An Operando Mechanistic Evaluation of a Solar-Rechargeable Sodium-Ion Intercalation Battery

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Shi Nee Lou
  • Neeraj Sharma
  • Damian Goonetilleke
  • Wibawa Hendra Saputera
  • Thomas M. Leoni
  • Paul Brockbank
  • Sean Lim
  • Da-Wei Wang
  • Jason Scott
  • Rose Amal

Detail(s)

Original languageEnglish
Article number1700545
Journal / PublicationAdvanced Energy Materials
Volume7
Issue number19
Early online date3 Jul 2017
Publication statusPublished - 11 Oct 2017
Externally publishedYes

Abstract

Solar-intercalation batteries, which are able to both harvest and store solar energy within the electrodes, are a promising technology for the more efficient utilization of intermittent solar radiation. However, there is a lack of understanding on how the light-induced intercalation reaction occurs within the electrode host lattice. Here, an in operando synchrotron X-ray diffraction methodology is introduced, which allows for real-time visualization of the structural evolution process within a solar-intercalation battery host electrode lattice. Coupled with ex situ material characterization, direct correlations between the structural evolution of MoO3 and the photo-electrochemical responses of the solar-intercalation batteries are established for the first time. MoO3 is found to transform, via a two-phase reaction mechanism, initially into a sodium bronze phase, Na0.33MoO3, followed by the formation of solid solutions, NaxMoO3 (0.33 < x < 1.1), on further photointercalation. Time-resolved correlations with the measured voltages indicate that the two-phase evolution reaction follows zeroth-order kinetics. The insights achieved from this study can aid the development of more advanced photointercalation electrodes and solar batteries with greater performances.

Research Area(s)

  • batteries, energy storage, molybdenum oxide, photo-electrochemical, solar energy harvesting

Citation Format(s)

An Operando Mechanistic Evaluation of a Solar-Rechargeable Sodium-Ion Intercalation Battery. / Lou, Shi Nee; Sharma, Neeraj; Goonetilleke, Damian; Saputera, Wibawa Hendra; Leoni, Thomas M.; Brockbank, Paul; Lim, Sean; Wang, Da-Wei; Scott, Jason; Amal, Rose; Ng, Yun Hau.

In: Advanced Energy Materials, Vol. 7, No. 19, 1700545, 11.10.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review