Directing in-situ self-optimization of single-atom catalysts for improved oxygen evolution

Ma, Peiyu; Chen, Feng; Chen, Huihuang; Xue, Jiawei; Ma, Xinlong; Cao, Heng; Wang, Dongdi; Zuo, Ming J.; Wang, Ruyang; Ding, Xilan; Zhou, Shiming; Zhang, Zhirong; Zeng, Jie; Bao, Jun

doi:10.1016/j.jechem.2022.12.051

Cited by 6 publications

(3 citation statements)

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“…The leaching of F ions generated an amorphous edge surface, which provides more oxygen vacancy to anchor Ir single atoms (Figures 2G–J). In the meanwhile, the anionic leaching elevated the Co valence state of Ir 1 /CoOOH(F) more significantly than the Ir 1 /CoOOH, which strengthened the adsorption of oxygenated intermediates [51] . Inducing structural reconstruction is also an effective strategy to enhance their stability.…”

Section: The Role and Regulating Strategies Of Structural Reconstructionmentioning

confidence: 99%

“…In the meanwhile, the anionic leaching elevated the Co valence state of Ir 1 /CoOOH(F) more significantly than the Ir 1 /CoOOH, which strengthened the adsorption of oxygenated intermediates. [51] Inducing structural reconstruction is also an effective strategy to enhance their stability. For instance, Liu et al adopted a deep reconstruction strategy to reconstruct Ni@NiOOH into DR-NiOOH.…”

Section: Generating Optimal Active Sitesmentioning

confidence: 99%

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Structural Reconstruction Chemistry for Alkaline Oxygen Evolution Catalysts

Ma,

Jia,

Zhang

et al. 2024

ChemElectroChem

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Developing efficient and stable catalysts for energy conversion processes such as alkaline oxygen evolution reaction is one of the key measures to solve the energy shortage problems. During alkaline oxygen evolution, several electrocatalysts would undergo structural reconstruction from the pre‐catalyst state to the real‐catalyst state. The structural reconstruction may modify the quantity and characterizations of the active sites, thus affecting the configuration and adsorption strength of the reaction key intermediates, which directly influence the activity and stability of the electrocatalysts. Understanding the structural transformation chemistry is essential for the rational design of highly efficient and stable electrocatalysts. In this review, we have deeply discussed the role and regulation strategies of structural reconstruction. Then, on this basis, we described some characterization technologies to probe the structural reconstruction of catalysts during alkaline OER. Finally, we put forward some views on the future research direction of this vital field.

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Section: The Role and Regulating Strategies Of Structural Reconstructionmentioning

confidence: 99%

Section: Generating Optimal Active Sitesmentioning

confidence: 99%

Structural Reconstruction Chemistry for Alkaline Oxygen Evolution Catalysts

Ma,

Jia,

Zhang

et al. 2024

ChemElectroChem

Self Cite

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show abstract

“…20 Such fundamental understanding behind the effectiveness of Ir-based catalyst systems has also been supported with deciding factors like geometric, electronic, defect-engineering, and support effects. 26,27 In particular, the atomic stabilization of Ir on 1D and 2D-material-based supports 28,29 has shown the formation of OER intermediates with a reduced free energy barrier. 30,31 The foregoing discussion on the mechanistic understanding of OER activity in heterogeneous as well as homogeneous catalyst systems has created an intermediate viewpoint to disintegrate the catalytic pathway for Ir-based single atom catalysts.…”

Section: Introductionmentioning

confidence: 99%