Rationalizing the Influence of the Mn(IV)/Mn(III) Red-Ox Transition on the Electrocatalytic Activity of Manganese Oxides in the Oxygen Reduction Reaction

Ryabova, Anna S.; Napolskiy, Filipp S.; Schott, Tiphaine; Istomin, S.Ya.; Bonnefont, Antoine; Antipin, Denis; Baranchikov, А. Е.; Levin, Eduard E.; Abakumov, Artem M.; Kéranguéven, Gwénaëlle; Antipov, Evgeny V.; Tsirlina, Galina A.; Savinova, Elena R.

doi:10.1016/j.electacta.2015.11.012

Cited by 106 publications

(131 citation statements)

References 54 publications

(57 reference statements)

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“…LaMnO 3 features two cathodic reduction peaks, located at 0.90 and 0.50 V, related to the reduction of Mn from an oxidation state + 3.2 (as determined in Fig. 3c) to 2+ [14,15,18]. The CV of CaMnO 3 is characterised by a broad reduction peak, ascribed to the reduction of + 4 to + 2 [14,43,44].…”

Section: Resultsmentioning

confidence: 99%

AMnO3 (A = Sr, La, Ca, Y) Perovskite Oxides as Oxygen Reduction Electrocatalysts

et al. 2018

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A series of perovskite-type manganites AMnO 3 (A = Sr, La, Ca and Y) particles were investigated as electrocatalysts for the oxygen reduction reaction. AMnO 3 materials were synthesized by means of an ionic-liquid method, yielding phase pure particles at different temperatures. Depending on the calcination temperature, particles with mean diameter between 20 and 150 nm were obtained. Bulk versus surface composition and structure are probed by X-ray photoelectron spectroscopy and extended X-ray absorption fine structure. Electrochemical studies were performed on composite carbon-oxide electrodes in alkaline environment. The electrocatalytic activity is discussed in terms of the effective Mn oxidation state, A:Mn particle surface ratio and the Mn-O distances.

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Section: Resultsmentioning

confidence: 99%

AMnO3 (A = Sr, La, Ca, Y) Perovskite Oxides as Oxygen Reduction Electrocatalysts

et al. 2018

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“…The specific ORR electrocatalytic activity of MnOx increases exponentially with the potential of the Mn 4+ /Mn 3+ redox couple and MnOOH/Mn 2 O 3 has a higher formal potential than MnO 2 for this transition. 50 Therefore, the better ORR activity of MnOx/Co-Fe compared with MnOx may be due to the change in oxidation state from Mn 4+ to Mn 3+ as demonstrated in the XPS analysis. The addition of Ni(OH) 2 into MnOx by reducing an amorphous MnO 2 /C suspension, in the presence of Ni 2+ with NaBH 4 , has also been reported to stabilize the morphology and phase of the active material.…”

Section: Resultsmentioning

confidence: 99%

Sequentially Electrodeposited MnO_X/Co-Fe as Bifunctional Electrocatalysts for Rechargeable Zinc-Air Batteries

Xiong

Ivey

2017

J. Electrochem. Soc.

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Manganese oxide (MnOx) and cobalt-iron (Co-Fe) were sequentially electrodeposited onto a gas diffusion layer (GDL) as bifunctional electrocatalysts for rechargeable zinc-air batteries. The fabricated material was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The sequentially deposited MnOx/Co-Fe catalysts, tested using cyclic voltammetry (CV), showed activity for both the oxygen reduction and oxygen evolution reactions (ORR and OER), with better performance than either MnOx or Co-Fe alone. The fabricated material was assembled into a zinc-air battery as the air electrode component for battery cycling tests. The zinc-air battery using MnOx/Co-Fe catalysts exhibited good discharge-recharge performance and a cycling efficiency of 59.6% at 5 mA cm −2 , which is comparable to Pt/C catalysts. In addition, the electrodeposited MnOx/Co-Fe layer showed strong adhesion to the gas diffusion layer (GDL) and was structurally stable throughout 40 h of battery cycling.

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“…Mn oxides containing Mn 3+ in addition to Mn 2+ or Mn 4+ were identified as the most active for ORR [26], where the 3+/4+ redox is particularly important for Mn-based perovskites [163]. Direct evidence of the active valence by X-ray based methods is rare for the ORR in alkaline media.…”

Section: The Mechanisms Of Oxygen Reduction On Perovskite Oxidesmentioning

confidence: 99%

“…Reduction of perovskites significantly below Mn 3+ would require the formation of oxygen vacancies or change in the composition of the A-site for charge neutrality. Perovskite oxides such as LaMnO3 exhibit redox peaks at similar voltages to binary Mn oxides [163] and it was found that the most Hydroxide is the only desired product of the ORR in fuel cells and (aqueous) metal-air batteries but peroxide production is also frequently observed on composite electrodes of perovskite oxides [57,92,95]. Furthermore, perovskites containing Mn, Fe, and Co are known to chemically decompose peroxide [160][161][162].…”

Section: The Mechanisms Of Oxygen Reduction On Perovskite Oxidesmentioning

confidence: 99%

Perovskite Electrocatalysts for the Oxygen Reduction Reaction in Alkaline Media

Risch

2017

Catalysts

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Abstract:Oxygen reduction is considered a key reaction for electrochemical energy conversion but slow kinetics hamper application in fuel cells and metal-air batteries. In this review, the prospect of perovskite oxides for the oxygen reduction reaction (ORR) in alkaline media is reviewed with respect to fundamental insight into activity and possible mechanisms. For gaining these insights, special emphasis is placed on highly crystalline perovskite films that have only recently become available for electrochemical interrogation. The prospects for applications are evaluated based on recent progress in the synthesis of perovskite nanoparticles. The review concludes with the current understanding of oxygen reduction on perovskite oxides and a perspective on opportunities for future fundamental and applied research.

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Rationalizing the Influence of the Mn(IV)/Mn(III) Red-Ox Transition on the Electrocatalytic Activity of Manganese Oxides in the Oxygen Reduction Reaction

Cited by 106 publications

References 54 publications

AMnO3 (A = Sr, La, Ca, Y) Perovskite Oxides as Oxygen Reduction Electrocatalysts

AMnO3 (A = Sr, La, Ca, Y) Perovskite Oxides as Oxygen Reduction Electrocatalysts

Sequentially Electrodeposited MnO_X/Co-Fe as Bifunctional Electrocatalysts for Rechargeable Zinc-Air Batteries

Perovskite Electrocatalysts for the Oxygen Reduction Reaction in Alkaline Media

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Rationalizing the Influence of the Mn(IV)/Mn(III) Red-Ox Transition on the Electrocatalytic Activity of Manganese Oxides in the Oxygen Reduction Reaction

Cited by 106 publications

References 54 publications

AMnO3 (A = Sr, La, Ca, Y) Perovskite Oxides as Oxygen Reduction Electrocatalysts

AMnO3 (A = Sr, La, Ca, Y) Perovskite Oxides as Oxygen Reduction Electrocatalysts

Sequentially Electrodeposited MnOX/Co-Fe as Bifunctional Electrocatalysts for Rechargeable Zinc-Air Batteries

Perovskite Electrocatalysts for the Oxygen Reduction Reaction in Alkaline Media

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Sequentially Electrodeposited MnO_X/Co-Fe as Bifunctional Electrocatalysts for Rechargeable Zinc-Air Batteries