Nanostructured MnO2 Films for 3D Micro‐Supercapacitors: From New Insights of the Growth Mechanism to the Fine Tuning of Areal Capacitance Values - Institut d'électronique, de microélectronique et de nanotechnologie Accéder directement au contenu
Article Dans Une Revue Journal of The Electrochemical Society Année : 2023

Nanostructured MnO2 Films for 3D Micro‐Supercapacitors: From New Insights of the Growth Mechanism to the Fine Tuning of Areal Capacitance Values

Résumé

Maximizing the electrochemical performance of 3D micro-supercapacitors based on pseudocapacitive films is crucial for powering the next generation of miniaturized IoT devices. The films have to be nanostructured, must conform the 3D template, and have uniform deposition. To study the growth mechanism of nanostructured MnO 2 films obtained by a pulsed electrodeposition method, in situ Atomic Force Microscopy methods operating in liquid mode, Scanning Electron Microscopy, and electrochemical characterization techniques were used. The impact of ON and OFF times during the pulsed electrodeposition process was investigated. The deposition mechanism in Volmer Weber Island growth mode provided some guidelines to tune the deposit morphology to enhance the electrochemical performance of the 3D electrode based on nanostructured MnO 2 films.
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Dates et versions

hal-04062788 , version 1 (19-05-2023)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

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Citer

Botayna Bounor, Bouchra Asbani, Camille Douard, D. Deresmes, Didier Stiévenard, et al.. Nanostructured MnO2 Films for 3D Micro‐Supercapacitors: From New Insights of the Growth Mechanism to the Fine Tuning of Areal Capacitance Values. Journal of The Electrochemical Society, 2023, 170 (3), pp.030530. ⟨10.1149/1945-7111/acbee8⟩. ⟨hal-04062788⟩
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