pH dependence of OER activity of oxides: Current and future perspectives

Giordano, Livia; Han, Binghong; Risch, Marcel; Hong, Wonbin; Rao, Reshma R.; Stoerzinger, Kelsey A.; Shao‐Horn, Yang

doi:10.1016/j.cattod.2015.10.006

Cited by 366 publications

(373 citation statements)

References 56 publications

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“…The charge-transfer strategy is complex for fuel cells or water electrolysis because the reactants and products are pH-dependent [83,84]. Y. Shao-Horn et al investigated the role of charge transfer on catalytic activity in an alkaline environment by varying Sr substitution of La (1−x) Sr x MnO 3 [85] and found that OER activity of perovskite catalysts can be enhanced by reducing the charge-transfer energy [63,65].…”

Section: Charge Transfermentioning

confidence: 99%

Adsorption-energy-based activity descriptors for electrocatalysts in energy storage applications

Wang

Qiu

Song

et al. 2017

National Science Review

166

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Energy storage technologies, such as fuel cells, ammonia production and lithium-air batteries, are important strategies for addressing the global challenge of energy crisis and environmental pollution. Taking overpotential as a direct criterion, we illustrate in theory and experiment that the adsorption energies of charged species such as Li + +e − and H + +e − are a central parameter to describe catalytic activities related to electricity-in/electricity-out efficiencies. The essence of catalytic activity is revealed to relate with electronic coupling between catalysts and charged species. Based on adsorption energy, some activity descriptors such as d-band center, e g -electron number and charge-transfer capacity are further defined by electronic properties of catalysts that directly affect interaction between catalysts and charged species. The present review is helpful for understanding the catalytic mechanisms of these electrocatalytic reactions and developing accurate catalytic descriptors, which can be employed to screen high-activity catalysts in future high-throughput calculations and experiments.

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Section: Charge Transfermentioning

confidence: 99%

Adsorption-energy-based activity descriptors for electrocatalysts in energy storage applications

Wang

Qiu

Song

et al. 2017

National Science Review

166

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“…On the RHE scale, this is obtained at constant overpotential of oxygen electrocatalysis, whereas the free energy is constant on the NHE scale. Reported reactiono rders of the OER spread considerably in the literature [73] and can have fractional values, which may be owed to side reactions or competing intermediates on the NHE scale. Additionally,T afel slopes that are not multiples of 59 mV will result in fractional reaction orders on the RHE scale.…”

Section: à1 ð2þmentioning

confidence: 99%

“…In the voltage range of the ring, the reaction order of the disk decreases towardn egative values, which could be due to changes in the Ta fel slope or as ide reactions uch as the aforementioned delithiation. [30,73] respectively.T hese values are similartot he reaction order at the LiMn 2 O 4 disk.…”

Section: Possible Reactions Involving Mnomentioning

confidence: 99%

“…The electrocatalytic mechanism of oxygen evolutioni sd efined by three partial derivatives that relate the key parameters of the reaction kinetics: [73] ð@E=@pHÞ i ¼ Àð@E=@log ½iÞ pH Â ð@log i=@pHÞ E ð1Þ…”

mentioning

confidence: 99%

“…At standard conditions, the Nernsts lope on these two scales can be converted using: [25,73] ð@E NHE =@pHÞ i ¼ð@E RHE =@pHÞ i þ 59 mV pH…”

mentioning

confidence: 99%

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Cover Feature: Mechanistic Parameters of Electrocatalytic Water Oxidation on LiMn₂O₄ in Comparison to Natural Photosynthesis (ChemSusChem 22/2017)

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The Cover Feature shows bio‐inspired electrocatalysis for the oxygen evolution reaction on LiMn2O4 nanocrystals. The electrocatalyst shares the cubane motif with the active site of photosystem II and the valence of Mn3.5+ with the dark‐stable state of natural photosynthesis. These commonalities allow discussion of the electrocatalytic mechanism of LiMn2O4 in the context of natural photosynthesis. More information can be found in the Full Paper by Köhler et al. on page 4479 in Issue 22, 2017 (DOI: 10.1002/cssc.201701582).

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Aqueous Zinc Batteries

Clark

Borchers

Jusys

et al. 2020

Encyclopedia of Electrochemistry

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Zinc batteries were invented in the eighteenth century, but are still in widespread use as primary commercial batteries known as aqueous alkaline batteries. In this article, we discuss the state of the art of rechargeable aqueous zinc batteries. On the one side of the battery cell, porous zinc metal electrodes offer high energy and power densities. On the other side, zinc‐air batteries perform oxygen electrocatalysis in air electrodes, while zinc‐ion batteries use intercalation electrodes. These electrodes are connected by aqueous alkaline or aqueous neutral electrolytes. We introduce the basic history, concepts, and challenges of each technology. Our overview is spiced with some details of current research.

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pH dependence of OER activity of oxides: Current and future perspectives

Cited by 366 publications

References 56 publications

Adsorption-energy-based activity descriptors for electrocatalysts in energy storage applications

Adsorption-energy-based activity descriptors for electrocatalysts in energy storage applications

Cover Feature: Mechanistic Parameters of Electrocatalytic Water Oxidation on LiMn₂O₄ in Comparison to Natural Photosynthesis (ChemSusChem 22/2017)

Aqueous Zinc Batteries

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pH dependence of OER activity of oxides: Current and future perspectives

Cited by 366 publications

References 56 publications

Adsorption-energy-based activity descriptors for electrocatalysts in energy storage applications

Adsorption-energy-based activity descriptors for electrocatalysts in energy storage applications

Cover Feature: Mechanistic Parameters of Electrocatalytic Water Oxidation on LiMn2O4 in Comparison to Natural Photosynthesis (ChemSusChem 22/2017)

Aqueous Zinc Batteries

Contact Info

Product

Resources

About

Cover Feature: Mechanistic Parameters of Electrocatalytic Water Oxidation on LiMn₂O₄ in Comparison to Natural Photosynthesis (ChemSusChem 22/2017)