Fe–P: A New Class of Electroactive Catalyst for Oxygen Reduction Reaction

Singh, Kiran; Bae, Eun Jin; Yu, Jong‐Sung

doi:10.1021/ja511759u

Cited by 298 publications

(225 citation statements)

References 34 publications

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“…12,13,37 Furthermore, the P-O-Fe or P-O-Co bonds will further modify the electronic structure. 24,25,38 Finally, the synergistic effect of the transition metals is beneficial for the reactant adsorption and reduction at the catalyst surface.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Fe, Co Incorporated in P-Doped Porous Carbon Using a Metal-Organic Framework (MOF) Precursor as Stable Catalysts for Oxygen Reduction Reaction

Wang

Guo

et al. 2018

J. Electrochem. Soc.

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Heteroatom-doped porous carbon materials have recently attracted significant attention due to their superior catalytic activities for an oxygen reduction reaction (ORR). Transition metals co-doped with heteroatom are considered to have positive effects on improving ORR catalytic activity and stability. We report a series of novel Fe, Co incorporated in P-doped carbon materials, which give high ORR performance by an in-situ carbonization method. The ratios of the two metals and the carbonization temperatures are the key factors for the electrocatalytic activity. Due to the synergistic effect of the two transition metals, the Fe, Co incorporated in P-doped porous carbon sample, carbonized at 900 • C, shows the highest catalytic activity and stability. Electrochemical measurements show that Fe, Co incorporated in P-doped porous carbon materials are promising electrocatalysts to substitute Pt-based catalysts for fuel cells application. With the increasing environmental pollution caused by the use of fossil fuels, it is of great urgency to develop renewable energy conversion and storage devices, such as fuel cells and metal-air batteries, which are beneficial to environmental protection. The disadvantage of the present technologies is due to the sluggish oxygen reduction reaction (ORR) kinetics at the cathode, which consequently limits the working efficiency of these devices, thereby creating a need for extra ORR catalysts to increase the reaction rate. The most popular and efficient ORR catalyst is the commercial Pt/C (Pt nanoparticles loading on the carbon (XC-72)). However, due to its expensive cost, poor durability, and CO poisoning in the reaction, 1-5 the need to explore new efficient, durable, and cheap catalysts to substitute the Pt/C is urgent. In past decades, several alternatives have been developed, such as noble metal-based nanoparticles, 5,6 non-noble metal catalysts, 7,8 and metal-free materials. 9 Heteroatom-doped carbon materials are the representatives of the metal-free materials and the mechanism of the reduction of oxygen has been widely investigated. There is a consensus that the pyridine-like N and graphite-like N (also called quaternary N) are more active than the pyrrole-type N in the N-doped carbon materials for ORR. 10,11 In general, the excellent ORR catalytic activity is ascribed to the heteroatom-doped carbon material increasing the asymmetry of the carbon atomic spin density in accordance with the theoretical calculations.12,13 In 2013, Masa et al. verified that the trace amount of transition metal with heteroatom co-doped in carbon materials significantly improve the catalyst activity.14 The meticulous research showed that transition metal-doped carbon would intensify the asymmetry of the carbon atomic spin density to promote ORR. 14,15 Thus, designing transition metal-heteroatom-C electrocatalysts is applicable to improving the ORR catalytic activity. For example, Mu et al. synthesized a novel three-dimensions (3D) Fe-N-nanocarbon intercalated graphene catalyst, which possesses a high ...

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Section: Resultsmentioning

confidence: 99%

Synthesis of Fe, Co Incorporated in P-Doped Porous Carbon Using a Metal-Organic Framework (MOF) Precursor as Stable Catalysts for Oxygen Reduction Reaction

Wang

Guo

et al. 2018

J. Electrochem. Soc.

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“…In this respect, enormous viable noble-metal-free catalysts (Fe, Co, etc.) [6,7], or metal oxide [8], sulphide [9], nitride [10], carbide [11], metal-free carbon based materials [12] and nitrogen-doped carbon [13] have been actively pursued. Among above mentioned catalysts, the application of iron oxide as the electrocatalyst is…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective and Facile Preparation of Fe2O3 Nanoparticles Decorated N-Doped Mesoporous Carbon Materials: Transforming Mulberry Leaf into a Highly Active Electrocatalyst for Oxygen Reduction Reactions

Zhang

Guan

et al. 2018

Catalysts

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Herein, a promising method to prepare efficient N-doped porous carbon-supported Fe 2 O 3 nanoparticles (Fe 2 O 3 /N-PCs) ORR electrocatalysts is presented. The porous carbon was derived from a biomass i.e., mulberry leaf through a cost-effective approach. The existence of diverse compounds containing carbon, oxygen, nitrogen and sulfur in mulberry leaf benefit the formation and uniform dispersion of Fe 2 O 3 nanoparticles (NPs) in the porous carbon. In evaluating the effects of the carbon support on the Fe 2 O 3 NPs towards the ORR, we found that the sample of Fe 2 O 3 /N-PCs-850 (Fe 2 O 3 /N-PCs obtained at 850 • C) with high surface area of 313.8 m 2 ·g −1 exhibits remarkably superior ORR activity than that of materials acquired under other temperatures. To be specific, the onset potential and reduction peak potential of Fe 2 O 3 /N-PCs-850 towards ORR are 0.936 V and 0.776 V (vs. RHE), respectively. The calculated number of electron transfer n for the ORR is 3.9, demonstrating a near four-electron-transfer process. Furthermore, it demonstrates excellent longtime stability and resistance to methanol deactivation compared with Pt/C catalyst. This study provides a novel design of highly active ORR electrocatalysts from low-cost abundant plant products.

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“…5 In this respect, a various of catalysts based on non-precious metal complexes (Fe, Co, Ni-based oxides, carbides or phosphides, etc. ), 6 doping carbon materials (N, S and P singleor multiple-doped mesoporous carbon, carbon nanotubes, graphene materials, carbon nitride etc.) have been extensively studied.…”

mentioning

confidence: 99%

A chromium nitride/carbon nitride containing graphitic carbon nanocapsule hybrid as a Pt-free electrocatalyst for oxygen reduction

Zhao

Wang

et al. 2015

Chem. Commun.

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Fe–P: A New Class of Electroactive Catalyst for Oxygen Reduction Reaction

Cited by 298 publications

References 34 publications

Synthesis of Fe, Co Incorporated in P-Doped Porous Carbon Using a Metal-Organic Framework (MOF) Precursor as Stable Catalysts for Oxygen Reduction Reaction

Synthesis of Fe, Co Incorporated in P-Doped Porous Carbon Using a Metal-Organic Framework (MOF) Precursor as Stable Catalysts for Oxygen Reduction Reaction

Cost-Effective and Facile Preparation of Fe2O3 Nanoparticles Decorated N-Doped Mesoporous Carbon Materials: Transforming Mulberry Leaf into a Highly Active Electrocatalyst for Oxygen Reduction Reactions

A chromium nitride/carbon nitride containing graphitic carbon nanocapsule hybrid as a Pt-free electrocatalyst for oxygen reduction

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