Magnetically-enhanced electron transfer from immobilized galvinoxyl radicals

The magnetic response of hybrid capacitors (HCs) has become an essential topic in practical applications and fundamental research, but because of the complicated contact surface between the electrode and electrolyte, identifying the effect of the morphologies of electrodes on the magnetic response remains challenging. Here, we prepared needle‐, weed‐ and net‐like Co3O4 as electrodes to investigate the morphology‐dependent HCs properties under a magnetic field (MF). The results showed that the capacity of the needle‐ and weed‐like electrode changes in a range of 5.8 % to −23.2 % and 12.8 % to −5.1 % at a scan rate from 5 to 100 mV/s with a 4000Gs magnetic field, while that of net‐like electrode changes from 45.3 % to 41.3 %. The different magnetic response is attributed to the effect of the morphology on electrolyte convection under an external magnetic field. This work favours understanding the magnetic dependence of HCs properties and pushes the practical application of HCs in magnetic environments.

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Preparation of Co₃O₄ Electrodes with Different Morphologies for the Investigation of Magnetic Response in Hybrid Capacitors

Liang

Tian

Liu

et al. 2022

ChemElectroChem

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Use of magnetic fields in electrochemistry: A selected review

Gatard

Deseure

Chatenet

2020

Current Opinion in Electrochemistry

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Electrochemical reactions are usually thermally-activated and submitted to masstransfer effects. Although classically, enhanced kinetics of an electrochemical reaction is obtained by heating the cell and feeding the reactant by forced convection, other means can be used to improve mass-and charge-transfer. This paper shortly reviews the effects of magnetic fields in electrochemistry. Using a static or an alternating magnetic field enables to enhance electrodeposition and electrocatalysis, via improved gas and species convection, electrochemical kinetics and whole reaction efficiency. Such enhancement can mainly be related to Lorentz and Kelvin forces, magneto-hydrodynamics (MHD), chiral-induced spin selectivity (CISS) and hyperthermia, these effects being described herein.

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Novel modified electrode with immobilized galvinoxyl radical for the voltammetric determination of antioxidant activity

Ziyatdinova

Zelenova

Budnikov

2020

Journal of Electroanalytical Chemistry

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Magnetically-enhanced electron transfer from immobilized galvinoxyl radicals

Cited by 4 publications

References 33 publications

Preparation of Co₃O₄ Electrodes with Different Morphologies for the Investigation of Magnetic Response in Hybrid Capacitors

Preparation of Co₃O₄ Electrodes with Different Morphologies for the Investigation of Magnetic Response in Hybrid Capacitors

Use of magnetic fields in electrochemistry: A selected review

Novel modified electrode with immobilized galvinoxyl radical for the voltammetric determination of antioxidant activity

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Magnetically-enhanced electron transfer from immobilized galvinoxyl radicals

Cited by 4 publications

References 33 publications

Preparation of Co3O4 Electrodes with Different Morphologies for the Investigation of Magnetic Response in Hybrid Capacitors

Preparation of Co3O4 Electrodes with Different Morphologies for the Investigation of Magnetic Response in Hybrid Capacitors

Use of magnetic fields in electrochemistry: A selected review

Novel modified electrode with immobilized galvinoxyl radical for the voltammetric determination of antioxidant activity

Contact Info

Product

Resources

About

Preparation of Co₃O₄ Electrodes with Different Morphologies for the Investigation of Magnetic Response in Hybrid Capacitors

Preparation of Co₃O₄ Electrodes with Different Morphologies for the Investigation of Magnetic Response in Hybrid Capacitors