Litchi-like porous Fe/N/C spheres with atomically dispersed FeN<sub>x</sub> promoted by sulfur as highly efficient oxygen electrocatalysts for Zn–air batteries

Wei, Qingyi; Zhang, Gaixia; Yang, Xiaohua; Fu, Yanqing; Yang, Guanhua; Chen, Ning; Chen, Weifeng; Sun, Shuhui

doi:10.1039/c7ta08746b

Cited by 53 publications

(23 citation statements)

References 40 publications

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“…in the matrix, providing high surface area within the skeleton structure, and produce evenly distributed highly active Fe-N x sites by reducing the large Fe particles to a large extent. [127] Additionally, an iron porphyrin-based catalyst was prepared by using a so-called foaming agent technique, and the Mössbauer spectra suggested two different types of ferrous Fe-N 4 centers. [68]…”

Section: Cooperative Pyrolysismentioning

confidence: 99%

Metal–Nitrogen–Carbon Catalysts of Specifically Coordinated Configurations toward Typical Electrochemical Redox Reactions

et al. 2021

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Metal-nitrogen-carbon (M-N-C) material with specifically coordinated configurations is a promising alternative to costly Pt-based catalysts. In the past few years, great progress is made in the studies of M-N-C materials, including the structure modulation and local coordination environment identification via advanced synthetic strategies and characterization techniques, which boost the electrocatalytic performances and deepen the understanding of the underlying fundamentals. In this review, the most recent advances of M-N-C catalysts with specifically coordinated configurations of M-N x (x = 1-6) are summarized as comprehensively as possible, with an emphasis on the synthetic strategy, characterization techniques, and applications in typical electrocatalytic reactions of the oxygen reduction reaction, oxygen evolution reaction, hydrogen evolution reaction, CO 2 reduction reaction, etc., along with mechanistic exploration by experiments and theoretical calculations. Furthermore, the challenges and potential perspectives for the future development of M-N-C catalysts are discussed.

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Section: Cooperative Pyrolysismentioning

confidence: 99%

Metal–Nitrogen–Carbon Catalysts of Specifically Coordinated Configurations toward Typical Electrochemical Redox Reactions

et al. 2021

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“…Electrochemical energy conversion and storage devices including fuel cells, unitize regenerative fuel cells (URFCs) and the rechargeable metal-air (oxygen) batteries are key nodes in the renewable energy development and utilization. [1][2][3][4][5][6][7][8] These devices use the oxygen reduction reaction (ORR), at the cathode of fuel cells and during the discharge process of metal-air batteries. [9][10][11][12][13][14][15] The performance of fuel cells and metal-air batteries is significantly limited by the sluggish ORR kinetics.…”

Section: Introductionmentioning

confidence: 99%

Biomass‐derived nonprecious metal catalysts for oxygen reduction reaction: The demand‐oriented engineering of active sites and structures

et al. 2020

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Oxygen reduction reaction (ORR) is an important electrochemical process for renewable energy conversion and storage applications such as fuel cells and metal-air batteries. ORR is sluggish in kinetics and requires a large amount of platinum group metal (PGM)-based catalysts to facilitate its slow reaction rate. Application of precious metals raises the cost and decreases the competitivity of these devices in the market. To address this challenge, PGM-free ORR catalysts have been intensively investigated as an alternative to replace the PGM-based catalysts and to promote the deployment of ORR-related applications. In particular, the biomass holds promising potential to be used as the precursor material for PGM-free ORR catalysts. This pathway has gained more and more attention in recent years. In this review, recent advances regarding biomass-derived ORR catalysts are summarized with a focus on the rational design of both active sites and porous structures which are the two key factors in determining ORR performance of catalysts. At the end, the perspectives of development of biomass-derived catalysts is discussed.

