Stability and deactivation of OER electrocatalysts: A review

Zeng, Feng; Mebrahtu, Chalachew; Liao, Longfei; Beine, Anna Katharina; Palkovits, Regina

doi:10.1016/j.jechem.2022.01.025

Cited by 308 publications

(146 citation statements)

References 259 publications

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“…The unrestricted consumption of traditional fossil fuels not only aggravates the global energy crisis but also causes significant damage to the natural ecological environment [1][2][3][4] . Therefore, it is extremely urgent to push forward extensive research into renewable clean energy sources, such as solar energy, wind energy, H 2 energy, and so on [5][6][7][8][9] , as alternatives for non-renewable fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in earth-abundant first-row transition metal (Fe, Co and Ni)-based electrocatalysts for the oxygen evolution reaction

Chen¹,

Liu²,

Yuan³

et al. 2022

Energy Mater

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The oxygen evolution reaction (OER) is of fundamental importance as a half reaction and rate-controlling step that plays a predominant function in improving the energy storage and conversion efficiency during the electrochemical water-splitting process. In this review, after briefly introducing the fundamental mechanism of the OER, we systematically summarize the recent research progress for nonprecious-metal-based OER electrocatalysts of representative first-row transition metal (Fe, Co and Ni)-based composite materials. We analyze the effects of the physicochemical properties, including morphologies, structures and compositions, on the integrated performance of these OER electrocatalysts, with the aim of determining the structure-function correlation of the electrocatalysts in the electrochemical reaction process. Furthermore, the prospective development directions of OER electrocatalysts are also illustrated and emphasized. Finally, this mini-review highlights how systematic introductions will accelerate the exploitation of high-efficiency OER electrocatalysts.

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Section: Introductionmentioning

confidence: 99%

Recent advances in earth-abundant first-row transition metal (Fe, Co and Ni)-based electrocatalysts for the oxygen evolution reaction

Chen¹,

Liu²,

Yuan³

et al. 2022

Energy Mater

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“…To improve the efficiency of the overall sluggish OER, there is a need for an efficient, inexpensive catalyst to reduce the kinetic barrier of the reaction. The main focus of research in this area is in the optimization of catalysts to reduce the overpotential and improve efficiency, as well as elucidation of reaction mechanisms [55].…”

Section: Catalysts For Oermentioning

confidence: 99%

Section: Catalysts For Oermentioning

confidence: 99%

“…Generally, catalyst activity inversely correlates with its stability [55]. Deactivation of catalysts during OER may proceed through various mechanisms, such as dissolution, phase and morphology change, and detachment of catalyst from the electrodes [55]. For most of the active part of the catalysts, complex surface reconstruction and amorphization occurs, as well as the dissolution of specific elements due to the harsh acidic environment [59][60][61][62].…”

Section: Catalysts For Oermentioning

confidence: 99%

“…In the case of catalysts for OER, there are remaining questions on the relation between structural evolution of the catalysts and electrochemical response. Even though the surface reconstruction is commonly observed during OER, it is important to evaluate the true nature of the newly formed surface structures during the reaction [55]. Previous work on La2LiIrO6 has established the correlation between the electrochemical performance during OER and the surface stability within the first 50 cycles [157].…”

Section: Questions To Answer Based On Literaturementioning

confidence: 99%

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Revealing nanoscale lithiation and dissolution pathways by in situ cryogenic electron microscopy

Tiukalova¹

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Materials for energy storage and conversion devices are of high importance to meet future industrial energy demands. Detailed understanding of chemical processes occurring at the solid/liquid interfaces and alterations of the structure at the atomic scale is critical for the design and development of future devices. This Ph.D. work focuses on two central systems of particular relevance for energy applications, i.e., LiNi0.5Mn1.5O4 Li-ion battery cathode material and two catalysts (La2LiIrO6, ZnCo1.2Ni0.8O4) for the oxygen evolution reaction (OER) applications. Through a deep understanding of the evolution of the structure at the local atomic scale, the overall aim is to get insights into the atomic structure-property relationship to improve our understanding and provide information that will help develop materials capable of higher capacity, longer lifetime, and overall better performance.During operation, electrochemical reactions introduce structural and chemical changes to the active materials that are not necessarily reversible. These alterations cause degradation of the device performance and limit their lifetime. A detailed understanding of the correlation between electrochemical processes and atomic-scale transformations is essential to improve the performance of the devices. Owing to its high-resolution transmission electron microscopy (TEM) -based imaging and spectroscopic analysis is able to provide unique information that is not available with other methods. In addition, with the recent development of dedicated in situ and operando TEM-capabilities, it is possible to observe structural changes under the application of external stimuli such as at cryogenic temperature or presence of a liquid electrolyte, allowing to study dynamical processes in their native operation environment. The development of in situ cryogenic temperature stages for materials science applications has opened up many new possibilities, including learning new information about beam-sensitive materials that are challenging to characterize with conventional room temperature imaging at the atomic level. This Ph.D. work focuses on three material systems studied in detail under various HR(S)TEM and spectroscopy methods: LiNi0.5Mn1.5O4 as a promising cathode material, ZnCo1.2Ni0.8O4 and La2LiIrO6 as catalysts for OER. It was found that LiNi0.5Mn1.5O4

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A Review on MXene as Promising Support Materials for Oxygen Evolution Reaction Catalysts

Anne

Kundu

Kabiraz

et al. 2023

Adv Funct Materials

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The harsh operating conditions of the oxygen evolution reaction (OER) in water electrolysis severely degrade the activity and stability of the electrocatalysts due to elemental leaching or particle agglomeration. Therefore, it is crucial to incorporate support materials that effectively immobilize catalyst particles for developing efficient OER catalysts. This review aims to highlight the role of MXene as a support material to improve the performance of OER catalysts. First, the extended OER mechanism is briefly described in terms of the effect of MXene support on OER catalysts. Then, various synthesis methods of MXene and catalyst‐MXene compounds are introduced, and important properties of MXene that are beneficial to improve OER performances are discussed. The electrocatalytic results of the enhanced OER catalysts due to the effective MXene support are also summarized. Finally, future challenges and prospects are proposed for utilizing MXene as an excellent support material for various electrocatalysis.

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Stability and deactivation of OER electrocatalysts: A review

Cited by 308 publications

References 259 publications

Recent advances in earth-abundant first-row transition metal (Fe, Co and Ni)-based electrocatalysts for the oxygen evolution reaction

Recent advances in earth-abundant first-row transition metal (Fe, Co and Ni)-based electrocatalysts for the oxygen evolution reaction

Revealing nanoscale lithiation and dissolution pathways by in situ cryogenic electron microscopy

A Review on MXene as Promising Support Materials for Oxygen Evolution Reaction Catalysts

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