A non-noble material cathode catalyst dual-doped with sulfur and nitrogen as efficient electrocatalysts for oxygen reduction reaction

Xu, Li; Pan, Guoshun; Shi, Xiao‐Lei; Zou, Chunli; Luo, Guihai; Chen, Gaopan

doi:10.1016/j.electacta.2015.01.107

Cited by 15 publications

(15 citation statements)

References 40 publications

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“…We obtained a slope of 171 mV, which corresponds to a value of α c = 0.35. In a similar study conducted in alkaline electrolyte on an ORR catalyst prepared using Fe, N, and C precursors, the α c value obtained was 0.50 [33].…”

Section: Reduction Of Adsorbed Oxygenmentioning

confidence: 75%

Application of a non-noble Fe-N-C catalyst for oxygen reduction reaction in an alkaline direct ethanol fuel cell

et al. 2018

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A Fe-N-C non-noble metal (NNM) catalyst for oxygen reduction reaction (ORR) catalyst was prepared via hard templating method using Fe(II)-phthalocyanine. Its electrochemical behavior towards the ORR was tested in alkaline conditions using cyclic voltammetry (CV) and rotating disk electrode (RDE) techniques. The kinetics of the reduction of the adsorbed oxygen, the selectivity, and the activity towards hydrogen peroxide reduction reaction (HPRR), were investigated. The ethanol tolerance and the stability in alkaline conditions were also assessed with the purpose to verify the good potentiality of this catalyst to be used in an alkaline direct ethanol fuel cell (DEFC). The results evidence that the ORR occurs mainly following the direct 4 ereduction to OH-, and that the Fe-N-C catalysts is highly ethanol tolerant with a promising stability. The alkaline DEFC tests, performed after the optimization of the ionomer amount used for the preparation of the catalyst ink, show good results at low-intermediate currents, with a maximum power density of 62 mW cm-2. The initial DEFC performance can be partially recovered after a purge-drying procedure. Keywords Fe(II)phthalocyanine; rotating disk electrode; anion exchange membrane fuel cell; stability; hydrogen peroxide reduction; cyclic voltammetry. Highlights  The ORR kinetics of a Fe-N-C catalyst was investigated using cyclic voltammetry  Fe-N-C catalyst is more active towards O 2 reduction than H 2 O 2 reduction  Fe-N-C catalyst is ethanol tolerant and shows good durability in RDE  Performance of alkaline DEFC varies using different ionomer wt. % at cathode  Short-term DEFC durability was preliminary assessed

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Section: Reduction Of Adsorbed Oxygenmentioning

confidence: 75%

Application of a non-noble Fe-N-C catalyst for oxygen reduction reaction in an alkaline direct ethanol fuel cell

et al. 2018

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“…However, the FeCN-S-800 has higher relative content of FeS than the FeCN-S-1000. Carbon could reduce some iron ions to a metallic state, and with part of the metal transferred to iron compounds, the ORR activity was obviously affected by the composition and type of iron compound. − Studies of FeS-related structures have demonstrated improved ORR activity, electrical conductivity, and consumption of O 2 . − From the XRD patterns, there was no Fe metal appeared, PB-PEDOT forms FeS and Fe 3 C crystalline structures after pyrolysis which was consistent with the TEM results. However, FeCN-S catalyst exhibited the phenomenon of aggregation at a much higher pyrolysis temperature of 1000 °C from HRSEM image which blocked the active sites and reduces the ORR ability. − …”

Section: Results and Discussionmentioning

confidence: 98%

Nanostructured Cementite/Ferrous Sulfide Encapsulated Carbon with Heteroatoms for Oxygen Reduction in Alkaline Environment

Huang

Wang

et al. 2019

ACS Sustainable Chem. Eng.

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Nonprecious metal catalysts of the oxygen reduction reaction (ORR) are highly preferred in anion exchange membrane fuel cells (AEMFCs) because of the high stability and low cost. Here, a novel pyrolyzed poly(3,4ethylene dioxythiophene) hydrate (PEDOT)-Prussian blue (PB) catalyst (FeCN-S) for the ORR in an AEMFC cathode demonstrated high catalytic performance. After pyrolysis at 800 °C, the templated PB-PEDOT formed the nanostructured Fe 3 C/FeS encapsulated carbon with heteroatom contribution, which exhibited optimized ORR activity with a direct fourelectron transfer pathway for AEMFC applications. This improvement in activity is attributed to the specific structure, the heteroatom contribution, and the coordination structure.

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“…Up to now, platinum (Pt)-based materials are considered as the best catalysts for oxygen reduction reaction (ORR), while ruthenium (Ru) and iridium (Ir) oxides are the best catalysts for oxygen evolution reaction (OER). However, the wide applications of these materials are hindered largely by their high cost, poor durability, and scarcity [5,6]. Therefore, the development of highly efficient and lowcost catalyst with good stability to replace conventional precious metals is highly desirable and remains to be a great challenge.…”

Section: Introductionmentioning

confidence: 99%

One-step synthesis of cobalt, nitrogen-codoped carbon as nonprecious bifunctional electrocatalyst for oxygen reduction and evolution reactions

et al. 2016

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A non-noble material cathode catalyst dual-doped with sulfur and nitrogen as efficient electrocatalysts for oxygen reduction reaction

Cited by 15 publications

References 40 publications

Application of a non-noble Fe-N-C catalyst for oxygen reduction reaction in an alkaline direct ethanol fuel cell

Application of a non-noble Fe-N-C catalyst for oxygen reduction reaction in an alkaline direct ethanol fuel cell

Nanostructured Cementite/Ferrous Sulfide Encapsulated Carbon with Heteroatoms for Oxygen Reduction in Alkaline Environment

One-step synthesis of cobalt, nitrogen-codoped carbon as nonprecious bifunctional electrocatalyst for oxygen reduction and evolution reactions

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