2017
DOI: 10.1002/adsu.201700086
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FeNi2Se4–Reduced Graphene Oxide Nanocomposite: Enhancing Bifunctional Electrocatalytic Activity for Oxygen Evolution and Reduction through Synergistic Effects

Abstract: Water splitting reaction using earth abundant and environmentally benign catalysts is critical for renewable energy technologies. Herein we report a hybrid composite, FeNi 2 Se 4 nanoparticles supported on nitrogen doped reduced graphene oxide (FeNi 2 Se 4 -NrGO) as an efficient and dependable bifunctional electrocatalyst for oxygen evolution and oxygen reduction reactions (OER and ORR, respectively) under alkaline conditions. While FeNi 2 Se 4 nanoparticles themselves showed good catalytic activity for water … Show more

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Cited by 42 publications
(45 citation statements)
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References 62 publications
(56 reference statements)
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“…The pattern exhibits a group of distinct diffraction peaks, which can be well assigned to a monoclinic FeNi2Se4 phase (PDF#04-006-5240) [31,32] , indicating the high crystallinity and purity of the synthesized product. The SEM images of FeNi2Se4@C are shown in Fig.…”
Section: Resultsmentioning
confidence: 95%
“…The pattern exhibits a group of distinct diffraction peaks, which can be well assigned to a monoclinic FeNi2Se4 phase (PDF#04-006-5240) [31,32] , indicating the high crystallinity and purity of the synthesized product. The SEM images of FeNi2Se4@C are shown in Fig.…”
Section: Resultsmentioning
confidence: 95%
“…Besides, we further normalized current density by the ECSA and the ECSA is evaluated by C dl in terms of the equation: ECSA = C dl /C s . [47] Figure 3f present the normalized OER LSV curves of Fe-InOOH, FeOOH and InOOH by ECSA, the normalized activity of Fe-InOOH catalyst still shows much higher than that of InOOH, indicating that the factors other than the ECSA also related to the enhanced OER activity, which can attribute to the strategy of Fe doping enhances the intrinsic activity toward OER not just increases the active surface area. To probe and compare the intrinsic activity of Fe-InOOH with other electrodes, the turnover frequency (TOF) for each active site of Fe-InOOH, InOOH and FeOOH were measured at 50 mV s À 1 in 1.0 M solution PBS (pH = 7.0), as shown in ( Figure S8).…”
Section: Resultsmentioning
confidence: 97%
“…The Fe‐InOOH catalyst has a larger electrochemically active surface area and can provide more active sites exposed to the electrolyte, which is compatible with the above‐mentioned results. Besides, we further normalized current density by the ECSA and the ECSA is evaluated by C dl in terms of the equation: ECSA=C dl /C s . Figure f present the normalized OER LSV curves of Fe‐InOOH, FeOOH and InOOH by ECSA, the normalized activity of Fe‐InOOH catalyst still shows much higher than that of InOOH, indicating that the factors other than the ECSA also related to the enhanced OER activity, which can attribute to the strategy of Fe doping enhances the intrinsic activity toward OER not just increases the active surface area.…”
Section: Resultsmentioning
confidence: 99%
“…In terms of mechanism research, good development has not been achieved [68]. The main reason is that in the aqueous environment among others, the relationship between the solid phase catalyst, the oxidant, and the target reactant is complicated, and, currently, no studies have been able to provide explicit information on the relationship between the three in the reaction process [83,84]. Under such circumstances, although the developed effective catalyst can achieve the conditions of high efficiency and low energy consumption, it is usually accompanied by disadvantages such as many components, high cost, and complicated preparation.…”
Section: The Current Status Of Nano Researchmentioning
confidence: 99%