Exploring an effective oxygen reduction reaction catalyst via 4e− process based on waved-graphene

Cao, Lujie; Yang, Mingyang; Lu, Zhouguang; Pan, Hui

doi:10.1007/s40843-017-9070-1

Cited by 12 publications

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References 51 publications

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“…[147] The adsorption energy of O 2 at the top of ripple position was calculated as to be −0.09, −0.36, and −0.62 eV under compressions of 30%, 40%, and 50%, respectively, the latter two of which being larger than the O 2 adsorption energy on N-doped graphene (−0.20 eV). [147,148] Upon N-doping waved graphene, O 2 adsorption energy with 30%, 40%, and 50% compression changed to −0.83, −1.05, and −1.22 eV, respectively, suggesting improved binding abilities. [147] All of these cases are also marked by significant charge transfer from the waved graphene to the O 2 molecule, sometimes as close to one electron.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…[146] In 2017, Pan et al reported DFT calculations of the ORR on waved graphene. [147] The adsorption energy of O 2 at the top of ripple position was calculated as to be −0.09, −0.36, and −0.62 eV under compressions of 30%, 40%, and 50%, respectively, the latter two of which being larger than the O 2 adsorption energy on N-doped graphene (−0.20 eV). [147,148] Upon N-doping waved graphene, O 2 adsorption energy with 30%, 40%, and 50% compression changed to −0.83, −1.05, and −1.22 eV, respectively, suggesting improved binding abilities.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…Copyright 2015, American Chemical Society; h) a proposed model of waved graphene for ORR (C atoms displayed in two different colors); i) the proposed ORR pathways (highlighted) of the waved graphene. (h,i) are reproduced with permission [147]. Copyright 2017, Springer Nature.…”

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Engineering Carbon Materials for Electrochemical Oxygen Reduction Reactions

Lin

Miao

Wallace

et al. 2021

Advanced Energy Materials

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exchange membrane fuel cells (PEMFCs) and metal-air batteries, the ORR starts from the adsorption of O 2 molecules at the cathode, electrochemical activation of the OO bond, and then the formation of O-containing groups such as OOH*, O*, and OH*. In this way, O 2 is reduced by the electrons (Figure 1a). [4] The efficiency of these energy devices is usually determined by that of the ORR process. However, the strong bond energy of OO (498 kJ mol −1 ) means that the ORR at the electrode is not easy, especially compared to the hydrogen oxidation reaction (HOR: H 2 →2H + + 2e − ) at the anode of hydrogen-oxygen fuel cells (Figure 1a). Improvement of OO bond activation and cleavage with catalysts is therefore highly important in developing efficient energy storage and conversion systems as well as fast and efficient chemical production techniques.Nevertheless, in industry, the most common ORR catalysts are still Pt-based materials, which are prohibitively expensive for wider application (Figure 1b). [5] There is a pressing need to explore alternative electrocatalysts that are cheap and stable. Significant efforts have been made to develop alternative materials (e.g., transition metal oxides, alloys, metal-organic frameworks/MOFs, single atom catalyst) and investigate their catalytic mechanisms, [6][7][8][9][10][11][12] but challenges remain. In 2009, Dai's group reported using doped carbon nanotubes (CNTs) to catalyze ORR that exhibited better catalytic efficiency than commercial Pt/C electrodes in alkaline media. [13] It should be noted that, in alkaline media, the hydroxide conducting polymeric membranes (e.g., in anion exchange membrane fuel cells) are unstable and have poor resistance to CO 2 , while the overpotentials for hydrogen oxidation are also high. [14][15][16] Compared to metal-based catalysts, carbon materials have significant merits of outstanding anti-corrosion performance and electrochemical durability, as well as the possibility of low-cost manufacture. This combination means that carbon materials are seen as highly promising candidates to replace precious metals as ORR. In the years following Dai's pioneering work, various other doped carbon materials were further developed and their catalytic mechanisms investigated. [17][18][19][20][21][22] Some more recent studies explored this further and suggested that active intrinsic carbon structural defects are associated with efficient ORR catalysis (Figure 2b). [23][24][25][26] Although great progress has been achieved on this topic, the origin and mechanism of the ORR activity are still not fully clear. Beyond the catalytic activity, no pattern has been established in the selectivityThe electrochemical oxygen reduction reaction (ORR) is the key energy conversion reaction involved in fuel cells, metal-air batteries, and hydrogen peroxide production. Proliferation and improvement of the ORR requires wider use of new and existing high performance catalysts; unfortunately, most of these are still based on precious metals and become uneconomical in massuse ...

