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 journalArticlepeer-review

6 Citations (Scopus)

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

Bibliographical note

Funding Information:
The authors would like to thank Dr. Rong Huang, Dr. Sirine Fakra, and Dr. Malcolm Thomas for the experimental support at the CHESS F3 beamline, at the ALS 10.3.2 beamline, and at the Cornell Center for Materials Research (CCMR) Shared facilities, respectively, and Cara N. Gannett for the insightful discussion on electrochemical analysis. This work is based upon research conducted at CHESS, a national user facility, which is supported by the National Science Foundation under award DMR-1332208, at the ALS, which is a DOE office of Science User Facility under contract no. DE-AC02-05CH11231, and at the CCMR Shared Facilities which are supported through the NSF MRSEC program (DMR-1719875). This work is supported by the Energy Materials Center at Cornell (emc), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, and the Office of Basic Energy Sciences under award number DE-SC0001086. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF-2020R1C1C1012308). 2

Publisher Copyright:
Copyright © 2020 American Chemical Society.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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