Interrogating the Light-Induced Charging Mechanism in Li-Ion Batteries Using Operando Optical Microscopy - Tout INSP
Article Dans Une Revue Nano Letters Année : 2023

Interrogating the Light-Induced Charging Mechanism in Li-Ion Batteries Using Operando Optical Microscopy

Raj Pandya
Angus Mathieson
  • Fonction : Auteur
Buddha Deka Boruah
Michael de Volder
  • Fonction : Auteur

Résumé

Photobatteries, batteries with a light-sensitive electrode, have recently been proposed as a way of simultaneously capturing and storing solar energy in a single device. Despite reports of photocharging with multiple different electrode materials, the overall mechanism of operation remains poorly understood. Here, we use operando optical reflection microscopy to investigate light-induced charging in LixV2O5 electrodes. We image the electrode, at the single-particle level, under three conditions: (a) with a closed circuit and light but no electronic power source (photocharging), (b) during galvanostatic cycling with light (photoenhanced), and (c) with heat but no light (thermal). We demonstrate that light can indeed drive lithiation changes in LixV2O5 while maintaining charge neutrality, possibly via a combination of faradaic and nonfaradaic effects taking place in individual particles. Our results provide an addition to the photobattery mechanistic model highlighting that both intercalation-based charging and lithium concentration polarization effects contribute to the increased photocharging capacity.
Fichier principal
Vignette du fichier
pandya-et-al-2023-interrogating-the-light-induced-charging-mechanism-in-li-ion-batteries-using-operando-optical.pdf (4.25 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
licence

Dates et versions

hal-04752707 , version 1 (24-10-2024)

Licence

Identifiants

Citer

Raj Pandya, Angus Mathieson, Buddha Deka Boruah, Hilton de Aguiar, Michael de Volder. Interrogating the Light-Induced Charging Mechanism in Li-Ion Batteries Using Operando Optical Microscopy. Nano Letters, 2023, 23 (16), pp.7288-7296. ⟨10.1021/acs.nanolett.3c01148⟩. ⟨hal-04752707⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

More