Recent advances in activating surface reconstruction for the high-efficiency oxygen evolution reaction

Gao, Likun; Cui, Xun; Sewell, Christopher D.; Li, Jian; Lin, Zhiqun

doi:10.1039/d0cs00962h

Cited by 645 publications

(421 citation statements)

References 228 publications

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“…The corresponding E on-set and E 1/2 of NPC-2 were reaching 0.95 V vs RHE and 0.87 V vs RHE respectively, these values are comparable with those of commercial Pt/C (20 wt%) catalyst. [38] The ORR activity of NPC-2 is comparable to that of many previously reported carbon-based catalysts, as listed in Table S1.. Furthermore, the Tafel slopes of NPC-2 is 88.42 mV dec À 1 (Figure 4C), which was similar to that of Pt/C catalyst (about 60 ∼ 80 mV dec À 1 ), indicating the fast reaction kinetics of ORR.…”

Section: Resultssupporting

confidence: 77%

L–Cysteine Modulated ZIF for Deriving Nitrogen‐Doped Porous Carbon: A Highly Efficient and Stable Electrocatalyst for Oxygen Reduction Reactions

et al. 2022

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Zeolitic Imidazolate Frameworks (ZIFs) derived nitrogen-doped porous carbon (NPC) materials have been proposed as promising metal-free electrocatalysts for oxygen reduction reactions (ORR). Herein, we report a strategy to control the morphology of ZIF-8 and ZIF material-derived NPC materials by the amount of L-cysteine. The prepared NPC electrocatalysts exhibit different morphologies and ORR properties. The best of these catalysts exhibited a nanosheet-like morphology with an onset potential of 0.95 V and a half-wave potential of 0.87 V in alkaline media, which are comparable to those of commercial Pt/C (20 wt%) catalysts. In addition, this catalyst exhibited high stability and methanol resistance. This work not only reveals the effect of L-cysteine amount on the growth process of ZIF, but also provides a strategy for designing various excellent catalysts in the fuel cell field.

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Section: Resultssupporting

confidence: 77%

L–Cysteine Modulated ZIF for Deriving Nitrogen‐Doped Porous Carbon: A Highly Efficient and Stable Electrocatalyst for Oxygen Reduction Reactions

et al. 2022

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“…Oxygen electrocatalysis plays a critical role in the practical operation of clean and sustainable electrochemical energy conversion technologies. 1–5 In particular, as the most important electrode process in fuel cells and metal–air batteries, the oxygen reduction reaction (ORR) has been the research hotspot in the past few decades. 6–10 To date, platinum (Pt)-based materials have been widely recognised as state-of-the-art ORR electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis-free synthesis of single-atom cobalt catalysts for efficient oxygen reduction

Cui

Wang

et al. 2022

J. Mater. Chem. A

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“…Chloride can generate new exposed Au sites by removing Au oxides. [19] As a result, reactivation was observed at the corner and the edge. [2a, 24] Such restructuring in catalytic system plays an important role in the functioning of catalyst.…”

Section: Methodsmentioning

confidence: 99%

Operando Imaging of Chemical Activity on Gold Plates with Single‐Molecule Electrochemiluminescence Microscopy

Dong

Zhang

et al. 2022

Angew Chem Int Ed

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Classical electrochemical characterization tools cannot avoid averaging between the active reaction sites and their support, thus obscuring their intrinsic roles. Single-molecule electrochemical techniques are thus in high demand. Here, we demonstrate superresolution imaging of Ru(bpy) 3 2 + based reactions on Au plates using single-molecule electrochemiluminescence microscopy. By converting electrochemical signals into optical signals, we manage to achieve the ultimate sensitivity of single-entity chemistry, that is directly resolving the single photons from individual electrochemical reactions. High spatial resolution, up to 37 nm, further enables mapping Au chemical activity and the reaction kinetics. The spatiotemporally resolved dynamic structure-activity relationship on Au plates shows that the restructuring of catalysts plays an important role in determining the reactivity. Our approach may lead to gaining new insights towards evaluating and designing electrocatalytic systems.

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Recent advances in activating surface reconstruction for the high-efficiency oxygen evolution reaction

Abstract: The recent progress in activating surface reconstruction by integrating advanced characterizations with theoretical calculations for high-efficiency oxygen evolution reaction is reviewed.

Cited by 645 publications

References 228 publications

L–Cysteine Modulated ZIF for Deriving Nitrogen‐Doped Porous Carbon: A Highly Efficient and Stable Electrocatalyst for Oxygen Reduction Reactions

L–Cysteine Modulated ZIF for Deriving Nitrogen‐Doped Porous Carbon: A Highly Efficient and Stable Electrocatalyst for Oxygen Reduction Reactions

Pyrolysis-free synthesis of single-atom cobalt catalysts for efficient oxygen reduction

Operando Imaging of Chemical Activity on Gold Plates with Single‐Molecule Electrochemiluminescence Microscopy

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