Heteroatom-doped hierarchical porous carbons as high-performance metal-free oxygen reduction electrocatalysts

Zhu, Yanjun; Liu, Youlin; Liu, Yuping; Ren, Tie‐Zhen; Du, Guohao; Chen, Tiehong; Yuan, Zhong‐Yong

doi:10.1039/c5ta01611h

Cited by 80 publications

(79 citation statements)

References 36 publications

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“…From Figure b, we can find that some larger mesopores with size of 10–40 nm exist in FBC−Fe. In addition, the N 2 volumes absorbed of FBC−Fe increased steeply at a high relative pressure, which indicates the presence of a macroporous structure in FBC−Fe . Thus, agreed with the result of SEM characterization, FBC−Fe exhibits a hierarchical porous feature.…”

Section: Resultssupporting

confidence: 84%

N, P, S/Fe‐codoped Carbon Derived from Feculae Bombycis as an Efficient Electrocatalyst for Oxygen Reduction Reaction

et al. 2019

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Development of efficient electrocatalysts for oxygen reduction reaction (ORR) from resource-abundant, eco-friendly, and lowcost materials is important for environmental-friendly fuel cells. In this work, N, P, S/Fe-codoped carbon (FBCÀ Fe) with hierarchical porous structure was successfully prepared by the simple pyrolysis of feculae bombycis (FB) in the presence of ferric nitrate and followed by an acid etching process. FBCÀ Fe exhibits an excellent long-term durability and a remarkable methanol-resistance as well as a high electrocatalytic activity (E onset : 0.92 V vs RHE, E 1/2 : 0.81 vs RHE, and electron transfer number: 4.1) comparable to commercial platinum-carbon (Pt/C, 20 wt.%) catalysts for the ORR in alkaline media. This low-cost and simple approach provides a straightforward route to synthesize excellent electrocatalysts for ORR from biomass.

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Section: Resultssupporting

confidence: 84%

N, P, S/Fe‐codoped Carbon Derived from Feculae Bombycis as an Efficient Electrocatalyst for Oxygen Reduction Reaction

et al. 2019

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“…The N 2 adsorption–desorption isotherm displays a striking feature of a type IV profile with an H2 hysteresis loop, which reveals that NC‐0.5‐900 exhibits mesoporous features (Figure d). The N 2 volumes absorbed increased steeply at a high relative pressure, which indicates the presence of a macroporous structure . The BET surface area of NC‐0.5‐900 is 470.9 m 2 g −1 .…”

Section: Resultsmentioning

confidence: 96%

“…The RRDE results of NC‐0.5‐900 agreed with the results from the RDE investigation. The superior ORR catalytic properties of NC‐0.5‐900 could be ascribed to the following elements: the large surface area of NC‐0.5‐900 is favorable for the mass transport during the ORR process and the N doping could introduce defects in the carbon material to cause changes in the charge density distribution of adjacent C atoms because of the difference of the atomic radius between N and C, which thereby offers many active sites for the adsorption of O 2 and promotes the ORR process …”

Section: Resultsmentioning

confidence: 99%

Nitrogen‐Doped Hierarchical Porous Carbons Derived from Sodium Alginate as Efficient Oxygen Reduction Reaction Electrocatalysts

Xuan

Lei

et al. 2017

ChemCatChem

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The exploration of earth‐abundant and low‐cost eco‐friendly materials with an excellent electrocatalytic performance is crucial for sustainable energy development. In this work, 3 D N‐doped hierarchical porous carbon (NC) materials with an interconnected mesoporous/macroporous structure have been synthesized by the simple single‐step pyrolysis of naturally available sodium alginate in the presence of urea. The systematic investigation of the pyrolysis temperature on the performance in the oxygen reduction reaction in 0.1 m KOH solution indicates that the catalyst obtained at 900 °C (NC‐900) exhibits the best catalytic performance because of the high degree of graphitization and the unique hierarchical porous structure. Furthermore, NC‐900 exhibits an excellent durability and a remarkable resistance to methanol poisoning compared to Pt/C in alkaline solution. This work highlights the significance and potential of biomass‐derived hierarchical porous carbon materials for applications in energy conversion devices.

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“…Previously, nitrogen‐doped carbonaceous materials have been widely fabricated, and achieved improved electrocatalytic activity, indicating the feasibility to bring out high electrochemical performance through heteroatoms replacement. Moreover, the uniform distribution of heteroatoms on carbonaceous skeletons is vital for the catalytic performance . Pyrolyzing hybrids of organic molecules or polymers containing heteroatoms has been demonstrated as a versatile and effective strategy for acquiring metal‐free carbonaceous materials .…”

Section: Introductionmentioning

confidence: 99%

Direct Synthesis of Nitrogen, Phosphorus, and Sulfur Tri‐doped Carbon Nanorods as Highly Efficient Oxygen Reduction and Evolution Electrocatalysts

Ren

Yuan

2018

ChemCatChem

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The growing energy and environmental crisis calls for renewable systems for energy production and conversion. Herein, polyaniline‐derived porous carbon nanorods tri‐doped with N, P, and S (NPSC) are directly fabricated by the one‐pot polymerization of aniline and diphenylamine‐4‐sulfonic acid induced by organophosphonic acid and subsequent pyrolysis at 900 °C. The nanorods exhibit high‐efficiency electrochemical oxygen reduction and oxygen evolution activity in alkaline electrolyte, along with strong durability and methanol tolerance. The synergistic effect among the tri‐doped elements and the related porosity can account for the superior electrocatalytic capacity of the fabricated catalysts. Particularly, a Zn–air battery assembled with the fabricated NPSC as the cathode shows a peak power density of 122 mW cm−2 and superior stability, presenting a promising potential for sustainable energy devices, particularly regenerative metal–air batteries and fuel cells.

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Heteroatom-doped hierarchical porous carbons as high-performance metal-free oxygen reduction electrocatalysts

Abstract: Heteroatom-doped porous carbons synthesized through a universal polymerization–carbonization protocol exhibit considerable high activity and stability towards electrochemical oxygen reduction.

Cited by 80 publications

References 36 publications

N, P, S/Fe‐codoped Carbon Derived from Feculae Bombycis as an Efficient Electrocatalyst for Oxygen Reduction Reaction

N, P, S/Fe‐codoped Carbon Derived from Feculae Bombycis as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Nitrogen‐Doped Hierarchical Porous Carbons Derived from Sodium Alginate as Efficient Oxygen Reduction Reaction Electrocatalysts

Direct Synthesis of Nitrogen, Phosphorus, and Sulfur Tri‐doped Carbon Nanorods as Highly Efficient Oxygen Reduction and Evolution Electrocatalysts

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