A quick guide to the assessment of key electrochemical performance indicators for the oxygen reduction reaction: A comprehensive review

Bhuvanendran, Narayanamoorthy; Ravichandran, Sabarinathan; Xu, Qian; Maiyalagan, T.; Su, Huaneng

doi:10.1016/j.ijhydene.2021.12.072

Cited by 56 publications

(25 citation statements)

References 215 publications

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“…The LSV curves are recorded in the 0 to −0.5 V potential range with a potential scan rate of 50 mV/s. The current peak shown in the LSVs, in agreement with the experimental data present in the literature, at about −0.35 V. 2,15,16,17,18 In the case of the solution free of any other gases, a difference is found when comparing the LSV curves recorded with a magnetized electrode (solid line) and the unmagnetized electrode (dashed line). A decrease of about 20% is found in the current at the peak of the LSV when the electrode is not magnetized versus a magnetized one (Table 1).…”

Section: Figuresupporting

confidence: 89%

The Effect of Anesthesia Gases on the Oxygen Reduction Reaction

Gupta

Sang

Fontanesi

et al. 2022

Preprint

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The oxygen reduction reaction (ORR) is of high importance because of its role in cellular respiration. Recently, a possible relation between respiration and general anesthesia has been found. This work aims to explore whether anesthesia related gases affect the ORR. In ORR, oxygen which is in its triplet ground state is reduced to form products that are all in the singlet state. While this process is in principle forbidden because of spin conservation, it is known that if the electrons transferred in the ORR are spin polarized, the reaction occurs efficiently. Here we show, in electrochemical experiments, that the efficiency of the oxygen reduction is reduced by the presence of general anesthetics in solution. We suggest that a spin-orbit coupling to the anesthetics depolarizes the spins. This causes both a reduction in reaction efficiency and a change in the reaction products. The findings may point to a possible relation between ORR efficiency and anesthetic action.

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Section: Figuresupporting

confidence: 89%

The Effect of Anesthesia Gases on the Oxygen Reduction Reaction

Gupta

Sang

Fontanesi

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The LSV curves are recorded in the 0 to −0.5 V potential range with a potential scan rate of 50 mV/s. The current peak is shown in the LSVs, in agreement with the experimental data present in the literature, at about −0.35 V. 2 , 15 − 18 In the case of the solution free of any other gases, a difference is found when comparing the LSV curves recorded with a magnetized electrode (solid line) and the unmagnetized electrode (dashed line). A decrease of about 20% is found in the current at the peak of the LSV when the electrode is not magnetized versus a magnetized one ( Table 1 ).…”

supporting

confidence: 89%

Effect of Anesthesia Gases on the Oxygen Reduction Reaction

Gupta

Sang

Fontanesi

et al. 2023

J. Phys. Chem. Lett.

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The oxygen reduction reaction (ORR) is of high importance, among others, because of its role in cellular respiration and in the operation of fuel cells. Recently, a possible relation between respiration and general anesthesia has been found. This work aims to explore whether anesthesia related gases affect the ORR. In ORR, oxygen which is in its triplet ground state is reduced to form products that are all in the singlet state. While this process is “in principle” forbidden because of spin conservation, it is known that if the electrons transferred in the ORR are spin-polarized, the reaction occurs efficiently. Here we show, in electrochemical experiments, that the efficiency of the oxygen reduction is reduced by the presence of general anesthetics in solution. We suggest that a spin–orbit coupling to the anesthetics depolarizes the spins. This causes both a reduction in reaction efficiency and a change in the reaction products. The findings may point to a possible relation between ORR efficiency and anesthetic action.