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Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

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Engineering Carbon Materials for Electrochemical Oxygen Reduction Reactions

Lin

Miao

Wallace

et al. 2021

Advanced Energy Materials

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“…Эффективность подобных катализаторов подтверждена как экспериментально [5,13], так и обоснована квантовохимическими расчетами [14]. В связи с этим следует обратить внимание на работу [15], в которой в качестве эффективного катализатора РВК рассмотрен так называемый волнообразный графеновый образец. Согласно утверждениям авторов, атомы углерода, находящиеся на вершинах рипперов (возвышенностей), обладают повышенной каталитической активностью, обусловленной возрастанием их химического потенциала и уменьшением кривизны сжатой графеновой наноленты.…”

Section: методом теории функционала плотности (B3lyp 6-31 G**) выполunclassified

Elementary acts of the reaction of molecular oxygen recovery over nitrogen-doped sp2-carbon cluster: quantum chemical study

Demyanenko¹,

Karpenko²,

Лобанов³

et al. 2017

Poverhn.

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Lattice Distortion and H‐passivation in Pure Carbon Electrocatalysts for Efficient and Stable Two‐electron Oxygen Reduction to H₂O₂

Lin,

Huang,

et al. 2023

Angewandte Chemie

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The exploration of inexpensive and efficient catalysts for oxygen reduction reaction (ORR) is crucial for chemical and energy industries. Carbon materials have been proved promising with different catalysts enabling 2 and 4e‐ ORR. Nevertheless, their ORR activity and selectivity is still complex and under debate in many cases. Many structures of these active carbon materials are also chemically unstable for practical implementations. Unlike the well‐discussed structures, this work presents a strategy to promote efficient and stable 2e‐ ORR of carbon materials through the synergistic effect of lattice distortion and H‐passivation (on the distorted structure). We show how these structures can be formed on carbon cloth, and how the reproducible chemical adsorption can be realized on these structures for efficient and stable H2O2 production. The work here gives not only new understandings on the 2e‐ ORR catalysis, but also the robust catalyst which can be directly used in industry.

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Exploring an effective oxygen reduction reaction catalyst via 4e− process based on waved-graphene

Cited by 12 publications

References 51 publications

Engineering Carbon Materials for Electrochemical Oxygen Reduction Reactions

Engineering Carbon Materials for Electrochemical Oxygen Reduction Reactions

Elementary acts of the reaction of molecular oxygen recovery over nitrogen-doped sp2-carbon cluster: quantum chemical study

Lattice Distortion and H‐passivation in Pure Carbon Electrocatalysts for Efficient and Stable Two‐electron Oxygen Reduction to H₂O₂

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Exploring an effective oxygen reduction reaction catalyst via 4e− process based on waved-graphene

Cited by 12 publications

References 51 publications

Engineering Carbon Materials for Electrochemical Oxygen Reduction Reactions

Engineering Carbon Materials for Electrochemical Oxygen Reduction Reactions

Elementary acts of the reaction of molecular oxygen recovery over nitrogen-doped sp2-carbon cluster: quantum chemical study

Lattice Distortion and H‐passivation in Pure Carbon Electrocatalysts for Efficient and Stable Two‐electron Oxygen Reduction to H2O2

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Lattice Distortion and H‐passivation in Pure Carbon Electrocatalysts for Efficient and Stable Two‐electron Oxygen Reduction to H₂O₂