ZIF-derived in situ nitrogen-doped porous carbons as efficient metal-free electrocatalysts for oxygen reduction reaction

Zhang, Peng; Sun, Fang; Xiang, Zhonghua; Shen, Zhigang; Yun, Jimmy; Cao, Dapeng

doi:10.1039/c3ee42799d

Cited by 725 publications

(418 citation statements)

References 67 publications

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“…Another method to fabricate N-doped nanocarbon materials is through the use of MOFs as a sacrificial template/precursor with incorporation of a second precursor to achieve in situ N-doped porous carbon with large surface area and narrow pore size distribution. Some organic compounds such as furfuryl alcohol (FA), glucose and melamine are employed for this purpose [39,50,51]. Briefly, Another method to fabricate N-doped nanocarbon materials is through the use of MOFs as a sacrificial template/precursor with incorporation of a second precursor to achieve in situ N-doped porous carbon with large surface area and narrow pore size distribution.…”

Section: N-doped Nanocarbon Electrocatalystsmentioning

confidence: 99%

Recent Progress on MOF-Derived Nanomaterials as Advanced Electrocatalysts in Fuel Cells

et al. 2016

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Developing a low cost, highly active and durable cathode material is a high-priority research direction toward the commercialization of low-temperature fuel cells. However, the high cost and low stability of useable materials remain a considerable challenge for the widespread adoption of fuel cell energy conversion devices. The electrochemical performance of fuel cells is still largely hindered by the high loading of noble metal catalyst (Pt/Pt alloy) at the cathode, which is necessary to facilitate the inherently sluggish oxygen reduction reaction (ORR). Under these circumstances, the exploration of alternatives to replace expensive Pt-alloy for constructing highly efficient non-noble metal catalysts has been studied intensively and received great interest. Metal-organic frameworks (MOFs) a novel type of porous crystalline materials, have revealed potential application in the field of clean energy and demonstrated a number of advantages owing to their accessible high surface area, permanent porosity, and abundant metal/organic species. Recently, newly emerging MOFs materials have been used as templates and/or precursors to fabricate porous carbon and related functional nanomaterials, which exhibit excellent catalytic activities toward ORR or oxygen evolution reaction (OER). In this review, recent advances in the use of MOF-derived functional nanomaterials as efficient electrocatalysts in fuel cells are summarized. Particularly, we focus on the rational design and synthesis of highly active and stable porous carbon-based electrocatalysts with various nanostructures by using the advantages of MOFs precursors. Finally, further understanding and development, future trends, and prospects of advanced MOF-derived nanomaterials for more promising applications of clean energy are presented.

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Section: N-doped Nanocarbon Electrocatalystsmentioning

confidence: 99%

Recent Progress on MOF-Derived Nanomaterials as Advanced Electrocatalysts in Fuel Cells

et al. 2016

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“…In addition, research has continuously focused on preparing metal oxides through the direct calcination of various MOFs [30][31][32] . However, no attention has been given to the creation of high-level heteroatomdoped carbon materials through direct pyrolysis of MOFs, which contain heteroatoms in their organic components, such as phosphorus, boron, sulfur and nitrogen [33][34][35] . In addition, direct pyrolysis of MOFs may be an efficient method for avoiding the generation of oxygen-bearing groups, such as hydroxyl groups, in the resulting carbon materials.…”

mentioning

confidence: 99%

High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

2014

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Theoretical and experimental results have revealed that the lithium-ion storage capacity for nitrogen-doped graphene largely depends on the nitrogen-doping level. However, most nitrogen-doped carbon materials used for lithium-ion batteries are reported to have a nitrogen content of approximately 10 wt% because a higher number of nitrogen atoms in the two-dimensional honeycomb lattice can result in structural instability. Here we report nitrogen-doped graphene particle analogues with a nitrogen content of up to 17.72 wt% that are prepared by the pyrolysis of a nitrogen-containing zeolitic imidazolate framework at 800°C under a nitrogen atmosphere. As an anode material for lithium-ion batteries, these particles retain a capacity of 2,132 mA h g À 1 after 50 cycles at a current density of 100 mA g À 1 , and 785 mAh g À 1 after 1,000 cycles at 5 A g À 1 . The remarkable performance results from the graphene analogous particles doped with nitrogen within the hexagonal lattice and edges.

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“…S16). Therefore, the presence of S could be beneficial for enhancing ORR activity [41,47,51]. Moreover, electrochemical impedance spectroscopy (EIS) (Fig.…”

Section: Science China Materialsmentioning

confidence: 99%

“…However, the ORR activity of Fe-N-C catalysts still remains deficient compared to that of Ptbased catalysts in acidic media, owing to the low density of active sites [33][34][35][36][37][38]. Meanwhile, the specific surface area and porous structure of carbon-based NPMCs have influence on the accessibility of the active sites and ORR activity [39][40][41][42][43]. Consequently, rational design of porous carbon structures with abundant Fe-N-C active sites is highly desired.…”

Section: Introductionmentioning

confidence: 99%

Graphene-templated synthesis of sandwich-like porous carbon nanosheets for efficient oxygen reduction reaction in both alkaline and acidic media

Wang

et al. 2018

Sci. China Mater.

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Developing low-cost, high-performance electrocatalysts for the oxygen reduction reaction (ORR) is crucial for implementation of fuel cells and metal-air batteries into practical applications. Graphene-based catalysts have been extensively investigated for ORR in alkaline electrolytes. However, their performance in acidic electrolytes still requires further improvement compared to the Pt/C catalyst. Here we report a self-templating approach to prepare graphene-based sandwich-like porous carbon nanosheets for efficient ORR in both alkaline and acidic electrolytes. Graphene oxides were first used to adsorb m-phenylenediamine molecules which can form a nitrogen-rich polymer network after oxidative polymerization. Then iron (Fe) salt was introduced into the polymer network and transformed into ORR active Fe-N-C sites along with Fe, FeS, and FeN 0.05 nanoparticles after pyrolysis, generating ORR active sandwich-like carbon nanosheets. Due to the presence of multiple ORR active sites. The as-obtained catalyst exhibited prominent ORR activity with a half-wave potential~30 mV more positive than Pt/C in 0.1 mol L −1 KOH, while the half-wave potential of the catalyst was only~40 mV lower than that of commercial Pt/C in 0.1 mol L −1 HClO 4 . The unique planar sandwich-like structure could expose abundant active sites for ORR. Meanwhile, the graphene layer and porous structure could simultaneously enhance electrical conductivity and facilitate mass transport. The prominent electrocatalytic activity and durability in both alkaline and acidic electrolytes indicate that these carbon nanosheets hold great potential as alternatives to precious metalbased catalysts, as demonstrated in zinc-air batteries and proton exchange membrane fuel cells.

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ZIF-derived in situ nitrogen-doped porous carbons as efficient metal-free electrocatalysts for oxygen reduction reaction

Cited by 725 publications

References 67 publications

Recent Progress on MOF-Derived Nanomaterials as Advanced Electrocatalysts in Fuel Cells

Recent Progress on MOF-Derived Nanomaterials as Advanced Electrocatalysts in Fuel Cells

High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

Graphene-templated synthesis of sandwich-like porous carbon nanosheets for efficient oxygen reduction reaction in both alkaline and acidic media

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