Large-scale synthesis of N-doped carbon capsules supporting atomically dispersed iron for efficient oxygen reduction reaction electrocatalysis

Yang, Hui; Liu, Yanfang; Liu, Xiaolu; Wang, Xiangke; Tian, He; Waterhouse, Geoffrey I. N.; Kruger, Paul E.; Telfer, Shane G.; Ma, Shengqian

doi:10.1016/j.esci.2022.02.005

Cited by 131 publications

(75 citation statements)

References 46 publications

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“…Coincidentally, after the addition of ascorbic acid and GO to the BMZIF, respectively, the performance of both catalysts was dramatically improved. It can be seen from the survey table that the ORR performance of C-Fe/Fe 3 O 4 @NGF is even comparable to that of Yang et al 57 and many electrocatalysts recently reported in the literature (Table S1, ESI †). Furthermore, the catalyst exhibits a remarkably more positive limited current density (5.04 mA cm À2 at 0.4 V) than C-Fe/Fe 3 O 4 (4.88 mA cm À2 at 0.4 V), Fe/Fe 3 O 4 @NGF (4.54 mA cm À2 at 0.4 V) and Fe/Fe 3 O 4 (3.11 mA cm À2 at 0.4 V), which is also comparable to the benchmark Pt/C (Fig.…”

Section: Electrochemical Assessment Towards the Orrsupporting

confidence: 81%

Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe₃O₄ loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction

Zhang

Shen

et al. 2022

New J. Chem.

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Section: Electrochemical Assessment Towards the Orrsupporting

confidence: 81%

Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe₃O₄ loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction

Zhang

Shen

et al. 2022

New J. Chem.

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“…FeP‐NWCC has a stable and excellent mass transfer efficiency. [ 49 ] The RRDE technology was used to speculate the reaction mechanism (Figure S7, Supporting Information). According to the Equations S2 and S3, Supporting Information, the average electron transfer ( n ) and the yield of hydrogen peroxide are calculated to be 3.77–3.90 and less than 10% in the range of 0.2–0.8 V (Figure 3e), respectively.…”

Section: Resultsmentioning

confidence: 99%

Wood‐Derived Monolithic Catalysts with the Ability of Activating Water Molecules for Oxygen Electrocatalysis

Zhang

Liu

Wang

et al. 2022

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advantages of zinc-air batteries (ZABs), such as high energy density and theoretical capacity, low cost, high safety, and stability, endow them with huge application potential in the field of energy storage and conversion. [4,5] During the charging and discharging process of ZABs, oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) play a crucial role in determining the energy conversion efficiency. [6] Both of ORR and OER involve complex multiple electron transfer processes. [7] The inherently slow kinetics of ORR and OER leads to lofty overpotentials, resulting in low energy efficiency, and low power density of ZABs. [8] Noble metal-based electrocatalysts (such as Pt/C, RuO 2 , IrO 2 ) exhibit superior oxygen electrocatalytic activity, while the high cost and deficient stability hinder their industrial-scale application in the rechargeable ZABs. [9,10] Therefore, it is urgent to develop stable and efficient nonnoble metal-based ORR/OER bifunctional electrocatalysts to facilitate the development of ZABs. [11] In alkaline solution, the favorable four-electron ORR for ZABs follows: 1) O 2 (g)where * denotes the active site. [12] The second and fourth steps both involve the coupling process of activated Oxygen reduction reaction (ORR) is the key reaction on cathode of rechargeable zinc-air batteries (ZABs). However, the lack of protons in alkaline conditionslimits the rate of ORR. Herein, an activating water strategy is proposed to promote oxygen electrocatalytic activity by enhancing the proton production from water dissociation. FeP nanoparticles (NPs) are coupled on N-doped wood-derived catalytically active carbon (FeP-NWCC) to associate bifunctional active sites. In alkaline, FeP-NWCC possesses outstanding catalytic activities toward ORR (E 1/2 = 0.86 V) and Oxygen evolution reaction (OER) (overpotential is 310 mV at 10 mA cm −2 ). The liquid ZABs assembled by FeP-NWCC deliver superior peak power density (144 mW cm −2 ) and cycle stability (over 450 h). The quasi-solid-state ZABs based on FeP-NWCC also display excellent performances. Theoretical calculation illustrates that the superb bifunctional performance of FeP-NWCC results from the elevated dissociation efficiency of water via FeP NPs to assist the oxygen catalytic process. The strategy of activating water provides a new perspective for the design of ORR/OER bifunctional catalysts. This work is a model for the application of forest biomass.

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“…In this case, the subsequent Bi 3+ adsorption will deviate the original crystallographic orientations, leading to lattice misoriention in the deposited Bi nanostructures. [ 28,29 ] Since the size of Zn 2+ is smaller than that of Bi 3+ and the adsorbed Zn 2+ amount is ultralow, the lattice torsion between two grains among the final Bi deposits is expected to be relatively low. Different from the traditional deposition method, no external current or potential is applied in this process.…”

Section: Resultsmentioning

confidence: 99%

Galvanic‐Cell Deposition Enables the Exposure of Bismuth Grain Boundary for Efficient Electroreduction of Carbon Dioxide

Chen

Liao

et al. 2022

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Metallic bismuth (Bi) holds great promise in efficient conversion of carbon dioxide (CO2) into formate, yet the complicated synthetic routes and unobtrusive performance hinder the practical application. Herein, a facile galvanic‐cell deposition method is proposed for the rapid and one‐step synthesis of Bi nanodendrites. Compared to the traditional deposition method, it is found that the special galvanic‐cell configuration can promote the exposure of low‐angle grain boundaries. X‐ray absorption spectroscopy, in situ characterizations and theoretical calculations indicate the electronical structures can be greatly tailored by the grain boundaries, which can facilitate the CO2 adsorption and intermediate formation. Consequently, the grain boundary‐enriched Bi nanodendrites exhibit a high selectivity toward formate with an impressively high production rate of 557.2 µmol h‐1 cm‐2 at −0.94 V versus reversible hydrogen electrode, which outperforms most of the state‐of‐the‐art Bi‐based electrocatalysts with longer synthesis time. This work provides a straightforward method for rapidly fabricating active Bi electrocatalysts, and explicitly reveals the critical effect of grain boundary in Bi nanostructures on CO2 reduction.

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Large-scale synthesis of N-doped carbon capsules supporting atomically dispersed iron for efficient oxygen reduction reaction electrocatalysis

Cited by 131 publications

References 46 publications

Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe₃O₄ loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction

Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe₃O₄ loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction

Wood‐Derived Monolithic Catalysts with the Ability of Activating Water Molecules for Oxygen Electrocatalysis

Galvanic‐Cell Deposition Enables the Exposure of Bismuth Grain Boundary for Efficient Electroreduction of Carbon Dioxide

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Large-scale synthesis of N-doped carbon capsules supporting atomically dispersed iron for efficient oxygen reduction reaction electrocatalysis

Cited by 131 publications

References 46 publications

Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe3O4 loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction

Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe3O4 loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction

Wood‐Derived Monolithic Catalysts with the Ability of Activating Water Molecules for Oxygen Electrocatalysis

Galvanic‐Cell Deposition Enables the Exposure of Bismuth Grain Boundary for Efficient Electroreduction of Carbon Dioxide

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Resources

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Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe₃O₄ loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction

Ascorbic acid-modified dual-metal–organic-framework derived C-Fe/Fe₃O₄ loaded on a N-doped graphene framework for enhanced electrocatalytic oxygen reduction