Operando Synchrotron-Based X-ray Study of Prussian Blue and Its Analogue as Cathode Materials for Sodium-Ion Batteries

Jeesoo Seok, Seung Ho Yu, Héctor D. Abrunã

Research output: Contribution to journalArticle

Abstract

In this study, we employed operando synchrotron-based X-ray techniques to monitor potential-dependent oxidation-state changes of metal components and lattice spacings of Prussian blue (PB) and its analogues as sodium-ion battery materials in real time. Operando X-ray absorption near edge structure measurements revealed that iron is the only redox active component in both PB and its analogue substituted with nickel (PBN). Operando X-ray diffraction measurements revealed that relative to PB, PBN shows better structural stability and rate capability, ascribed to smaller volumetric changes during cycling and state of charge as well as larger diffusion coefficients.

Original languageEnglish
Pages (from-to)16332-16337
Number of pages6
JournalJournal of Physical Chemistry C
Volume124
Issue number30
DOIs
Publication statusPublished - 2020 Jul 30

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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