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“…As the global population and energy demand increase, researchers are committed to develop and improve various sustainable energy technologies, such as electrochemical water splitting, − fuel cells, , and metal–air batteries. , The oxygen reduction reaction (ORR) is the key reaction of these green and highly efficient energy conversion technologies that directly transfer chemical energy to electric energy. − However, such reaction is a multistep process with multiple electron transfer, exhibiting very slow reaction kinetics, which severely restrict the performance of related electrochemical devices. − Currently, Pt nanoparticles have been loaded to the surface of the carbon matrix to prepare commercial Pt/C catalysts with excellent ORR activity, which have been widely used in various types of commercialized fuel cells. , Although Pt/C catalysts have unmatched ORR catalytic activity with other related catalysts (especially in acidic medium), it is prone to inactivation during the catalysis process because of various reasons, such as agglomeration, dissolution, and recrystallization of Pt nanoparticles, the corrosion of the carbon matrix, and the poisoning of the catalysts in methanol solution. − Therefore, the development of low-cost non-Pt-based ORR catalysts has important practical significance for improving catalyst stability and promoting the commercial application of related electrochemical devices.…”

Section: Introductionmentioning

confidence: 99%

TiO/Ti₃O₅-Decorated Electrospun Carbon Nanofibers as High-Performance Oxygen Reduction Reaction Electrocatalysts

Shi

Zhu

et al. 2023

ACS Appl. Nano Mater.

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Magnéli phases Ti n O2n–1 (3 ≤ n ≤ 10) have been widely utilized in various electrochemical fields due to the adjustable phase composition and band structure. In addition, the excellent electrical conductivity and regularly distributed oxygen vacancies of Ti n O2n–1 phases lead to superior electrocatalytic activity. This work successfully synthesized different types of dual-phase Ti n O2n–1 nanoparticle-decorated electrospun carbon nanofibers (CNFs) to act as high-performance oxygen reduction reaction (ORR) electrocatalysts. Based on the precisely controlled calcination temperature and holding time, the combinations among two of TiO(T1), Ti2O3(T2), and Ti3O5(T3) dual-phase nanoparticle-decorated CNF composite catalysts can be obtained after a one-step calcination process. The CNF/T1/T3 catalysts with an ideal 4-electron transfer path exhibit the best ORR catalytic activity with the onset and half-wave potential of 0.91 and 0.77 V, respectively. Compared with commercial Pt/C catalysts, such composite catalysts possessed better methanol tolerance and chemical stability with less than 20% relative current density attenuation after a 80,000 s-long cycle process. Furthermore, density functional theory (DFT) calculations suggest the different reaction energy barriers of ORR steps on the surface of different Ti n O2n–1 phases. Compared with the single-phase CNF/Ti n O2n–1 catalysts, the energy barrier of the rate-determining step can be reduced significantly through the diffusion of intermediate products, which proved the synergistic catalytic effect of the dual-phase Ti n O2n–1 nanoparticles.

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A quick guide to the assessment of key electrochemical performance indicators for the oxygen reduction reaction: A comprehensive review

Cited by 56 publications

References 215 publications

The Effect of Anesthesia Gases on the Oxygen Reduction Reaction

The Effect of Anesthesia Gases on the Oxygen Reduction Reaction

Effect of Anesthesia Gases on the Oxygen Reduction Reaction

TiO/Ti₃O₅-Decorated Electrospun Carbon Nanofibers as High-Performance Oxygen Reduction Reaction Electrocatalysts

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A quick guide to the assessment of key electrochemical performance indicators for the oxygen reduction reaction: A comprehensive review

Cited by 56 publications

References 215 publications

The Effect of Anesthesia Gases on the Oxygen Reduction Reaction

The Effect of Anesthesia Gases on the Oxygen Reduction Reaction

Effect of Anesthesia Gases on the Oxygen Reduction Reaction

TiO/Ti3O5-Decorated Electrospun Carbon Nanofibers as High-Performance Oxygen Reduction Reaction Electrocatalysts

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Product

Resources

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TiO/Ti₃O₅-Decorated Electrospun Carbon Nanofibers as High-Performance Oxygen Reduction Reaction Electrocatalysts