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“…The outstanding electrocatalytic performance of Fe-Ni 2 P@N,P-CNSs toward OER and ORR can be ascribed to the structural and composition features as follows: (i) the strong coupling effect between the well-dispersed Fe-Ni 2 P particles and conductive porous carbon nanosheets, which is facile for the exposure of more active sites (Hu et al, 2016; Lei et al, 2018); (ii) the introduction of N and P in the carbon matrix, by which the electronic structure of the applied carbon support is effectively modified, creates more available defects with enhanced catalytic activity and durability (Huang et al, 2018; Wei et al, 2018); (iii) the large specific surface area of Fe-Ni 2 P@N,P-CNSs, which provides numerous accessible catalytic sites, and endows available infiltration to the electrolyte for effective O 2 bubble evolution and a reductive reaction over the electrode surface (Fu et al, 2018e; Zhou et al, 2018). By taking advantage of these exceptional structural merits and the synergistic effect between the multi-components, the as-prepared Fe-Ni 2 P@N,P-CNSs display impressive catalytic activity and stability toward both OER and ORR.…”

Section: Resultsmentioning

confidence: 99%

Immobilization of Fe-Doped Ni2P Particles Within Biomass Agarose-Derived Porous N,P-Carbon Nanosheets for Efficient Bifunctional Oxygen Electrocatalysis

Xiao

Deng

et al. 2019

Front. Chem.

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A feasible and green sol-gel method is proposed to fabricate well-distributed nano-particulate Fe-Ni 2 P incorporated in N, P-codoped porous carbon nanosheets (Fe-Ni 2 P@N,P-CNSs) using biomass agarose as a carbon source, and ethylenediamine tetra (methylenephosphonic acid) (EDTMPA) as both the N and P source. The doped Fe in Ni 2 P is essential for a substantial increase in intrinsic catalytic activity, while the combined N,P-containing porous carbon matrix with a better degree of graphitization endows the prepared Fe-Ni 2 P@N,P-CNSs catalyst with a high specific surface area and improved electrical conductivity. Benefiting from the specific chemical composition and designed active site structure, the as-synthesized Fe-Ni 2 P@N,P-CNSs manifests a satisfying catalytic performance toward both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in an alkaline solution, with low overpotential, small Tafel slope and long-term durability, relative to the counterparts (Fe-free Ni 12 P 5 /Ni 2 P 2 O 7 @N,P-CNSs and CNSs) with single components and even comparable to Pt/C and RuO 2 catalysts. The present work broadens the exploration of efficient bifunctional oxygen electrocatalysts using earth abundant biomass as carbon sources based on non-noble metals for low cost renewable energy conversion/storage.

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Litchi-like porous Fe/N/C spheres with atomically dispersed FeN_x promoted by sulfur as highly efficient oxygen electrocatalysts for Zn–air batteries

Abstract: Litchi-like porous Fe/N/C spheres with atomically dispersed FeNx promoted by sulfur are highly efficient electrocatalysts for high-power Zn–air batteries.

Cited by 53 publications

References 40 publications

Metal–Nitrogen–Carbon Catalysts of Specifically Coordinated Configurations toward Typical Electrochemical Redox Reactions

Metal–Nitrogen–Carbon Catalysts of Specifically Coordinated Configurations toward Typical Electrochemical Redox Reactions

Biomass‐derived nonprecious metal catalysts for oxygen reduction reaction: The demand‐oriented engineering of active sites and structures

Immobilization of Fe-Doped Ni2P Particles Within Biomass Agarose-Derived Porous N,P-Carbon Nanosheets for Efficient Bifunctional Oxygen Electrocatalysis

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Litchi-like porous Fe/N/C spheres with atomically dispersed FeNx promoted by sulfur as highly efficient oxygen electrocatalysts for Zn–air batteries

Abstract: Litchi-like porous Fe/N/C spheres with atomically dispersed FeNx promoted by sulfur are highly efficient electrocatalysts for high-power Zn–air batteries.

Cited by 53 publications

References 40 publications

Metal–Nitrogen–Carbon Catalysts of Specifically Coordinated Configurations toward Typical Electrochemical Redox Reactions

Metal–Nitrogen–Carbon Catalysts of Specifically Coordinated Configurations toward Typical Electrochemical Redox Reactions

Biomass‐derived nonprecious metal catalysts for oxygen reduction reaction: The demand‐oriented engineering of active sites and structures

Immobilization of Fe-Doped Ni2P Particles Within Biomass Agarose-Derived Porous N,P-Carbon Nanosheets for Efficient Bifunctional Oxygen Electrocatalysis

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Litchi-like porous Fe/N/C spheres with atomically dispersed FeN_x promoted by sulfur as highly efficient oxygen electrocatalysts for Zn–air batteries