and Performance of MOF-Based Non-Noble Metal Catalysts for the Oxygen Reduction Reaction in Proton-Exchange Membrane Fuel Cells: A Review

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