Highly conductive skeleton Graphitic-C3N4 assisted Fe-based metal-organic frameworks derived porous bimetallic carbon nanofiber for enhanced oxygen-reduction performance in microbial fuel cells

Zhong, Kengqiang; Wang, Yan; Wu, Qikai; You, Henghui; Zhang, Hongguo; Su, Minhua; Liang, Rouying; Zuo, Jianliang; Yang, Shaoran; Tang, Jinfeng

doi:10.1016/j.jpowsour.2020.228313

Cited by 53 publications

(16 citation statements)

References 58 publications

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“…This graphitic character could facilitate the electron and mass transfers to the active sites and therefore promoting the ORR. [47] The X-ray diffraction (XRD) patterns of CPDA in Figure S6 showed a broad diffraction peak at 22.3°, suggesting its amorphous nature. [48] The characteristic sharp XRD peak detected at 27.6°for C 3 N 4 is owing to the interlayer stacking of C 3 N 4 , in agreement with previous reports.…”

Section: Resultsmentioning

confidence: 99%

Developing N‐Rich Carbon from C₃N₄‐Polydopamine Composites for Efficient Oxygen Reduction Reaction

Ferraz

Guo

et al. 2021

ChemElectroChem

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Nitrogen-rich carbon-based materials are amongst the most promising electrocatalysts for the oxygen reduction reaction (ORR) and/or the oxygen evolution reaction (OER). The introduction of nitrogen within the carbonaceous framework generates catalytic active sites and alters the electrical conductivity. However, the synthesis of these materials often involves long processes and severe reaction conditions which yield a low concentration of nitrogen (N) functionalities. Herein, we present a facile method for the synthesis of N-rich carbon by carbonizing a carbon nitride (C 3 N 4 )-polydopamine composite (CNDA) which can readily be prepared by room temperature self-polymerisation of dopamine in the presence of C 3 N 4 . The intrinsically high N content in C 3 N 4 leads to a highly N-doped carbon. The CNDA catalyst synthesized at 900 °C contained 12.5 at% of N, enhancing both the ORR and OER catalytic activities through a 4-e À dominated pathway, providing a comparable E 1/2 and a remarkably improved diffusion-limited current to the other reported N-doped carbon catalysts. When used as an air-cathode in a zinc-air battery, this CNDA catalyst possessed stable discharge-charge cycling performance for 216 h, outperforming the Pt/C standard. This work opens a promising platform for the development of template-free processes for the synthesis of non-metal and nitrogen-rich carbon materials which are attractive for metal-air batteries and fuel cells.

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Section: Resultsmentioning

confidence: 99%

Developing N‐Rich Carbon from C₃N₄‐Polydopamine Composites for Efficient Oxygen Reduction Reaction

Ferraz

Guo

et al. 2021

ChemElectroChem

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“…68,69 Cathode composites combining a unique host-guest electronic interaction of core-shell structure and Nafion as proton conductor have led to significantly improved electrochemical performance for ORR, outperforming the benchmark Pt/C/Nafion composite electrocatalysts. 70,71 Fe-N-C core-shell structured catalyst via in situ growth of Zn/Fe bimetallic MOFs on carbon nanotubes demonstrated superior conductivity and a maximum power density of 820 mW cm À2 in microbial fuel cells (MFCs). 72 A core-shell structured Ni/Co-N-C catalyst in MFC achieved the maximum power density of 4,335.6 mW m À2 .…”

Section: Composite Pecesmentioning

confidence: 99%

How increasing proton and electron conduction benefits electrocatalytic CO2 reduction

Hui

Luna

2021

Matter

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“…[ 33 ] Moreover, graphitic carbon is an excellent 2D substrate material due to its rich nitrogen dopants and graphene‐like sp 2 bonding structure. It is noteworthy that graphitic C 3 N 4 can be cleverly combined with metal‐based nanoparticles to form a unique highly conductive metal‐based core–shell structure in the electrocatalyst, [ 34 ] which is conducive to enhancing the interface contact between the metal‐based nanoparticles and the graphite carbon shell, thereby ensure ORR catalytic activity and stability.…”

Section: Development Of Carbon‐based Composites For Mfc Cathodesmentioning

confidence: 99%

“…[ 83,84 ] Moreover, pyrolysis of a Mn‐doped Fe‐based MOF (MIL‐101) to produce layered porous bimetallic CNFs can also obtain high output power in MFCs (Figure 4b). [ 34 ] Notably, there are many reasonable ways to design MOFs, but the use of ZIF‐8 to obtain an ORR catalyst is still dominant. Due to the extremely high nitrogen content of the ligand 2‐methylimidazole, ZIF‐8 and its analogue ZIF‐67 are the best carbon source and nitrogen source.…”

Section: Development Of Carbon‐based Composites For Mfc Cathodesmentioning

confidence: 99%

Advances in Understanding Carbon Composite Catalysts Based on Cathode for Microbial Fuel Cells

Zhang

Liu

et al. 2021

Energy Tech

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Single‐chamber microbial fuel cells (MFCs) with a simple structure and superior performance have been extensively studied. However, due to the sluggish kinetics of the cathode oxygen reduction reaction (ORR), the power generation of MFCs is greatly constrained. It is highly desirable to explore efficient cathode catalysts for reducing the overpotential to improve the electrochemical performance of MFCs. To date, a considerable number of carbon‐based composites have exhibited comparable power generation capacity to Pt in MFCs, showing the great potential in the development of remarkable performance and low‐cost cathode ORR catalysts. Herein, recent achievements of carbon‐based composites of air‐cathodes based on single‐chamber MFCs are summarized, mainly focusing on the selection of carbon‐based materials, composite synthesis methods, and structural regulation on the nanoscale. The key factors affecting the ORR in composites are also discussed. The crucial challenges of MFCs that still need to be resolved are further summed up before practical applications and scale‐up fabrication. Particularly, this review focuses on the design strategies and preparation methods of functional carbon‐based composites to boost the performance of MFCs, aiming to provide some scientific directions to develop advanced materials for MFCs in the future.

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Highly conductive skeleton Graphitic-C3N4 assisted Fe-based metal-organic frameworks derived porous bimetallic carbon nanofiber for enhanced oxygen-reduction performance in microbial fuel cells

Cited by 53 publications

References 58 publications

Developing N‐Rich Carbon from C₃N₄‐Polydopamine Composites for Efficient Oxygen Reduction Reaction

Developing N‐Rich Carbon from C₃N₄‐Polydopamine Composites for Efficient Oxygen Reduction Reaction

How increasing proton and electron conduction benefits electrocatalytic CO2 reduction

Advances in Understanding Carbon Composite Catalysts Based on Cathode for Microbial Fuel Cells

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Highly conductive skeleton Graphitic-C3N4 assisted Fe-based metal-organic frameworks derived porous bimetallic carbon nanofiber for enhanced oxygen-reduction performance in microbial fuel cells

Cited by 53 publications

References 58 publications

Developing N‐Rich Carbon from C3N4‐Polydopamine Composites for Efficient Oxygen Reduction Reaction

Developing N‐Rich Carbon from C3N4‐Polydopamine Composites for Efficient Oxygen Reduction Reaction

How increasing proton and electron conduction benefits electrocatalytic CO2 reduction

Advances in Understanding Carbon Composite Catalysts Based on Cathode for Microbial Fuel Cells

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Product

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Developing N‐Rich Carbon from C₃N₄‐Polydopamine Composites for Efficient Oxygen Reduction Reaction

Developing N‐Rich Carbon from C₃N₄‐Polydopamine Composites for Efficient Oxygen Reduction Reaction