A metal-organic framework-derived Fe–N–C electrocatalyst with highly dispersed Fe–Nx towards oxygen reduction reaction

Zhang, Xiangkun; Huang, Xiaobo; Hu, Wenhui; Huang, Yongmin

doi:10.1016/j.ijhydene.2019.08.190

Cited by 43 publications

(15 citation statements)

References 55 publications

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“…Moreover, crumpled catalyst with highly dispersed Fe atoms embedded in graphitic layers also exhibited excellent catalytic activity, long‐term durability in alkaline media, and direct 4e − reaction path, eliminating H 2 O 2 production. The excellent behavior of catalyst was majorly attributable to high content of Fe‐N x sites, which were formed due to decomposition of melamine to carbon nitride gases at high temperature, which on reaction with metal atoms promotes formation of M‐N X sites 116 . Recently, Luo et al 117 have demonstrated that second pyrolysis method, in which carbonization product from ZIF is subjected to pyrolysis again and prevents aggregation of Fe atoms yielding high density of atomically dispersed Fe sites.…”

Section: Low‐temperature Fuel Cellsmentioning

confidence: 99%

“…Increased active sites density due to well-defined pore structure, large SA, and tailored morphology through pyrolysis are main advantages of MOF over other precursors. 99,[113][114][115] Zhang et al 116 have worked on the synthesis of MOF derived Fe-N-C by cocalcination of NH 2 -MIL101@PDA and melamine. The results were exceptional in terms of half wave potential (0.88 V), which was 14 mV more than Pt catalysts.…”

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confidence: 99%

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A perspective on development of fuel cell materials: Electrodes and electrolyte

Sajid

Pervaiz

Ali³

et al. 2022

Intl J of Energy Research

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Summary The declining reserves and environmental concerns related to the use of fossil fuels have made the global think tanks to pursue for the technologies considered to be renewable as well as sustainable. Fuel cell technology is emerging and a green way to produce electricity, provided sufficient amount of hydrogen (fuel) is available that directly convert chemical energy to electrical energy. Despite of being an efficient and eco‐friendly source of energy, commercialization of fuel cells is still difficult to attain. Techno‐economic challenges like high manufacturing and assembly costs, water management, system size, nondurability, and instability of the system need to be addressed. In order to resolve these issues, considerable research has been carried out for the development of novel and inexpensive materials for the fuel cells. In this article, we have reviewed the development of electrodes and electrolyte materials for different types of fuel cells. A detailed description of applications, challenges, and improvement of electrodes/electrolytes materials of different types of fuel cells (polymer electrolyte membrane fuel cells, direct methanol fuel cells and solid oxide fuel cells) have been reported in this review article. A brief review of the development of materials for electrode of molten carbonate fuel cells has also been presented in the review.

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Section: Low‐temperature Fuel Cellsmentioning

confidence: 99%

mentioning

confidence: 99%

A perspective on development of fuel cell materials: Electrodes and electrolyte

Sajid

Pervaiz

Ali³

et al. 2022

Intl J of Energy Research

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“…To increase the active sites in catalysts, some porous organic materials with high surface areas, tunable compositions and various structural topologies, such as metal organic frameworks (MOFs) [116], zeolitic imidazolate frameworks (ZIFs) and covalent organic frameworks (COFs), are used to serve as carbon support after being heat treated. For example, Zhang et al [117] used an MOF material named NH 2 -MIL-101@PDA to synthesize the Fe-N-C catalysts with higher ORR activity and stability than those of Pt/C catalyst (Figure 14). According to the XPS results, the Fe-N-C had a high content of N (8.07 at.%) and Fe-N x (1.22 at.%), which is one of the reasons for high activity.…”

Section: Types Of Metalmentioning

confidence: 99%

Recent Advances in Non-Precious Transition Metal/Nitrogen-doped Carbon for Oxygen Reduction Electrocatalysts in PEMFCs

Song

Sha

et al. 2020

Catalysts

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The proton exchange membrane fuel cells (PEMFCs) have been considered as promising future energy conversion devices, and have attracted immense scientific attention due to their high efficiency and environmental friendliness. Nevertheless, the practical application of PEMFCs has been seriously restricted by high cost, low earth abundance and the poor poisoning tolerance of the precious Pt-based oxygen reduction reaction (ORR) catalysts. Noble-metal-free transition metal/nitrogen-doped carbon (M–NxC) catalysts have been proven as one of the most promising substitutes for precious metal catalysts, due to their low costs and high catalytic performance. In this review, we summarize the development of M–NxC catalysts, including the previous non-pyrolyzed and pyrolyzed transition metal macrocyclic compounds, and recent developed M–NxC catalysts, among which the Fe–NxC and Co–NxC catalysts have gained our special attention. The possible catalytic active sites of M–NxC catalysts towards the ORR are also analyzed here. This review aims to provide some guidelines towards the design and structural regulation of non-precious M–NxC catalysts via identifying real active sites, and thus, enhancing their ORR electrocatalytic performance.

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“…An Fe-N-C catalyst was prepared by the co-calcination of NH 2 -MIL-101@polydopamine (PDA) and melamine [ 68 ]. TEM imaging showed that this catalyst exhibited a crumpled structure and featured well-dispersed ≈60-nm-diameter Fe species wrapped in graphitic layers.…”

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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A metal-organic framework-derived Fe–N–C electrocatalyst with highly dispersed Fe–Nx towards oxygen reduction reaction

Cited by 43 publications

References 55 publications

A perspective on development of fuel cell materials: Electrodes and electrolyte

A perspective on development of fuel cell materials: Electrodes and electrolyte

Recent Advances in Non-Precious Transition Metal/Nitrogen-doped Carbon for Oxygen Reduction Electrocatalysts in PEMFCs

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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