Accelerated active phase transformation of NiO powered by Pt single atoms for enhanced oxygen evolution reaction

Lin, Chao; Zhao, Yue; Zhang, Haojie; Xie, Songhai; Li, Yefei; Li, Xiaopeng; Jiang, Zheng; Liu, Zhi-Pan

doi:10.1039/c8sc02015a

Cited by 101 publications

(103 citation statements)

References 66 publications

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“…[46] For example, Pt/Ni can be synthesized through atomic-layer deposition with the precise controlo f the Pt loading. [47] Moreover,h igh-temperature vapor,i on implantation, and the ion-exchangem ethod can be applied to synthesize WOCs.…”

Section: Other Methodsmentioning

confidence: 99%

“…Some single-atom alloys, such as AgCu, can be obtained by means of the solid meltingm ethod. [47] Moreover,h igh-temperature vapor,i on implantation, and the ion-exchangem ethod can be applied to synthesize WOCs. The mass-selected soft-landing methodi saphysicala dsorption method and can control the metal/metal oxide nanoparticles ize precisely,w hichm akes the preparation of single-atom WOCs possible.…”

Section: Chemical Reductiona Nd Oxidationmentioning

confidence: 99%

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Mono‐/Multinuclear Water Oxidation Catalysts

Zhang

Guan

2019

ChemSusChem

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Water splitting, in which water molecules can be transformed into hydrogen and oxygen, is an appealing energy conversion and transformation strategy to address the environmental and energy crisis. The oxygen evolution reaction (OER) is dynamically slow, which limits energy conversion efficiency during the water‐splitting process and requires high‐efficiency water oxidation catalysts (WOCs) to overcome the OER energy barrier. It is generally accepted that multinuclear WOCs possess superior OER performances, as demonstrated by the CaMn4O5 cluster in photosystem II (PSII), which can catalyze the OER efficiently with a very low overpotential. Inspired by the CaMn4O5 cluster in PSII, some multinuclear WOCs were synthesized that could catalyze water oxidation. In addition, some mononuclear molecular WOCs also show high water oxidation activity. However, it cannot be excluded that the high activity arises from the formation of dimeric species. Recently, some mononuclear heterogeneous WOCs showed a high water oxidation activity, which testified that mononuclear active sites with suitable coordination surroundings could also catalyze water oxidation efficiently. This Review focuses on recent progress in the development of mono‐/multinuclear homo‐ and heterogeneous catalysts for water oxidation. The active sites and possible catalytic mechanisms for water oxidation on the mono‐/multinuclear WOCs are provided.

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Section: Other Methodsmentioning

confidence: 99%

Section: Chemical Reductiona Nd Oxidationmentioning

confidence: 99%

Mono‐/Multinuclear Water Oxidation Catalysts

Zhang

Guan

2019

ChemSusChem

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“…They ascribed the significantly increased HER activity to the introduced S vacancies, the phase transition from 2H to 1T, and the new formed PdS sites. Liu and co‐workers synthesized the atomic Pt doping into the bulk crystalline phase of NiO (0.5 wt% Pt/NiO) by a wet‐chemistry method . During the electrocatalytic OER, they found that Pt doping can facilitate the phase transformation from NiO to active NiOOH.…”

Section: Applications In Electrocatalytic Water Splittingmentioning

confidence: 99%

“…X‐ray photoelectron spectroscopy (XPS) depth profiles for c) pure NiO, d) 0.5 wt% Pt/NiO, and e) ALD‐Pt/NiO after 500 electrochemical cycles. Reproduced with permission . Copyright 2018, The Royal Society of Chemistry.…”

Section: Applications In Electrocatalytic Water Splittingmentioning

confidence: 99%

Insights into Single‐Atom Metal–Support Interactions in Electrocatalytic Water Splitting

2019

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Electrochemical water splitting is a promising approach for energy conversion and storage. The exploration of low‐cost, efficient, and durable electrocatalysts is of great significance for realizing a large‐scale application and forming a sustainable chemistry. Recently single‐atom catalysts (SACs), with isolated metal atoms anchored on supports, exhibit distinctive performances for electrocatalytic water splitting. Single‐atom catalysis is emerging as a new frontier for bridging the homogeneous and heterogeneous catalyses. Therefore, the synthesis of SACs with excellent durability is highly desirable but challenging. Here, recent progress of SACs in supports and synthetic strategies, characterization techniques, and the electrochemical application toward water splitting is summarized. Fully understanding the interactions between the single‐atom metal and the support is extremely important for the design and preparation of highly stable SACs as well as the improvement of electrocatalytic activity, which are particularly discussed in this context. Finally, the current challenges and future opportunities for the development of this field are discussed.

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“…Paradoxically, analogous δ‐MnO 2 synthesized under hydrothermal conditions shows a low OER activity with an overpotential of 0.74 V . Likewise, both spinel Co 3 O 4 and rock salt NiO were found to undergo the same spinel‐to‐layer phase transition, yielding the same active phases, namely, β‐CoOOH and γ‐NiOOH, respectively, for the OER. These findings indicate that in situ phase transitions over 3 d oxides are closely related to the high OER activity.…”

Section: Introductionmentioning

confidence: 99%

First‐Principles Simulations for Morphology and Structural Evolutions of Catalysts in Oxygen Evolution Reaction

2019

ChemSusChem

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to demonstrate how first-principles calculations can predict the morphology of nanoparticles, explore the pathway of electrochemically induced phase transition, and resolve the structure of ah eterojunction. With these new theoretical techniques, the structure-activity relationship of the OER for a complex catalytic system can be determinedw ithoute xperimentali nputs. Such ab ottom-up strategy holds great promise to reveal the active site and mechanism of ac omplex catalytic system from first-principles calculations.

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Accelerated active phase transformation of NiO powered by Pt single atoms for enhanced oxygen evolution reaction

Abstract: Pt single atoms have unique power in enhancing and accelerating OER active NiOOH phase transformation from NiO.

Cited by 101 publications

References 66 publications

Mono‐/Multinuclear Water Oxidation Catalysts

Mono‐/Multinuclear Water Oxidation Catalysts

Insights into Single‐Atom Metal–Support Interactions in Electrocatalytic Water Splitting

First‐Principles Simulations for Morphology and Structural Evolutions of Catalysts in Oxygen Evolution Reaction

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